CN117133506B - Temperature-resistant copper conductor cable for computer and preparation method thereof - Google Patents

Temperature-resistant copper conductor cable for computer and preparation method thereof Download PDF

Info

Publication number
CN117133506B
CN117133506B CN202311343711.4A CN202311343711A CN117133506B CN 117133506 B CN117133506 B CN 117133506B CN 202311343711 A CN202311343711 A CN 202311343711A CN 117133506 B CN117133506 B CN 117133506B
Authority
CN
China
Prior art keywords
temperature
boron nitride
polyvinyl chloride
copper conductor
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202311343711.4A
Other languages
Chinese (zh)
Other versions
CN117133506A (en
Inventor
汤优钢
耿亚平
赵孝宗
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Xinhai Gaodao New Materials Co ltd
Original Assignee
Anhui Xinhai Gaodao New Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Xinhai Gaodao New Materials Co ltd filed Critical Anhui Xinhai Gaodao New Materials Co ltd
Priority to CN202311343711.4A priority Critical patent/CN117133506B/en
Publication of CN117133506A publication Critical patent/CN117133506A/en
Application granted granted Critical
Publication of CN117133506B publication Critical patent/CN117133506B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
    • H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
    • H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
    • H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a temperature-resistant copper conductor cable for a computer and a preparation method thereof, belonging to the technical field of cables, and comprising a cable inner core, an isolation layer, a first shielding layer and an outer sheath, wherein the isolation layer, the first shielding layer and the outer sheath are sequentially coated outside the cable inner core from inside to outside; the polyvinyl chloride composite material comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 20-30 parts of composite heat-conducting flame-retardant filler, 20-25 parts of plasticizer, 0.1-0.5 part of antioxidant, 2-3 parts of stabilizer and 0.5-1 part of lubricant; the temperature-resistant copper conductor cable for the computer, which is obtained by the invention, has good shielding effect, wherein the outer sheath is made of a polyvinyl chloride composite material, the polyvinyl chloride composite material is obtained by mixing and extruding raw materials such as polyvinyl chloride resin, composite heat-conducting flame-retardant filler, plasticizer and the like, has good heat-radiating performance and flame-retardant performance, and improves the temperature resistance and safety of the temperature-resistant copper conductor cable for the computer.

Description

Temperature-resistant copper conductor cable for computer and preparation method thereof
Technical Field
The invention belongs to the technical field of cables, and particularly relates to a temperature-resistant copper conductor cable for a computer and a preparation method thereof.
Background
With the popularization and application of computers and computer network systems in recent years, the performance requirements on the computer cable are higher and higher, the conventional computer cable has resistance due to conductor materials, when the cable transmits current, the resistance of the conductor generates heat, the larger the current is, the more the heat generated by the conductor is, the conductor temperature is also increased, the direct-current resistance of the conductor is increased, the more the heat generated by the increase of the direct-current resistance is increased, the loss caused by the increase of the conductor temperature in the electric energy transmission process is about 15% of the transmitted electric energy, the loss of the electric energy can be reduced by reducing the conductor temperature, the important factors affecting the conductor temperature are the thermal resistance of materials around the conductor forming the cable structure, the insulation layer and the sheath layer are arranged outside the conductor, the existing insulation layer and the sheath layer are high-resistance materials, the thermal conductivity coefficient of the materials is very low, generally between 0.1 and 0.3W/mk, the thermal conductivity coefficient of polyvinyl chloride is 0.14W/mk, the computer cable works in air, the gradient from the conductor to the surface temperature of the cable is high when the conductor temperature is higher, the electric energy is lost in the electric energy transmission process is about 15%, the loss is easy to be caused, the heat loss of the cable is easy to be generated in the computer room, the complex, the heat is high heat dissipation accident is caused by the high, the high heat is caused by the high thermal accident is caused by the computer is high, the heat is well and the computer is required to be well, and the heat is easy to have high, and has high thermal safety and has high heat and has the potential safety and high and has high heat and has and high heat and has high heat resistance and heat resistance.
Disclosure of Invention
The invention aims to provide a temperature-resistant copper conductor cable for a computer and a preparation method thereof, which are used for solving the problems of poor heat dissipation and poor flame retardance of the conventional cable for the computer.
The aim of the invention can be achieved by the following technical scheme:
The utility model provides a temperature resistant copper conductor cable for computer, includes the cable inner core, and from interior to outside cladding in proper order outside the cable inner core isolation layer, first shielding layer and oversheath, the cable inner core is formed by the transposition of many inner core units, and every inner core unit all includes two insulating heart yearns of intertwisting each other, and the cladding is at the second shielding layer outside two insulating heart yearns, first shielding layer and second shielding layer are woven by first copper wire and form, and the weaving density of first copper wire is greater than 80%, and insulating heart yearn includes the conductor and includes the insulating layer outside the conductor, and the conductor is formed by the transposition of the second copper wire that many monofilament diameters are less than 0.18mm, and the oversheath is made by polyvinyl chloride combined material.
The preparation method of the temperature-resistant copper conductor cable for the computer comprises the following steps:
S1, twisting a second copper wire into a conductor, and coating an insulating layer made of LDPE material outside the conductor by adopting an extrusion die to obtain an insulating core wire;
S2, twisting the two insulated core wires, and obtaining an inner core unit outside the two insulated core wires by Rao Baodi two shielding layers;
S3, twisting the plurality of inner core units in a concentric twisting mode to obtain a cable inner core, uniformly coating the isolation layer outside the cable inner core, coating the first shielding layer on the surface of the isolation layer, and uniformly coating the sheath prepared from the polyvinyl chloride composite material outside the first shielding layer in an extrusion mode to obtain the temperature-resistant copper conductor cable for the computer.
Further, the polyvinyl chloride composite material is prepared by the following steps:
the following raw materials in parts by weight are prepared: 100 parts of polyvinyl chloride resin, 20-30 parts of composite heat-conducting flame-retardant filler, 20-25 parts of plasticizer, 0.1-0.5 part of antioxidant, 2-3 parts of stabilizer and 0.5-1 part of lubricant; adding the raw materials into a mixer, enabling the temperature of the raw materials to reach 110 ℃ at the rotating speed of 850-950r/min, then placing the raw materials into an extruder, and extruding and granulating the raw materials at the temperature of 150-170 ℃ to obtain the polyvinyl chloride composite material.
Further, the composite heat-conducting flame-retardant filler is prepared by the following steps:
step A1, grinding melamine and micro-powder graphite for 16 hours, transferring to deionized water at 95 ℃, adding phosphoric acid after stirring, stirring for 2 hours, cooling to room temperature, filtering, washing a filter cake, and drying at 75 ℃ to constant weight to obtain a solid a;
And A2, mixing the solid a, the acrylic ester modified nano boron nitride, ferric nitrate nonahydrate and deionized water, slowly dropwise adding 10wt% of Tris solution while stirring for 30min, adjusting the pH to 8.6, continuously stirring for 1h, standing for precipitation, filtering, repeatedly washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain the composite heat-conducting flame-retardant filler.
Graphene has the advantages of small phonon heat transfer scattering, high heat transfer efficiency and the like, and the heat conductivity coefficient is as high as 5000W/mk, melamine is used as a stripping aid, and based on pi-pi interaction and non-covalent modification principles between the melamine and the graphene, graphene hybridized melamine phosphate with flame retardance and heat conductivity, namely a solid a, is prepared, then the solid a and acrylic ester modified nano boron nitride are combined into a whole by utilizing Fe 3+ (by utilizing the complexation between a phosphate group and carboxyl and Fe 3+), and the heat conduction and insulation acrylic ester modified nano boron nitride is introduced into the surface of the solid a through complexation, so that the composite heat conduction and flame retardance filler is obtained.
Further, the usage ratio of melamine, micro graphite, deionized water and phosphoric acid in the step A1 is 2.4g:0.8g:300-400mL:2.8-3.7g, a zirconia grinding tank is adopted for grinding, and the grinding rotating speed is 300r/min.
Further, in the step A2, the dosage ratio of the solid a, the acrylic ester modified nano boron nitride, the ferric nitrate nonahydrate and the deionized water is 1g:2-4g:1.9-2.2g:300mL.
Further, the acrylate modified nano boron nitride is prepared by:
Step B1, adding OH-BNNS, absolute ethyl alcohol and deionized water into a flask, adding 3- (methacryloyloxy) propyl trimethoxysilane after ultrasonic treatment for 20min, reacting for 4h at 70 ℃, cooling to room temperature, carrying out suction filtration, washing a filter cake with deionized water, and drying to obtain unsaturated double bond modified boron nitride;
in the above reaction, the ratio of OH-BNNS, absolute ethyl alcohol, deionized water and 3- (methacryloyloxy) propyl trimethoxysilane was 200mg:150mL:50mL:0.5-1mL of OH-BNNS is hexagonal boron nitride nano-sheet with surface hydroxylation, purchased from Sean Ji Yue Biotechnology Co., ltd;
Step B2, adding unsaturated double bond modified boron nitride into DMF, adding acrylic acid and glycidyl methacrylate under the protection of nitrogen, heating to 80 ℃, adding benzoyl peroxide, stirring for reaction for 24 hours, filtering after the reaction is finished, washing a filter cake with anhydrous diethyl ether, and vacuum drying at 45 ℃ to obtain acrylic ester modified nano boron nitride;
in the above reaction, the ratio of the amount of the unsaturated double bond modified boron nitride, DMF, acrylic acid and glycidyl methacrylate to the amount of 10g:100-120mL:0.5-0.8g:0.6-1.2g, the benzoyl peroxide amount is 1% of the sum of the mass of the unsaturated double bond modified boron nitride, the acrylic acid and the glycidyl methacrylate; under the action of an initiator, the unsaturated double bond of the unsaturated double bond modified boron nitride is polymerized with acrylic acid and glycidyl methacrylate, and abundant carboxyl and epoxy groups are introduced into the unsaturated double bond modified boron nitride to obtain the acrylic ester modified nano boron nitride.
Further, the first copper wire is a tinned copper wire, and the diameter of the first copper wire is 0.08-0.15mm.
Further, the thickness of the first shielding layer is 0.08-0.1mm, and the thickness of the second shielding layer is 0.05-0.08mm.
Further, the insulating layer is formed by foaming and extruding LDPE material, and the thickness is 0.3-0.8mm.
Further, the isolation layer is formed by a polyester tape Rao Bao with a thickness of 0.03-0.08mm.
Further, the plasticizer is one or more of dioctyl phthalate, dioctyl terephthalate and trioctyl trimellitate.
Further, the antioxidant is antioxidant 1010 or antioxidant 2246.
Further, the stabilizer is an NX-109 calcium-zinc composite stabilizer.
Further, the lubricant is one or more of zinc stearate, barium stearate, calcium stearate and chlorinated paraffin.
The invention has the beneficial effects that:
1. The invention provides a temperature-resistant copper conductor cable for a computer, which comprises a cable inner core, an isolation layer, a first shielding layer and an outer sheath, and has good shielding effect and reduced dielectric loss and attenuation of the cable, wherein the outer sheath is made of a polyvinyl chloride composite material, the polyvinyl chloride composite material is obtained by mixing and extruding raw materials such as polyvinyl chloride resin, composite heat-conducting flame-retardant filler, plasticizer and the like, and has good heat-dissipating performance and flame-retardant performance, and the temperature resistance and the safety of the temperature-resistant copper conductor cable for the computer are improved.
2. According to the invention, the composite heat-conducting flame-retardant filler is introduced into the polyvinyl chloride composite material, and is a complex product of graphene hybridized melamine phosphate, acrylic ester modified nano boron nitride and Fe 3+, wherein the graphene hybridized melamine phosphate has good heat-conducting flame-retardant property, the heat-conducting insulated acrylic ester modified nano boron nitride is uniformly distributed on the surface of the graphene hybridized melamine phosphate, a heat-conducting network is formed while a transmission route of conductive electrons is cut off, the heat dissipation property of the polyvinyl chloride composite material is improved, the heat dissipation property of the polyvinyl chloride composite material is not influenced, the graphene hybridized melamine phosphate generates melamine and polyphosphoric acid in a thermal decomposition process, NH 3 absorbs heat in a pyrolysis manner, polyphosphoric acid is generated in the thermal decomposition process, a compact carbon layer is generated by body dehydration, the effects of heat insulation, oxygen isolation, flame retardance and smoke suppression are exerted, meanwhile, fe 3+ can form stable ferric phosphate with a phosphoric acid group, the mechanical strength of the carbon layer is further strengthened, and the excellent high-temperature resistance characteristic of the acrylic ester modified nano boron nitride is combined, so that the polyvinyl chloride composite material has good heat dissipation and flame-retardant properties.
3. The surface of the composite heat-conducting flame-retardant filler also has active epoxy groups, the epoxy groups can capture Cl generated by thermal degradation of the polyvinyl chloride resin, free radical reaction of the polyvinyl chloride degradation is stopped, and the temperature resistance of the polyvinyl chloride composite material is improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
A composite heat-conducting flame-retardant filler is prepared by the following steps:
Step A1, 2.4g of melamine and 0.8g of micro powder graphite are ball-milled in a zirconia milling tank at the rotating speed of 300r/min for 16 hours, then the mixture is transferred into 300mL of deionized water at the temperature of 95 ℃, 2.8g of phosphoric acid is added after stirring, the mixture is stirred for 2 hours and cooled to the room temperature, the mixture is filtered, and a filter cake is washed and then dried to constant weight at the temperature of 75 ℃ to obtain a solid a;
And A2, mixing 1g of solid a, 2g of acrylic ester modified nano boron nitride, 1.9g of ferric nitrate nonahydrate and 300mL of deionized water, slowly dropwise adding 10wt% of Tris solution while stirring for 30min, regulating the pH to 8.6, continuously stirring for 1h, standing for precipitation, filtering, repeatedly washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain the composite heat-conducting flame-retardant filler.
The acrylic ester modified nano boron nitride is prepared by the following steps:
Step B1, adding 200mg of OH-BNNS, 150mL of absolute ethyl alcohol and 50mL of deionized water into a flask, adding 0.5mL of 3- (methacryloyloxy) propyl trimethoxysilane after ultrasonic treatment for 20min, reacting for 4h at 70 ℃, cooling to room temperature, carrying out suction filtration, washing a filter cake with deionized water, and drying to obtain unsaturated double bond modified boron nitride, wherein the OH-BNNS is a hexagonal boron nitride nanosheet with a surface hydroxylated surface, and is purchased from the biological technology Co., inc. of Xishan Ji Yue;
And B2, adding 10g of unsaturated double bond modified boron nitride into 100mL of DMF, adding 0.5g of acrylic acid and 0.6g of glycidyl methacrylate under the protection of nitrogen, heating to 80 ℃, adding 0.1g of benzoyl peroxide, stirring and reacting for 24 hours, filtering after the reaction is finished, washing a filter cake with anhydrous diethyl ether, and vacuum drying at 45 ℃ to obtain the acrylic ester modified nano boron nitride.
Example 2
A composite heat-conducting flame-retardant filler is prepared by the following steps:
Step A1, 2.4g of melamine and 0.8g of micro powder graphite are ball-milled in a zirconia milling tank at the rotating speed of 300r/min for 16 hours, then the mixture is transferred into 400mL of deionized water at the temperature of 95 ℃, 3.7g of phosphoric acid is added after stirring, the mixture is stirred for 2 hours and cooled to the room temperature, the mixture is filtered, and a filter cake is washed and then dried to constant weight at the temperature of 75 ℃ to obtain a solid a;
and A2, mixing 1g of solid a, 4g of acrylic ester modified nano boron nitride, 2.2g of ferric nitrate nonahydrate and 300mL of deionized water, slowly dropwise adding 10wt% of Tris solution while stirring for 30min, regulating the pH to 8.6, continuously stirring for 1h, standing for precipitation, filtering, repeatedly washing a filter cake with deionized water until a washing solution is neutral, and drying to obtain the composite heat-conducting flame-retardant filler.
The acrylic ester modified nano boron nitride is prepared by the following steps:
Step B1, adding 200mg of OH-BNNS, 150mL of absolute ethyl alcohol and 50mL of deionized water into a flask, adding 1mL of 3- (methacryloyloxy) propyl trimethoxysilane after ultrasonic treatment for 20min, reacting for 4h at 70 ℃, cooling to room temperature, carrying out suction filtration, washing a filter cake with deionized water, and drying to obtain unsaturated double bond modified boron nitride, wherein the OH-BNNS is a hexagonal boron nitride nano sheet with surface hydroxylation, and is purchased from SiA Ji Yue biotechnology Co;
And B2, adding 10g of unsaturated double bond modified boron nitride into 120mL of DMF, adding 0.8g of acrylic acid and 1.2g of glycidyl methacrylate under the protection of nitrogen, heating to 80 ℃, adding 0.12g of benzoyl peroxide, stirring and reacting for 24 hours, filtering after the reaction is finished, washing a filter cake with anhydrous diethyl ether, and vacuum drying at 45 ℃ to obtain the acrylic ester modified nano boron nitride, wherein the benzoyl peroxide dosage is 1% of the sum of the unsaturated double bond modified boron nitride, the acrylic acid and the glycidyl methacrylate.
Comparative example 1
This comparative example is the product solid a obtained in step A1 of example 1.
Comparative example 2
This comparative example is the acrylate modified nano boron nitride obtained in step B1 of example 1.
Example 3
A polyvinyl chloride composite material is prepared by the following steps:
The following raw materials in parts by weight are prepared: 100 parts of polyvinyl chloride resin, 20 parts of the composite heat-conducting flame-retardant filler of the example 1, 20 parts of a plasticizer, 0.1 part of an antioxidant, 2 parts of a stabilizer and 0.5 part of a lubricant; adding the raw materials into a mixer, enabling the temperature of the raw materials to reach 110 ℃ at the rotating speed of 850r/min, then placing the raw materials into an extruder, and extruding and granulating the raw materials at the temperature of 150-170 ℃ to obtain the polyvinyl chloride composite material.
Wherein the plasticizer is dioctyl phthalate, the antioxidant is antioxidant 1010, the stabilizer is NX-109 calcium zinc composite stabilizer, and the lubricant is zinc stearate.
Example 4
A polyvinyl chloride composite material is prepared by the following steps:
The following raw materials in parts by weight are prepared: 100 parts of polyvinyl chloride resin, 25 parts of the compound heat-conducting flame-retardant filler of the example 2, 22 parts of plasticizer, 0.2 part of antioxidant, 2.5 parts of stabilizer and 0.8 part of lubricant; adding the raw materials into a mixer, enabling the temperature of the raw materials to reach 110 ℃ at the rotating speed of 900r/min, then placing the raw materials into an extruder, and extruding and granulating the raw materials at the temperature of 150-170 ℃ to obtain the polyvinyl chloride composite material.
Wherein the plasticizer is dioctyl terephthalate, the antioxidant is antioxidant 1010, the stabilizer is NX-109 calcium zinc composite stabilizer, and the lubricant is barium stearate.
Example 5
A polyvinyl chloride composite material is prepared by the following steps:
The following raw materials in parts by weight are prepared: 100 parts of polyvinyl chloride resin, 30 parts of the compound heat-conducting flame-retardant filler of the example 2, 25 parts of plasticizer, 0.5 part of antioxidant, 3 parts of stabilizer and 1 part of lubricant; adding the raw materials into a mixer, enabling the temperature of the raw materials to reach 110 ℃ at the rotating speed of 950r/min, then placing the raw materials into an extruder, and extruding and granulating the raw materials at the temperature of 150-170 ℃ to obtain the polyvinyl chloride composite material.
Wherein the plasticizer is trioctyl trimellitate, the antioxidant is antioxidant 1010, the stabilizer is NX-109 calcium-zinc composite stabilizer, and the lubricant is calcium stearate.
Comparative example 3
Compared with example 3, the composite heat-conducting flame-retardant filler in example 3 is replaced by the material in comparative example 1, and the rest raw materials and the preparation process are the same as in example 3.
Comparative example 4
Compared with example 3, the composite heat-conducting flame-retardant filler in example 3 is replaced by the material in comparative example 2, and the rest raw materials and the preparation process are the same as in example 3.
The utility model provides a temperature resistant copper conductor cable for computer, includes the cable inner core, and from interior to exterior cladding in proper order outside the cable inner core isolation layer, first shielding layer and oversheath, and the cable inner core is formed by the transposition of many inner core units, and every inner core unit all includes two insulating heart yearns of intertwisting each other, and the cladding is at the second shielding layer outside two insulating heart yearns, first shielding layer and second shielding layer are woven by first copper wire and form, and the weaving density of first copper wire is greater than 80%, and insulating heart yearn includes the conductor and includes the insulating layer outside the conductor, and the conductor is formed by the transposition of the second copper wire that many monofilament diameters are less than 0.18mm, and first copper wire is tinned copper wire, and the diameter is 0.1mm, and first shielding layer thickness is 0.1mm, and second shielding layer thickness is 0.06mm, and insulating layer thickness is 0.5mm, and the isolation layer is formed by polyester tape Rao Bao, and thickness is 0.05mm, and the oversheath is made by polyvinyl chloride combined material.
The samples prepared in examples 3-5 and comparative examples 3-4 were used to prepare finished products of computer-use heat-resistant copper conductor cables, the heat conductivity of the outer jacket was tested by referring to the test method of GB/T1029-1998 "measuring heat ray method for heat conductivity of nonmetallic solid materials", and the flame retardant property of each group of cable samples was tested by referring to the type A method of the vertically mounted bundled cable flame spread test specified in the standard of surface GB/T18380.33-2008, and the results are shown in Table 1:
TABLE 1
As can be seen from table 1, the temperature-resistant copper conductor cables for computers obtained in example 3, example 4, and example 5 were high in heat resistance and flame resistance as compared with comparative example 3 and comparative example 4.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The temperature-resistant copper conductor cable for the computer is characterized by comprising a cable inner core, an isolation layer, a first shielding layer and an outer sheath, wherein the isolation layer, the first shielding layer and the outer sheath are sequentially coated outside the cable inner core from inside to outside, and the outer sheath is made of a polyvinyl chloride composite material;
Wherein, the polyvinyl chloride composite material is prepared by the following steps:
the following raw materials in parts by weight are prepared: 100 parts of polyvinyl chloride resin, 20-30 parts of composite heat-conducting flame-retardant filler, 20-25 parts of plasticizer, 0.1-0.5 part of antioxidant, 2-3 parts of stabilizer and 0.5-1 part of lubricant; mixing the raw materials, extruding and granulating to obtain the polyvinyl chloride composite material;
The composite heat-conducting flame-retardant filler is prepared by the following steps:
step A1, grinding melamine and micro-powder graphite for 16 hours, transferring to deionized water at 95 ℃, adding phosphoric acid after stirring, stirring for 2 hours, cooling to room temperature, filtering, washing a filter cake, and drying at 75 ℃ to constant weight to obtain a solid a;
step A2, mixing the solid a, the acrylic ester modified nano boron nitride, ferric nitrate nonahydrate and deionized water, slowly dropwise adding 10wt% of Tris solution while stirring, adjusting the pH to 8.6, continuously stirring for 1h, standing for precipitation, filtering, washing a filter cake, and drying to obtain the composite heat-conducting flame-retardant filler;
the acrylic ester modified nano boron nitride is prepared by the following steps:
Step B1, adding OH-BNNS, absolute ethyl alcohol and deionized water into a flask, adding 3- (methacryloyloxy) propyl trimethoxysilane after ultrasonic treatment for 20min, reacting for 4h at 70 ℃, cooling to room temperature, carrying out suction filtration, washing a filter cake with deionized water, and drying to obtain unsaturated double bond modified boron nitride;
And B2, adding unsaturated double bond modified boron nitride into DMF, adding acrylic acid and glycidyl methacrylate under the protection of nitrogen, heating to 80 ℃, adding benzoyl peroxide, stirring for reaction for 24 hours, filtering after the reaction is finished, washing a filter cake with anhydrous diethyl ether, and vacuum drying at 45 ℃ to obtain the acrylic ester modified nano boron nitride.
2. The temperature-resistant copper conductor cable for computers according to claim 1, wherein the amount ratio of melamine, micro graphite, deionized water and phosphoric acid in the step A1 is 2.4g:0.8g:300-400mL:2.8-3.7g.
3. The temperature-resistant copper conductor cable for computers according to claim 1, wherein in the step A2, the dosage ratio of the solid a, the acrylic ester modified nano boron nitride, the ferric nitrate nonahydrate and the deionized water is 1g:2-4g:1.9-2.2g:300mL.
4. The temperature-resistant copper conductor cable for computers according to claim 1, wherein the dosage ratio of OH-BNNS, absolute ethyl alcohol, deionized water and 3- (methacryloyloxy) propyl trimethoxysilane in step B1 is 200mg:150mL:50mL:0.5-1mL, OH-BNNS is hexagonal boron nitride nano-sheet with surface hydroxylation.
5. The temperature-resistant copper conductor cable for computers according to claim 1, wherein the ratio of the amount of the unsaturated double bond modified boron nitride, DMF, acrylic acid and glycidyl methacrylate in the step B2 is 10g:100-120mL:0.5-0.8g:0.6-1.2g, the benzoyl peroxide amount is 1% of the sum of the mass of the unsaturated double bond modified boron nitride, the acrylic acid and the glycidyl methacrylate.
6. The method for preparing the temperature-resistant copper conductor cable for computers according to claim 1, comprising the following steps:
s1, stranding a copper wire into a conductor, and coating an insulating layer made of LDPE material outside the conductor by adopting an extrusion die to obtain an insulating core wire;
S2, twisting the two insulated core wires, and obtaining an inner core unit outside the two insulated core wires by Rao Baodi two shielding layers;
S3, twisting the plurality of inner core units in a concentric twisting mode to obtain a cable inner core, uniformly coating the isolation layer outside the cable inner core, coating the first shielding layer on the surface of the isolation layer, and uniformly coating the sheath prepared from the polyvinyl chloride composite material outside the first shielding layer in an extrusion mode to obtain the temperature-resistant copper conductor cable for the computer.
CN202311343711.4A 2023-10-17 2023-10-17 Temperature-resistant copper conductor cable for computer and preparation method thereof Active CN117133506B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311343711.4A CN117133506B (en) 2023-10-17 2023-10-17 Temperature-resistant copper conductor cable for computer and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311343711.4A CN117133506B (en) 2023-10-17 2023-10-17 Temperature-resistant copper conductor cable for computer and preparation method thereof

Publications (2)

Publication Number Publication Date
CN117133506A CN117133506A (en) 2023-11-28
CN117133506B true CN117133506B (en) 2024-09-24

Family

ID=88856672

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311343711.4A Active CN117133506B (en) 2023-10-17 2023-10-17 Temperature-resistant copper conductor cable for computer and preparation method thereof

Country Status (1)

Country Link
CN (1) CN117133506B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105017676A (en) * 2015-04-21 2015-11-04 江苏中超电缆股份有限公司 Graphene-containing high heat conduction polyvinyl chloride sheath material for cable, and cable
CN111849290A (en) * 2020-06-05 2020-10-30 新昌县同生生物技术股份有限公司 High-thermal-conductivity flame-retardant acrylic resin coating and preparation method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104751967B (en) * 2013-12-25 2017-01-04 安徽联嘉祥特种电缆有限公司 fire-resistant wire and cable and preparation method thereof
CN113652077B (en) * 2021-06-30 2023-05-23 浙江元通线缆制造有限公司 Irradiation crosslinking rubber-based flame-retardant cable and preparation method thereof
CN113851266B (en) * 2021-09-22 2023-08-01 安徽中通电缆科技有限公司 Cross-linked polyethylene insulation halogen-free low-smoke flame-retardant B1-level power cable
CN114864161B (en) * 2022-04-06 2023-07-14 安徽华上电缆科技有限公司 Crosslinked polyethylene insulating flame-retardant polyvinyl chloride sheath fire-resistant cable
CN115403877A (en) * 2022-05-20 2022-11-29 扬州实嘉电缆材料有限公司 Insulating polyvinyl chloride cable composite material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105017676A (en) * 2015-04-21 2015-11-04 江苏中超电缆股份有限公司 Graphene-containing high heat conduction polyvinyl chloride sheath material for cable, and cable
CN111849290A (en) * 2020-06-05 2020-10-30 新昌县同生生物技术股份有限公司 High-thermal-conductivity flame-retardant acrylic resin coating and preparation method thereof

Also Published As

Publication number Publication date
CN117133506A (en) 2023-11-28

Similar Documents

Publication Publication Date Title
CN110862604B (en) Halogen-free flame-retardant sheath material for nuclear power station and preparation method thereof
CN110176329B (en) Flame-retardant cable
CN112053808A (en) Manufacturing process of ultraviolet crosslinked cable
CN110229443A (en) A kind of flame retardant cable and preparation method thereof
CN108250527A (en) A kind of radiation protection weather-resistance flame-retardant cable sheath material and preparation method thereof
CN111276287A (en) Stretch-proof high-temperature-resistant aerospace cable and preparation method thereof
CN114843019B (en) Halogen-free flame-retardant cable capable of resisting high and low temperatures
CN117133506B (en) Temperature-resistant copper conductor cable for computer and preparation method thereof
CN100497462C (en) Nano modified halogen-free flame-proof environmental protection heat-shrinkable material and preparation method thereof
CN113637270A (en) High-performance information transmission communication cable and production process thereof
CN115938661B (en) Low-smoke halogen-free power cable and preparation process thereof
CN103554636B (en) A kind of preparation technology of cable insulation material of excellent performance
CN112820462A (en) Flame-retardant polyvinyl chloride insulating fire-resistant power cable
CN103524853B (en) A kind of formula of cable insulation material of excellent performance
CN112280144A (en) Stretch-resistant composite cable and production process thereof
CN105348617A (en) Polyolefin cable material for low-smoke halogen-free middle-high-voltage direct current cable and preparation method
CN110379550A (en) A kind of weatherability radio-frequency cable and its preparation process
CN110982186A (en) Insulating layer of electric appliance connecting wire and preparation method thereof
CN116013593A (en) Cable and sheath composition thereof
CN210295939U (en) Three-layer co-extrusion insulation wire core
CN101702342B (en) Low-smoke halogen-free flame retardant coaxial cable for nuclear power station
CN117285772B (en) Flame-retardant power cable and production process thereof
CN117497232B (en) Fluoroplastic fireproof power cable
CN203456167U (en) 5000 to 15000 volts jumper cable for ships and petrochemicals
CN117894517B (en) High-temperature-resistant and aging-resistant cable and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant