CN101358028A - Halogen-free flame-retardant thermoplastic elastomer electrical cable material using polyphenylene ether as base material and preparation method thereof - Google Patents

Halogen-free flame-retardant thermoplastic elastomer electrical cable material using polyphenylene ether as base material and preparation method thereof Download PDF

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Publication number
CN101358028A
CN101358028A CNA2008101207206A CN200810120720A CN101358028A CN 101358028 A CN101358028 A CN 101358028A CN A2008101207206 A CNA2008101207206 A CN A2008101207206A CN 200810120720 A CN200810120720 A CN 200810120720A CN 101358028 A CN101358028 A CN 101358028A
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flame
styrene
percent
retardant
matrix resin
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CN101358028B (en
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张文阳
刘华
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NINGBO YIZHOU PLASTIC CO Ltd
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NINGBO YIZHOU PLASTIC CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92828—Raw material handling or dosing, e.g. active hopper or feeding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92866—Inlet shaft or slot, e.g. passive hopper; Injector, e.g. injector nozzle on barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a halogen-free flame-retardant thermoplastic elastomer cable material with polyphenylether as the base materials and a preparation method thereof. The raw material of the cable material contains the components with the following weight percentage: 10 to 35 percent of matrix resin A; 5 to 15 percent of matrix resin B; 10 to 25 percent of elastomer; 5 to 25 percent of softening plasticizer; 8 to 15 percent of flame-retardant plasticizer; 20 to 40 percent of smoke-suppression flame retardant; 3 to 10 percent of compatilizer; 1 to 5 percent of lubricant; 1 to 5 percent of powder surface conditioner; 0 to 10 percent of mineral filler; 0.1 to 1 percent of stabilizing agent. The invention adds matrix resin, polyphenylether of strong polarity and functional group of styrene-ethylene / butylene-styrene segmented copolymer, which effectively improves the compatibility of non-polar elastomer with polyphenylether; the invention also adds plasticizer, which reduces the hardness of the material and increases the flexibility; and through the optimization and interaction of the softening plasticizer and the flame-retardant plasticizer, the invention reduces the hardness and improves the tactility of the material, and the flame retardant performance is excellent.

Description

It with polyphenylene oxide halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material and preparation method thereof
Technical field
The present invention relates to polymeric material field, specifically a kind of is the halogen-free flame-retardant thermoplastic elastomer electrical cable material and preparation method thereof of base-material with polyphenylene oxide.
Background technology
Along with expanding economy, in order to reduce the fire failure that cable heating burning is caused, the use of flame retardant cable is more and more common.Traditional flame retardant cable mainly is to have halogen fire-retardant, when fire takes place, can produce a large amount of smog, produces poisonous, with irritating and corrosive hydrogen halide; Smog can hinder fire fighting and personnel's evacuation, and hydrogen halide can etching apparatus, also can be detrimental to health, so, produce and use halogen-free flameproof safety, environment-friendly electric wire CABLE MATERIALS have become and press for.
Polyphenylene oxide has excellent mechanical property, electrical property and thermotolerance, and in addition, self has flame retardant resistance material, is well suited for being used to make Flame-retardant Wire and Cable Compounds.The higher viscosity of polyphenylene oxide makes processing characteristics very poor, and harder feel has also stoped it in the application that reaches on the daily necessities on the electric wire.Thermoplastic elastomer has good hand feeling and workability, but because the restriction of low, the flammability of material self heat-drawn wire etc., so, be not suitable for directly making Flame-retardant Wire and Cable Compounds.Thereby the people is arranged, and just imagination is with both combinations, and hope can be learnt from other's strong points to offset one's weaknesses, and makes halogen-free flameproof and the good wire cable material of tool elastic handfeel with this.Patent Office of the People's Republic of China's patent gazette on February 27th, 2008 publication number be: " CN101130616A ", " a kind of low-smoke zero-halogen flame-retardant polyphenyl ether wire cable material and preparation method thereof " patent application, it is to utilize polyphenyl ether material itself to have higher rigidity, excellent electric insulating and water tolerance, by adding the softish elastomerics, reduce the hardness of co-mixing system and strengthen snappiness, add the bonding force between compatilizer raising polyphenylene oxide and the elastomerics, improve the comprehensive mechanical performance of blend.But, in four embodiment that this patent application provides, its test result, the embodiment of hardness minimum also can only reach Shao Shi 85 degree, as be used for making daily electric wire such as earphone cord etc., feel can not be given comfort more firmly, and flame retardant properties, flexibility are all undesirable.
Summary of the invention
The objective of the invention is to defective and deficiency, increase and adjust the component of material,, provide a kind of wire cable material of ideal halogen-free flameproof for electrical apparatus industry to increase consistency, to reduce material hardness increase elasticity, flame retardant resistance at above-mentioned prior art.
The technical solution used in the present invention is for achieving the above object: should be the halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material with polyphenylene oxide, and it is characterized in that the weight percent of its raw material consisted of:
(1), matrix resin A:10%～35%;
(2), matrix resin B:5%～15%;
(3), elastomerics: 10%～25%;
(4), softening softening agent: 5%～25%;
(5), flame-retardant plasticizer: 8%～15%;
(6), smoke resistance flame resistance agent: 20%～40%;
(7), compatilizer: 3%～10%;
(8), lubricant: 1%～5%;
(9), surface treatment agent for powder: 1%～5%;
(10), mineral filler: 0%～10%;
(11), stablizer: 0.1%～1%.
Wherein selected matrix resin A is the polyphenylene oxide homopolymer, it is selected from poly-(2,6-dimethyl-1, the 4-phenylene) ether, poly-(2-ethyl-6-methyl isophthalic acid, the 4-phenylene) ether, poly-(2,6 diethyl-1, the 4-phenylene) ether, poly-(2-ethyl-6 n-propyl-1, the 4-phenylene) ether, poly-(2,6-di-1,4-phenylene) ether, poly-(2, methyl-6-n-propyl-1, the 4-phenylene) one or more of ether, poly-(2-ethyl-6-sec.-propyl-1,4-phenylene) ether, poly-(2-methyl-6-hydroxyethyl-1,4-phenylene) ether;
Matrix resin B is selected from one or more of general purpose polystyrene, high-impact polystyrene, polyethylene, polypropylene, polymeric amide;
Elastomerics is selected from styrene-butadiene rubber(SBR), ethylene-propylene rubber(EPR), paracril, cis-1,4-polybutadiene rubber, ethylene vinyl acetate, polyolefin elastomer, styrene-butadiene-styrene block copolymer, styrene isoprene styrene block copolymer (SIS), styrene-ethylene/butylene-styrene block copolymer, styrene-ethylene/propylene-styrene segmented copolymer, Polyurethane Thermoplastic Elastomer, one or more of polyether block amide copolymer;
The smoke resistance flame resistance agent is selected from one or more of melamine cyanurate, ammonium polyphosphate, tetramethylolmethane, aluminium hydroxide, magnesium hydroxide, zinc borate, molybdenum oxide, ammonium octamolybdate;
Compatilizer is selected from one or more of maleic anhydride or acrylic acid-grafted polystyrene, polyethylene, polypropylene, polymeric amide, polyphenylene oxide and functionalization styrene-ethylene/butylene-styrene block copolymer;
Lubricant is selected from one or more of paraffin, polyethylene wax, siloxanes, silicone oil;
Surface treatment agent for powder is selected from one or more of stearic acid, stearate, silane coupling agent;
Mineral filler is selected from one or more of talcum powder, lime carbonate, kaolin, white carbon black;
Stablizer is selected from one or more of benzophenone, Hinered phenols, phosphorous acid esters, hindered amines stablizer.
Described softening softening agent is selected from one or more of saturated straight chain alkane oil, naphthenic oil.
Described flame-retardant plasticizer is selected from triphenylphosphate, dihydroxyphenyl propane two (diphenyl phosphoester), Resorcinol two (one or more in the diphenyl phosphoester).
A kind of is the halogen-free flame-retardant thermoplastic elastomer electrical cable material and preparation method thereof of base-material with polyphenylene oxide, it is characterized in that being made up of following steps:
1. take by weighing each raw material for standby by described weight percent;
2. powder handling: earlier that the above-mentioned materials that takes by weighing is required powder, add in the mixer as smoke resistance flame resistance agent and mineral filler, stir 10min with homogenizer, behind the thorough mixing, add surface treatment agent for powder, continue to stir 20min, the powder that the above-mentioned activation treatment that discharge is handled well is crossed, stand-by.
3. starting material are mixed: then the above-mentioned elastomerics that has taken by weighing is put into mixer, softening agent will be softened and flame-retardant plasticizer is put into mixer by spray equipment, the limit spray, the limit batch mixing, require thorough mixing, after treating that softening softening agent and flame-retardant plasticizer are absorbed fully by elastomerics, put into powder, compatilizer, mineral filler, stablizer, lubricant that above-mentioned matrix resin A, matrix resin B, activation treatment are crossed, thorough mixing is even then.
4. process granulation: the above-mentioned material that will mix is at last discharged from mixer, drop in the feeding hopper of twin screw extruder, evenly add in the twin screw extruder by feeding machine, the twin screw extruder temperature is set between 220 ℃～260 ℃, 20 hertz of feeding step rates, and engine speed is 350 rev/mins, through screw extrusion press high speed shear, mixing, reach abundant interfused purpose, make material by the stock cutter of head again, send into the feed bin packing by blower fan and get final product.
The maleic anhydride of the present invention's handle interpolation matrix resin B or acrylic acid grafts are as compatilizer, increased the consistency of the more weak matrix resin B of stronger polyphenylene oxide of polarity and polarity, add the functionalization styrene-ethylene/butylene-styrene block copolymer and also effectively improved the consistency of nonpolar elastomerics and polyphenylene oxide, reduced the demixing phenomenon of each component of material.
The present invention has effectively reduced the hardness of material by the mode of adding softening agent, has strengthened soft hand feeling.Because the strong softening agent of plasticization capacity is generally all inflammable, and it is relatively more general to have the elasticizer plasticizing effect of flame retardant effect, and the present invention is through preferably having solved this contradiction by softening softening agent and the flame-retardant plasticizer method of using that cooperatively interacts.Material hardness through the elasticizer plasticizing after preferred is low, good hand touch, and flame retardant effect is splendid.
The present invention is in order to reach the effect of low-smoke and flame retardant, through overtesting, preferred nitrogen phosphorus flame retardant efficiently, and cooperate with smoke suppressors such as ammonium octamolybdate, zinc borates, material can be tested by the V0 level of UL94, and the electronics line or the earphone cord that use this material to make can be by the tests of VW-1 vertical combustion.
The present invention for the powder that solves smoke resistance flame resistance agent and mineral filler in the material with the bad problem of the consistency of macromolecular material, the mode of activation treatment is carried out in employing to powder surface, strengthened the combination of powder, the elasticity of material and intensity all are enhanced with macromolecular material.
Embodiment
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1
1, weighing by weight percentage: take by weighing matrix resin A polyphenylene oxide homopolymer PPO 18.0%, matrix resin B high-impact polystyrene GPPS 4.5%, elastic body styrene-butadiene-styrene block copolymer SBS 10.8%, softening softening agent saturated straight chain alkane oil 9.0%, flame-retardant plasticizer: triphenylphosphate TTP9.0%, smoke resistance flame resistance agent: melamine cyanurate MGA 5.4%, ammonium polyphosphate APP 9.0%, aluminium hydroxide ATH 23.4%, compatilizer: polystyrene-maleic anhydride grafted thing PS-g-MAH 1.8%, functionalization styrene-ethylene/butylene-styrene block copolymer SEBS 1.8%, lubricant: polyethylene candle 1.4%, surface treatment agent for powder: stearic acid 1.8%, mineral filler: talcum powder 3.6%, stablizer: Hinered phenols stablizer 0.4%, total amount amounts to 100%, and is standby.
2, powder handling: the required powder of the material that will take by weighing earlier, add in the mixer as smoke resistance flame resistance agent and mineral filler, stir 10min with homogenizer, behind the thorough mixing, add surface treatment agent for powder, continue high-speed stirring 20min; The powder that the above-mentioned activation treatment that discharge is handled well is crossed, stand-by.
3, starting material are mixed: then the above-mentioned elastomerics that has taken by weighing is put into mixer, softening agent will be softened and flame-retardant plasticizer is put into mixer by spray equipment, the limit spray, the limit batch mixing, require thorough mixing, after being absorbed fully by elastomerics etc. softening softening agent and flame-retardant plasticizer, add above-mentioned matrix resin A, basic resin B, powder, compatilizer, mineral filler, stablizer, the lubricant that activation treatment is crossed, thorough mixing is even then.
4, processing granulation: the above-mentioned material that will mix at last discharges, drops into the feed hopper of twin screw extruder from mixer, evenly add in the twin screw extruder by feeding machine, the twin screw extruder temperature is set between 220 ℃～260 ℃, 20 hertz of feeding step rates, engine speed is 350 rev/mins, through screw extrusion press high speed shear, mixing, reaches abundant interfused purpose, make material by the stock cutter of head again, send into the feed bin packing by blower fan and get final product.
The following respectively tabulation 1 of embodiment 2,3,4,5, table 2, table 3, table 4 weighing:
Embodiment 2 (table 1)
Type of feed Material name Weight percent
Matrix resin A PPO 11.9％
Matrix resin B GPPS 7.9％
Elastomerics SEBS 19.8％
Softening softening agent Naphthenic oil 5.9％
Flame-retardant plasticizer BDP 8.0％
The smoke resistance flame resistance agent MCA 5.9％
The smoke resistance flame resistance agent APP 9.9％
The smoke resistance flame resistance agent ATH 15.7％
The smoke resistance flame resistance agent Zinc borate 4.0％
Compatilizer PS-g-MAH 2.0％
Compatilizer Functionalization SEBS 2.0％
Lubricant Polyethylene wax 1.6％
Surface treatment agent for powder Stearic acid 2.0％
Mineral filler Talcum powder 3.0％
Stablizer The Hinered phenols stablizer 0.2％
Stablizer The hindered amines stablizer 0.2％
Add up to 100.0％
Embodiment 3 (table 2)
Type of feed Material name Weight percent
Matrix resin A PPO 34.2％
Matrix resin B HIPS 6.8％
Elastomerics SEBS 10.3％
Softening softening agent Saturated straight chain alkane oil 6.8％
Softening softening agent RDP 10.3％
The smoke resistance flame resistance agent MCA 10.3％
The smoke resistance flame resistance agent ATH 3.4％
Figure A20081012072000091
Embodiment 4 (table 3)
Type of feed Material name Weight percent
Matrix resin A PPO 18.1％
Matrix resin B PE 7.2％
Elastomerics EVA 5.4％
Elastomerics SEBS 5.4％
Softening softening agent Naphthenic oil 14.5％
Flame-retardant plasticizer RDP 9.1％
The smoke resistance flame resistance agent MCA 14.5％
The smoke resistance flame resistance agent ATH 7.2％
The smoke resistance flame resistance agent Zinc borate 3.6％
The smoke resistance flame resistance agent Ammonium octamolybdate 5.4％
Compatilizer PPO-g-MAH 0.9％
Compatilizer PE-g-MAH 1.8％
Compatilizer Functionalization SEBS 0.9％
Lubricant Siloxanes 1.4％
Surface treatment agent for powder Silane coupling agent 1.8％
Embodiment 5 (table 4)
Type of feed Material name Weight percent
Matrix resin A PPO 14.6％
Matrix resin B GPPS 14.6％
Elastomerics Ethylene-propylene rubber(EPR) 5.8％
Elastomerics SBS 5.8％
Softening softening agent Saturated straight chain alkane oil 14.6％
Softening softening agent Naphthenic oil 5.8％
Flame-retardant plasticizer RDP 7.3％
The smoke resistance flame resistance agent MCA 17.5％
The smoke resistance flame resistance agent Ammonium octamolybdate 7.3％
Compatilizer PS-g-MAH 0.7％
Compatilizer PPO-g-MAH 0.7％
Compatilizer Functionalization SEBS 1.5％
Lubricant Silicone oil 0.7％
Surface treatment agent for powder Silane coupling agent 1.5％
Mineral filler Talcum powder 1.5％
Stablizer The Hinered phenols stablizer 0.1％
Stablizer The phosphorous acid esters stablizer 0.1％
Stablizer The hindered amines stablizer 0.1％
Add up to 100.0％
The Chinese name of above table 1～4 Chinese and English abbreviation correspondences is as follows:
PPO---polyphenylene oxide homopolymer
GPPS---general purpose polystyrene
HIPS---high-impact polystyrene
PE---polyethylene
SBS---styrene-butadiene-styrene block copolymer
SEBS---styrene-ethylene/butylene-styrene block copolymer
EVA---ethylene vinyl acetate
TPP---triphenylphosphate
BDP---dihydroxyphenyl propane two (diphenyl phosphoester)
RDP---Resorcinol two (diphenyl phosphoester)
MCA---melamine cyanurate
APP---ammonium polyphosphate
ATH---aluminium hydroxide
PS-g-MAN---polystyrene-maleic anhydride grafted thing
PS-g-MAN---polyvinyl-maleic anhydride grafts
PPO-g-MAN---polyphenylene oxide-maleic anhydride grafts
With carry out powder handling with the foregoing description 1 same steps as, starting material are mixed and process granulation, the concrete after tested numerical value of prepared product is as shown in table 5:
Table 5
Test event Unit Testing method Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Shore hardness ShoreA ASTM D-2240 75 75 85 70 60
Melting index (250 ℃, 5kg) g/10min ASTM D-1238 10.2 8.1 2.6 10.5 12.8
Tensile break strength Mpa ASTM D-412 7.2 7.5 9.5 6.4 5.6
Tension fracture elongation rate Mpa ASTM D-412 500 550 480 600 650
Density g/cm 3 ASTM D-792 1.24 1.23 1.24 1.22 1.21
Through correlation detection, use material hardness that above five kinds of prescriptions make between Shao Shi A60～85, good springiness, the electric wire that is drawn into is soft, daily uses such as suitable earphone cord.
By the flame retardant properties test proof to material, material can pass through the V-0 level flame retardant test of UL, and the electric wire that draws can have outstanding flame retardant properties by the vertical combustion test of VW-1.

Claims (4)

1, a kind of is the halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material with polyphenylene oxide, it is characterized in that, the weight percent of its raw material consists of:
(1), matrix resin A:10%～35%;
(2), matrix resin B:5%～15%;
(3), elastomerics: 10%～25%;
(4), softening softening agent: 5%～25%;
(5), flame-retardant plasticizer: 8%～15%;
(6), smoke resistance flame resistance agent: 20%～40%;
(7), compatilizer: 3%～10%;
(8), lubricant: 1%～5%;
(9), surface treatment agent for powder: 1%～5%;
(10), mineral filler: 0%～10%;
(11), stablizer: 0.1%～1%.
Wherein selected matrix resin A is the polyphenylene oxide homopolymer, it is selected from poly-(2,6-dimethyl-1, the 4-phenylene) ether, poly-(2-ethyl-6-methyl isophthalic acid, the 4-phenylene) ether, poly-(2,6 diethyl-1, the 4-phenylene) ether, poly-(2-ethyl-6 n-propyl-1, the 4-phenylene) ether, poly-(2,6-di-1,4-phenylene) ether, poly-(2, methyl-6-n-propyl-1, the 4-phenylene) one or more of ether, poly-(2-ethyl-6-sec.-propyl-1,4-phenylene) ether, poly-(2-methyl-6-hydroxyethyl-1,4-phenylene) ether;
Matrix resin B is selected from one or more of general purpose polystyrene, high-impact polystyrene, polyethylene, polypropylene, polymeric amide;
Elastomerics is selected from styrene-butadiene rubber(SBR), ethylene-propylene rubber(EPR), paracril, cis-1,4-polybutadiene rubber, ethylene vinyl acetate, polyolefin elastomer, styrene-butadiene-styrene block copolymer, styrene isoprene styrene block copolymer (SIS), styrene-ethylene/butylene-styrene block copolymer, styrene-ethylene/propylene-styrene segmented copolymer, Polyurethane Thermoplastic Elastomer, one or more of polyether block amide copolymer;
The smoke resistance flame resistance agent is selected from one or more of melamine cyanurate, ammonium polyphosphate, tetramethylolmethane, aluminium hydroxide, magnesium hydroxide, zinc borate, molybdenum oxide, ammonium octamolybdate;
Compatilizer is selected from one or more of maleic anhydride or acrylic acid-grafted polystyrene, polyethylene, polypropylene, polymeric amide, polyphenylene oxide and functionalization styrene-ethylene/butylene-styrene block copolymer;
Lubricant is selected from one or more of paraffin, polyethylene wax, siloxanes, silicone oil;
Surface treatment agent for powder is selected from one or more of stearic acid, stearate, silane coupling agent;
Mineral filler is selected from one or more of talcum powder, lime carbonate, kaolin, white carbon black;
Stablizer is selected from one or more of benzophenone, Hinered phenols, phosphorous acid esters, hindered amines stablizer.
2, according to claim 1 is the halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material with polyphenylene oxide, it is characterized in that described softening softening agent is selected from one or more of saturated straight chain alkane oil, naphthenic oil.
3, according to claim 1 and 2 is the halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material with polyphenylene oxide, it is characterized in that described flame-retardant plasticizer is selected from one or more in triphenylphosphate, dihydroxyphenyl propane two (diphenyl phosphoester), the Resorcinol two (diphenyl phosphoester).
4, a kind of is the preparation method of the halogen-free flame-retardant thermoplastic elastomer electrical cable material of base-material with polyphenylene oxide, it is characterized in that being made up of following steps:
1. take by weighing each raw material for standby by described weight percent;
2. powder handling: earlier that the above-mentioned materials that takes by weighing is required powder, add in the mixer as smoke resistance flame resistance agent and mineral filler, stir 10min with homogenizer, behind the thorough mixing, add surface treatment agent for powder, continue to stir 20min, the powder that the above-mentioned activation treatment that discharge is handled well is crossed, stand-by.
3. starting material are mixed: the above-mentioned elastomerics that has taken by weighing is put into mixer, softening agent will be softened and flame-retardant plasticizer is put into mixer by spray equipment, the limit spray, the limit batch mixing, require thorough mixing, after treating that softening softening agent and flame-retardant plasticizer are absorbed fully by elastomerics, put into powder, compatilizer, mineral filler, stablizer, lubricant that above-mentioned matrix resin A, matrix resin B, activation treatment are crossed, thorough mixing is even then.
4. process granulation: the above-mentioned material that will mix is at last discharged from mixer, drop in the feeding hopper of twin screw extruder, evenly add in the twin screw extruder by feeding machine, the twin screw extruder temperature is set between 220 ℃～260 ℃, 20 hertz of feeding frequencies, and engine speed is 350 rev/mins, through screw extrusion press high speed shear, mixing, reach abundant interfused purpose, make material by the stock cutter of head again, send into the feed bin packing by blower fan and get final product.
CN2008101207206A 2008-09-02 2008-09-02 Halogen-free flame-retardant thermoplastic elastomer electrical cable material using polyphenylene ether as base material and preparation method thereof Expired - Fee Related CN101358028B (en)

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