CN110614733A - Dust removal and drying pretreatment process for ABS alloy injection molding material - Google Patents
Dust removal and drying pretreatment process for ABS alloy injection molding material Download PDFInfo
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- CN110614733A CN110614733A CN201910936983.2A CN201910936983A CN110614733A CN 110614733 A CN110614733 A CN 110614733A CN 201910936983 A CN201910936983 A CN 201910936983A CN 110614733 A CN110614733 A CN 110614733A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 76
- 238000001035 drying Methods 0.000 title claims abstract description 71
- 239000000956 alloy Substances 0.000 title claims abstract description 65
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 63
- 239000012778 molding material Substances 0.000 title claims abstract description 62
- 239000000428 dust Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 26
- 238000001291 vacuum drying Methods 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 63
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- -1 compatilizers Substances 0.000 claims description 10
- 239000003607 modifier Substances 0.000 claims description 10
- 239000012744 reinforcing agent Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000012760 heat stabilizer Substances 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 5
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 5
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 239000012745 toughening agent Substances 0.000 claims description 5
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 5
- 238000009489 vacuum treatment Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002086 nanomaterial Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 5
- 229920007019 PC/ABS Polymers 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920006942 ABS/PC Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of high-performance modification and processing of high polymer materials, and particularly relates to a dust removal drying pretreatment process of an ABS alloy injection molding material. The dedusting and drying pretreatment process of the ABS alloy injection molding material comprises the steps of material preparation, dedusting and cleaning, vacuum drying and raw material pretreatment, so that the clean pretreated ABS alloy injection molding material with no moisture content and extremely low dust particles is obtained. The dedusting and drying pretreatment process of the ABS alloy injection molding material is simple, high in production efficiency, low in cost and environment-friendly. The ABS alloy injection molding product prepared from the pretreated ABS alloy injection molding material obtained by the process has greatly improved quality and long service life, and has excellent performance when being applied to parts of household appliances such as refrigerators, washing machines, purifiers, air conditioners and the like.
Description
Technical Field
The invention belongs to the technical field of high-performance modification and processing of high polymer materials, and particularly relates to a dust removal drying pretreatment process of an ABS alloy injection molding material.
Background
ABS resin is a material with properties between those of engineering plastics and general plastics, has good impact resistance and processing flowability, and is relatively cheap, so that the ABS resin is widely applied. But the application is limited because the heat resistance and the weather resistance are poor and the mechanical property is not ideal. ABS alloy is a generic term for plastic polymers obtained by modification in order to achieve certain properties in ABS resins. Common ABS alloys include ABS/PC, ABS/PA, ABS/PBT, ABS/PVC and the like. The PC/ABS alloy with PC and ABS as raw materials is an important engineering plastic alloy, and the material not only has good forming performance, but also has good low-temperature impact resistance, higher thermal deformation temperature and light stability.
At present, the PC/ABS alloy is the commercial engineering plastic alloy with the largest output and sales amount, and is also the commercial engineering plastic alloy with the largest waste amount. The large amount of waste PC/ABS alloy not only causes environmental pollution, but also causes ineffective stacking of resources. For disposal of the waste PC/ABS alloy, the most ideal way is to recycle the ABS alloy material in the waste.
In the injection molding process, if the injection molding material contains moisture or dust particles, the quality of an injection molding part can be directly influenced, so that the injection molding material is required to be clean and free of dust particles. In view of this, the dust-removing and drying pretreatment process of the injection molding material is of great importance. At present, the dust removal and drying pretreatment of injection molding parts cannot meet the requirements, and particularly, the ABS alloy material in the waste is limited to be recycled. Therefore, a dust removal and drying pretreatment process suitable for injection molding materials is urgently needed to be researched.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a dust removal and drying pretreatment process for an ABS alloy injection molding material, so that the clean pretreated ABS alloy injection molding material with no moisture content and extremely low dust particles is obtained, and the quality of the prepared ABS alloy injection molding product is greatly improved and the service life is long.
The technical scheme adopted by the invention is as follows: the invention provides a dust removal drying pretreatment process of an ABS alloy injection molding material, which comprises the following steps:
a. preparing materials: weighing all the raw materials according to the weight parts of the raw materials for the ABS alloy injection molding material;
b. dust removal and cleaning: b, respectively putting the raw materials of the ABS alloy injection molding material prepared in the step a into an ultrasonic cleaner for ultrasonic treatment, then washing with water, and then washing with ethanol;
c. and (3) vacuum drying: placing at least one container for containing injection molding materials into a vacuum drying oven for vacuumizing treatment, and heating, baking and drying through a bidirectional convection circulation system of the drying oven;
d. and (3) pretreating raw materials, namely placing the injection molding material in a high-speed mixer, mixing for 10 ~ 15min, adding the obtained mixture into a double-screw extruder through a main feeding port, heating and melting, extruding and granulating, and drying the obtained granules in the step c at the drying temperature of 80 ~ 90 ℃ for 3 ~ 5 hours to obtain the pretreated ABS alloy injection molding granules.
Further, in the step a, the raw materials of the ABS alloy injection molding material comprise: ABS resin particles, PMMA resin particles, PC resin particles, reinforcing agents, modifiers, compatilizers, polytetrafluoroethylene, dispersing agents, silane coupling agents, antioxidants, heat stabilizers, lubricants, toughening agents and toner.
Further, the reinforcing agent is one or more of glass fiber and carbon nano material.
Further, the modifier comprises one or more of nano titanium dioxide, nano silicon dioxide, nano zirconium dioxide, superfine aluminum oxide, superfine barium sulfate, superfine talcum powder, nano zinc oxide, montmorillonite and zeolite.
And further, the ultrasonic cleaning solution in the step b is one or more of water and ethanol, the ultrasonic time in the step b is 20 ~ 30min, the ultrasonic frequency is 40KHz, and the ultrasonic power is 350 ~ 500W.
Further, the vacuum degree of the vacuum treatment in the step c is-91 KPa ~ -75 KPa.
Further, the drying temperature of the step c does not exceed the melting point of the injection molding material, and the drying time is 1 ~ 5 hours.
Preferably, the drying temperature in step c is 80 ~ 120 deg.C
Further, the heating temperature in the step d is controlled at 230 ~ 245 ℃, the screw revolution of the twin-screw extruder is 350 ~ 500rpm, the drying temperature is 80 ~ 90 ℃, and the drying time is 3 ~ 5 hours.
The invention has the beneficial effects that:
(1) the invention provides a dust removal drying pretreatment process of an ABS alloy injection molding material, which comprises the steps of material preparation, dust removal cleaning, vacuum drying and raw material pretreatment to obtain the clean pretreated ABS alloy injection molding material with no moisture content and extremely low dust particles. The dedusting and drying pretreatment process of the ABS alloy injection molding material is simple, high in production efficiency, low in cost and environment-friendly. The ABS alloy injection molding product prepared from the pretreated ABS alloy injection molding material obtained by the process has greatly improved quality and long service life, and has excellent performance when being applied to parts of household appliances such as refrigerators, washing machines, purifiers, air conditioners and the like.
Detailed Description
The invention will be further elucidated by means of several specific examples, which are intended to be illustrative only and not limiting.
Example 1:
a dust removal drying pretreatment process for an ABS alloy injection molding material comprises the following steps:
a. preparing materials: weighing all the raw materials according to the weight parts of the raw materials for the ABS alloy injection molding material;
b. dust removal and cleaning: b, respectively putting the raw materials of the ABS alloy injection molding material prepared in the step a into an ultrasonic cleaner for ultrasonic treatment, then washing with water, and then washing with ethanol;
c. and (3) vacuum drying: placing at least one container for containing injection molding materials into a vacuum drying oven for vacuumizing treatment, and heating, baking and drying through a bidirectional convection circulation system of the drying oven;
d. and (3) pretreating raw materials, namely placing the injection molding material in a high-speed mixer, mixing for 10 ~ 15min, adding the obtained mixture into a double-screw extruder through a main feeding port, heating and melting, extruding and granulating, and drying the obtained granules in the step c at the drying temperature of 80 ~ 90 ℃ for 3 ~ 5 hours to obtain the pretreated ABS alloy injection molding granules.
Further, in the step a, the raw materials of the ABS alloy injection molding material comprise: ABS resin particles, PMMA resin particles, PC resin particles, reinforcing agents, modifiers, compatilizers, polytetrafluoroethylene, dispersing agents, silane coupling agents, antioxidants, heat stabilizers, lubricants, toughening agents and toner.
Further, the reinforcing agent is glass fiber.
Further, the modifier comprises nano titanium dioxide, nano zirconium dioxide, nano zinc oxide and montmorillonite.
Further, the ultrasonic cleaning solution in the step b is one or more of water and ethanol; and c, performing ultrasonic treatment for 30min in the step b, wherein the ultrasonic frequency is 40KHz, and the ultrasonic power is 350W.
Further, the vacuum degree of the vacuum treatment in the step c is-91 KPa ~ -75 KPa.
Further, the drying temperature of the step c does not exceed the melting point of the injection molding material, and the drying time is 1 ~ 5 hours.
Preferably, the drying temperature in step c is 120 deg.C
Further, the heating temperature in the step d is controlled at 245 ℃, and the screw revolution of the double-screw extruder is 500 rpm; the drying temperature is 90 ℃, and the drying time is 3 hours.
The water content of the obtained pretreated ABS alloy injection molding particles is lower than 0.02 percent, and the dust particle content is lower than 0.06 percent.
Example 2:
a dust removal drying pretreatment process for an ABS alloy injection molding material comprises the following steps:
a. preparing materials: weighing all the raw materials according to the weight parts of the raw materials for the ABS alloy injection molding material;
b. dust removal and cleaning: b, respectively putting the raw materials of the ABS alloy injection molding material prepared in the step a into an ultrasonic cleaner for ultrasonic treatment, then washing with water, and then washing with ethanol;
c. and (3) vacuum drying: placing at least one container for containing injection molding materials into a vacuum drying oven for vacuumizing treatment, and heating, baking and drying through a bidirectional convection circulation system of the drying oven;
d. and (3) pretreating raw materials, namely placing the injection molding material in a high-speed mixer, mixing for 10 ~ 15min, adding the obtained mixture into a double-screw extruder through a main feeding port, heating and melting, extruding and granulating, and drying the obtained granules in the step c at the drying temperature of 80 ~ 90 ℃ for 3 ~ 5 hours to obtain the pretreated ABS alloy injection molding granules.
Further, in the step a, the raw materials of the ABS alloy injection molding material comprise: ABS resin particles, PMMA resin particles, PC resin particles, reinforcing agents, modifiers, compatilizers, polytetrafluoroethylene, dispersing agents, silane coupling agents, antioxidants, heat stabilizers, lubricants, toughening agents and toner.
Further, the reinforcing agent is glass fiber.
Further, the modifier comprises nano zirconium dioxide, superfine aluminum oxide, superfine barium sulfate and superfine talcum powder.
Further, the ultrasonic cleaning solution in the step b is one or more of water and ethanol; and c, performing ultrasonic treatment for 25min in the step b, wherein the ultrasonic frequency is 40KHz, and the ultrasonic power is 450W.
Further, the vacuum degree of the vacuum treatment in the step c is-91 KPa ~ -75 KPa.
Further, the drying temperature of the step c does not exceed the melting point of the injection molding material, and the drying time is 4 hours.
Preferably, the drying temperature in step c is 100 deg.C
Further, the heating temperature in the step d is controlled at 230 ℃, and the screw revolution of the double-screw extruder is 400 rpm; the drying temperature is 80 ℃, and the drying time is 4 hours.
The water content of the obtained pretreated ABS alloy injection molding particles is lower than 0.04 percent, and the dust particle content is lower than 0.07 percent.
Example 3:
a dust removal drying pretreatment process for an ABS alloy injection molding material comprises the following steps:
a. preparing materials: weighing all the raw materials according to the weight parts of the raw materials for the ABS alloy injection molding material;
b. dust removal and cleaning: b, respectively putting the raw materials of the ABS alloy injection molding material prepared in the step a into an ultrasonic cleaner for ultrasonic treatment, then washing with water, and then washing with ethanol;
c. and (3) vacuum drying: placing at least one container for containing injection molding materials into a vacuum drying oven for vacuumizing treatment, and heating, baking and drying through a bidirectional convection circulation system of the drying oven;
d. and (3) pretreating raw materials, namely placing the injection molding material in a high-speed mixer, mixing for 10 ~ 15min, adding the obtained mixture into a double-screw extruder through a main feeding port, heating and melting, extruding and granulating, and drying the obtained granules in the step c at the drying temperature of 80 ~ 90 ℃ for 3 ~ 5 hours to obtain the pretreated ABS alloy injection molding granules.
Further, in the step a, the raw materials of the ABS alloy injection molding material comprise: ABS resin particles, PMMA resin particles, PC resin particles, reinforcing agents, modifiers, compatilizers, polytetrafluoroethylene, dispersing agents, silane coupling agents, antioxidants, heat stabilizers, lubricants, toughening agents and toner.
Further, the reinforcing agent is carbon nanotubes.
Further, the modifier comprises nano silicon dioxide, nano zirconium dioxide and superfine aluminum oxide.
Further, the ultrasonic cleaning solution in the step b is one or more of water and ethanol; and c, performing ultrasonic treatment for 30min in the step b, wherein the ultrasonic frequency is 40KHz, and the ultrasonic power is 500W.
Further, the vacuum degree of the vacuum treatment in the step c is-91 KPa ~ -75 KPa.
Further, the drying temperature of the step c does not exceed the melting point of the injection molding material, and the drying time is 1 ~ 5 hours.
Preferably, the drying temperature in step c is 80 deg.C
Further, the heating temperature in the step d is controlled at 240 ℃, and the screw revolution of the double-screw extruder is 350 rpm; the drying temperature is 85 ℃, and the drying time is 3 hours.
The water content of the obtained pretreated ABS alloy injection molding particles is lower than 0.05 percent, and the dust particle content is lower than 0.04 percent.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A dust removal drying pretreatment process for an ABS alloy injection molding material is characterized by comprising the following steps: the method comprises the following steps:
a. preparing materials: weighing all the raw materials according to the weight parts of the raw materials for the ABS alloy injection molding material;
b. dust removal and cleaning: b, respectively putting the raw materials of the ABS alloy injection molding material prepared in the step a into an ultrasonic cleaner for ultrasonic treatment, then washing with water, and then washing with ethanol;
c. and (3) vacuum drying: placing at least one container for containing injection molding materials into a vacuum drying oven for vacuumizing treatment, and heating, baking and drying through a bidirectional convection circulation system of the drying oven;
d. and c, pretreating raw materials, namely placing the injection molding material in a high-speed mixer to mix for 10 ~ 30min, adding the obtained mixture into a double-screw extruder through a main feeding port, heating and melting the mixture, extruding and granulating the mixture, drying the obtained granules in the step c, and drying the granules to obtain the pretreated ABS alloy injection molding granules.
2. The dust removal and drying pretreatment process of the ABS alloy injection molding material according to claim 1, characterized in that: the ABS alloy injection molding material in the step a comprises the following raw materials: ABS resin particles, PMMA resin particles, PC resin particles, reinforcing agents, modifiers, compatilizers, polytetrafluoroethylene, dispersing agents, silane coupling agents, antioxidants, heat stabilizers, lubricants, toughening agents and toner.
3. The dust removal and drying pretreatment process of the ABS alloy injection molding material according to claim 1, wherein the ultrasonic cleaning solution in step b is one or more of water and ethanol, and the ultrasonic time in step b is 20 ~ 30min, the ultrasonic frequency is 40KHz, and the ultrasonic power is 350 ~ 500W.
4. The dust-removing drying pretreatment process for the ABS alloy injection molding material according to claim 1, wherein the vacuum degree of the vacuum treatment in the step c is-91 KPa ~ -75 KPa.
5. The dust-removing drying pretreatment process for the ABS alloy injection molding material according to claim 1, wherein the drying temperature in step c is not higher than the melting point of the injection molding material, and the drying time is 1 ~ 5 hours.
6. The dust-removing drying pretreatment process of the ABS alloy injection molding material according to claim 1, wherein the heating and melting temperature in step d is controlled at 230 ~ 245 ℃, and the number of screw revolutions of the twin-screw extruder is 350 ~ 500 rpm.
7. The dust-removing drying pretreatment process for the ABS alloy injection molding material as claimed in claim 1, wherein the drying temperature in step d is 80 ~ 90 ℃ and the drying time is 3 ~ 5 hours.
8. The dust removal and drying pretreatment process of the ABS alloy injection molding material according to claim 2, characterized in that: the reinforcing agent is one or more of glass fiber and carbon nano material.
9. The dust removal and drying pretreatment process of the ABS alloy injection molding material according to claim 2, characterized in that: the modifier comprises one or more of nano titanium dioxide, nano silicon dioxide, nano zirconium dioxide, superfine aluminum oxide, superfine barium sulfate, superfine talcum powder, nano zinc oxide, montmorillonite and zeolite.
10. The dust-removing drying pretreatment process of the ABS alloy injection molding material according to claim 5, characterized in that the drying temperature is 80 ~ 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936983.2A CN110614733A (en) | 2019-09-29 | 2019-09-29 | Dust removal and drying pretreatment process for ABS alloy injection molding material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910936983.2A CN110614733A (en) | 2019-09-29 | 2019-09-29 | Dust removal and drying pretreatment process for ABS alloy injection molding material |
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| CN110614733A true CN110614733A (en) | 2019-12-27 |
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| CN201910936983.2A Pending CN110614733A (en) | 2019-09-29 | 2019-09-29 | Dust removal and drying pretreatment process for ABS alloy injection molding material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0596538A (en) * | 1991-10-10 | 1993-04-20 | Japan Synthetic Rubber Co Ltd | Recovery of polymer powder |
| CN2499212Y (en) * | 2001-06-18 | 2002-07-10 | 大庆石油化工设计院 | Nitrogen gas drying device for ABS powder material |
| CN104589538A (en) * | 2014-12-24 | 2015-05-06 | 深圳市博世泰机械有限公司 | Dust removing and drying preprocessing method of injection molding materials |
| CN109181205A (en) * | 2018-07-16 | 2019-01-11 | 太仓市意欣塑胶有限公司 | High-strength abrasion-proof type moulding based on ABS alloy modified material |
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| CN2499212Y (en) * | 2001-06-18 | 2002-07-10 | 大庆石油化工设计院 | Nitrogen gas drying device for ABS powder material |
| CN104589538A (en) * | 2014-12-24 | 2015-05-06 | 深圳市博世泰机械有限公司 | Dust removing and drying preprocessing method of injection molding materials |
| CN109181205A (en) * | 2018-07-16 | 2019-01-11 | 太仓市意欣塑胶有限公司 | High-strength abrasion-proof type moulding based on ABS alloy modified material |
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Application publication date: 20191227 |