CN112625419A - High-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material, preparation method thereof, product thereof and preparation method of product - Google Patents
High-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material, preparation method thereof, product thereof and preparation method of product Download PDFInfo
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- CN112625419A CN112625419A CN202011503675.XA CN202011503675A CN112625419A CN 112625419 A CN112625419 A CN 112625419A CN 202011503675 A CN202011503675 A CN 202011503675A CN 112625419 A CN112625419 A CN 112625419A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 99
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000002131 composite material Substances 0.000 title claims abstract description 56
- 229920007019 PC/ABS Polymers 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims description 21
- 239000002245 particle Substances 0.000 claims abstract description 78
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 27
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 15
- 239000000314 lubricant Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims abstract description 14
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 239000002216 antistatic agent Substances 0.000 claims abstract description 11
- 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 abstract description 8
- 239000000463 material Substances 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 15
- -1 fatty acid ester Chemical class 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 6
- 239000000194 fatty acid Substances 0.000 claims description 6
- 229930195729 fatty acid Natural products 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 229920000388 Polyphosphate Polymers 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000001205 polyphosphate Substances 0.000 claims description 4
- 235000011176 polyphosphates Nutrition 0.000 claims description 4
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 229920006146 polyetheresteramide block copolymer Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000004417 polycarbonate Substances 0.000 description 33
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 29
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 29
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000012994 photoredox catalyst Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
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- 238000004880 explosion Methods 0.000 description 1
- 125000005313 fatty acid group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material, which comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles; the halogen-free flame-retardant PC particles comprise the following raw material components in parts by weight: 50-80 parts of PC, 10-25 parts of talcum powder, 10-25 parts of halogen-free flame retardant, 2-8 parts of impact modifier, 0.1-1 part of antioxidant, 0.1-1 part of lubricant and 0.2-0.8 part of anti-dripping agent; the permanent antistatic ABS particle comprises the following raw material components in parts by weight: 20-70 parts of ABS, 30-80 parts of permanent antistatic agent and 0.1-1 part of antioxidant. According to the invention, by utilizing the characteristic that the melting temperature of the permanent antistatic ABS particles is far lower than that of the halogen-free flame retardant PC particles, most of the halogen-free flame retardant PC particles are distributed in the product and most of the permanent antistatic ABS particles are distributed on the surface of the injection molding product when the product is formed by injection molding, the product which has excellent mechanical properties, good flame retardant effect, continuous and stable antistatic effect, high thermal deformation temperature, good surface gloss and no phenomenon of flame retardant precipitation can be prepared.
Description
Technical Field
The invention relates to the technical field of organic polymer materials, in particular to a high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material, a preparation method thereof, a product thereof and a preparation method of the product.
Background
The PC/ABS composite material has the advantages of excellent surface quality, dimensional stability, forming processing performance, mechanical property and the like, so that the defects of heavy steel material density, easy corrosion, easy electric spark generation, difficult transportation and installation, high processing and manufacturing cost, high maintenance cost and the like of the steel material can be overcome by replacing the traditional steel material parts with the PC/ABS composite material under the coal mine. In recent years, with the advance of replacing steel with plastic, PC/ABS composite materials have been widely applied to the fields of coal mine mechanical parts, coal mine electronic appliances and the like. However, the PC/ABS composite material has high surface resistivity which reaches 1015-1017Omega, surface static electricity is easy to accumulate, and fire or explosion is easy to be caused by surface discharge. Meanwhile, the PC/ABS composite material belongs to a flammable material, and has high combustion speed and large heat release. Therefore, when the PC/ABS composite material is used as a mining material, flame-retardant antistatic treatment is required. When the traditional halogen-free flame retardants such as liquid phosphates (such as BDP, RDP) and solid phosphates are used for PC/ABS alloy, the heat resistance of the composite material can be seriously influenced due to the low melting point of the traditional halogen-free flame retardants, so that the thermal deformation temperature (load of 0.45MPa) is reduced to be below 100 ℃, and the heat resistance requirements of some coal mine electronic appliances can not be met. The traditional antistatic method of the PC/ABS composite material is to add a surfactant type antistatic agent, which can be gradually separated out with the passage of time, the antistatic effect is attenuated, and finally the PC/ABS composite material can completely lose efficacy.
Therefore, a novel high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material needs to be developed, and a product with high heat resistance and excellent flame-retardant antistatic performance is prepared by utilizing the composite material.
Disclosure of Invention
In view of the above, the invention provides a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material, a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product with excellent flame-retardant antistatic performance is prepared by using the composite material, and a preparation method of the composite material product are provided.
The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the invention comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles;
the halogen-free flame-retardant PC particles comprise the following raw material components in parts by weight: 50-80 parts of PC, 10-25 parts of talcum powder, 10-25 parts of halogen-free flame retardant, 2-8 parts of impact modifier, 0.1-1 part of antioxidant, 0.1-1 part of lubricant and 0.2-0.8 part of anti-dripping agent;
the permanent antistatic ABS particle comprises the following raw material components in parts by weight: 20-70 parts of ABS, 30-80 parts of permanent antistatic agent and 0.1-1 part of antioxidant.
Further, the PC is one or more of polycarbonates with any viscosity, and the ABS is one or more of acrylonitrile-butadiene-styrene copolymers with any viscosity.
Furthermore, the particle size mesh number of the talcum powder is more than or equal to 3000 meshes.
Further, the halogen-free flame retardant is Nofia series polyphosphate.
Further, the impact modifier is one or more of ABS-g-GMA, SEBS-g-GMA and acrylate copolymer.
Further, the antioxidant is a hindered phenol antioxidant or a phosphite antioxidant; the lubricant is fatty acid ester or fatty acid amide; the anti-dripping agent is polytetrafluoroethylene master batch, wherein the content of polytetrafluoroethylene is 30-70%; the permanent antistatic agent is polyether ester amide permanent antistatic agent.
The preparation method of the high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the invention comprises the following steps:
(1) uniformly mixing PC, talcum powder, a halogen-free flame retardant, an impact modifier, an antioxidant, a lubricant and an anti-dripping agent according to a ratio to obtain a mixed material I, then carrying out melt extrusion and cooling granulation on the mixed material I by adopting a double-screw extruder under the condition that the processing temperature is 250-280 ℃, and then placing the obtained particles in an oven with the working temperature of 100-120 ℃ for drying for 4-6h to obtain halogen-free flame-retardant PC particles;
(2) and uniformly mixing the ABS, the permanent antistatic agent and the antioxidant according to the proportion to obtain a mixed material II, then carrying out melt extrusion and cooling granulation on the mixed material II by adopting a double-screw extruder under the condition that the processing temperature is 200-230 ℃, and then placing the obtained particles in an oven with the working temperature of 100-120 ℃ for drying for 4-6h to obtain the permanent antistatic ABS particles.
The invention also provides a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product, and the raw materials of the product comprise halogen-free flame-retardant PC particles and permanent antistatic ABS particles.
Further, the mass ratio of the halogen-free flame-retardant PC particles to the permanent antistatic ABS particles is (6-9): (1-4), preferably (7-8): (2-3).
The preparation method of the high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product provided by the invention comprises the following steps:
the halogen-free flame-retardant PC particles and the permanent antistatic ABS particles are taken according to the proportion and evenly mixed, and then the mixed materials are placed in an injection molding machine with the processing temperature of 240-270 ℃ and the injection pressure of 90-120MPa for injection molding, so that the high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product can be prepared.
The invention has the beneficial effects that:
the composite material provided by the invention comprises halogen-free flame-retardant PC particles prepared by adopting a PC substrate and permanent antistatic ABS particles prepared by adopting an ABS substrate, and utilizes the characteristic that the melting temperature of the permanent antistatic ABS particles (the melting temperature is 180-260 ℃) is far lower than that of the halogen-free flame-retardant PC particles (the melting temperature is 240-260 ℃), when the halogen-free flame-retardant PC particles are formed into products by injection molding, the melting temperature of the halogen-free flame-retardant PC particles in the mixed particles is high, the halogen-free flame-retardant PC particles are preferentially cooled and solidified when the halogen-free flame-retardant PC particles are contacted with a mold, thereby most of the halogen-free flame-retardant PC particles are distributed in the product, most of the permanent antistatic ABS particles are distributed on the surface of the injection molding product, the problem that the flame retardant is easy to separate out when the PC/ABS composite material prepared by directly mixing and extruding the raw material components in the traditional process is injected into the product is solved, meanwhile, most of the permanent antistatic ABS is distributed on the surface of the product, so that the surface resistance of the product can be obviously reduced.
The polyphosphate ester serving as a novel halogen-free flame retardant has high flame retardant efficiency, is transparent, has good toughness and has comprehensive performance similar to that of PC, and at least one of Nofia series polyphosphate esters (HM1100 and HM5000) is used as a halogen-free flame retardant of the system, so that the product can keep good heat resistance.
The high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product prepared by the invention has the advantages of excellent mechanical property, good flame-retardant effect, continuous and stable antistatic effect, high thermal deformation temperature, good surface gloss and no flame retardant precipitation phenomenon, and can be used in the flame-retardant antistatic field with various colors and high heat-resistance requirements.
Detailed Description
The following are specific examples:
example 1
The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles; the raw material component proportion of the halogen-free flame-retardant PC particles and the raw material component proportion of the permanent antistatic ABS particles are as follows:
wherein the impact modifier is ABS-g-GMA, the antioxidant is hindered phenol antioxidant, the lubricant is fatty acid ester, and the anti-dripping agent is polytetrafluoroethylene master batch with polytetrafluoroethylene content of 30-70%. The impact modifier can be replaced by one of SEBS-g-GMA and acrylate copolymer or a mixture of at least two of ABS-g-GMA, SEBS-g-GMA and acrylate copolymer; the antioxidant can be replaced by phosphite antioxidant; the lubricant may be replaced with a fatty acid amide.
The preparation method of the high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment comprises the following steps:
(1) uniformly mixing PC, talcum powder, a halogen-free flame retardant, an impact modifier, an antioxidant, a lubricant and an anti-dripping agent according to a ratio to obtain a mixed material I, then carrying out melt extrusion and cooling granulation on the mixed material I by adopting a double-screw extruder under the condition that the processing temperature is 250-280 ℃, then placing the obtained granules in an oven with the working temperature of 110 ℃, and drying for 5 hours to obtain halogen-free flame-retardant PC granules; the double-screw extruder is provided with a plurality of working intervals, and the temperature of each working interval is set according to the range of the processing temperature when the double-screw extruder is set;
(2) and uniformly mixing the ABS, the permanent antistatic agent and the antioxidant according to the proportion to obtain a mixed material II, then carrying out melt extrusion and cooling granulation on the mixed material II by adopting a double-screw extruder under the condition that the processing temperature is 200-230 ℃, then placing the obtained particles in an oven with the working temperature of 110 ℃, and drying for 5 hours to obtain the permanent antistatic ABS particles.
The embodiment also provides a high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product, which comprises the following raw materials in mass ratio of 8:2 halogen-free flame-retardant PC particles and permanently antistatic ABS particles. The preparation method of the product comprises the following steps: the halogen-free flame-retardant PC particles and the permanent antistatic ABS particles are taken according to the proportion and evenly mixed, and then the mixed materials are placed in an injection molding machine with the processing temperature of 240-270 ℃ and the injection pressure of 110MPa for injection molding, so that the high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product can be prepared. The injection molding machine has a plurality of working sections, and the temperature of each working section is set in accordance with the range of the processing temperature when setting.
Example 2
The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles; the raw material component proportion of the halogen-free flame-retardant PC particles and the raw material component proportion of the permanent antistatic ABS particles are as follows:
wherein the impact modifier, antioxidant, lubricant, and anti-drip agent are the same as in example 1.
The preparation method of the high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment is the same as that of embodiment 1.
The embodiment also provides a high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product, and the raw materials of the product comprise halogen-free flame-retardant PC particles and permanent antistatic ABS particles in a mass ratio of 7: 3. The preparation of the article was the same as in example 1.
Example 3
The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles; the raw material component proportion of the halogen-free flame-retardant PC particles and the raw material component proportion of the permanent antistatic ABS particles are as follows:
wherein the impact modifier, antioxidant, lubricant, and anti-drip agent are the same as in example 1.
The preparation method of the high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the embodiment is the same as that of embodiment 1.
The embodiment also provides a high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product, and the raw materials of the product comprise halogen-free flame-retardant PC particles and permanent antistatic ABS particles in a mass ratio of 8: 2. The preparation of the article was the same as in example 1.
Comparative example 1
The raw material components of the halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the comparative example are as follows:
wherein the impact modifier, antioxidant, lubricant, and anti-drip agent used were the same as in example 1.
The preparation method of the halogen-free flame-retardant permanent antistatic PC/ABS composite material comprises the following steps: the preparation method comprises the steps of uniformly mixing the raw material components according to the proportion to obtain a mixed material, carrying out melt extrusion and cooling granulation on the mixed material by adopting a double-screw extruder at the processing temperature of 230-270 ℃, then placing the obtained particles in an oven at the working temperature of 110 ℃, and drying for 5 hours to obtain the halogen-free flame-retardant permanent antistatic PC/ABS particles.
In the comparative example, the obtained halogen-free flame-retardant permanent antistatic PC/ABS particles are placed in an injection molding machine with the processing temperature of 240 ℃ and the injection pressure of 110MPa for injection molding to prepare a comparative product.
Comparative example 2
The raw material components of the halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the comparative example are as follows:
wherein the impact modifier, antioxidant, lubricant, and anti-drip agent used were the same as in example 2.
The preparation method of the halogen-free flame-retardant permanent antistatic PC/ABS composite material and the method for preparing a comparative product by using the composite material are the same as the comparative example 1.
Comparative example 3
The raw material components of the halogen-free flame-retardant permanent antistatic PC/ABS composite material provided by the comparative example are as follows:
wherein the impact modifier, antioxidant, lubricant, and anti-drip agent used were the same as in example 3.
The preparation method of the halogen-free flame-retardant permanent antistatic PC/ABS composite material and the method for preparing a comparative product by using the composite material are the same as the comparative example 1.
The PC/ABS composite articles provided in examples 1-3 and comparative examples 1-3 were subjected to performance testing, the results of which are shown in the following table:
as can be seen from the above table, the halogen-free flame-retardant PC particles and the permanent antistatic ABS particles are prepared according to respective formulas, and then the halogen-free flame-retardant PC particles and the permanent antistatic ABS particles are adopted according to a specific proportion to be injection-molded into a product, so that the surface resistance of the product can be greatly reduced, and the antistatic effect is continuous and stable.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material is characterized in that: comprises halogen-free flame-retardant PC particles and permanent antistatic ABS particles;
the halogen-free flame-retardant PC particles comprise the following raw material components in parts by weight: 50-80 parts of PC, 10-25 parts of talcum powder, 10-25 parts of halogen-free flame retardant, 2-8 parts of impact modifier, 0.1-1 part of antioxidant, 0.1-1 part of lubricant and 0.2-0.8 part of anti-dripping agent;
the permanent antistatic ABS particle comprises the following raw material components in parts by weight: 20-70 parts of ABS, 30-80 parts of permanent antistatic agent and 0.1-1 part of antioxidant.
2. The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material as claimed in claim 1, wherein: the particle size mesh number of the talcum powder is more than or equal to 3000 meshes.
3. The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material as claimed in claim 1, wherein: the halogen-free flame retardant is Nofia series polyphosphate.
4. The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material as claimed in claim 1, wherein: the impact modifier is one or more of ABS-g-GMA, SEBS-g-GMA and acrylate copolymer.
5. The high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material as claimed in claim 1, wherein: the antioxidant is hindered phenol antioxidant or phosphite antioxidant; the lubricant is fatty acid ester or fatty acid amide; the anti-dripping agent is polytetrafluoroethylene master batch, wherein the content of polytetrafluoroethylene is 30-70%; the permanent antistatic agent is polyether ester amide permanent antistatic agent.
6. A preparation method of a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material is characterized by comprising the following steps: the method comprises the following steps:
(1) uniformly mixing PC, talcum powder, a halogen-free flame retardant, an impact modifier, an antioxidant, a lubricant and an anti-dripping agent according to a ratio to obtain a mixed material I, then carrying out melt extrusion and cooling granulation on the mixed material I by adopting a double-screw extruder under the condition that the processing temperature is 250-280 ℃, and then placing the obtained particles in an oven with the working temperature of 100-120 ℃ for drying for 4-6h to obtain halogen-free flame-retardant PC particles;
(2) and uniformly mixing the ABS, the permanent antistatic agent and the antioxidant according to the proportion to obtain a mixed material II, then carrying out melt extrusion and cooling granulation on the mixed material II by adopting a double-screw extruder under the condition that the processing temperature is 200-230 ℃, and then placing the obtained particles in an oven with the working temperature of 100-120 ℃ for drying for 4-6h to obtain the permanent antistatic ABS particles.
7. A high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product is characterized in that: the raw materials of the product comprise halogen-free flame-retardant PC particles and permanent antistatic ABS particles.
8. The highly heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product according to claim 7, characterized in that: the mass ratio of the halogen-free flame-retardant PC particles to the permanent antistatic ABS particles is (6-9): (1-4).
9. A preparation method of a high heat-resistant halogen-free flame-retardant permanent antistatic PC/ABS composite material product is characterized by comprising the following steps: the method comprises the following steps:
the halogen-free flame-retardant PC particles and the permanent antistatic ABS particles are taken according to the proportion and evenly mixed, and then the mixed materials are placed in an injection molding machine with the processing temperature of 240-270 ℃ and the injection pressure of 90-120MPa for injection molding, so that the high-heat-resistance halogen-free flame-retardant permanent antistatic PC/ABS composite material product can be prepared.
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