CN101899204B - Antistatic PC/ASA alloy material and preparation method thereof - Google Patents

Antistatic PC/ASA alloy material and preparation method thereof Download PDF

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CN101899204B
CN101899204B CN 201010118476 CN201010118476A CN101899204B CN 101899204 B CN101899204 B CN 101899204B CN 201010118476 CN201010118476 CN 201010118476 CN 201010118476 A CN201010118476 A CN 201010118476A CN 101899204 B CN101899204 B CN 101899204B
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acid
antistatic
asa
content
toughner
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CN101899204A (en
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李文强
丁宗勤
李辉
罗明华
李荣群
辛敏琦
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Shanghai Kumho Sunny Plastics Co Ltd
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Abstract

The invention relates to an antistatic PC/ASA alloy material and a preparation method thereof. The antistatic PC/ASA alloy material comprises the following components: 50-80wt% of polycarbonate, 5-20wt% of ASA resin, 0-15wt% of SAN resin, 1-5wt% of flexibilizer, 7-20wt% of antistatic agent, 1-5wt% of tetrapod-like zinc oxide whisker, 0.1-1wt% of oxidation inhibitor and 0.1-2wt% of lubricating agent. The preparation method thereof comprises the following steps: premixing the raw materials in a high-speed mixer for 3-10min; then adding the premix compound into a double-screw extruder, and carrying out melt extrusion at the temperature of 230-270 DEG C, wherein the rotating speed of the double-screw extruder is 300-500rpm; and cooling and granulating to obtain the product. Compared with the prior art, the invention the advantages of excellent antistatic and anti-impact performances and the like.

Description

A kind of antistatic PC/ASA alloy material and preparation method thereof
Technical field
The present invention relates to technical field of alloy material, be specifically related to a kind of antistatic PC/ASA alloy material and preparation method thereof.
Background technology
Polycarbonate (PC) has remarkable performance, and as shock resistance, flame-retarding characteristic, dimensional stability, little, the high heat resistance of creep, it is tasteless, odorless, transparent etc., and it is widely used as engineering materials.The ASA resin is the graft copolymer that acrylate, vinylbenzene and vinyl cyanide are formed, owing to replaced the polybutadiene rubber among the ABS with the acrylic elastomer of no double bond structure, its weathering resistance is exceeded about 10 times than ABS.Simultaneously, it also has high impact properties, high physical strength, good thermotolerance, chemical proofing and splendid tint permanence.The PC/ASA alloy has the advantage of PC and ASA concurrently, alloy can improve resistance toheat and the physical strength of ASA on the one hand, alloy can reduce the melt strength of PC on the other hand, improve processing characteristics, can be used for moulding big area and complicated goods, can reduce simultaneously the internal stress of goods, improve the low-temperature impact-resistant performance.
In general, polycarbonate (PC) and ASA resin all are good electric insulating quality materials, and its volume specific resistance is very high, is about 1.0E+16ohm.cm, be easily to produce accumulation of static electricity in use, cause dust suction, electric shock even produce bad phenomenon such as spark discharge.Because the more and more higher requirement of plastic component secondary processing (as application) and the develop rapidly of electronics, electrical equipment and microelectronics, problems such as the deficient manufacturing procedure that causes because of static and material damage increase, and influence serious day by day.In order to address these problems, require material to have excellent electroconductibility or static resistance.
Usually, thermoplastic resin obtains the method for static resistance, generally adopts intrinsically conducting polymer or conductive filler material filling thermoplastic resin, perhaps adopts resin and organic antistatic agents blend, perhaps adopts anti-static coating to apply to molded product or film.
FR-B-1239 902 has described the ethylene oxide/propylene oxide triblock copolymer and has shown antistatic property for PMMA, PVC, PE, PS and ABS moulding compound.
DE-A1-1 981 7993 has described the ABS plastic that antistatic property is provided with the special triblock copolymer of X-Y-X, this multipolymer has the mid-block Y of propylene oxide units and the end block X of ethylene oxide unit, and the average content of ethylene oxide unit in these segmented copolymers is 2-35wt%.
DE-A 1244398 has described the purposes of polypropylene glycol as the static inhibitor of ABS resin.But must use in a large number, this causes the stain of finished product assembly to exist easily.
EP-A-0278348 has described the PC/ABS moulding compound that uses special polyalkylene ether that antistatic property is provided.Employed polyalkylene ether passes through to form free radical, thereby increases them as anlistatig efficient.
The conductive filler material that CN 101215413A adopts is one or more in graphitized carbon black, conductive carbon fibres or the carbon nanotube.
In the above-mentioned prior art, though material has suitable antistatic property, can not guarantee long-acting static resistance, good shock resistance and formability simultaneously.And the PC/ASA alloy material is antistatic not to appear in the newspapers as yet.
In recent years, the aspect research of polyether ester amides class organic antistatic agents is more, someone uses such static inhibitor separately and finds in the PC/ASA system, though certain antistatic effect is arranged, but because of its addition excessive, thermo-oxidative ageing and the degraded that causes the PC material easily take place in the course of processing, cause especially declining to a great extent of impact property of the mechanical property of materials.
Summary of the invention
Purpose of the present invention is exactly to provide antistatic PC/ASA alloy material of a kind of static resistance, impact resistance excellence and preparation method thereof for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of antistatic PC/ASA alloy material, it is characterized in that, comprise following component and content: polycarbonate 50-80wt%, ASA resin 5-20wt%, SAN resin 0-15wt%, toughner 1-5wt%, static inhibitor 7-20wt%, four acicular type zinc oxide crystal whisker 1-5wt%, oxidation inhibitor 0.1-1wt%, lubricant 0.1-2wt%.
The molecular weight of described polycarbonate is 17000-30000g/mol, and its second-order transition temperature is 145-150 ℃, the preferred 60-70wt% of the content of described polycarbonate.
Described ASA resin is the graft copolymer that acrylate-styrene-acrylonitrile is formed, and rubber content is at 40-70%, the preferred 13-14wt% of described ASA resin content; Described SAN resin is styrene-acrylonitrile copolymer, and melting index is at 15-70g/10min, the preferred 9-11wt% of described SAN resin content.
Described toughner is selected from one or more in physics plasticized modifier or the chemical plasticized modifier, described physics plasticized modifier comprises acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, the ethylene-propylene acid butyl ester, acrylonitrile-butadiene-styrene copolymer toughner, acrylonitrile-butadiene-acrylate copolymer or MBS, described chemical toughner comprises ethylene-acrylate-glycidyl methacrylate terpolymer, ethylene-vinyl acetate copolymer-functionalization maleic anhydride or styrene-ethylene butylene-styrene trimer-functionalization maleic anhydride; The preferred 2-3wt% of described toughner content.
Described static inhibitor is polyetheramides, and polyether ester amides or polyether ester are by polyamide compound and/or petchem and contain segmented copolymer and the graft copolymer that alkylene oxide unit compound reacts; The preferred 10-13wt% of described static inhibitor content.
Described polyamide compound comprises: aminocarboxylic acid, and lactan, the salt of diamines and dicarboxylic acid and these can form the mixture of polyamide compound; Preferred polyamide compound is hexanolactam, 12 amino dodecylic acids, or the combination of hexanediamine adipate;
Described petchem is the combination of dicarboxylic acid and aliphatic diol, and described dicarboxylic acid comprises aromatic dicarboxylic acid, alicyclic ring dicarboxylic acid or aliphatic dicarboxylic acid, described aliphatic diol is ethylene glycol, 1,2 propylene glycol, 1,3 propylene glycol, 1,2 butyleneglycols, 1,4 butyleneglycol, 1,3 butyleneglycols, neopentyl glycol or hexylene glycol;
Described to contain poly-alkylene oxide unit compound be polyoxyethylene glycol, polypropylene glycol, the block of polytetramethylene glycol or oxyethane and tetrahydrofuran (THF) or random copolymers.
Described aminocarboxylic acid is selected from that omega-amino-caproic acid, omega-amino-enanthic acid, omega-amino-are sad, in the omega-amino-n-nonanoic acid, the acid of omega-amino-certain herbaceous plants with big flowers, the amino undecanoic acid of 11-, 12 amino dodecylic acids one or more; Described lactan is hexanolactam or oenantholactam, and the salt of described diamines and dicarboxylic acid is the hexanediamine adipate;
Described aromatic dicarboxylic acid is m-phthalic acid, terephthalic acid, phthalic acid or naphthalene-2, the 6-dicarboxylic acid; Described alicyclic ring dicarboxylic acid is 1,3-pentamethylene dicarboxylic acid or 1,4-cyclohexane dicarboxylic acid; Described aliphatic dicarboxylic acid is succsinic acid, oxalic acid, hexanodioic acid or sebacic acid; The preferred m-phthalic acid of described dicarboxylic acid, terephthalic acid, 1,4-cyclohexane dicarboxylic acid or sebacic acid; The preferred ethylene glycol of described aliphatic diol, 1,2 propylene glycol, 1,3 propylene glycol or 1,4 butyleneglycol.
Described four acicular type zinc oxide crystal whisker is white loose shape powder, three-dimensional four needle-like microstructures, three-dimensional evenly distribution in body material, wherein ZnO content is 99.9%~100%, needles length is 5~200 μ m, needles base diameter 0.1~10 μ m, volume specific resistance 1.0E+4~1.0E+9ohm.cm, the preferred 3-4wt% of described four acicular type zinc oxide crystal whisker content.
Described oxidation inhibitor is phenols and/or phosphite ester compound, comprise triphenylphosphate, four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester or three (2.4-di-tert-butyl-phenyl) phosphorous acid ester, the preferred 0.4-0.5wt% of described antioxidant content; Described lubricant comprises soap, fatty acid amide and/or mixture, silane polymer, solid paraffin, whiteruss, calcium stearate, Zinic stearas, stearic amide, silicone powder, methylene bis stearic amide or N, N '-ethylene bis stearic acid amide, the preferred 0.3-0.5wt% of described lubricant content.
The preparation method of a kind of antistatic PC/ASA alloy material, it is characterized in that, this method is with polycarbonate 50-80wt%, ASA resin 5-20wt%, SAN resin 0-15wt%, toughner 1-5wt%, static inhibitor 7-20wt%, four acicular type zinc oxide crystal whisker 1-5wt%, oxidation inhibitor 0.1-1wt%, lubricant 0.1-2wt% is premix 3-10min in high-speed mixer, then Preblend is joined in the twin screw extruder, melt extrude under 230-270 ℃, screw rod machine rotating speed is 300-500rpm, and cooling granulation namely gets product.
Compared with prior art, the present invention adds the antistatic effect that a spot of four acicular type zinc oxide crystal whisker material significantly improves alloy material in the PC/ASA alloy system that with polyether ester amides or polyetheramides is static inhibitor.And, (volume specific resistance is in 1.0E+4~1.0E+9ohm.cm) and four acicular microstructure (because tunnel effect because himself characteristic of semiconductor, improve electroconductibility by charge transfer), can reduce the addition of polyether ester amides or polyetheramides static inhibitor to a certain extent.Because its addition lacks and can reduce the consumption of static inhibitor, make material obtaining the electrostatic while of excellent anti, guarantee material favorable mechanical performance again.
Embodiment
In order better to understand and to implement, describe antistatic PC of the present invention/ASA alloy material and preparation method thereof in detail below in conjunction with embodiment.
Embodiment 1-3/ Comparative Examples 1-4:
(1) get the raw materials ready according to following component, each component concentration is as shown in table 1: polycarbonate (PC), ASA resin, SAN resin, toughner, static inhibitor, four acicular type zinc oxide crystal whisker, oxidation inhibitor, lubricant, and each component concentration is corresponding to formulation data in the table 2;
(2) with above material in super mixer premix 3-10 minute;
(3) twin screw extruder is passed through in Preblend, melt extrude under 230-270 ℃, the rotating speed of screw rod machine is 300-500rpm, and cooling granulation namely obtains product.
(2) material is formed:
Table 1 test materials
Write a Chinese character in simplified form material
A1 is available from Sam Yag double phenol polycarbonate Trirex 3025, molecular weight is about 22000-24000;
A2 is available from the XC-400 of KUMHO, and rubber content is 50%;
A3 is available from the SAN350F of KUMHO, and MI is 65;
A4 has the silicon rubber-acrylate impact modifier of nucleocapsid structure, by the S-2001 of Mitsubishi's production;
The A5 static inhibitor, commercially available;
The A6 four acicular type zinc oxide crystal whisker, commercially available;
The A7 wollastonite, particle diameter is at 10 μ m, and is commercially available;
B1 is phosphite ester kind antioxidant IRGAFOS 168, hindered phenol IRGANOX 245, its weight ratio is 1: 1;
B2 is pentaerythritol stearate (PETS), and is commercially available.
Each component of table 2 and content
Component (kg) Embodiment 1 Embodiment 2 Embodiment 3 Comparative Examples 1 Comparative Examples 2 Comparative Examples 3 Comparative Examples 4
A1 60.3 60.3 60.3 60.3 60.3 60.3 61.3
A2 13 14 14 13 14 12 20
A3 9 10 11 10 10 7 15
A4 3 3 3 3 3 3 3
A5 13 11 10 13 17 17 /
A6 1 3 5 / / / /
A7 / / / / / 3 /
B1 0.4 0.4 0.4 0.4 0.4 0.4 0.4
B2 0.3 0.3 0.3 0.3 0.3 0.3 0.3
(3) performance test
Before the preparation batten, particle is fully dry, prepare and test after placing 24h behind the batten.
Use a sea day injection moulding machine to inject all kinds of test bars and colour table.
The tensile strength test ... according to the ISO-527 standard testing, draw speed is 50mm/min;
The Izod shock strength ... according to the ISO-180 standard testing;
Heat-drawn wire ... according to the ISO-75 standard testing;
Surface resistivity ... according to the ASTM-D257 standard testing;
Volume specific resistance ... according to the ASTM-D257 standard testing;
Table 3 test result
Project Implement Implement Implement Contrast Contrast Contrast Contrast
Example 1 Example 2 Example 3 Example 1 Example 2 Example 3 Example 4
MI(230℃×10kg) /g/10min 30.5 25.6 22.8 33.6 52.7 55.7 12.1
Tensile strength/Mpa 52.1 54.2 55.6 50.2 46.3 47.1 58.6
IZOD notch shock/KJ/m2 48.6 55.3 52.3 46.5 25.5 22.6 70.5
HDT(1.8Mpa)/℃ 99.3 101.1 103.1 98.7 95.6 96.8 106.3
Surface resistivity/Ohms/sq 2.7E+ 12 2.3E+ 11 3.1E+ 10 5.4E+ 13 3.2E+ 11 3.5E+ 11 1.3E+ 16
Volume specific resistance/Ohms-cm 3.7E+ 13 2.7E+ 11 5.2E+ 10 2.6E+ 14 4.5E+ 11 4.3E+ 11 2.1E+ 17
From embodiment 1-3 and Comparative Examples 1-4 as can be seen, the adding of (1) four acicular type zinc oxide crystal whisker can effectively strengthen the antistatic effect of polyether ester amides class material, and surface resistivity and volume resistance significantly reduce; (2) adding of four acicular type zinc oxide crystal whisker can also suitably reduce the add-on of polyether ester amides class material, guarantees the mechanical property of material.
Embodiment 5
Each component of a kind of antistatic PC/ASA alloy material is formed:
Get the raw materials ready according to following component, each component concentration is as follows: polycarbonate (PC) 50kg, ASA resin 20kg, SAN resin 15kg, toughner 5kg, static inhibitor 7kg, four acicular type zinc oxide crystal whisker 1kg, oxidation inhibitor 1kg, lubricant 1kg.
Embodiment 6
Each component of a kind of antistatic PC/ASA alloy material is formed:
Get the raw materials ready according to following component, each component concentration is as follows: polycarbonate (PC) 80kg, ASA resin 5kg, toughner 1kg, static inhibitor 8.8kg, four acicular type zinc oxide crystal whisker 5kg, oxidation inhibitor 0.1kg, lubricant 0.1kg;
The preparation method of embodiment 5-6 and performance test methods are with embodiment 1-3 and Comparative Examples 1-4.
Embodiment 7
The preparation method of a kind of antistatic PC/ASA alloy material, this method are with polycarbonate 55kg, ASA resin 6kg, SAN resin 10kg, toughner 3kg, static inhibitor 20kg, four acicular type zinc oxide crystal whisker 3kg, oxidation inhibitor 1kg, lubricant 2kg is premix 3min in high-speed mixer, then Preblend is joined in the twin screw extruder, melt extrudes under 230 ℃, screw rod machine rotating speed is 300rpm, and cooling granulation namely gets product.
Embodiment 8
The preparation method of a kind of antistatic PC/ASA alloy material, this method are with polycarbonate 70kg, ASA resin 10kg, SAN resin 1kg, toughner 3kg, static inhibitor 11kg, four acicular type zinc oxide crystal whisker 4kg, oxidation inhibitor triphenylphosphate 0.6kg, lubricant solids paraffin 0.4kg premix 10min in high-speed mixer joins Preblend in the twin screw extruder then, melt extrudes under 270 ℃, screw rod machine rotating speed is 800rpm, and cooling granulation namely gets product.
The molecular weight of described polycarbonate is 30000g/mol, and its second-order transition temperature is 150 ℃, and polycarbonate is that aromatic polycarbonate resin is to adopt the ordinary method reaction to make by two (4-hydroxy phenyl) ethane of 1,1-and diphenyl carbonate; Described ASA resin is the graft copolymer that commercial acrylate-styrene-acrylonitrile is formed, and rubber content is 70%; Described SAN resin is commercial styrene-acrylonitrile copolymer, and melting index is at 70g/10min; Described toughner is commercially available ethylene-acrylate-glycidyl methacrylate terpolymer; Described static inhibitor is segmented copolymer and the graft copolymer that obtains by the block of 12 amino dodecylic acids and oxyethane and tetrahydrofuran (THF) or random copolymers reaction; Described four acicular type zinc oxide crystal whisker is white loose shape powder, three-dimensional four needle-like microstructures, three-dimensional evenly distribution in body material, wherein ZnO content is 99.9%~100%, needles length is 5~200 μ m, needles base diameter 0.1~10 μ m, volume specific resistance 1.0E+4~1.0E+9ohm.cm.
Embodiment 9
The preparation method of a kind of antistatic PC/ASA alloy material, this method is with polycarbonate 60kg, ASA resin 11kg, SAN resin 10kg, toughner 2kg, static inhibitor 12kg, four acicular type zinc oxide crystal whisker 4kg, oxidation inhibitor four [β-(3,5-di-t-butyl 4-hydroxy phenyl) propionic acid] pentaerythritol ester 0.5kg, lubricant stearic acid calcium 0.5kg premix 5min in high-speed mixer, then Preblend is joined in the twin screw extruder, melt extrude under 250 ℃, screw rod machine rotating speed is 600rpm, and cooling granulation namely gets product.
The molecular weight of described polycarbonate is 17000g/mol, and its second-order transition temperature is 145 ℃, and polycarbonate is that aromatic polycarbonate resin is to adopt the ordinary method reaction to make by two (4-hydroxy phenyl) propane of 2,2-and carbon phthalein chlorine; Described ASA resin is the graft copolymer that commercial acrylate-styrene-acrylonitrile is formed, and rubber content is 40%; Described SAN resin is commercial styrene-acrylonitrile copolymer, and melting index is at 15g/10min; Described toughner is commercially available ethylene-methyl acrylate; Described static inhibitor is segmented copolymer and the graft copolymer that obtains by hexanolactam and m-phthalic acid, ethylene glycol and polyoxyethylene glycol reaction; Described four acicular type zinc oxide crystal whisker is white loose shape powder, three-dimensional four needle-like microstructures, three-dimensional evenly distribution in body material, wherein ZnO content is 99.9%~100%, needles length is 5~200 μ m, needles base diameter 0.1~10 μ m, volume specific resistance 1.0E+4~1.0E+9ohm.cm.
Above-mentioned static inhibitor is polyetheramides, polyether ester amides and polyether ester.Example comprises: be segmented copolymer and graft copolymer by the compound that forms polymeric amide and/or the compound that forms polyester and the compound reaction that contains the alkylene oxide unit are obtained.
The compound that forms polymeric amide comprises: aminocarboxylic acid, for example omega-amino-caproic acid/enanthic acid/sad/n-nonanoic acid/certain herbaceous plants with big flowers acid, the amino undecanoic acid of 11-and 12 amino dodecylic acids; Lactan is as hexanolactam and oenantholactam; The salt of diamines and dicarboxylic acid is as the hexanediamine adipate; And these can form the mixture of polyamide compound.Preferred polyamide compound is hexanolactam, 12 amino dodecylic acids, or the combination of hexanediamine adipate.
The petchem that forms comprises the combination of dicarboxylic acid and aliphatic diol.The example of dicarboxylic acid comprises: aromatic dicarboxylic acid, as/right/phthalic acid, naphthalene-2,6-dicarboxylic acid; The alicyclic ring dicarboxylic acid is as 1,3-pentamethylene dicarboxylic acid, 1,4-cyclohexane dicarboxylic acid; Aliphatic dicarboxylic acid, as succsinic acid, oxalic acid, hexanodioic acid, sebacic acid.The aliphatic diol example comprises: ethylene glycol, 1,2 propylene glycol, 1,3 propylene glycol, 1,2 butyleneglycol, 1,4 butyleneglycol, 1,3 butyleneglycol, neopentyl glycol and hexylene glycol.Preferred dicarboxylic acid is :/terephthalic acid, 1,4-cyclohexane dicarboxylic acid, sebacic acid.Preferred glycol is: ethylene glycol, 1,2 propylene glycol, 1,3 propylene glycol and 1,4 butyleneglycol.
The available compound that contains poly-alkylene oxide unit (as polyoxyethylene glycol, polypropylene glycol, the block of polytetramethylene glycol and oxyethane and tetrahydrofuran (THF) or random copolymers; Obtain diamines by the terminal hydroxy group of saying these glycol with amino displacement; With the dicarboxylic acid that obtains with the carboxyl displacement by the terminal hydroxy group with these glycol) the formation polyetheramides, the polymer anti static agent of polyether ester and polyether ester amides.With regard to these compounds, polyoxyethylene glycol is preferred.

Claims (9)

1. antistatic PC/ASA alloy material, it is characterized in that, comprise following component and content: polycarbonate 50-80wt%, ASA resin 5-20wt%, SAN resin 0-15wt%, toughner 1-5wt%, static inhibitor 7-20wt%, four acicular type zinc oxide crystal whisker 3-4wt%, oxidation inhibitor 0.1-1wt%, lubricant 0.1-2wt%;
Described four acicular type zinc oxide crystal whisker is white loose shape powder, three-dimensional four needle-like microstructures, three-dimensional evenly distribution in body material, wherein ZnO content is 99.9% ~ 100%, needles length is 5~200 μ m, needles base diameter 0.1~10 μ m, volume specific resistance 1.0E+4~1.0E+9ohm.cm.
2. a kind of antistatic PC according to claim 1/ASA alloy material is characterized in that, the molecular weight of described polycarbonate is 17000-30000g/mol, and its second-order transition temperature is 145-150 ℃, and the content of described polycarbonate is 60-70wt%.
3. a kind of antistatic PC according to claim 1/ASA alloy material is characterized in that, described ASA resin is the graft copolymer that acrylate-styrene-acrylonitrile is formed, and rubber content is at 40-70%, and described ASA resin content is 13-14wt%; Described SAN resin is styrene-acrylonitrile copolymer, and melting index is at 15-70g/10min, and described SAN resin content is 9-11wt%.
4. a kind of antistatic PC according to claim 1/ASA alloy material, it is characterized in that, described toughner is selected from one or more in physics plasticized modifier or the chemical plasticized modifier, described physics plasticized modifier comprises acrylic acid or the like toughner, vinylformic acid-silicone rubber kinds toughner, ethylene-methyl acrylate, the ethylene-propylene acid butyl ester, acrylonitrile-butadiene-styrene copolymer toughner, acrylonitrile-butadiene-acrylate copolymer or MBS, described chemical toughner comprises ethylene-acrylate-glycidyl methacrylate terpolymer, ethylene-vinyl acetate copolymer-functionalization maleic anhydride or styrene-ethylene butylene-styrene trimer-functionalization maleic anhydride; Described toughner content is 2-3wt%.
5. a kind of antistatic PC according to claim 1/ASA alloy material, it is characterized in that, described static inhibitor is polyetheramides, polyether ester amides or polyether ester are by polyamide compound and/or petchem and contain segmented copolymer and the graft copolymer that alkylene oxide unit compound reacts; Described static inhibitor content is 10-13wt%.
6. a kind of antistatic PC according to claim 5/ASA alloy material is characterized in that, described polyamide compound is hexanolactam, 12 amino dodecanoic acid, or the combination of hexanediamine adipate;
Described petchem is the combination of dicarboxylic acid and aliphatic diol, and described dicarboxylic acid comprises aromatic dicarboxylic acid, alicyclic ring dicarboxylic acid or aliphatic dicarboxylic acid, described aliphatic diol is ethylene glycol, 1,2-propylene glycol, 1, ammediol, 1, the 2-butyleneglycol, 1,4-butyleneglycol, 1, the 3-butyleneglycol, neopentyl glycol or hexylene glycol;
The described alkylene oxide unit compound that contains is polyoxyethylene glycol, polypropylene glycol, the block of polytetramethylene glycol or oxyethane and tetrahydrofuran (THF) or random copolymers.
7. a kind of antistatic PC according to claim 6/ASA alloy material is characterized in that, described dicarboxylic acid is m-phthalic acid, terephthalic acid, 1,4-cyclohexane dicarboxylic acid or sebacic acid; Described aliphatic diol is ethylene glycol, 1,2-propylene glycol, 1, ammediol or 1,4-butyleneglycol.
8. a kind of antistatic PC according to claim 1/ASA alloy material, it is characterized in that, described oxidation inhibitor is phenols and/or phosphite ester compound, comprise four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester or three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester, described antioxidant content are 0.4-0.5wt%; Described lubricant comprises silane polymer, solid paraffin, whiteruss, calcium stearate, Zinic stearas, stearic amide, silicone powder, methylene bis stearic amide or N, and N '-ethylene bis stearic acid amide, described lubricant content are 0.3-0.5wt%.
9. the preparation method of antistatic PC as claimed in claim 1/ASA alloy material, it is characterized in that, this method is with polycarbonate 50-80wt%, ASA resin 5-20wt%, SAN resin 0-15wt%, toughner 1-5wt%, static inhibitor 7-20wt%, four acicular type zinc oxide crystal whisker 3-4wt%, oxidation inhibitor 0.1-1wt%, lubricant 0.1-2wt% is premix 3-10min in high-speed mixer, then Preblend is joined in the twin screw extruder, melt extrude under 230-270 ℃, screw rod machine rotating speed is 300-500rpm, and cooling granulation namely gets product.
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