CN102702660B - Halogen-free and flame retardant ACS (Acrylonitrile-Chlorinated polyethylene-Styrene)/PC (Poly Carbonate) alloy - Google Patents

Halogen-free and flame retardant ACS (Acrylonitrile-Chlorinated polyethylene-Styrene)/PC (Poly Carbonate) alloy Download PDF

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CN102702660B
CN102702660B CN2012101795933A CN201210179593A CN102702660B CN 102702660 B CN102702660 B CN 102702660B CN 2012101795933 A CN2012101795933 A CN 2012101795933A CN 201210179593 A CN201210179593 A CN 201210179593A CN 102702660 B CN102702660 B CN 102702660B
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acs
alloy
halogen
resin
flame retardant
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CN102702660A (en
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傅建永
沈曙光
杜旭华
周文斌
邱琪浩
方义红
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Zhejiang Zhenyang Development Co., Ltd
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NINGBO OCEANKING CHEMICAL DEVELOPMENT Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing

Abstract

The invention relates to a halogen-free and flame retardant ACS (Acrylonitrile-Chlorinated polyethylene-Styrene)/PC (Poly Carbonate) alloy, which is characterized by comprising the following components shown in the specifications in percentage by weight: 44-60% of ACS resin, 8-22% of PC resin, 10-20% of phosphorus based flame retardant, 2-5% of heat stabilizer, 5-10% of compatilizer, 0.4-1% of anti-dripping agent, 0.5-1% of lubricant, and 0.5-1% of antioxygen. According to the halogen-free and flame retardant ACS/PC alloy provided by the invention, the problems of poor weather resistance and the like of the conventional halogen-free and flame retardant ACS/PC alloy are solved basically, high mechanical property and processing performance are achieved, and the cost is appropriate; and the halogen-free and flame retardant ACS/PC alloy can be widely applied in the fields of electronics, electrical appliances, communication, instruments, illumination, automobile parts and the like.

Description

A kind of halogen-free flameproof ACS/PC alloy
Technical field
The present invention relates to the modified-high polymer field, specifically refer to a kind of halogen-free flameproof ACS/PC alloy.
Background technology
Bromine is that flame-proof ABS resin has good over-all properties, but the drawbacks limit such as impelling strength is lower, the feature of environmental protection is not good its use in the field, middle and high end, at present, flame-proof ABS resin is non-halogen is one of its prior development direction, especially itself and PC alloying are study hotspots, particularly halogen-free flame retardant ABS/PC alloy has both premium propertiess of PC, ABS concurrently, mechanical property is good, processing forming is good, resistance toheat is good, and moderate, obtained to apply in fields such as household electrical appliance, office equipment, communication equipment, lighting apparatuss.But because the polybutadiene rubber in ABS contains unsaturated carbon-carbon double bond, be easy to be subject to ultraviolet attack and rupture, weathering resistance is relatively poor, and life-time service, particularly long-term exposure cause easily that in the open air physical strength declines to a great extent, and xanthochromia, cracking phenomena are comparatively serious.
Summary of the invention
Technical problem to be solved by this invention is that the present situation for prior art provides a kind of halogen-free flameproof ACS/PC alloy that has simultaneously good mechanical property and weather resistance.
Another technical problem to be solved by this invention is to provide a kind of preparation method who has simultaneously the halogen-free flameproof ACS/PC alloy of good mechanical property and weather resistance.
The present invention solves the problems of the technologies described above the technical scheme that adopts: this halogen-free flameproof ACS/PC alloy is characterized in that comprising the following weight component:
Wherein said ACS resin is the terpolymer that vinyl cyanide, chlorinatedpolyethylene and vinylbenzene adopt mass polymerization to prepare, and in the ACS resin, the weight-average molecular weight of SAN phase is 18000-24000g/mol, and the weight content of chlorinated polyethylene rubber is 20~30%;
Described PC resin is bisphenol A-type PC resin, and weight-average molecular weight is 18000-25000g/mol, and second-order transition temperature is 125-140 ℃;
Described phosphorus flame retardant is the compound of triphenylphosphate TPP and two (diphenyl phosphate) RDP of Resorcinol, and the weight ratio of RDP and TPP is 3:1~1:1;
Described thermo-stabilizer is selected from least a in rare earth calcium zinc composite thermal stabilizer and Ca-Zn composite heat stabilizer;
Described compatilizer is selected from least a in styrene-maleic anhydride copolymer SMA and maleic anhydride graft acrylonitrile-chloride polyethylene-styrene copolymer ACS-g-MAH;
The particle diameter of described polytetrafluoroethylene PTFE is the 100-200 order;
Described lubricant is pentaerythritol ester PETS;
Described oxidation inhibitor is 1076/626 compound, and 1076 and 626 weight ratio is 4:1~1:1.
Preferably, described thermo-stabilizer is the rare earth calcium zinc composite thermal stabilizer.
Described compatilizer is maleic anhydride graft acrylonitrile-chloride polyethylene-styrene copolymer ACS-g-MAH, and wherein the weight content of maleic anhydride is 2-8%.
The preparation method of above-mentioned halogen-free flameproof ACS/PC alloy is characterized in that comprising the steps:
1), ACS resin 75~85 ℃ of dryings in advance, the PC resin is controlled both moisture contents all below 0.02% in advance 110~130 ℃ of dryings;
2), take ACS resin, PC resin, tetrafluoroethylene, thermo-stabilizer, compatilizer, lubricant and oxidation inhibitor by formula, deliver to extruding pelletization in parallel dual-screw extruding machine after fully mixing, to take side to feed reinforced for phosphorus flame retardant simultaneously; Because phosphorus flame retardant mostly is liquid or low melting point solid, directly the blend interpolation easily causes the blend material to be clamminess, be difficult to blanking, usually adopt band heating liquids metering system feeding in the forcing machine for this reason, the length-to-diameter ratio of parallel dual-screw extruding machine is 32-36, moderate length-to-diameter ratio is under the prerequisite that guarantees the ACS thermal stability, be conducive to the abundant dispersion of material, and control and vacuum evacuating system with accurate temperature, screw speed is 150-300rpm, temperature is 160-230 ℃, residence time 1-2 minute;
3), after material extrudes from twin screw extruder, through tie rod, cooling, pelletizing, obtain at last finished product.
Preferably, the length-to-diameter ratio of described twin screw extruder is 32, and the feeding section temperature is 160-180 ℃, and the melt zone temperature is 200-210 ℃, and the homogenizing zone temperature is 220-230 ℃, and head temperature is 220-225 ℃.
Compared with prior art, the present invention adopts ACS resin and PC resin as matrix resin, combine heat-resisting, high strength and the toughness of weathering resistance, chemical resistant properties and the PC of ACS, make a kind of halogen-free flameproof ACS/PC alloy, on the basis that has kept the original excellent weather resistance energy of ACS resin, significantly improved low-temperature impact toughness and the resistance toheat of ACS; Along with the raising of PC content, the heat-drawn wire of alloy and shock resistance, particularly low-temperature impact toughness have significantly raising; And utilize the phosphoric of phosphoric acid ester fire retardant and the cooperative flame retardant effect between the chlorine element in the ACS resin, reduced the consumption of fire retardant, further reduce production costs; Rare earth and calcium zinc stabilizer are also used and can be brought into play both synergistic effects, significantly improve thermostability, further improve its cost performance; And pentaerythritol ester and calcium zinc heat stabilizer combined effect are remarkable, pentaerythritol ester by with the metal chloride complexing, synergy can suppress zinc and burn phenomenon; The use of compatilizer can significantly improve the consistency of ACS and PC, and can further improve the weathering resistance performance of alloy, and has toughening effect concurrently; Make the ACS/PC alloy of low PC content have higher impact property.
Compare with the ABS/PC alloy phase, the present invention technical scheme adopt the ACS resin to replace ABS, utilize CPE rubber saturated in the ACS resin to substitute the unsaturated polyester divinyl rubber in the ABS resin, weathering resistance significantly improves, the problems such as existing halogen-free flame retardant ABS/PC alloy weathering resistance is bad have been solved, and mechanical property and processing characteristics are good, cost is moderate, but also have certain flame retardant properties and antistatic surface performance, can be widely used in the fields such as electronics, electrical equipment, communication, instrument, illumination and automobile component.
Embodiment
Below in conjunction with embodiment and Comparative Examples, the present invention is described in further detail.
The general purpose grade ACS that ACS 1# selects Ningbo Zhen Yang novel material limited-liability company to produce, the weight-average molecular weight of SAN phase is about 18000g/mol, and chlorinated polyethylene rubber content is 30%.
The general purpose grade ACS that ACS 2# selects Ningbo Zhen Yang novel material limited-liability company to produce, the weight-average molecular weight of SAN phase is about 24000g/mol, and chlorinated polyethylene rubber content is 20%.
The general purpose grade ACS that ACS 3# selects Ningbo Zhen Yang novel material limited-liability company to produce, the weight-average molecular weight of SAN phase is about 28000g/mol, and chlorinated polyethylene rubber content is 40%.
The preparation method of above-mentioned ACS is described below:
The mixing solutions that is dissolved with vinylbenzene, chlorinated polyethylene rubber, vinyl cyanide, solvent, auxiliary agent is entered the tower reactor of three series connection as main charging; at 80~150 ℃; 0.5 under~1.2MPa pressure through polyreaction 6~12 hours; utilize the vacuum condensation system to remove unreacted monomer, solvent etc., reaction finishes to obtain product by high temperature devolatilization extruding pelletization.
ABS selects the PA-757 of Taiwan Qi Mei company.
PC-1# selects the 201-10 of Dow Chemical company, and it is bisphenol A-type, and weight-average molecular weight is 25000g/mol approximately, 140 ℃ of second-order transition temperatures.
PC-2# is selected from the lab scale sample that East China University of Science produces, and weight-average molecular weight is about 31000g/mol, and second-order transition temperature is 152 ℃.
Phosphorus flame retardant is selected TPP and the RDP of Tianjin Lianrui Chemical Co.,Ltd.
The rare earth calcium zinc one package stabilizer is selected the WWP series stablizer of Guangdong Weilinna Function Materials Co., Ltd.
Ca-Zn composite heat stabilizer is selected the 1086F of Zhejiang Hai Pudun novel material limited-liability company.
Compatilizer SMA is selected from the SMAM25 that maritime affairs must reach petrochemical industry Hitek Ltd.
Compatilizer ASA-g-MAH 1# is selected from the KT-15 of logical plastic cement company limited of Shenyang section, maleic anhydride content 2%.
Compatilizer ASA-g-MAH 2# is the 3M of Rizhisheng New Technology Development Co., Ltd., Shanghai, maleic anhydride content 8%.
PTFE selects the FA500B of Da Jin fluorine chemical company limited, particle diameter 100 orders.
Lubricant is selected the PETS of Shanghai China bright auxiliary chemicals company limited.
Oxidation inhibitor is selected 1076 and 626 of Jinhai-Yabao Chemical Co., Ltd., Ningbo.
Table 1 embodiment 1 to embodiment 5 formula
Table 2 embodiment 6 to embodiment 10 formulas
Table 3 Comparative Examples 1 is to Comparative Examples 5 formulas
Table 4 Comparative Examples 6 is to Comparative Examples 10 formulas
Preparation method as table 1 halogen-free flameproof ACS/PC alloy in each embodiment and Comparative Examples to the table 4 follows these steps to carry out:
1,80 ℃ of dry 4h of ACS resin, 120 ℃ of dry 8h of PC resin; Control both moisture contents below 0.02%;
2, take by weight ratio ACS resin, PC resin, Antidrip agent, thermo-stabilizer, compatilizer, lubricant and oxidation inhibitor;
3, above-mentioned raw materials and auxiliary agent are put into high mixer 1000rpm mixing discharging in 10 minutes;
4, the raw material that mixes is put into the parallel dual-screw extruding machine extruding pelletization, phosphorus flame retardant takes to be with heating liquids metering system feeding simultaneously.The length-to-diameter ratio of twin screw extruder used is 32, control and vacuum evacuating system with accurate temperature, the rotating speed of screw machine is 150-300rpm, each section extruder temperature is controlled to be between 160-230 ℃, residence time 1-2 minute, wherein feeding section 160-180 ℃, melt zone 200-210 ℃, homogenizing zone 220-230 ℃, head 220-225 ℃.
5, through tie rod, cooling, pelletizing obtains finished product at last.
The halogen-free flameproof ACS/PC alloy of each embodiment and Comparative Examples preparation is injection molded into the standard batten by standard size carries out various performance tests, the physicals of standard batten is all by the ASTM standard testing, testing method is as shown in table 5, test result as table 6 to as shown in table 9.
Table 5 performance test methods
Table 6 embodiment 1 to embodiment 5 the performance test results
Performance Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5
Izod breach resistance to impact shock J/m 154 180 298 270 304
Tensile strength MPa 46.8 48.2 52.4 48.6 52.5
Flexural strength MPa 66.5 68.4 73.8 69 73.6
Heat-drawn wire ℃ 77.5 78.8 80.4 79.6 82.1
Flame retardant rating 1.6mmV-0 1.6mmV-0 3.2mmV-0 1.6mmV-0 1.6mmV-1
Aberration 4.6 3.7 3 3.5 3.4
Table 7 embodiment 6 to embodiment 10 the performance test results
Performance Embodiment 6 Embodiment 7 Embodiment 8 Embodiment 9 Embodiment 10
Izod breach resistance to impact shock J/m 285 156 275 154 140
Tensile strength MPa 52 46.2 52 50.4 51
Flexural strength MPa 74 64.5 70 68.5 67.4
Heat-drawn wire ℃ 82.5 77.8 78.5 79.4 79.6
Flame retardant rating 1.6mmV-1 3.2mmV-0 1.6mmV-0 1.6mmV-0 1.6mmV-0
Aberration 2.8 4.5 4.2 5.6 5.2
Table 8 Comparative Examples 1 is to Comparative Examples 5 the performance test results
Performance Comparative Examples 1 Comparative Examples 2 Comparative Examples 3 Comparative Examples 4 Comparative Examples 5
Izod breach resistance to impact shock J/m 86 165 305 180 280
Tensile strength MPa 44.8 43 52.8 44.2 52
Flexural strength MPa 66 64.4 74.2 65.5 73.4
Heat-drawn wire ℃ 77.8 79 87.5 77.4 81.6
Flame retardant rating 1.6mmV-0 1.6mmV-0 3.2mmV-2 3.2mmV-0 1.6mmV-1
Aberration 7 4.8 3.1 3.4 4.2
Table 9 Comparative Examples 6 is to Comparative Examples 10 the performance test results
Performance Comparative Examples 6 Comparative Examples 7 Comparative Examples 8 Comparative Examples 9 Comparative Examples 10
Izod breach resistance to impact shock J/m 290 150 165 115 154
Tensile strength MPa 52.1 46.4 45.3 48.5 51.5
Flexural strength MPa 74 65.2 66.4 65.2 68.4
Heat-drawn wire ℃ 82.5 78 77.6 81.5 82
Flame retardant rating 1.6mmV-2 3.2mmV-1 1.6mmV-1 1.6mmV-0 3.2mmV-0
Aberration 2.8 4.5 10.4 5.5 9.6
By table 6 to table 9 as can be known, embodiment 1-6, along with the increase of phosphorus flame retardant consumption, the flame retardant resistance of alloy improves constantly, but heat-drawn wire descends thereupon, weather resistance remains unchanged substantially.The ratio of compound flame retardant RDP and TPP has certain influence to the flame retardant properties of material, has optimum proportion.From embodiment 7-10 as can be known, the consumption of thermo-stabilizer has certain influence to the weather resistance of material, and with the raising of thermo-stabilizer consumption, weather resistance improves gradually.
Comparative Examples 1 adopts 3#ACS, and its CPE cl content is up to 40%, and too high cl content causes the thermostability of CPE bad, and the high temperature process stage is very easily decomposed variable color, causes two-phase consistency variation.Relative embodiment 1, the shock strength of Comparative Examples 1 product declines to a great extent, and aberration significantly improves.
Comparative Examples 2 is selected high molecular PC, and because second-order transition temperature improves, under identical fabrication process condition, the viscosity of alloy system significantly improves, and shear heat evolution increases, and easily impels CPE to decompose variable color.Relative embodiment 2, the over-all properties of Comparative Examples 2 products descends to some extent.
Comparative Examples 3 significantly reduces the phosphorus flame retardant consumption, causes the flame retardant properties of product to decline to a great extent.Relative embodiment 3,2 grades of flame retardant properties decline of Comparative Examples 3 products.
Comparative Examples 4 is used alone phosphorus flame retardant TPP, and owing to lacking the compound synergic effect, flame retardant effect descends.Relative embodiment 4, the flame retardant properties of Comparative Examples 4 products has to a certain degree decline.
Comparative Examples 5 adopts separately a kind of oxidation inhibitor 626, and owing to lacking the compound synergic effect, even addition is increased to 1.5%, the practical probation effect is also not as good as the less compound antioxidant of consumption.Relative embodiment 5, the over-all properties of Comparative Examples 5 products descends to some extent.
Comparative Examples 6 has reduced the consumption of PTFE, and due to the one-tenth charcoal effect that has lacked PTFE, the flame retardant resistance of product descends.Relative embodiment 6,1 grade of flame retardant properties decline of Comparative Examples 6 products.
Comparative Examples 7 is used alone fire retardant RDP, and owing to lacking the compound synergic effect, flame retardant effect descends.Relative embodiment 7, the flame retardant properties of Comparative Examples 7 products has to a certain degree decline.
Comparative Examples 8 significantly reduces the thermo-stabilizer consumption, causes CPE to decompose aggravation.Relative embodiment 8, mechanical property and the weather resistance of Comparative Examples 8 products decline to a great extent.
Comparative Examples 9 is lowered the compatilizer consumption, causes two-phase consistency variation.Relative embodiment 9, the comprehensive mechanical property of Comparative Examples 9 products descends.
Comparative Examples 10 adopts ABS to substitute ACS, because the ABS weathering resistance is relatively poor, directly causes the weathering resistance of alloy product to decline to a great extent.Relative embodiment 10, the weather resistance of Comparative Examples 10 products declines to a great extent.

Claims (5)

1. halogen-free flameproof ACS/PC alloy is characterized in that comprising the following weight component:
Wherein said ACS resin is the terpolymer that vinyl cyanide, chlorinatedpolyethylene and vinylbenzene adopt mass polymerization to prepare, and in the ACS resin, the weight-average molecular weight of SAN phase is 18000-24000g/mol, and the weight content of chlorinated polyethylene rubber is 20~30%;
Described PC resin is bisphenol A-type PC resin, and weight-average molecular weight is 18000-25000g/mol, and second-order transition temperature is 125-140 ℃;
Described phosphorus flame retardant is the compound of triphenylphosphate TPP and two (diphenyl phosphate) RDP of Resorcinol, and the weight ratio of RDP and TPP is 3:1~1:1;
Described thermo-stabilizer is selected from least a in rare earth calcium zinc composite thermal stabilizer and Ca-Zn composite heat stabilizer;
Described compatilizer is selected from least a in styrene-maleic anhydride copolymer SMA and maleic anhydride graft acrylonitrile-chloride polyethylene-styrene copolymer ACS-g-MAH;
The particle diameter of described polytetrafluoroethylene PTFE is the 100-200 order;
Described lubricant is pentaerythritol ester PETS;
Described oxidation inhibitor is 1076/626 compound, and 1076 and 626 weight ratio is 4:1~1:1.
2. a kind of halogen-free flameproof ACS/PC alloy according to claim 1, is characterized in that described thermo-stabilizer is the rare earth calcium zinc composite thermal stabilizer.
3. a kind of halogen-free flameproof ACS/PC alloy according to claim 1 and 2, is characterized in that described compatilizer is maleic anhydride graft acrylonitrile-chloride polyethylene-styrene copolymer ACS-g-MAH, and wherein the weight content of maleic anhydride is 2-8%.
4. the preparation method of halogen-free flameproof ACS/PC alloy as claimed in claim 1, is characterized in that comprising the steps:
1), ACS resin 75~85 ℃ of dryings in advance, the PC resin is controlled both moisture contents all below 0.02% in advance 110~130 ℃ of dryings;
2), take ACS resin, PC resin, tetrafluoroethylene, thermo-stabilizer, compatilizer, lubricant and oxidation inhibitor by formula, deliver to extruding pelletization in parallel dual-screw extruding machine after fully mixing, it is reinforced that the while phosphorus flame retardant takes side to feed, the length-to-diameter ratio of parallel dual-screw extruding machine is 32-36, screw speed is 150-300rpm, temperature is 160-230 ℃, residence time 1-2 minute;
3), after material extrudes from twin screw extruder, through tie rod, cooling, pelletizing, obtain at last finished product.
5. the preparation method of halogen-free flameproof ACS/PC alloy according to claim 4, the length-to-diameter ratio that it is characterized in that described twin screw extruder is 32, and the feeding section temperature is 160-180 ℃, and the melt zone temperature is 200-210 ℃, the homogenizing zone temperature is 220-230 ℃, and head temperature is 220-225 ℃.
CN2012101795933A 2012-05-30 2012-05-30 Halogen-free and flame retardant ACS (Acrylonitrile-Chlorinated polyethylene-Styrene)/PC (Poly Carbonate) alloy Active CN102702660B (en)

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CN104072970B (en) * 2014-07-15 2015-10-07 宁波浙铁大风化工有限公司 A kind of high-temp resistant fire-retarding PC alloy material and preparation method thereof
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Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0893476A1 (en) * 1997-07-23 1999-01-27 Daicel Chemical Industries, Ltd. Thermoplastic resin composition
CN1587290A (en) * 2004-07-09 2005-03-02 浙江大学 Process for preparing acrylonitrile-chlorinated polyethylene styrene resin copolymer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0893476A1 (en) * 1997-07-23 1999-01-27 Daicel Chemical Industries, Ltd. Thermoplastic resin composition
CN1587290A (en) * 2004-07-09 2005-03-02 浙江大学 Process for preparing acrylonitrile-chlorinated polyethylene styrene resin copolymer

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