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High-transparency low-temperature-impact-resistant flame-retardant polycarbonate composite material and preparation method thereof

A technology of flame-retardant polycarbonate and composite materials, which is applied in the field of high-transparency, low-temperature impact-resistant, flame-retardant polycarbonate composite materials and its preparation, and can solve the impact of not mentioning low-temperature impact resistance of resins, market expansion restrictions, and prices. Expensive and other problems, to achieve the effect of short processing and molding cycle, excellent flame retardant performance, and low processing temperature

Active Publication Date: 2014-05-14
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Yao Fu and others disclosed a transparent flame-retardant polycarbonate material containing two different specifications of polycarbonate, a perfluorocarbon potassium salt flame retardant and a release agent in patent CN101704994B, but he did not mention these additions Effect of substances on low temperature impact resistance of resin
[0008] At present, there are not many products that have low temperature impact resistance and can reach the UL94V-0 flame retardant level, while maintaining the transparency of PC resin, and the price is expensive, and the market expansion is limited to a certain extent.

Method used

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  • High-transparency low-temperature-impact-resistant flame-retardant polycarbonate composite material and preparation method thereof
  • High-transparency low-temperature-impact-resistant flame-retardant polycarbonate composite material and preparation method thereof
  • High-transparency low-temperature-impact-resistant flame-retardant polycarbonate composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] The following components in parts by weight (1 part = 100g): 850 parts of PC type 2805, 100 parts of silicone copolymerized PC, 35 parts of polybromocarbonate, 3 parts of antioxidant 168, 2 parts of antioxidant Agent 1076, 6 parts of pentaerythritol stearate, 1.5 parts of light stabilizer 770, 1.5 parts of ultraviolet absorber UV-234 and 1 part of toner are mixed in a high mixer for 2 to 3 minutes, and then twin-screw at 260 to 280 ° C Extrusion and granulation, the resulting pellets are dried at 120°C for 4 hours and then injection molded into standard strips at 260-280°C.

Embodiment 2

[0040] The following components in parts by weight (1 part = 100g): 830 parts of PC of model 2805, 100 parts of silicone copolymerized PC, 20 parts of silicone toughening agent of model S2001, 35 parts of polybromocarbonic acid Ester, 3 parts of antioxidant 168, 2 parts of antioxidant 1076, 6 parts of pentaerythritol stearate, 1.5 parts of light stabilized 770, 1.5 parts of ultraviolet absorber UV-234 and 1 part of toner are mixed in a high mixer for 2 ~3 minutes, then twin-screw extrusion pelletization at 255~275°C, the obtained pellets are dried at 120°C for 4 hours, and then injection molded into standard strips at 255~275°C.

Embodiment 3

[0042] The following components in parts by weight (1 part = 100g): 780 parts of PC type 2805, 150 parts of silicone copolymerized PC, 30 parts of MBS, 25 parts of decabromodiphenylethane, 3 parts of antioxidant 168 , 2 parts of antioxidant 1076, 6 parts of pentaerythritol stearate, 1.5 parts of light stabilized 770, 1.5 parts of ultraviolet absorber UV-234 and 1 part of toner are mixed in a high mixer for 2 to 3 minutes, and then mixed at 255 to Twin-screw extrusion granulation at 275°C, the resulting pellets were dried at 120°C for 4 hours and then injection molded into standard strips at 255-275°C.

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Abstract

The invention discloses a high-transparency low-temperature-impact-resistant flame-retardant polycarbonate composite material and a preparation method thereof. The composite material comprises following components by weight: 700-850 parts of polycarbonate resin, 100-250 parts of organosilicone co-polymer PC, 0-30 parts of a low-temperature-impact modifying agent and 10-14 parts of a flame retardant. The low-temperature-impact modifying agent is one of an organosilicone type flexibilizer and an acrylate type flexibilizer or a mixture of the organosilicone type flexibilizer and the acrylate type flexibilizer. The flame retardant is one of or a mixture of several compounds selected from decabromodiphenylethane, poly(bromocarbonate), potassium perfluorobutane sulfonate or diphenylsulfonesulfonate. The organosilicone co-polymer PC is polycarbonate resin obtained by copolymerization of bisphenol A and organosilicone and has a relative molecular weight of 20000-30000. The preparation method of the composite material is also provided. According to the composite material and the preparation method, the low-temperature-impact-resistant performance of the PC resin is largely enhanced, and the composite material has excellent flame retardance and can preserve the high transparency of the material itself. In addition, the material has advantages of easy mold filling, low processing temperature, short processing and forming period, and the like.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a high-transparency low-temperature impact-resistant flame-retardant polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a thermoplastic engineering plastic with superior comprehensive properties, with excellent impact resistance, electrical properties, high transparency, creep resistance, dimensional stability and other advantages. It is widely used in the fields of automobile industry, instrumentation, media data disc, electric lighting and so on. [0003] Polycarbonate resin has a certain flame retardancy, and the flame retardancy level is only UL94V-2, which cannot meet the requirements for high or very high flame retardancy. At present, flame retardants are added to polycarbonate to improve the material There have been many studies on flame retardant grades, but the addition of most types of flame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/00C08K5/03C08K5/00C08K5/42
Inventor 赵志刚程方清朱爱华夏永明
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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