Flame-retardant PC (polycarbonate) /ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) alloy for screw hole cracking resistance experiment and preparation method thereof
A screw hole and experiment technology, applied in the field of alloy and its preparation, flame retardant PC/ABS alloy and its preparation, can solve the problems of high melting temperature, stress cracking, large residual stress, etc.
Inactive Publication Date: 2011-08-10
SHANGHAI KUMHO SUNNY PLASTICS
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Problems solved by technology
However, due to the high molecular rigidity and steric hindrance, the high melting temperature (270--320°C) is difficult to process, and it is difficult to produce large thin-walled products, and the residual stress in the product is relatively large, which is prone to stress cracking
At the same time, PC is sensitive to gaps. Although PC is stable to acidic and oily media, it is not resistant to alkali, which limits the practical application of PC.
Method used
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[0026] The technical solutions of the present invention will be further explained below in conjunction with the examples, but the following content is not intended to limit the protection scope of the present invention.
[0027] In the following examples of the present invention, the raw materials used are:
[0028] The selected PC is PC-300-15, manufactured by LG-Pow.
[0029] ABS is to use ABS P / D150, ABS P / D190 or ABS P / D130 of Korea Kumho Petrochemical Co., Ltd., preferably ABS P / D150 in the embodiment.
[0030] SAN is SAN320 from Korea Kumho Petrochemical Co., Ltd., and the AN content is 24%.
[0031] Styrene-imide-maleic anhydride-N-aminoethylpiperazine tetrapolymer, synthesized by Shanghai Kumho Sunny Plastic Co., Ltd., the synthesis method is to use the heat-resistant agent MSNI and N-aminoethyl Base piperazine co-extrusion reaction.
[0032] BDP adopts FP-700 from Changchun, Taiwan.
[0033] The preparation method adopted in the embodiment of the present invention...
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The invention discloses a flame-retardant PC (polycarbonate) / ABS (Acrylonitrile Butadiene StyreneAcrylonitrile Butadiene Styrene) alloy for a screw hole cracking resistance experiment and a preparation method thereof. The PC / ABS alloy is prepared from the following raw materials in part by weight: 68 to 80 parts of PC, 6 to 12 parts of ABS, 5 to 10 parts of SAN (Styrene Acrylonitrile), 0 to 6 parts of styrene-imide-maleic anhydride-N-aminoethyl piperazidine quadripolymer and 9 to 15 parts of BDP (beclometasone dipropionate). The preparation method of the PC / ABS alloy comprises the following steps of: mixing the PC, the ABS, the SAN and anhydride-N-aminoethyl piperazidine quadripolymer in an intermediate speed mixer; charging the mixed raw materials into a double-screw extruder; laterally feeding the BDP into the double-screw extruder; carrying out melting extrusion; and granulating to obtain the PC / ABS alloy. In the invention, the screw hole cracking performance of a product subjected to injection molding is improved by adding the styrene-imide-maleic anhydride-N-aminoethyl piperazidine quadripolymer serving as a reactive compatibilizer.
Description
technical field [0001] The invention relates to an alloy in the technical field of polymer materials and a preparation method thereof, in particular to a flame-retardant PC / ABS alloy resistant to screw hole cracking experiments and a preparation method thereof. Background technique [0002] PC is an amorphous engineering plastic with excellent impact strength, thermal stability, gloss, antibacterial properties, flame retardant properties and anti-pollution properties. However, due to its high molecular rigidity and steric hindrance, its high melting temperature (270--320°C) is difficult to process, and it is difficult to produce large thin-walled products, and the residual stress in the product is relatively large, which is prone to stress cracking. At the same time, PC is sensitive to gaps. Although PC is stable to acidic and oily media, it is not resistant to alkali, which limits the practical application of PC. ABS resin has good processability and mechanical properties....
Claims
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Login to View More IPC IPC(8): C08L69/00C08L55/02C08L25/12C08L35/06C08K5/5313B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 杨春华尚晓艳胡沁李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS