Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor

A polycarbonate resin and polycarbonate technology, which is applied in the field of polymer material processing, can solve the problems that PC/ABS resin composition is difficult to achieve balance of impact, rigidity, thermal and mechanical properties, and poor heat resistance of alloys. , to achieve the effect of improving the mold expansion phenomenon, improving the interface properties, and reducing the size of the domains

Inactive Publication Date: 2015-09-23
SHANGHAI KUMHO SUNNY PLASTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such as the Chinese invention patent whose patent publication number is CN1580126A, by using ABS / PP grafted maleic anhydride as the compatibilizer of PC / ABS to prepare PC / ABS alloy, the heat resistance of the gained alloy is not good
It can be seen that the PC / ABS resin composition prepared by the prior art is difficult to achieve a balance of impact, rigidity, and heat resistance in terms of mechanical properties

Method used

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  • Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor
  • Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor
  • Polycarbonate resin composition with nano-scale dispersed phase state and preparation method therefor

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Embodiment 1～5 and comparative example 1～3

[0026] The raw materials used are:

[0027] BPAPC, the weight average molecular weight is 35,000;

[0028] SAN, the weight-average molecular weight is 120,000, and the weight percentage of acrylonitrile is 24%;

[0029] ABS, the average particle size of the particles is 300nm, the weight percentage of butadiene is 50%, and the weight percentage of acrylonitrile is 12%;

[0030] MBS, the average particle size of the particles is 250nm, and the weight percentage of butadiene is 60%;

[0031] TMPC, weight average molecular weight 45,000;

[0032] TMPC-PMMA1, weight average molecular weight 108,000, TMPCwt% = 74%;

[0033] TMPC-PMMA2, weight average molecular weight 108,000, TMPCwt%=41%;

[0034] TMPC-DMPC1, weight average molecular weight 28,000, TMPCwt% = 83%.

[0035] TMPC-DMPC2, weight average molecular weight 28,000, TMPCwt%=50%.

[0036] Take each component according to the parts by weight shown in Table 1, then adopt the following method to prepare the polycarbonate r...

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Abstract

The invention provides a polycarbonate resin composition with a nano-scale dispersed phase state and a preparation method therefor. The composition contains the following ingredients in parts by weight: (a) 50-70 parts of bisphenol A polycarbonate (BPAPC) resin, (b) 20-50 parts of styrene-acrylonitrile (SAN) copolymer, (c) 0-10 parts of toughening agent and (d) 1-10 parts of compatibilizer. The polycarbonate resin composition is prepared through premixing BPAPC, SAN, the toughening agent and the compatibilizer in a medium-speed mixer, and then, feeding the premix to a twin-screw extruder for melt extrusion and granulation. Compared with the prior art, the polycarbonate resin composition with the nano-scale dispersed phase state and the preparation method therefor have the following technical characteristics that the phenomenon of die swelling during the extrusion of PC and SAN is avoided; in a microscopic phase state, SAN is uniformly dispersed in the PC matrix in a nano-scale manner; and the macroscopic mechanical properties of the resin composition are greatly improved.

Description

technical field [0001] The invention relates to a thermoplastic resin composition and a preparation method thereof, belonging to the technical field of polymer material processing. Background technique [0002] Polymer heterogeneous blending systems generally have the advantages of performance optimization and cost reduction, and are more and more commercially valued, and are widely used in automobiles, home appliances, electronics and other fields. PC / ABS resin composition belongs to this kind of very important heterogeneous system. [0003] As we all know, for polymer blends, a small and uniform dispersed phase is usually conducive to the improvement of performance, and the nanoscale dispersed phase structure usually brings many unexpected excellent properties due to the nano effect. For the PC / ABS system, where the interaction energy between PC and the matrix component SAN of ABS is positive, PC and SAN are incompatible, and SAN is usually dispersed in the PC matrix with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L25/12C08L55/02B29C47/40
CPCC08L69/00B29C48/40C08L2205/025C08L2205/035C08L2205/08C08L25/12C08L55/02
Inventor 单桂芳周霆罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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