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Flame-retarding PC (polycarbonate)/ABS composition and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of flame-retardant polycarbonate/ABS composition and its preparation, can solve the problems of limited application and poor chemical resistance, and achieve improved solvent resistance, resistance Excellent chemical properties

Inactive Publication Date: 2012-05-30
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical resistance of PC / ABS is poor, which limits the application of PC / ABS alloys in certain environments

Method used

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  • Flame-retarding PC (polycarbonate)/ABS composition and preparation method thereof
  • Flame-retarding PC (polycarbonate)/ABS composition and preparation method thereof
  • Flame-retarding PC (polycarbonate)/ABS composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0033] A preparation method of flame retardant polycarbonate / ABS composition, the method comprises the following steps:

[0034] (1) Prepare materials, use the following raw materials: polycarbonate PC: molecular weight 20000-30000, L-1225Y produced by Teijin Chemical, Dow PC-201-15 or PC-201-10, Dow PC-201-15 is preferred ; ABS: produced by Kumho, South Korea; vinyl ionic compound: use DuPont's sarin resin 9520, Zn ion type; flame retardant: use bisphenol A type, BDP, produced in Great Lakes, USA. The content of each component is shown in Table 1.

[0035] (2) Put polycarbonate, ABS and vinyl ionic compound in a medium-speed mixer, control the stirring speed to 500-600rpm, and mix for 10-30min.

[0036] (3) The above-mentioned mixed raw materials are put into a twin-screw extruder, and the flame retardant enters from the side line of the twin-screw extruder, melted and extruded, and granulated to obtain the product.

[0037] The twin-screw extruder includes ten temperature ...

Embodiment 4

[0053] A preparation method of flame retardant polycarbonate / ABS composition, the method comprises the following steps:

[0054] (1) Prepare raw materials according to the following components and contents: 70kg polycarbonate, 15kg ABS, 4kg vinyl ionic compound, 20kg flame retardant. Wherein polycarbonate is benzene series polycarbonate, molecular weight is 20000; ABS molecular weight is 80000, and wherein butadiene content is 5% (wt%), acrylonitrile content is 25% (wt%), styrene content is 70% (wt%); Vinyl ionic compound is the compound with the good functional group of alkene acid and polycarbonate compatibility; Flame retardant is bisphenol A-bis (diphenyl phosphate), structural formula is as follows:

[0055]

[0056](2) Place polycarbonate, ABS and vinyl ionic compounds in a medium-speed mixer, control the stirring speed to 600rpm, and mix for 10min;

[0057] (3) The above-mentioned mixed raw materials are put into a twin-screw extruder, and the flame retardant enters...

Embodiment 5

[0060] A preparation method of flame retardant polycarbonate / ABS composition, the method comprises the following steps:

[0061] (1) Prepare raw materials according to the following components and contents: 90kg polycarbonate, 5kg ABS, 4kg vinyl ionic compound, 10kg flame retardant. Wherein polycarbonate is benzene polycarbonate, molecular weight is 30000; ABS molecular weight is 150000, and wherein butadiene content is 30% (wt%), and acrylonitrile content is 30% (wt%), and styrene content is 40% (wt%); Vinyl ion compound is commercially available sarin resin, and this sarin resin is ethylene-methacrylic acid ionomer resin, and its structural formula is as follows:

[0062]

[0063] where M + It is Li Zn ion, x is 6-9, y is 1, n is 400-800; the flame retardant is bisphenol A-bis(diphenyl phosphate), the structural formula is as follows:

[0064]

[0065] (2) Place polycarbonate, ABS and vinyl ionic compounds in a medium-speed mixer, control the stirring speed to 500rpm...

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Abstract

The invention relates to a flame-retarding PC (polycarbonate) / ABS combination and a preparation method thereof. The combination includes the following components (parts by weight of each component are shown in brackets): PC (70-90), ABS (5-20), a vinyl ionic compound (3-7) and a flame retardant (10-20). After raw materials are prepared, the PC, the ABS and the vinyl ionic compound are mixed in a medium-speed mixer; the mixed raw materials are put in a double-screw extruder, and the flame retardant enters from the side line of the double-screw extruder; the flame-retarding PC / ABS combination is obtained after the melting, extruding and granulating. Compared with the prior art, the invention has the characteristics that the PC / ABS combination is modified by the vinyl ionic compound so as tobe beneficial for improving the solvent resisting performance of the PC / ABS combination, thereby obtaining the combination with excellent chemical resisting performance.

Description

technical field [0001] The invention relates to a polymer composite material and a preparation method thereof, in particular to a flame-retardant polycarbonate / ABS composition 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 large, and stress cracking is prone to occur. 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. Therefore, PC / ABS is a plastic alloy with excellent pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L55/02C08L23/08C08L33/02C08K5/523B29B9/06B29C47/92B29C47/76B29C48/40B29C48/76B29C48/92
CPCB29C47/369B29C48/04B29C48/39B29C48/40
Inventor 杨春华辛敏琦李荣群李文强罗明华
Owner SHANGHAI KUMHO SUNNY PLASTICS