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Polycarbonate composition and its application

A polycarbonate and composition technology, applied in the field of polycarbonate composite materials, can solve problems such as poor toughness, and achieve the effects of high impact strength, good weather resistance and mechanical properties

Active Publication Date: 2013-12-25
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Acrylonitrile-styrene copolymer (AS) resin has good fluidity, good weather resistance, good processing stability, but poor toughness, especially in low temperature environment
The existing disclosed technology does not relate to polycarbonate compositions with good low-smoke flame retardancy, weather resistance and low-temperature toughness

Method used

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  • Polycarbonate composition and its application
  • Polycarbonate composition and its application
  • Polycarbonate composition and its application

Examples

Experimental program
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Embodiment 1-8

[0064] Add the dried polycarbonate resin, styrene-acrylonitrile copolymer, toughening agent, polysiloxanes and phosphoric acid esters into the twin-screw extruder according to the ratio in Table 1 (the diameter of the screw is 35mm , aspect ratio L / D=36). Among them, the temperature of each screw barrel of the twin-screw extruder (from the feeding port to the machine head) is: 140°C, 240°C, 250°C, 250°C, 240°C, 240°C, the screw speed is 300 rpm, and the feeding amount 50kg / h. The product obtained above is dried in an oven at 100° C. for 3-4 hours and then injected into a standard sample strip at a temperature of 250° C. The injection-molded standard strips were placed at 25°C and 50% relative humidity for 24 hours before testing performance, and the results are listed in Table 1.

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Abstract

The invention discloses a polycarbonate composition and its application. The polycarbonate composition comprises, by weight, 40-80 parts of polycarbonate, 5-30 parts of a styrene-acrylonitrile copolymer, 1-10 parts of a flexibilizer, 1-10 parts of a polysiloxane substance, 3-20 parts of organic phosphate, 0-1 part of optional polytetrafluoroethylene and 0-4 parts of optional other additives. The polycarbonate composition prepared in the invention has a smoke density of below 60SDR, a large ISO impact strength in low temperature environment, has a flame retardation level of UL94V-0(1.6mm), good weather ability and good mechanical properties, can satisfy extrusion and injection molding, and is suitable for automobile interior decorative parts, electric appliance shells and the like.

Description

technical field [0001] The invention relates to the technical field of polycarbonate composite materials, in particular to a polycarbonate composition with low-smoke flame retardancy, good weather resistance and low-temperature toughness and its application. Background technique [0002] Polycarbonate (Polycarbonate, PC) has excellent comprehensive properties, such as high impact strength, good light transmittance, good heat resistance, etc., but due to its poor fluidity, large internal stress of the molded product, solvent resistance and notch sensitivity, etc. However, its use is limited, so it is usually alloyed with other resins to make up for its own shortcomings. Acrylonitrile-styrene copolymer (AS) resin has good fluidity, good weather resistance, good processing stability, but poor toughness, especially poor toughness in low temperature environment. The existing disclosed technology does not relate to polycarbonate compositions with good low-smoke flame retardancy, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L25/12C08L83/04C08L27/18C08L23/08C08K5/523
Inventor 刘晓亮孙东海陈大华刘贤文佟伟何继辉
Owner KINGFA SCI & TECH CO LTD
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