Elastomer-containing polycarbonate-based blending material and method for making same

A polycarbonate and elastomer technology, which is applied in the field of polycarbonate-based blend materials containing elastomers and their preparation, can solve the problems of low impact performance, easy stress cracking of products, low mechanical properties, etc., and achieves low temperature resistance. The effect of improved performance

Inactive Publication Date: 2008-02-06
SHANGHAI CHLOR ALKALI CHEM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In general, PC has excellent performance, but it has the disadvantages of high melting point, poor processing performance, easy stress cracking of products, sensitivity to notch, high price, and low boiling water aging resistance.
PC / ABS alloy solves some of the above-mentioned shortcomings of PC, but PC / ABS also has the disadvantages of poor aging resistance, especially low impact performance after boiling water aging
PC / PE alloy has good boiling water aging resistance, but the mechanical properties of PC / PE are lower than those of PC and PC / ABS. At the same time, PC and PE are two polymers with poor compatibility, and the products are easy to delaminate.
[0005] The applicant's previous Chinese patent ZL.02137524.0 discloses a polycarbonate-based blended material. Although it can overcome the above-mentioned defects, its low temperature resistance is not ideal, and it is easy to crack at low temperatures, and needs to be improved.

Method used

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  • Elastomer-containing polycarbonate-based blending material and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] formula:

[0040] 85 parts of polycarbonate (PC), 10 parts of polyethylene (PE), 10 parts of acrylonitrile-butadiene-styrene copolymer (ABS), 1 part of vinyl acetate, and 10 parts of polyurethane.

[0041]Polycarbonate (Makrolon 2858, produced by BAYER, Germany), low-density polyethylene (LDPE) (Q200, produced by Shanghai Petrochemical), and acrylonitrile-butadiene-styrene copolymer (ABS) (ABS757, produced by Chimei, Taiwan) Mix evenly with polyurethane powder, then pour the mixture into a twin-screw extruder (SHL-35 type) for melting and kneading, cool and granulate to obtain blended pellets (the temperature settings of each section of the extruder are respectively, one section : 220°C, second stage: 225°C, third stage: 235°C, fourth stage: 260°C, die head: 235°C). The blended pellets were dried in a common oven at 100°C for 10 hours and then cooled to room temperature naturally. Then according to the ASTM test standard, the blended pellets were injected, and the tem...

Embodiment 2

[0044] formula:

[0045] 50 parts of polycarbonate (PC), 15 parts of polyethylene (PE), 15 parts of acrylonitrile-butadiene-styrene copolymer (ABS), 5 parts of vinyl acetate, 5 parts of EPDM rubber, Malay Anhydride modified polyethylene 10 parts.

[0046] Polycarbonate (Makrolon 2858, produced by BAYER, Germany), low-density polyethylene (LDPE) (Q200, produced by Shanghai Petrochemical), and acrylonitrile-butadiene-styrene copolymer (ABS) (ABS757, produced by Chimei, Taiwan) Mix evenly with EPDM powder, then pour the mixture into a twin-screw extruder (SHL-35 type) for melting and kneading, cool and granulate to obtain blended pellets (the temperature setting of each section of the extruder Respectively, first stage: 220°C, second stage: 225°C, third stage: 235°C, fourth stage: 260°C, die head: 235°C). The blended pellets were dried in a common oven at 100°C for 10 hours and then cooled to room temperature naturally. Then according to the ASTM test standard, the blended pel...

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Abstract

The present invention provides a blending material which contains an elastomer and is based on polycarbonate and the manufacturing method thereof, the contents of the components and parts by weight are as follows: 30-85 shares of polycarbonate, 5-50 shares of polyethylene, 5-65 shares of acrylonitrile-butadiene-cinnamene copolymer, 1 to 5 shares of vinyl acetate, 5 to 10 shares of elastomer, and the elastomer is selected from ethylene propylene terpolymer or polyurethane. The present invention uses three polymers of PC / PE / ABS as a base material with the elastomer and the vinyl acetate being added, the obtained material keeps the PC, PC / ABS alloy material improves resistance to low temperature greatly and is not easy to be cracked in low temperature condition in addition to good performances such as mechanical performance, dimension stability and heat resistance. The present invention can be used in fields such as electron electric industry, automobile manufactory and engineering industry, and is especially adapted for engineering plastic under moist and low temperature environment and hot water environment.

Description

technical field [0001] The invention relates to a polycarbonate / polyethylene / acrylonitrile-butadiene-styrene copolymer polymer alloy material and a preparation method thereof. Background technique [0002] Polycarbonate is an engineering plastic with excellent performance. It has excellent mechanical properties, dimensional stability and heat resistance. It is widely used in manufacturing, electronics industry, automobile industry and other fields. However, due to the high melting point of PC, poor processing fluidity, easy stress cracking of products, strong sensitivity to notches, poor boiling water aging resistance, and high price, its application is limited to a certain extent. In order to solve the above problems, researchers have successively developed a series of polymer alloy materials based on polycarbonate, such as polycarbonate (PC) / acrylonitrile-butadiene-styrene copolymer disclosed in US patent [USP5223573, USP6166133] (ABS), polycarbonate (PC) / polyethylene (PE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/10B29B9/12C08L23/06C08L53/02C08L23/16C08L75/04
Inventor 岳群陈江倪锐利施岳萍
Owner SHANGHAI CHLOR ALKALI CHEM
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