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A kind of polycarbonate composition and its preparation method and application

A technology for polycarbonate and composition, applied in the field of polycarbonate composition and its preparation, can solve the problems of decreased mechanical properties, low alloy surface hardness, poor scratch resistance and the like, and achieves reduction of internal stress, improvement of toughness, Solve the effect of high internal stress

Active Publication Date: 2021-11-12
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, there are three main ways to reduce stress: 1. Reduce the viscosity of polycarbonate, but it will lead to a significant drop in mechanical properties; 2. Reduce stress by adjusting molding parameters during the molding process; 3. Introduce ABS resin It is made into PC / ABS alloy, but the alloy has low surface hardness and poor scratch resistance

Method used

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Examples

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific examples and comparative examples. The following specific examples are all preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the following examples, especially not limited to The models of each component raw material used in the following specific examples.

[0032] The raw material sources used in the present invention are as follows:

[0033] Carboxylic acid-based ionomer A: The main chain is ethylene / methacrylic acid copolymer, the melt index is 0.7g / 10min, the test condition is 190°C, 2.16kg, and 78mol% of the carboxyl groups in the methacrylic acid unit are neutralized by sodium ions , commercially available.

[0034] Carboxylic acid-based ionomer B: the main chain is ethylene / methacrylic acid copolymer, the melt index is 4.5g / 10min, the test conditions are 190°C, 2.16kg, and 45mol% of the carboxyl groups in the methacryl...

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PUM

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Abstract

The invention discloses a polycarbonate composition, which comprises the following components in parts by weight: 35-25 parts of carboxylic acid ionomer; 80 parts of polycarbonate; 5 parts of styrene-maleic anhydride random copolymer -20 parts, the maleic anhydride content in the styrene-maleic anhydride random copolymer is 5-25wt%. By adding carboxylic acid-based ionomers, the technical problem of high internal stress of polycarbonate can be improved, and the toughness of the composition can be further improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polycarbonate composition and its preparation method and application. Background technique [0002] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Due to the special structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics. Polycarbonate is a synthetic material that began to be developed in the late 1950s. Polycarbonate resin has outstanding impact resistance, creep resistance, and dimensional stability. It is widely used in the fields of electronic appliances, rail transit, and aerospace. In recent years, the amount of polycarbonate resin has surpassed that of nylon, ranking first. [0003] Ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L35/06C08L23/08
CPCC08L69/00C08L2203/20C08L2205/03C08L35/06C08L23/0876
Inventor 王培涛黄险波叶南飚艾军伟岑茵丁超
Owner KINGFA SCI & TECH CO LTD