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A low-melting point transparent hydrolysis-resistant modified PC material and its preparation method

A hydrolysis-resistant, low-melting-point technology, applied in the field of low-melting-point transparent hydrolysis-resistant modified PC materials and its preparation, can solve problems such as transparency, high temperature resistance and humidity resistance, unfavorable product molding, and limited application range, etc., to achieve improvement Hydrolysis resistance, improved lubricity, and high promotional value

Active Publication Date: 2022-04-15
上海聚威新材料股份有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The injection molding temperature of traditional PC materials is high, and severe tailing phenomenon will occur with matching parts during secondary injection molding, which is not conducive to product molding. This requires lowering the melting point of PC materials to lower the injection molding temperature and meet processing requirements, but After changing the melting point of PC, the transparency, high temperature resistance and humidity resistance of the material itself will be seriously affected, limiting its application range

Method used

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  • A low-melting point transparent hydrolysis-resistant modified PC material and its preparation method
  • A low-melting point transparent hydrolysis-resistant modified PC material and its preparation method
  • A low-melting point transparent hydrolysis-resistant modified PC material and its preparation method

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] Prepare the modified PC material as follows:

[0020] (1) Take polycarbonate resin, polystyrene copolymer, hydrolysis-resistant agent, antioxidant and light stabilizer in proportion, dry respectively afterwards, obtain dry raw material;

[0021] (2) Mix the dried raw materials in step (1) and add them to a twin-screw extruder with a screw diameter of 35mm and a length-to-diameter ratio of L / D=36. 230°C, 250°C, 300°C, 300°C, 300°C, 305°C, 290°C, the screw speed is contr...

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Abstract

The invention discloses a low-melting point transparent hydrolysis-resistant modified PC material and a preparation method thereof, which, in parts by weight, comprise: 80-100 parts of polycarbonate resin, 5-15 parts of polystyrene copolymer, and 1 part of hydrolysis-resistant agent. ~3 parts, antioxidant 0~0.3 part, light stabilizer 0~0.2 part; in the present invention, by adding hydrolysis-resistant agent, the overall lubricating performance of the material is improved, and the hydrolysis-resistant modified PC material with excellent performance is obtained at the same time, and by controlling The proportion of raw materials ensures the transparency and thermal decomposition resistance of the product, improves the quality of the material, and broadens the application range of the material.

Description

technical field [0001] The invention relates to the technical field of polymer material modification, in particular to a transparent hydrolysis-resistant modified PC material with a low melting point and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a general-purpose engineering plastic, which has excellent mechanical properties, electrical properties and heat resistance, especially known for its excellent impact strength and creep resistance, high light transmittance, low water absorption, product size It has become the general-purpose engineering plastic with the fastest growth rate of production and application among the five major engineering plastics. [0003] Due to the wide application of PC materials, the specific requirements of different products are different, and it is necessary to improve the performance on the basis of the original material performance to meet the use requirements. The injection molding temperature of tradit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L25/08C08L91/00C08K5/526C08K5/3475C08K5/29
CPCC08L69/00C08L2201/10C08L2201/08C08L2205/03C08L25/08C08L91/00C08K5/526C08K5/3475C08K5/29
Inventor 王晶张天荣王帅王凯王明义
Owner 上海聚威新材料股份有限公司
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