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A kind of modified polycarbonate with good low temperature toughness and preparation method thereof

A polycarbonate and modified technology, applied in the field of modified polycarbonate and its preparation, can solve the problems of not fully meeting the comprehensive performance requirements, notch sensitivity, stress concentration cracking, low temperature impact toughness, etc. Improvement of notch sensitivity and stress cracking, the effect of improving stress cracking and notch sensitivity and simple process

Active Publication Date: 2016-04-20
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polycarbonate (PC) is an engineering plastic with excellent comprehensive properties. Because of its excellent weather resistance, high impact resistance, and good electrical insulation, it is widely used in the fields of electronics, automobiles, and machinery industries. However, However, unmodified PC raw materials are still not satisfactory in terms of notch sensitivity, stress concentration cracking and low temperature impact toughness, and cannot fully meet the comprehensive performance requirements of various industries for materials.

Method used

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  • A kind of modified polycarbonate with good low temperature toughness and preparation method thereof
  • A kind of modified polycarbonate with good low temperature toughness and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Mix 98 parts of PCIR2200, 1 part of MBSE2620, 0.3 part of light and heat stabilizer (antioxidant 1076:antioxidant 168=1:2 (mass ratio)) and 0.1 part of EBS by high-speed stirring;

[0040] (2) Send the above mixture into the extruder, under the conveying and shearing action of the screw, fully melt and compound, then extrude through the machine head, draw, cool, pelletize, and finally pack to obtain the finished product. The screw temperature of each section of the twin-screw extruder is controlled between 260-280°C, and the screw speed is 400 rpm.

Embodiment 2

[0042] (1) Mix 95 parts of PCIR2200, 3 parts of MBSE2620, 0.6 part of light and heat stabilizer (antioxidant 1076:antioxidant 168=1:2 (mass ratio)), 0.2 part of EBS and 0.3 part of solid paraffin by high-speed stirring Uniform;

[0043] (2) Send the above mixture into the extruder, under the conveying and shearing action of the screw, fully melt and compound, then extrude through the machine head, draw, cool, pelletize, and finally pack to obtain the finished product. The screw temperature of each section of the twin-screw extruder is controlled between 260-280°C, and the screw speed is 400 rpm.

Embodiment 3

[0045] (1) Mix 90 parts of PCIR2200, 10 parts of ABS8434, 0.9 part of light and heat stabilizer (antioxidant 1076:antioxidant 168=1:2 (mass ratio)) and 1.0 part of EBS by high-speed stirring;

[0046] (2) Send the above mixture into the extruder, under the conveying and shearing action of the screw, fully melt and compound, then extrude through the machine head, draw, cool, pelletize, and finally pack to obtain the finished product. The screw temperature of each section of the twin-screw extruder is controlled between 260-280°C, and the screw speed is 400 rpm.

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Abstract

The invention relates to the technical field of polycarbonate modified technology, and relates to a modified polycarbonate and a preparation method of the modified polycarbonate. The modified polycarbonate comprises, by weight, 90-98 parts of polycarbonate, 1-10 parts of flexibilizer, 0.1-1 part of thermal stabilizer, and 0.1-1 part of processing agent. Compared with polycarbonate (PC) raw materials, the modified polycarbonate and the preparation method of the modified polycarbonate obtain a low-temperature PC resin with good toughness, almost impose no influence on other chemical functions of materials, and have the advantages of being high in impact intensity, good in machine shaping and the like, good in comprehensive performance of the PC materials, capable of improving the situation of sensitive gaps and stress cracking, being used for injection molding of various appliance shells and other automobile inner decorations and the like. Besides, the low-temperature good toughness modified polycarbonate and the preparation method of the modified polycarbonate has the advantages of being simple and continuous in process, high in production efficiency and stable in production quality through a dual-screw extrusion technique.

Description

technical field [0001] The invention relates to the technical field of polycarbonate modification, and relates to a modified polycarbonate and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent comprehensive properties. Because of its excellent weather resistance, high impact resistance, and good electrical insulation, it is widely used in the fields of electronics, automobiles, and machinery industries. However, However, unmodified PC raw materials are still not satisfactory in terms of notch sensitivity, stress concentration cracking and low temperature impact toughness, and cannot fully meet the comprehensive performance requirements of various industries for materials. Contents of the invention [0003] The present invention provides a modified polycarbonate with good low-temperature toughness and a preparation method thereof in order to solve the above-mentioned problems in the prior art. [0004] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L51/00C08L55/02C08L23/06C08L53/02C08L23/08C08L83/04C08K5/01C08K5/098C08K3/30B29C47/92B29C48/92
Inventor 杨莺孙利明李术
Owner HEFEI GENIUS NEW MATERIALS
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