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Anti-cracking polyphenyl thioether composite material and preparation method thereof

A technology of polyphenylene sulfide and composite materials, which is applied in the field of polyphenylene sulfide composite materials and its preparation, can solve problems such as easy cracking at thin-walled joints, and achieve improved crack resistance toughness, easy injection molding, and melt fluidity Good results

Active Publication Date: 2011-02-09
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to obtain a kind of toughening system through special toughening system and composite technology, which can not only solve the problem of easy cracking of the thin-walled joints of porous connector parts, but also meet the high flow performance required by the injection molding process of porous connectors. Composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The following components by weight percentage are used in this embodiment: 58.3% polyphenylene sulfide resin, 35% alkali-free fiber, 5% random ethylene-acrylate-maleic anhydride terpolymer, 0.6% silane coupling agent, Silicone powder 0.4%, β-(3,5-di-tert-butyl-4-hydroxyphenyl) octadecyl propionate 0.7%.

[0021] Add the phenylene sulfide resin, toughening agent and coupling agent to the batching mixer first, stir at low speed for 1 minute, then add lubricant and antioxidant to the batching mixer, and mix at high speed for 1-2 minutes; mix the premixed The material is placed in twin-screws and granulated by melt extrusion. The extrusion process is as follows: twin-screw machine temperature zone: first-stage temperature 275°C, second-stage temperature 285°C, third-stage temperature 285°C, fourth-stage temperature 290°C, fifth-stage temperature Temperature 295°C, head temperature 300°C; host frequency: 35Hz; feeding frequency: 11Hz; add glass fiber from the side feeding po...

Embodiment 2

[0024] In this embodiment, the following components by weight percentage are used: 53.4% ​​polyphenylene sulfide resin, 40% medium alkali fiber, 4% random ethylene-acrylic acid ester-maleic anhydride terpolymer, 1.2% phosphoric acid ester coupling agent 1.0% silicone mesh granules, 0.4% tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester.

[0025] Add the phenylene sulfide resin, toughening agent and coupling agent to the batching mixer first, stir at low speed for 1 minute, then add lubricant and antioxidant to the batching mixer, and mix at high speed for 1-2 minutes; mix the premixed The material is placed in a twin-screw and granulated by melt extrusion. The extrusion process is as follows: twin-screw machine temperature zone: first-stage temperature 280°C, second-stage temperature 290°C, third-stage temperature 290°C, fourth-stage temperature 295°C, fifth-stage temperature Temperature 300°C, head temperature 310°C; host frequency: 35Hz; feedin...

Embodiment 3

[0028] In this embodiment, the following components by weight percentage are used: polyphenylene sulfide resin 60.0%, high silica fiber 35%, powder rubber organic ultrafine particles 3%, borate coupling agent 1.0%, modified ethylene bismuth Fatty acid amide 0.5%, N,N'-1,6-hexylidene-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide 0.5%.

[0029] Add the phenylene sulfide resin, toughening agent and coupling agent to the batching mixer first, stir at low speed for 1 minute, then add lubricant and antioxidant to the batching mixer, and mix at high speed for 1-2 minutes; mix the premixed The material is placed in twin-screws and granulated by melt extrusion. The extrusion process is as follows: twin-screw machine temperature zone: first-stage temperature 275°C, second-stage temperature 285°C, third-stage temperature 285°C, fourth-stage temperature 290°C, fifth-stage temperature Temperature 295°C, head temperature 300°C; host frequency: 35Hz; feeding frequency: 11Hz; add glas...

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Abstract

The invention provides an anti-cracking polyphenyl thioether composite material comprising the following components in percentage by weight: 50-70 percent of polyphenylene sulfide, 25-45 percent of fibre glass, 3-7 percent of toughener, 0.3-1.5 percent of coupling agent, 0.2-1.0 percent of lubricant and 0.2-1 percent of antioxidant. The invention also provides a preparation method of the composite material. The invention has the advantages that by a specific toughening system and a composite technology, the invention better maintains the mechanical property of the polyphenyl thioether composite material and greatly increases the anti-cracking toughness of the composite material at the same time, and otherwise, the anti-cracking polyphenyl thioether composite material has good melt liquidity and is easy to inject and mold.

Description

technical field [0001] The invention relates to a polyphenylene sulfide composite material and a preparation method thereof, in particular to a polyphenylene sulfide composite material which can be used for anti-cracking and a preparation method thereof, which can solve the problem of easy cracking at the thin-wall joints of porous connector parts question. Background technique [0002] Polyphenylene sulfide (PPS) has been widely used due to its high temperature resistance, corrosion resistance, high strength, high insulation and flame retardancy, and is the most industrialized material among high-performance engineering plastics. A large number of benzene rings on the main chain of PPS increase its rigidity, but its impact toughness is not high; and the glass transition temperature of the amorphous phase is low (Tg = 85 ° C), so that its application is limited, usually It is compounded with fiber to obtain higher strength and high temperature stability. PPS composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/00C08L51/06C08L81/02C08L23/08C08K7/14C08L21/00C08K13/04B29C47/92B29C48/92
CPCB29C48/04
Inventor 余雪江刘涛芦艾王宪忠孙素明朱敬芝
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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