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Polyphenylene sulfide composition with low linear expansion coefficient and preparation method thereof

A technology of low linear expansion and polyphenylene sulfide, applied in the field of materials, can solve the problems of difficult to meet the requirements of parts assembly, large linear expansion coefficient, poor dimensional stability, etc., to achieve easy control, prevent thermal degradation, and prevent gas fumigation discoloration effect

Inactive Publication Date: 2020-11-03
GUANGDONG ALDEX NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyphenylene sulfide (PPS) is a new type of engineering plastic, which has the advantages of high mechanical strength, good dielectric properties, chemical solvent resistance, intrinsic flame retardancy and excellent high temperature stability, and is widely used in various industries However, polyphenylene sulfide materials have problems such as large linear expansion coefficient (CLTE), poor dimensional stability and low processing viscosity, especially when used in large parts in the automotive field, such as bumpers, instrument panels, door panels, etc., it is often difficult to meet the requirements Requirements for parts assembly

Method used

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  • Polyphenylene sulfide composition with low linear expansion coefficient and preparation method thereof
  • Polyphenylene sulfide composition with low linear expansion coefficient and preparation method thereof
  • Polyphenylene sulfide composition with low linear expansion coefficient and preparation method thereof

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Embodiment 1

[0069] This embodiment provides a polyphenylene sulfide composition with a low linear expansion coefficient, which is prepared from the following raw materials in parts by weight:

[0070]

[0071] The preparation method of the above-mentioned low linear expansion coefficient polyphenylene sulfide composition comprises the following steps:

[0072] (1) After drying the polyphenylene sulfide resin at a temperature of 110° C. for 4 hours, cool it, and copolymerize the cooled polyphenylene sulfide resin and the ethylene-maleic anhydride-glycidyl methacrylate compounds, 2,2'-(1,3-phenylene)-bisoxazoline, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1, 3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate are added to the mixer for mixing;

[0073] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixing;

[0074] (3) Add the mixed material of step (1) into the parallel twin-screw extruder throu...

Embodiment 2

[0077] This embodiment provides a polyphenylene sulfide composition with a low linear expansion coefficient, which is prepared from the following raw materials in parts by weight:

[0078]

[0079] The preparation method of the above-mentioned low linear expansion coefficient polyphenylene sulfide composition comprises the following steps:

[0080] (1) After drying the polyphenylene sulfide resin at a temperature of 80°C for 8 hours, cooling, and copolymerizing the cooled polyphenylene sulfide resin and the ethylene-maleic anhydride-glycidyl methacrylate compounds, 2,2'-(1,3-phenylene)-bisoxazoline, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1, 3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate are added to the mixer for mixing;

[0081] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixing;

[0082] (3) Add the mixed material of step (1) into the parallel twin-screw extruder throug...

Embodiment 3

[0085]This embodiment provides a polyphenylene sulfide composition with a low linear expansion coefficient, which is prepared from the following raw materials in parts by weight:

[0086]

[0087] The preparation method of the above-mentioned low linear expansion coefficient polyphenylene sulfide composition comprises the following steps:

[0088] (1) After drying the polyphenylene sulfide resin at a temperature of 100°C for 4 hours, cooling, and copolymerizing the cooled polyphenylene sulfide resin and the ethylene-maleic anhydride-glycidyl methacrylate compounds, 2,2'-(1,3-phenylene)-bisoxazoline, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1, 3-phthalamide and bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate are added to the mixer for mixing;

[0089] (2) adding the mica powder, calcium sulfate whiskers and titanate coupling agent into another mixer and mixing;

[0090] (3) Add the mixed material of step (1) into the parallel twin-screw extruder throug...

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Abstract

The invention relates to a polyphenylene sulfide composition and a preparation method thereof, wherein the polyphenylene sulfide composition is prepared from the following raw materials: polyphenylenesulfide resin, mica powder, flat glass fiber, calcium sulfate whisker, titanate coupling agent, ethylene maleic anhydride glycidyl methacrylate copolymer, 2,2'-(1,3-phenylene)dioxazoline, N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1,3-phthalamide, and bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphate. The polyphenylene sulfide composition has excellent mechanical properties and processability as well as low linear expansion coefficient and low warpage, and can be applied to the fields of automobiles, aviation, electronics and electrics, household appliances and the like.

Description

technical field [0001] The invention relates to the field of materials, in particular to a low linear expansion coefficient polyphenylene sulfide composition and a preparation method thereof. Background technique [0002] The existing automobile industry requires the assembly gap between different material parts to be as small as possible and has high dimensional stability, which requires polymer materials to have low warpage and linear expansion coefficient. Polyphenylene sulfide (PPS) is a new type of engineering plastic, which has the advantages of high mechanical strength, good dielectric properties, chemical solvent resistance, intrinsic flame retardancy and excellent high temperature stability, and is widely used in various industries However, polyphenylene sulfide materials have problems such as large linear expansion coefficient (CLTE), poor dimensional stability and low processing viscosity, especially when used in large parts in the automotive field, such as bumper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08L23/08C08K13/06C08K9/10C08K3/34C08K7/08C08K7/14C08K5/523C08K5/3435C08K5/353
CPCC08L81/02C08L2201/08C08K2201/016
Inventor 王忠强卢健体洪剑城
Owner GUANGDONG ALDEX NEW MATERIAL CO LTD