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Polyphenylene sulfide resin composition and molded article

A technology of polyphenylene sulfide resin and composition, applied in the field of polyphenylene sulfide resin composition, can solve problems such as inability to maintain size, and achieve the effects of excellent mechanical properties and dimensional stability, anisotropy suppression, and swelling suppression.

Active Publication Date: 2021-10-26
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although PPS resin has low water absorption, it also has the disadvantage of not being able to maintain the original size because it expands in a humid and hot environment.

Method used

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  • Polyphenylene sulfide resin composition and molded article
  • Polyphenylene sulfide resin composition and molded article
  • Polyphenylene sulfide resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0180] Using a twin-screw extruder (TEM-26 manufactured by Toshiba Machine Co., Ltd.) with a 26 mm diameter intermediate addition port with the barrel temperature set to 320° C. and the screw speed set to 400 rpm, compared to that in the reference example 100 parts by weight of the obtained PPS resin (A), non-fibrous inorganic filler (C) and / or other resins (D) are added from the raw material supply port with the weight ratio shown in Table 1 to form a molten state, and (B) Glass fibers with irregular cross-sections and / or (B′) fibrous fillers were supplied from an intermediate addition port at a weight ratio shown in Table 1, and were melt-kneaded at a discharge rate of 30 kg / hour to obtain pellets. The above-mentioned properties were evaluated using the pellets. The results are shown in Table 1 together.

[0181] From the results of Examples 1 to 7, it can be seen that the PPS resin composition of the present invention has low linear expansion, low anisotropy, and low swell...

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PUM

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Abstract

To provide a polyphenylene sulfide resin composition and a molded article thereof having excellent mechanical properties and dimensional stability, and particularly having significantly inhibited anisotropy and inhibited expansion during a moist heat treatment. This polyphenylene sulfide resin composition is a mixture of (A) 100 parts by weight of a polyphenylene sulfide resin, (B) 100-250 parts by weight of atypical cross-section glass fibers, and (C) 25-150 parts by weight of a non-fiber inorganic filler satisfying (C-a) and (C-b), wherein the ratio X / Y of the mass X of the atypical cross-section glass fibers (B) and the mass Y of the non-fiber inorganic filler (C) is more than 1 but less than 7. (C-a) A Mohs hardness of more than 2 but less than 4. (C-b) A melting point or a softening point that is 380 DEG C or higher.

Description

technical field [0001] The present invention relates to a polyphenylene sulfide resin composition which is excellent in mechanical properties and dimensional stability, and in particular, is greatly suppressed in anisotropy and suppressed in expansion during wet heat treatment. Background technique [0002] Polyphenylene sulfide (hereinafter, sometimes abbreviated as PPS) resin is an engineering plastic with excellent heat resistance, flame retardancy, chemical resistance, electrical insulation, heat and humidity resistance, mechanical strength, and dimensional stability. Various molding methods such as extrusion molding can be molded into various molded products, fibers, and films, so they are used in a wide range of fields such as electrical / electronic parts, machine parts, and automobile parts. [0003] From the viewpoint of obtaining the desired characteristics, the PPS resin composition reinforced with a fibrous inorganic filler for the PPS resin is due to the orientati...

Claims

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Application Information

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IPC IPC(8): C08K7/14C08L81/02C08G75/0259C08K3/013C08K3/26
CPCC08K7/14C08L81/02C08G75/0259C08K3/26C08K2201/019C08K2003/265
Inventor 德住启太大久保和哉
Owner TORAY IND INC
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