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Polyphenylene sulfide resin composition and moldings thereof

A technology of polyphenylene sulfide resin and composition, which is applied in the direction of instruments, optics, optical components, etc., can solve the problems of insufficient reduction of lens blur, and achieve the effect of not impairing fluidity and mechanical strength

Inactive Publication Date: 2013-12-11
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(For example, refer to Patent Document 9.) However, in the compositions specifically disclosed in Patent Documents 8 and 9, at around 200° C., the blurring of lenses etc. is not sufficiently reduced.

Method used

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  • Polyphenylene sulfide resin composition and moldings thereof
  • Polyphenylene sulfide resin composition and moldings thereof
  • Polyphenylene sulfide resin composition and moldings thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~10

[0173] Examples are shown in Table 1. Examples 1 to 4 are compositions in which Mg-M-Al-based hydrotalcite particles are mixed with PPS. The more Mg-M-Al-based hydrotalcite particles, the smaller the haze value and the less gas generation.

[0174] Examples 5 to 7 are examples in which Mg-M-Al-based hydrotalcite particles were added to PPS, and glass fibers were further blended. The more Mg-M-Al-based hydrotalcite particles, the smaller the haze value and the less gas generation. In addition, the molding shrinkage rate becomes small by blending glass fibers.

[0175] Examples 8 to 10 are examples in which Mg-M-Al-based hydrotalcite particles were added to PPS, and glass fibers and calcium carbonate were further blended. The more Mg-M-Al-based hydrotalcite particles, the smaller the haze value and the less gas generation. Molding shrinkage was equivalent to Examples 5 to 7 in which only glass fibers were blended.

[0176] [Table 1]

[0177]

Embodiment 11~27

[0183] Table 3 shows examples in the case of mixing two types of PPS resins. In addition, the melt viscosity of the composition containing 40 parts by weight of (A-1) PPS resin-1 and 60 parts by weight of (A-2) PPS resin-2 was 90 Pa·s. Examples 11 to 14 are compositions in which Mg-M-Al-based hydrotalcite particles (M=Mg) are mixed with PPS resin. The larger the compounding amount of the Mg-M-Al-based hydrotalcite particles, the smaller the haze value and the smaller the gas generation.

[0184] Examples 15 to 17 are examples in which glass fibers were further blended into compositions in which Mg-M-Al-based hydrotalcite particles (M=Mg) were blended into PPS resin. The more Mg-M-Al-based hydrotalcite particles, the smaller the haze value and the less gas generation. In addition, the blending of glass fibers increases the bending strength and reduces the mold shrinkage.

[0185] Examples 18 to 22, 26, and 27 are examples in which glass fibers and calcium carbonate were furt...

Embodiment 23

[0186] Example 23 is an example of replacing the Mg-M-Al-based hydrotalcite particles (M=Mg) used in Example 18 with Mg-M-Al-based hydrotalcite particles (M=Zn). Other raw materials and compounding amounts Same as in Example 18. In Example 23, the haze value was larger than that of Example 18, but it is considered that the amount of generated gas and cloudiness of the glass were sufficiently reduced. Therefore, even when the hydrotalcite particles of M=Zn are used, it is considered that the effects of the present invention are sufficiently exhibited.

[0187] In Examples 24 and 25, Mg-M-Al-based hydrotalcite particles (M=Mg) were added to a resin having a viscosity different from the melt viscosity of the PPS resin used in Examples 1 to 23, 26 and 27, and Examples include fiberglass and calcium carbonate. It can be seen that the Mg—M—Al based hydrotalcite particles of the present invention exhibit the effect of reducing the amount of gas generated with respect to resins of v...

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Abstract

A polyphenylene sulfide resin composition obtained by blending (A) 100 parts by weight of a polyphenylene sulfide resin with (B) 0.1 to 30 parts by weight of hydrotalcite particles which each comprise an Mg-Al hydrotalcite core particle and an Mg-M-Al hydrotalcite layer provided on the surface of the core particle, M being a divalent metal.

Description

technical field [0001] The present invention relates to a polyphenylene sulfide resin composition and a molded article thereof, which generate a small amount of gas in a region below the melting point of the polyphenylene sulfide resin near 200° C. without impairing fluidity and mechanical strength. The molded article formed from the polyphenylene sulfide resin composition of the present invention is particularly suitable for lenses and optical components having reflective surfaces. Background technique [0002] Polyphenylene sulfide resin (hereinafter sometimes referred to as PPS resin) is a special engineering plastic with high heat resistance, which has excellent mechanical strength, rigidity, flame retardancy, chemical resistance, electrical characteristics and dimensional stability. Therefore, injection molding is used as a center, and it is widely used in various electrical and electronic parts, home appliance parts, automobile parts, machine parts, and the like. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L81/02C08K3/26G02B1/04
CPCC08K3/26C08L81/02G02B1/04
Inventor 西刚史儿玉和美安田昌充
Owner TORAY IND INC