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Polyarylene sulfide resin composition and insert molding

A resin composition, polyarylene sulfide technology, applied in the coating and other directions, can solve the problems of increasing the absolute amount of warpage and reducing dimensional accuracy, and achieve the effects of excellent low warpage and high and low temperature impact.

Active Publication Date: 2022-01-25
POLYPLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to such anisotropy of shrinkage rate, warpage may occur in the obtained insert molded product. Especially for insert molded products with a certain size such as large power modules, the absolute amount of warpage becomes large, and the dimensional accuracy may sometimes be reduce

Method used

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  • Polyarylene sulfide resin composition and insert molding
  • Polyarylene sulfide resin composition and insert molding
  • Polyarylene sulfide resin composition and insert molding

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0062] The preparation of the resin composition can be easily prepared by the equipment and method generally used as the conventional preparation method of the resin composition. For example, any of the following methods can be used: method 1), after mixing the components, kneading and extruding using a single-screw extruder or a twin-screw extruder to prepare pellets, and then molding; method 2), Temporarily prepare pellets with different compositions, mix a predetermined amount of the pellets and shape, and obtain a molded product of the target composition after molding; method 3), directly inject one or more of the components into the molding machine; and so on. In addition, a method of forming a part of the resin component into a fine powder, and mixing and adding the other components is a preferable method in order to achieve uniform mixing of these components.

[0063] [Insert molding]

[0064] figure 1 An example of the insert-molded product of the present embodiment...

Embodiment 1～4、 comparative example 1～5

[0074] The polyarylene sulfide-based resin, the inorganic filler, and the olefin-based copolymer were dry-blended at the compositions and content ratios shown in Table 1 using the materials shown below. This was put into a twin-screw extruder with a barrel temperature of 320° C., and melt-kneaded to obtain resin composition pellets of Examples and Comparative Examples.

[0075] Polyarylene sulfide resin A: polyphenylene sulfide resin (PPS), "Fortron KPS" manufactured by Kureha Corporation (melt viscosity: 20 Pa·s (shear rate: 1216 sec) -1 , 310℃))

[0076] Plate-shaped inorganic filler B1: glass flake, average particle size (50% d) 623 μm, average thickness 5 μm, “Flexa REFG-108” manufactured by Nippon Sheet Glass Co., Ltd.

[0077] Fibrous inorganic filler B2: glass fiber, average fiber diameter 10.5 μm, average length 3 mm, “chopped fiber ECS03T-747H” manufactured by Nippon Electric Glass Co., Ltd.

[0078] Powdered and granular inorganic filler B3: calcium carbonate, aver...

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Abstract

[Problem] To provide a polyarylene sulfide resin composition excellent in high and low temperature impact properties and low warpage, and an insert molded article using the resin composition. [Solution] The polyarylene sulfide-based resin composition is characterized by containing: a polyarylene sulfide-based resin A; an inorganic filler B; Olefin-based copolymer C of the structural unit of glycidyl ester of saturated acid, inorganic filler B contains platy inorganic filler B1, fibrous inorganic filler B2 and powdery inorganic filler B3, the content of platy inorganic filler B1 The mass ratio B1 / A to the polyarylene sulfide resin A is 0.20 to 0.85, and the content of the fibrous inorganic filler B2 is expressed as the mass ratio B2 / A to the polyarylene sulfide resin A. From 0.30 to 1.1, the content of the powdery inorganic filler B3 is more than 0.2 to 0.80 in terms of mass ratio B3 / A to the polyarylene sulfide resin A.

Description

technical field [0001] The present invention relates to a polyarylene sulfide-based resin composition and an insert-molded article. Background technique [0002] Insert-molded products are molded products obtained by integrally molding an insert member made of metal, inorganic solids, etc., and a resin member made of a thermoplastic resin composition. application. However, the thermal expansion rate and the shrinkage rate due to the temperature change of the thermoplastic resin composition and the metal constituting the insert-molded product are greatly different, and therefore, the insert-molded product may be damaged due to the temperature change during use. Therefore, high-low temperature impact resistance (thermal shock resistance) is required for insert-molded products. [0003] Polyarylene sulfide-based resins are known as resins excellent in high and low temperature impact properties among thermoplastic resins. However, polyarylene sulfide-based resins lack toughne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L81/02B29C45/14C08K7/00C08L23/00
CPCB29C45/14C08K7/00C08L23/00C08L81/02
Inventor 大西克平金塚竜也
Owner POLYPLASTICS CO LTD
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