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Conductive multilayer blow molding and conductive resin composition

A technology of resin composition and conductive resin, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, layered products, synthetic resin layered products, etc., can solve the problem of limited extrusion molding devices, negative impact on product strength, extrusion Problems such as narrow compression molding conditions

Inactive Publication Date: 2003-05-28
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, our research has revealed that this known resin composition can be molded by injection molding or as press molding under high pressure, but when not applying any high pressure such as blow molding on the surface of the molded article used to produce Or hollow molded products such as tube plastic, it brings some problems
Especially, when this known resin composition is used for such a hollow molded article, the surface of the formed molded article is often rough, so that the molded article does not have good surface smoothness
In addition, the extrusion molding conditions of this known resin composition are so narrowly restricted that the extrusion molding devices that can be used therefor are also limited.
For these reasons, we have found that this known resin composition cannot simply be used for such hollow moldings
Moreover, we have further found that the surface roughness of the molded product has some negative effects on the product strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 13 and comparative example 1 to 3

[0203]The conductive PPS resin composition to be tested was pelletized and injection molded at a resin temperature of 320°C and a molding temperature of 150°C to form a molded article. The notched Izod impact strength of each molded sample was determined according to ASTM D256. Notched Izod Impact Strength (Examples 33 to 42 and Comparative Examples 5 to 6):

Embodiment 33 to 42 and comparative example 5 to 6

[0204] The conductive PPS resin composition to be tested was pelletized and injection molded into molded articles at a resin temperature of 50°C higher than the melting point of the thermoplastic resin (F) and a molding temperature of 80°C. The notched Izod impact strength of each molded sample was determined according to ASTM D256. Inner Surface Smoothness (Examples 1 to 13 and Comparative Examples 1 to 3):

[0205] The condition and roughness of the inner surface of each tube sample was visually inspected. Surface smoothness (Examples 33 to 42 and Comparative Examples 5 to 6):

[0206] The granulation of the resin composition to be measured is placed in the C-5059D2-1 type melt indexer (aperture is 0.0825 inch, hole length is 0.315 inch) that Dongyang Seiko Company produces, and the thermoplastic The melting point of the resin was kept at a temperature of 60°C for 5 minutes, and then extruded under a load of 5Kg to obtain a blind tube. Effectively performing this operatio...

reference example 1

[0209] Ten tube samples with a length of 30 cm were placed in a cold vessel at -40°C for 4 h. The tube samples were then taken out of the cold vessel, and a ball weighing 0.454 Kg was dropped onto each tube sample from a height of 304.8 mm to check whether the tube sample was broken. Reference Example 1: Polymerization of PPS resin

[0210] Sodium sulfide 9 hydrate (6.005Kg, 25 moles), sodium acetate (0.205Kg, 2.5 moles) and N-methyl-2-pyrrolidone (hereinafter referred to as NMP) (5Kg) are placed in an autoclave with a stirrer, After gradually heating to 205°C and introducing nitrogen into the kettle, water (3.61) was distilled off. Next, the kettle was cooled to 180° C., and 1,4-dichlorobenzene (3.719 Kg, 25.3 moles) and NMP (3.7 Kg) were added. Then, the autoclave was sealed and heated to 270° C. under nitrogen, and reacted at this temperature for 2.5 h. After cooling, the reaction product was washed 5 times with lukewarm water, and dried at 80° C. for 24 h under reduced ...

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Abstract

An electroconductive, multilayered hollow molding comprising at least two or more thermoplastic resin layers, in which at least one layer is a layer (a) of a polyphenylene sulfide resin or a thermoplastic resin composition consisting essentially of a polyphenylene sulfide resin, at least one layer is a layer (b) of a thermoplastic resin except polyphenylene sulfide resins or a thermoplastic resin composition consisting essentially of a thermoplastic resin except polyphenylene sulfide resins, and at least one of those layers (a) and (b) and other layers is a layer of an electroconductive, thermoplastic resin composition indispensably comprising an electroconductive filler and / or an electroconductive polymer, and a thermoplastic resin.

Description

technical field [0001] The present invention relates to a conductive multilayer hollow molded product with good and well-balanced properties of heat resistance, hot water resistance, chemical resistance, alcohol gasoline penetration resistance, appearance, interlayer adhesion and low temperature stiffness, and a multilayer hollow mold suitable for such Conductive resin composition for products. Background technique [0002] There are various techniques which are widely known to produce thermoplastic resin hollow moldings. For example, polyamide resin blow molding technology produces polyamide resin ducts for automobile engine compartments, and extrusion molding technology produces saturated polyester resins, polyamide resins, polyolefin resins, and thermoplastic polyurethane pipes. [0003] However, due to the poor heat resistance, hot water resistance, and chemical resistance of conventional single-layer hollow moldings of polyamide resins, saturated polyester resins, poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B1/00B29C49/00B29C49/22B32B1/08B32B27/08H01B1/20H01B1/22H01B1/24
CPCB29C49/0005H01B1/20B29C49/22H01B1/24H01B1/22B32B1/08B32B27/08C08K3/04B32B27/20B32B27/28B32B27/34B32B3/266B32B2307/202B32B2270/00B32B2264/108B32B2597/00B32B27/286B32B27/40B32B27/36B32B27/32B32B2377/00B32B2375/00B32B2367/00
Inventor 石王敦嶋崎周夫馆山胜小林和彦
Owner TORAY IND INC