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Resin composition and molded article

A technology for resin compositions and molded products, which is applied in the field of resin compositions and molded products, can solve problems such as reducing the coefficient of dynamic friction, and achieve the effects of excellent sliding properties and low coefficient of dynamic friction

Active Publication Date: 2014-07-30
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PEEK composition mixed with PTFE powder can indeed reduce the coefficient of dynamic friction, but the sliding characteristics represented by the limit PV value are still at a low level, and the sliding properties need to be further improved

Method used

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  • Resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] Carry out pre-mixing of aromatic polyetherketone resin (2) and fluororesin (1) according to the ratio (parts by mass) shown in Table 1, using a twin-screw extruder (φ15mm, L / D=60), in the barrel Melt-kneading was carried out under conditions of a temperature of 390° C. and a screw rotation speed of 300 rpm to produce a resin composition. Using the obtained resin composition, a test piece was produced by the above-mentioned method, and the measurement of the limit PV value, the coefficient of dynamic friction, and the notched IZOD impact strength was performed. And using this test piece, the average dispersed particle diameter and the maximum dispersed particle diameter of the fluororesin (II) were calculated.

Embodiment 2

[0125] Carry out pre-mixing of aromatic polyetherketone resin (2) and fluororesin (1) according to the ratio (parts by mass) shown in Table 1, using a twin-screw extruder (φ15mm, L / D=60), in the barrel Melt-kneading was carried out under conditions of a temperature of 390° C. and a screw rotation speed of 500 rpm to manufacture a resin composition. Using the obtained resin composition, a test piece was produced by the above-mentioned method, and the measurement of the limit PV value, the coefficient of dynamic friction, and the notched IZOD impact strength was performed. And using this test piece, the average dispersed particle diameter and the maximum dispersed particle diameter of the fluororesin (1) were calculated.

Embodiment 3

[0127] Carry out the premixing of aromatic polyetherketone resin (2) and fluororesin (1) according to the ratio (mass part) shown in Table 1, use twin-screw extruder (φ15mm, L / D=60), in barrel Melt-kneading was carried out under conditions of a temperature of 390° C. and a screw rotation speed of 300 rpm to produce a resin composition. Using the obtained resin composition, a test piece was produced by the above-mentioned method, and the measurement of the limit PV value, the coefficient of dynamic friction, and the notched IZOD impact strength was performed. And using this test piece, the average dispersed particle diameter and the maximum dispersed particle diameter of the fluororesin (1) were calculated.

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Abstract

The purpose of the present invention is to provide a resin composition that enables a molded article provided with both a low coefficient of kinetic friction and a high PV limit value to be obtained. The present invention is a resin composition containing an aromatic polyether ketone resin (I) and a fluorine resin (II), and is characterized in that the fluorine resin (II) is a copolymer of tetrafluoroethylene and a perfluoro ethylenically unsaturated compound represented by general formula (1): CF2=CF-Rf1 (1) (In the formula, Rf1 represents -CF3 or -ORf2. Rf2 represents a perfluoroalkyl group with a carbon number of 1 to 5.) The resin composition is further characterized in that: the mass ratio, (I):(II), between the aromatic polyether ketone resin (I) and the fluorine resin (II) is 95:5 to 50:50; the melt viscosity ratio, (I) / (II), between the aromatic polyether ketone resin (I) and the fluorine resin (II) is 0.3 to 5.0; the fluorine resin (II) is dispersed in the form of particulates in the aromatic polyether ketone resin (I); and the average dispersed particle diameter of the fluorine resin (II) is less than 3.0 mum.

Description

【Technical field】 [0001] The present invention relates to a resin composition and a molded article. 【Background technique】 [0002] In recent years, for the purpose of weight reduction and cost reduction, active research has been carried out on the resinization of metal parts, and automotive parts and industrial parts using thermoplastic resins such as polyamide resins, polycarbonate resins, and polyacetal resins Components or electrical and electronic components are being put to practical use. In sliding applications such as gears and bearing supports, metal sliding parts are being replaced by resin sliding parts. Insufficient sliding properties cause problems such as abrasion, melting, cracking, and damage. [0003] On the other hand, fluororesins have excellent characteristics such as sliding properties, heat resistance, chemical resistance, solvent resistance, weather resistance, flexibility, and electrical properties, and are widely used in automobiles, industrial mac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10C08L27/18
CPCC08G2650/40C08L71/00
Inventor 增田晴久足立有希
Owner DAIKIN IND LTD
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