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Molding made from conductive resin composition

A technology for conductive resin and molded products, applied in the field of molded products, to achieve the effects of small discharge current, good fluidity, and less shedding

Active Publication Date: 2014-07-02
TEIJIN KASEK KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patent documents exemplify the surface resistivity of molded products, but this is a common measure against electrostatic hazards, and cannot fully satisfy consumers' expectations for static electricity in the progress of small and lightweight components, high integration, and high precision. Stricter Requirements for Hazards

Method used

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  • Molding made from conductive resin composition
  • Molding made from conductive resin composition
  • Molding made from conductive resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10、 comparative example 1～5

[0098] 1. Manufacture of Composition Granules

[0099] Composition granules were produced by the method described below.

[0100] After dry-blending the components described in Table 1 in the proportions shown in Table 1, a vented twin-screw extruder equipped with a screw having a diameter of 30 mmφ, L / D=33.2, and two kneading zones (manufactured in Kobe) was used. Steel Works Co., Ltd. product: KTX30), melt-kneading, extrusion, and strand cutting were carried out at a cylinder temperature of 290° C. to obtain pellets of each composition.

[0101] 2. Manufacture of molded products

[0102] By injection molding, the resin composition is molded into figure 1 The camera shutter parts shown are cut test pieces according to various evaluations.

[0103] 3. Evaluation method

[0104] Each value in an Example was calculated|required by the following method.

[0105] (1) Surface resistivity

[0106] The molded article obtained by the above method was measured using a resistivity...

Embodiment 3

[0147] Example 3, Example 4, and Examples 6 to 10 show the case of changing the type of conductive carbon black, the case of further blending glass fiber or glass flakes, the further blending of polytetrafluoroethylene particles, and the further blending of In addition to antioxidants, all showed good evaluation results.

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Abstract

The invention provides a molding made from a conductive resin composition. The surface of the molding can be prevented from being adhered to dust or dust or dirt and the spark current can be prohibited by controlling the surface resistivity and static voltage half life within a conductive area. As the conductive carbon material is not easy to fall off, the flowability and appearance are good. The invention is characterized in that the molding is formed by a conductive resin composition comprising 1-20 parts by weight of conductive carbon material (C component) relative to 100 weight parts of resin; the resin comprises 75-95% by weight aromatic polycarbonate resin (A component) and 5-25% by weight polyethylene terephthalate (B component). The invention is the molding for electric and electronic components, office equipment components, semiconductor related components, glass containers and automobile external mounted components which meets the requirement of (1) and (2) and comprises parts like a photography shutter. The surface resistivity of (1) is 100-105 Omega / sq, and the half life of (2) applied with 10kv is lower than 10 seconds.

Description

technical field [0001] The present invention relates to a molded article formed from a conductive resin composition. In more detail, the present invention relates to a molded article formed of a conductive resin composition capable of controlling good conductivity and rapid electrostatic voltage decay, preventing dust or dust from adhering to the surface of the molded article, and generating dust from the surface of the molded article. The instantaneous discharge current (spark current) is small, the conductive carbon material is less detached from the resin surface of the molded product, and it is also excellent in fluidity and appearance. It is suitable for electrical and electronic parts including camera shutter parts, office equipment parts, and semiconductor-related components, glass containers or automotive exterior parts. Background technique [0002] Electric and electronic components such as shutter base plates, shutter blade pushers (シヤツタ一珠押押え), intermediate plate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/04C08K7/00C08K13/04C08K7/14C08K3/40
Inventor 今森茧子光永正树川端千裕
Owner TEIJIN KASEK KK
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