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Electrically conducting polymer and production method and use thereof

A conductive polymer, polymer technology, applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problems of reduced mechanical strength and fluidity

Inactive Publication Date: 2006-10-11
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When conductive fillers are mixed into these molded resin materials to impart conductivity, their mechanical strength and fluidity are unfavorably lowered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1 and 2

[0096]

[0097] i) Fiber outer diameter

[0098] By observing the fibers as 30 visible images under a scanning electron microscope (×20,000), measuring the fiber outer diameters of 300 fiber filaments with an image analyzer (LUZEX-AP, manufactured by Nireco), these values ​​were averaged to obtain vapor-grown carbon fibers The average diameter (outer diameter).

[0099] ii) aspect ratio

[0100] The aspect ratio was calculated from the average fiber length / average fiber diameter of the vapor-grown carbon fibers. The average length of the vapor-grown carbon fibers was obtained by observing the fibers as 30 visible images under a scanning electron microscope (×2,000) and measuring the fiber diameters of 300 fiber filaments with an image analyzer.

[0101] iii) BET specific surface area

[0102] The BET specific surface area was measured by a nitrogen gas adsorption method (with NOVA1000, manufactured by Yuasa Ionics Inc.).

[0103] iv) d determined by X-ray diffractometry ...

Embodiment 1

[0119] Polyethylene resin (Sun-Allomer PWB02N (MFI: 70), product of SunAllomer Ltd.) (90% by mass) and vapor grown carbon fiber A (10% by mass) were mixed with Laboplast mill R100 (product of Toyo Seiki Seisakusho, Ltd.) Melt kneading at 200°C and 40rpm for 5 minutes (kneading energy: 200mJ / m 3 ). The kneaded product was heated at 200° C. and 200 kgf / cm using a 50-ton heat molding apparatus (manufactured by Nippo Engineering). 2 Down molding was performed for 30 seconds, thereby producing t-plate samples of 10 mm x 10 mm x 2 mm. The matrix resin was heated at 200°C for 100s -1 It has a melt viscosity of 100Pa·s at the shear rate.

Embodiment 2

[0121] Using Laboplast mill R100 (product of Toyo Seiki Seisakusho, Ltd.), polyamide 6 resin (Novamid1010, product of Mitsubishi Chemical Industries, Ltd.) (90% by mass) and vapor-grown carbon fiber A (10% by mass) were mixed at 260°C and Melt kneading at 40 rpm for 10 minutes (kneading energy: 500 mJ / m 3 ). The kneaded product was heated at 200° C. and 200 kgf / cm with a 50-ton thermal molding apparatus (product of Nippo Engineering). 2 Down molding was performed for 30 seconds, thereby producing t-plate samples of 10 mm x 10 mm x 2 mm. The matrix resin was heated at 260°C for 100s -1 It has a melt viscosity of 80Pa·s at the shear rate.

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Abstract

The present invention provides a method for producing a conductive polymer, which comprises preparing a polymer having a melt viscosity of 600 Pa·s or less at a shear rate of 100 s-1 at a mixing energy of 1,000 mJ / m2 or less A step of blending with 1-15% by mass of vapor-grown carbon fibers, and a conductive polymer obtained therefrom. Preferably, the vapor-grown carbon fiber used has a fiber outer diameter of 80-500 nm, an aspect ratio of 40-1,000, a BET specific surface area of ​​4-30 m2 / g, a d002 of 0.345 nm or less obtained by X-ray diffraction, According to the (Id / Ig) ratio of 0.1-2 in the Raman scattering spectrum, Id and Ig respectively represent the peak heights of the 1,341-1,349 cm-1 and 1,570-1,578 cm-1 bands. According to the present invention, excellent electrical conductivity is obtained by mixing vapor-grown carbon fibers in a smaller amount than in conventional methods.

Description

[0001] Cross References to Related Applications [0002] This application is an application filed under 35 U.S.C. §111(a), pursuant to 35 U.S.C. §119(e)(1), claiming the benefits of the Provisional application 60 / 500,237 and provisional application 60 / 546,973, filed February 24, 2004, are entitled on the filing dates. technical field [0003] The present invention relates to a kind of production method of the conductive polymer that uses steam-grown carbon fiber as conductive filler, more specifically relates to a kind of production method of conductive polymer, this polymer is mixed with a small amount of steam-grown carbon fiber, but the performance Conductivity as high as or higher than that of conventional conductive polymers. Also, the present invention relates to a conductive polymer having excellent mechanical strength and conductivity produced by the method, and to uses of the polymer. Background technique [0004] Generally, mixing thermoplastic resins, which are ...

Claims

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Application Information

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IPC IPC(8): C08L101/00C08K7/06H01B1/24H01B13/00
Inventor 长尾勇志山本龙之森田利夫
Owner SHOWA DENKO KK
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