Electrical Resistivity of Polycarbonate/Multiwalled Carbon Nanotube Composites Under Varying Injection Molding Conditions

被引：9

作者：

Park, Dong Hyun ^{[1
]}

Yoon, Kwan Han ^{[1
]}

Park, Young-Bin ^{[2
]}

Lee, Young Sil ^{[3
]}

Lee, Young Jun ^{[3
]}

Kim, Sang Wan ^{[3
]}

机构：

[1] Kumoh Natl Inst Technol, Dept Polymer Sci & Engn, Gumi 730701, Gyeongbuk, South Korea

[2] FAMU FSU Coll Engn, Dept Ind & Mfg Engn, Tallahassee, FL 32310 USA

[3] Samsung Cheil Ind Inc, Uiwang Si 437711, Gyeonggi Do, South Korea

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2009年 / 113卷 / 01期

关键词：

polycarbonate; nanocomposites; morphology; electrical resistivity; injection molding; (MWNT)/POLYCARBONATE NANOCOMPOSITES; FILLED POLYCARBONATE; SINGLE-WALL; DISPERSION; BEHAVIOR;

D O I：

10.1002/app.29989

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Multiwalled carbon nanotube (MWCNT)-filled polycarbonate composites were prepared by a corotating intermeshing twin-screw extruder. The surface resistivities of compression and injection-molded specimens were quite different, the difference ranging from 10(3) to 10(7) Omega/sq at varying MWCNT concentrations. The surface resistivity of the injection-molded specimen at 2 wt % loading varied up to 10(5) Omega/sq in the specimen thickness direction and up 10(4) Omega/sq in the polymer flow direction with respect to the gate. The difference in surface resistivity with the positions of injection-molded specimen was confirmed with the morphology, which showed the difference in MWCNT number density (numbers/surface area). There was no significant effect on surface resistivity with injection pressure, holding pressure, and molding temperature. The specimens prepared at the injection speed of 13 mm/s showed surface resistivities 10(3)-10(4) Omega/sq depending on the positions, which was comparable with the compression-molded specimens, which had a Surface resistivity of 10(3) Omega/sq. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 450-455, 2009

引用

页码：450 / 455

页数：6

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