Enhanced dielectric properties of polyamide 11/multi-walled carbon nanotubes composites

被引：14

作者：

Huang, Yongzhong ^{[1
]}

Tan, Lirong ^{[1
]}

Zheng, Shaodi ^{[1
]}

Liu, Zhengying ^{[1
]}

Feng, Jianming ^{[1
]}

Yang, Ming-Bo ^{[1
,2
]}

机构：

[1] Sichuan Univ, Coll Polymer Sci & Engn, Chengdu 610065, Peoples R China

[2] Sichuan Univ, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2015年 / 132卷 / 40期

基金：

中国国家自然科学基金;

关键词：

composites; dielectric properties; nanostructured polymers; polyamides; NONISOTHERMAL CRYSTALLIZATION KINETICS; NANOTUBE/POLYMER COMPOSITES; POLYMER NANOCOMPOSITES; MIXTURE FORMULAS; NYLON-11; CONSTANT; BEHAVIOR; CONDUCTIVITY; POLYMORPHISM; MATRIX;

D O I：

10.1002/app.42642

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Composites with multi-walled carbon nanotubes (MWNTs) involved in polyamide 11 (PA11) were prepared via a conventional melt blending method. The structure, morphology, crystallization behavior, electrical, and dielectric properties of composites were investigated. The results demonstrated that the dispersed uniformly MWNTs favored the formation of crystal of PA11 when the composites were quenched from melt. The dielectric constant of composites was dependent on the electric field frequency and MWNTs content, and the highest value of dielectric constant was as high as 350 for the composite with 1.21 vol % MWNTs at 10(3) Hz, accompanied by a low dielectric loss. The enhanced dielectric properties could be interpreted by the formation of abundant nanocapacitors within the composites and the interfacial polarization effect resulting from accumulation of charge carriers at the internal interfaces between MWNTs and PA11. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42642.

引用

页数：9

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