Tough semiconductor polycarbonate/multiwalled carbon nanotubes nanocomposites by rubber modification

被引：13
作者：
Gonzalez, I. [1 ]
Santamaria, P. [1 ]
Eguiazabal, J. I. [1 ]
机构：
[1] Fac Ciencias Quim UPV EHU, Dept Ciencia & Tecnol Polimeros, Inst Mat Polimer POLYMAT, San Sebastian 20080, Spain
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2015年 / 71卷
关键词：
Polymer-matrix composites (PMCs); Electrical properties; Impact behavior; Mechanical testing; HIGH ELECTRICAL-CONDUCTIVITY; (MWNT)/POLYCARBONATE NANOCOMPOSITES; POLYMER NANOCOMPOSITES; RHEOLOGICAL PROPERTIES; PERCOLATION-THRESHOLD; MECHANICAL-PROPERTIES; FILLED POLYCARBONATE; COMPOSITES; BLENDS; MORPHOLOGY;
D O I：
10.1016/j.compositesa.2015.01.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tough polycarbonate (PC)/multiwalled carbon nanotube (MWCNT) nanocomposites (NCs) modified by a maleated styrene/ethylene-butylene/styrene (mSEBS) rubber were obtained in the melt state using a highly dispersed PC/MWCNT master-batch. An electrical percolation threshold (pc) occurred at only 0.5% MWCNT showing a power law critical exponent of 2.60, which is characteristic of a three-dimensional percolated structure. The presence of MWCNT decreased the rubber particle size due to an increase in matrix viscosity. In addition to high electrical conductivity, the elastic modulus of the NCs was similar to that of the PC, as a result of the combined presence of 0.5% MWCNT and 4% mSEBS; the mSEBS was also able to provide (i) considerable impact strength, (ii) clear ductile behavior and (iii) increased resistance against crack propagation. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：227 / 234
页数：8
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