Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 132, Issue -, Pages 31-37Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2016.06.010
Keywords
Polymer-matrix composites (PMCs); Electrical properties; Mechanical properties; Scanning electron microscopy (SEM); Segregated structure
Categories
Funding
- National Natural Science Foundation of China [31170514, 31370557]
- Doctorate Fellowship Foundation of Nanjing Forestry University
- Priority Academic Program Development of Jiangsu Higher Education Institution (PAPD)
- Graduate Cultivation Innovative Project of Jiangsu Province [CXZZ11-0525]
- Doctoral Program of Higher Education [20113204110011]
- Natural Science Foundation of Jiangsu Province of China [BK20150875]
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Electrically conductive nano bamboo charcoal (NBC)/ultra-high molecular weight polyethylene (UHMWPE) composites with a segregated structure were prepared by the high-speed mechanical mixing and hot-pressing method. Instead of uniform dispersion in polymer matrix, NBC distributed along specific paths and formed a segregated conductive network, which resulted in a low electrical percolation threshold (2.0 vol%) of the composites. The composite with 7 vol% NBC possessed a conductivity of 1.1 x 10(-2) S/cm, which is adequate for many electrical applications. With the incorporation of NBC, the tensile strength of the segregated composites first increased by 10% with 3 wt% NBC content as compared with neat UHMWPE and then decreased with increasing filler content. Moreover, the thermal stability of NBC/UHMWPE composites was also improved as the loading of NBC increased. (C) 2016 Elsevier Ltd. All rights reserved.
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