期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 42, 期 5, 页码 560-566出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2011.01.015
关键词
Hybrid; Polymer-matrix composites (PMCs); Mechanical properties; Thermal properties
资金
- Ministry of Education, Science and Technology [2010-0011176]
- National Research Foundation of Korea [2010-0011176] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A series of nanocomposites based on poly(ethylene terephthalate) (PET) and exfoliated graphite (EG) are prepared by melt-compounding method and their morphology, structures, thermal stability, mechanical and electrical properties are then investigated. For manufacturing the nanocomposites, EG, which is composed of disordered graphene sheets, is prepared by the acid-treatment and following rapid thermal expansion of micron-sized crystalline natural graphites. It is characterized that disordered graphene sheets of EG are well dispersed in the PET matrix without forming crystalline aggregates even at high EG content of 7.0 wt.%. Accordingly, thermal and thermo-oxidative degradation temperatures of PET/EG nanocomposites are improved substantially with the increment of EG content. In addition, dynamic storage moduli of the nanocomposites increase noticeably with increasing the EG content. The electrical conduction path of graphene sheets in the nanocomposites is formed at 5 wt.% EG. (C) 2011 Elsevier Ltd. All rights reserved.
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