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주요사업
- 시험분석
- 품질검사
- 제품안전·인증·검증
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제품안전(KC)
- 연구개발
- 기업지원
기술정보
비의류제품
Positive Temperature Coefficient Effect of Epoxy Resin Filled with Short Carbon Fibers.
- 출판일1999.03
- 저자
- 서지사항
- 등록일 2016.11.02
- 조회수 466
Researchers investigated the positive temperature coefficient (PTC) of electrical resistivity for an epoxy resin filled with carbon fibers (CF). The upper limit temperature of the PTC region depended strongly on CF content. An increase in CF content increased the upper limit temperature of the PTC region. Researchers proposed a phenomenological model to explain the PTC effect. Cure temperature exerted the greatest influence on upper limit temperature and resistivity at room temperature. Because the current-voltage properties of the composites were not ohmic in the high voltage range, researchers assumed a nongraphic mechanism--tunneling--of conduction. 30 refs.
