摘要
以低密度聚乙烯(LDPE)和乙烯-乙酸乙烯酯(EVA)为主基体,乙炔炭黑(ACET)为导电填料,偶氮二甲酰胺(AC)为发泡剂,过氧化二异丙苯(DCP)为交联剂制备LDPE/EVA/CB导电泡沫复合材料.通过分析炭黑含量、交联剂、发泡剂对复合材料电性能的影响表明,该导电泡沫具有较理想的泡孔结构,升温电阻测试表明,LDPE/EVA/ACET导电发泡复合材料具有较好的开关特性,呈明显的正温度系数(PTC)特性,并确定了发泡剂和交联剂的用量,获得了具有较好泡沫性能和PTC特性的导电泡沫材料.
LDPE/EVA/CB conductive foam was made with low density polyethlene （LDPE） and ethylenevinylacetate copolymer （EVA） as matrix, acetylene carbon black （CB） as conductive filler, azobisformamide （AC） as foamer and dicumyl peroxide （DCP） as crosslinker. The bubble structure and resistivity-temperature characteristic were observed. Influences of carbon black content, crosslinker and foamer on conductive properties of LDPE/EVA/CB foaming conductive composites were investigated. The obtained foam has a rather good bubble structure and a switching characteristic. Acetylene CB filled LDPE/EVA system exhibits positive temperature coefficient （PTC） effect during heating process. The proper filler contents of the crosslinker and foamer were confirmed to make the composite have not only good foam performance but also PTC characteristic.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2008年第1期105-108,共4页
Journal of Jilin University:Science Edition
关键词
低密度聚乙烯
炭黑
泡沫
正温度系数特性
导电复合材料
low density polyethlene
carbon black
foam
positive temperature coefficient characteristic
conductive composite
