摘要
以高密度聚乙烯(PE-HD)为聚合物基体材料、乙烯-乙酸乙烯酯(EVA)为增韧剂、低密度聚乙烯(PE-LD)为增塑剂、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)为交联剂制备了PE-HD/EVA/PE-LD/ACET导电发泡复合材料。结果表明,PE-HD/EVA/PE-LD=50/30/20(质量比,下同)、ACET填加量为35%(质量分数,下同)、发泡剂AC的添加量为4%、交联剂DCP填加量为0.5%时,制备的导电发泡复合材料具有比较理想的闭孔泡孔结构。经过升温电阻测试,发现PE-HD/EVA/PE-LD/ACET导电发泡复合材料具有良好的开关特性,呈现明显的正温度系数(PTC)特性;AC发泡剂用量为4%时,PTC效应最强。
PE-HD/EVA/PE-LD/ACET conductive foamed composites were prepared using acetylene carbon black （ACET） as a conductive filler, azobisformamide （AC） as a foamer, and dicumyl peroxide（DCP） as a cross-linker. Closed cell structure was obtained when PE-HD/EVA/PE-LD is 50：30：20（w/w/w）,and acetylene carbon black, azobisformamide, and dicumyl peroxide content were 35, 4, and 0.5 wt %, respectively. The prepared conductive foam composites had good switching characteristics, and displayed positive temperature coefficient （PTC） effect, which was the strongest when the contents of AC was 4 wt %.
出处
《中国塑料》
CAS
CSCD
北大核心
2010年第9期49-52,共4页
China Plastics
基金
辽宁省教育厅高等学校A类资助项目(L2010391)
关键词
乙炔炭黑
低密度聚乙烯
乙烯-乙酸乙烯酯
高密度聚乙烯
正温度系数特性
导电发泡复合材料
acetylene carbon black
low density polyethylene
ethylene-vinyl aceate
high-density polyethylene
positive temperature coefficient effect
conductive foamed composite
