摘要
通过向低密度聚乙烯(PE-LD)中添加导电填料羰基多晶铁纤维(MCIF)和导电镍粉(Ni),制备了 PE-LD/Ni/MCIF 电磁屏蔽复合薄膜材料,研究了导电填料对复合薄膜材料电磁性能、导电性能和力学性能的影响。结果表明,该薄膜对较宽频段电磁波的屏蔽效能达到37～56 dB(500～1500 MHz),复合薄膜材料的"渗滤阈值"约为20%～25%;当导电填料(MCIF:Ni=1:1)的含量为18%(质量分数,下同)时,复合薄膜拉伸强度达到最大(12.5 MPa),而其断裂伸长率却随着导电填料含量的增加总体呈下降趋势。
An electromagnetic shielding film was prepared by introducing multi-crystal iron fiber（MCIF） and nickel powder（Ni） into low density polyethylene（PE-LD）. Effects of the loadings of MCIF/Ni on the electromagnetic shielding, electrical and mechanical properties of the composite film were studied. The results showed that the material＇s shielding efficiency was 37-56 dB （500-1 500 MHz）, and percolation threshold was about 20 % -25 %. When the content of MCIF/Ni（MCIF：Ni = 1：1） was 18 wt %, a maximum tensile strength of 12.5 MPa was observed, however, the elongation at break was decreased.
出处
《中国塑料》
CAS
CSCD
北大核心
2007年第11期53-56,共4页
China Plastics
基金
国家部委预研项目(48575080116)
关键词
低密度聚乙烯
复合薄膜
电磁屏蔽
多晶铁纤维
镍粉
low density polyethylene
composite fiber
nickel powder film
electromagnetic shielding
multi-crystal iron
