摘要
以环氧树脂、酸酐、乙二醇、乙醇、纳米银等为原料制备了耐湿热导电电磁屏蔽涂料.该涂料在190°C下所成膜的导电性能良好(0.035 mΩ/□);在-45和70°C条件下连续放置24 h,所成漆膜均不起泡不脱落;经过5个周期的交变耐湿热实验后,漆膜完好,无起泡脱落现象;电磁屏蔽测试表明,其能效可达40-60 dB.
A kind of dope for shielding electromagnetic interference(EMI),with temperature and humidity resistance,was obtained by epoxy resin,acid anhydride,glycol,alcohol and nano-sliver powder.The experiment shows that the membrane obtained at 190 °C has good electrical performance with square resister value about(0.035) mΩ/□).The continuous temperature resistance experiment,at-45 °C and 70 °C for 24 h respectively,shows the membrane obtained keeps its original appearance without any frothiness and breaking off.In the alternating temperature and humidity resistance experiment in 5 periods,with each period including RH95% at (60±5) °C for 18h and RH95% at(30±5) °C for 6h,the membrane also keeps its integrity.The shielding electromagnetic interference(EMI) test shows the shielding effectiveness(SE) ranges 40～60 dB.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2007年第S2期79-82,共4页
Journal of Shanghai Jiaotong University
基金
国防科工委军工基金资助项目
关键词
耐湿热
电磁屏蔽
纳米银
方阻
环氧树脂
temperature and humidity resistance
shielding electromagnetic interference
nano-silver
square resistor
epoxy resin
