制造电子，电气设(she)备各(ge)种元(yuan)器件的材料除了(le)机械强度，耐(nai)温，易成型(xing)等基本要(yao)求外，对电性能的要(yao)求因用途不同而差异(yi)很(hen)大。

电(dian)(dian)(dian)(dian)子工(gong)业中大量(liang)的(de)(de)(de)(de)(de)塑料(liao)用(yong)作绝缘材料(liao)，希(xi)望(wang)在(zai)高(gao)(gao)温(wen)，高(gao)(gao)频下的(de)(de)(de)(de)(de)绝缘电(dian)(dian)(dian)(dian)阻高(gao)(gao)而(er)介(jie)电(dian)(dian)(dian)(dian)性能(neng)(neng)稳定，对有(you)电(dian)(dian)(dian)(dian)磁波(bo)发射(she)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)(dian)子设(she)备(bei)既要(yao)(yao)不(bu)让(rang)电(dian)(dian)(dian)(dian)磁波(bo)射(she)向周围环境，又要(yao)(yao)阻隔外界电(dian)(dian)(dian)(dian)磁波(bo)对电(dian)(dian)(dian)(dian)子设(she)备(bei)正常工(gong)作的(de)(de)(de)(de)(de)干扰，所以需(xu)要(yao)(yao)一种有(you)一定导电(dian)(dian)(dian)(dian)性的(de)(de)(de)(de)(de)塑料(liao)来(lai)传导和屏蔽电(dian)(dian)(dian)(dian)磁波(bo)，塑料(liao)的(de)(de)(de)(de)(de)一大优点是(shi)质(zhi)量(liang)轻(qing)，易加工(gong)，但因是(shi)高(gao)(gao)分子化合物均(jun)有(you)不(bu)导电(dian)(dian)(dian)(dian)性，但若能(neng)(neng)从(cong)组成或分子结构上作改(gai)进(jin)赋予良好的(de)(de)(de)(de)(de)导电(dian)(dian)(dian)(dian)性则(ze)对电(dian)(dian)(dian)(dian)子设(she)备(bei)的(de)(de)(de)(de)(de)轻(qing)巧和功能(neng)(neng)的(de)(de)(de)(de)(de)延(yan)伸是(shi)一种新颖材料(liao);有(you)一定磁场(chang)强(qiang)度(du)的(de)(de)(de)(de)(de)磁性塑料(liao)能(neng)(neng)代替天然的(de)(de)(de)(de)(de)磁铁，也是(shi)电(dian)(dian)(dian)(dian)子工(gong)业所追求的(de)(de)(de)(de)(de)新材料(liao)。

因此把(ba)具(ju)有绝缘，屏蔽，导电，导磁(ci)功能的塑料(liao)在电子工业中的应用进(jin)行罗(luo)列和分(fen)析，对(dui)材料(liao)的生(sheng)产者(zhe)是一种促进(jin)，对(dui)材料(liao)的使(shi)用者(zhe)是一种互通(tong)和借鉴。