電纜廠告訴您，電線電纜絕緣材料的交聯機制是通過物理或化學方法，使聚合物絕緣材料由線性分子結構向三維網絡結構轉變。由熱塑性材料轉變為熱固性絕緣材料，從而提高其耐候性、機械性能及耐環境性能。20世紀50年代，美國發明了交聯絕緣電線電纜，并在60年代逐步使用。十多年來，交聯絕緣在國內得到了廣泛的應用，正逐漸取代聚塑料絕緣。

電纜都有哪些類型？1、VV型、YJV型：聚氯1乙烯型電力電纜、交聯聚乙烯型電力電纜，不能受機械外力作用，亨通光伏電線，適用于室內、隧道內的橋架及管道內敷設。 ?2、VV22型、YJV22型：內鋼帶鎧裝電力電纜，能承受一定的機械外力作用，但不能承受大的拉力。 3、ZR-YJFE型、NH-YJFE型：阻燃、耐火等特種輻照交聯電力電纜，電纜zui高長期允許工作溫度可達125°C，可敷設在吊頂內、高層建筑的電纜豎井內，且適用于潮濕場所。

電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)(de)組成(cheng)結(jie)構(gou)(gou)(gou)(gou)：絕(jue)緣(yuan)層(ceng)是(shi)包覆在(zai)(zai)導(dao)(dao)(dao)線(xian)(xian)外(wai)圍四周，起著(zhu)電(dian)(dian)(dian)(dian)氣絕(jue)緣(yuan)作(zuo)用(yong)的(de)(de)(de)(de)(de)構(gou)(gou)(gou)(gou)件(jian)，即能確(que)保(bao)傳輸(shu)(shu)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)流或(huo)電(dian)(dian)(dian)(dian)磁波、光(guang)波只沿(yan)著(zhu)導(dao)(dao)(dao)線(xian)(xian)行進而(er)不流向外(wai)面(mian)，導(dao)(dao)(dao)體(ti)上具(ju)有(you)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)位(wei)能被隔絕(jue)，既(ji)要保(bao)證導(dao)(dao)(dao)線(xian)(xian)的(de)(de)(de)(de)(de)正常傳輸(shu)(shu)功能，又要確(que)保(bao)外(wai)界物體(ti)和人身的(de)(de)(de)(de)(de)安全。然后(hou)是(shi)填(tian)(tian)充結(jie)構(gou)(gou)(gou)(gou)，很多電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)產(chan)品是(shi)多芯(xin)的(de)(de)(de)(de)(de)，將(jiang)這(zhe)些(xie)絕(jue)緣(yuan)線(xian)(xian)芯(xin)或(huo)線(xian)(xian)對成(cheng)纜(lan)(lan)后(hou)，一是(shi)外(wai)形不圓整(zheng)，二是(shi)絕(jue)緣(yuan)線(xian)(xian)芯(xin)間(jian)留有(you)很大空隙，因此必須(xu)在(zai)(zai)成(cheng)纜(lan)(lan)時加入填(tian)(tian)充結(jie)構(gou)(gou)(gou)(gou)。屏蔽是(shi)一種將(jiang)電(dian)(dian)(dian)(dian)纜(lan)(lan)產(chan)品中(zhong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)磁場(chang)與外(wai)界的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)磁場(chang)進行隔離的(de)(de)(de)(de)(de)構(gou)(gou)(gou)(gou)件(jian)；而(er)護層(ceng)是(shi)當電(dian)(dian)(dian)(dian)線(xian)(xian)電(dian)(dian)(dian)(dian)纜(lan)(lan)產(chan)品安裝(zhuang)運行在(zai)(zai)各種不同(tong)的(de)(de)(de)(de)(de)環境中(zhong)時，必須(xu)具(ju)有(you)對產(chan)品整(zheng)體(ti)，特別是(shi)對絕(jue)緣(yuan)層(ceng)起保(bao)護作(zuo)用(yong)的(de)(de)(de)(de)(de)構(gou)(gou)(gou)(gou)件(jian)。還有(you)抗(kang)拉元件(jian)，典(dian)型的(de)(de)(de)(de)(de)結(jie)構(gou)(gou)(gou)(gou)是(shi)鋼芯(xin)鋁絞線(xian)(xian)、光(guang)纖(xian)光(guang)纜(lan)(lan)電(dian)(dian)(dian)(dian)纜(lan)(lan)等。