硅橡膠（英文名稱：Silicone rubber），是(shi)通過(guo)控制(zhi)骨架(jia)的長度、有機基團的種類和骨架(jia)的交聯，可得(de)到的一(yi)種硅氧聚合物。而絕緣子就是(shi)硅橡膠(jiao)制(zhi)成的，下(xia)面(mian)小編給大家介紹一(yi)下(xia)硅橡膠(jiao)之絕緣子的作用吧。

　　高壓電(dian)線連接塔的(de)(de)一(yi)端掛了很(hen)多盤狀(zhuang)的(de)(de)絕緣體,它是為(wei)了增加爬電(dian)距離(li)的(de)(de),通常(chang)由(you)玻璃或陶瓷制(zhi)成,就叫(jiao)絕緣子。

　　為(wei)了防止浮塵等污穢在絕緣子表(biao)面附著(zhu),形成通路被絕緣子兩(liang)端電(dian)壓擊穿,即爬(pa)電(dian).故(gu)增(zeng)大表(biao)面距(ju)離,即爬(pa)距(ju),沿絕緣表(biao)面放電(dian)的距(ju)離即泄漏距(ju)離叫(jiao)爬(pa)距(ju).爬(pa)距(ju)=表(biao)面距(ju)離/系統最高電(dian)壓.根據污穢程度不(bu)同,重污穢地區一(yi)般采用爬(pa)距(ju)為(wei)31毫米/每千伏。

　　零值絕(jue)(jue)緣(yuan)子指的是在運行中絕(jue)(jue)緣(yuan)子兩端的電位(wei)分布(bu)接(jie)近零或(huo)等于零的絕(jue)(jue)緣(yuan)子。

　　零值(zhi)(zhi)或低(di)值(zhi)(zhi)絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi)的(de)影響：線(xian)(xian)路(lu)導線(xian)(xian)的(de)絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)依賴于絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi)串,由于制造缺陷或外界的(de)作(zuo)用,絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi)的(de)絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)性能會(hui)不斷劣化,當絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)電阻降低(di)或為(wei)零時稱為(wei)低(di)值(zhi)(zhi)或零值(zhi)(zhi)絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi).我們(men)曾對線(xian)(xian)路(lu)進行檢測,零值(zhi)(zhi)或低(di)值(zhi)(zhi)絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi)的(de)比例竟(jing)高達(da)9%左(zuo)右.這是(shi)本公司線(xian)(xian)路(lu)雷擊跳閘率高的(de)另一主(zhu)要原因。絕(jue)(jue)(jue)(jue)緣(yuan)(yuan)子(zi)(zi)(zi)是(shi)光滑(hua)的(de)，可以(yi)減少電線(xian)(xian)之(zhi)間的(de)容(rong)抗作(zuo)用，以(yi)減少電流的(de)流失。

    高(gao)(gao)溫(wen)(wen)(wen)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)顯(xian)著(zhu)的(de)(de)(de)(de)(de)特(te)征是高(gao)(gao)溫(wen)(wen)(wen)穩定性(xing)(xing)(xing)(xing)(xing)(xing)，雖然常溫(wen)(wen)(wen)下(xia)硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)強(qiang)度(du)僅是天然橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)或某些合成橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)一(yi)半，但在200℃以上的(de)(de)(de)(de)(de)高(gao)(gao)溫(wen)(wen)(wen)環境下(xia)，硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)仍能(neng)(neng)(neng)保持一(yi)定的(de)(de)(de)(de)(de)柔(rou)韌性(xing)(xing)(xing)(xing)(xing)(xing)、回彈性(xing)(xing)(xing)(xing)(xing)(xing)和(he)表(biao)面硬度(du)，且力學(xue)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)無(wu)明顯(xian)變化(hua)。（2）低(di)溫(wen)(wen)(wen)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)玻(bo)璃化(hua)溫(wen)(wen)(wen)度(du)一(yi)般為-70~-50℃，特(te)殊配方可達-100℃，表(biao)明其低(di)溫(wen)(wen)(wen)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)優異。這對航空、宇航工(gong)業(ye)的(de)(de)(de)(de)(de)意(yi)義重(zhong)大(da)。（3）耐(nai)(nai)候性(xing)(xing)(xing)(xing)(xing)(xing)硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)中Si-O-Si鍵對氧(yang)(yang)、臭氧(yang)(yang)及紫外線等十分穩定，在不加任何添加劑的(de)(de)(de)(de)(de)情況下(xia)，就(jiu)具(ju)有優良的(de)(de)(de)(de)(de)耐(nai)(nai)候性(xing)(xing)(xing)(xing)(xing)(xing)。（4）電(dian)氣(qi)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)具(ju)有優異的(de)(de)(de)(de)(de)絕緣性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)，耐(nai)(nai)電(dian)暈(yun)性(xing)(xing)(xing)(xing)(xing)(xing)和(he)耐(nai)(nai)電(dian)弧性(xing)(xing)(xing)(xing)(xing)(xing)也(ye)非(fei)(fei)常好。（5）物理機(ji)械性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)常溫(wen)(wen)(wen)下(xia)的(de)(de)(de)(de)(de)物理機(ji)械性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)比通(tong)用橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)差，但在150℃的(de)(de)(de)(de)(de)高(gao)(gao)溫(wen)(wen)(wen)和(he)-50℃的(de)(de)(de)(de)(de)低(di)溫(wen)(wen)(wen)下(xia)，其物理機(ji)械性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)優于通(tong)用橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)。（6）耐(nai)(nai)油及化(hua)學(xue)試(shi)劑性(xing)(xing)(xing)(xing)(xing)(xing)。普通(tong)硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)具(ju)有中等的(de)(de)(de)(de)(de)耐(nai)(nai)油、耐(nai)(nai)溶劑性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。（7）氣(qi)體(ti)透(tou)(tou)過(guo)性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng)(neng)。室溫(wen)(wen)(wen)下(xia)硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)對空氣(qi)、氮、氧(yang)(yang)、二氧(yang)(yang)化(hua)碳等氣(qi)體(ti)的(de)(de)(de)(de)(de)透(tou)(tou)氣(qi)性(xing)(xing)(xing)(xing)(xing)(xing)比天然橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)高(gao)(gao)出30-50倍。（8）生理惰性(xing)(xing)(xing)(xing)(xing)(xing)。硅(gui)(gui)橡(xiang)(xiang)(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)無(wu)毒，無(wu)味，無(wu)嗅(xiu)，與人(ren)體(ti)組織不粘(zhan)連，具(ju)有抗(kang)凝血作(zuo)(zuo)用，對肌體(ti)組織的(de)(de)(de)(de)(de)反應(ying)性(xing)(xing)(xing)(xing)(xing)(xing)非(fei)(fei)常少。特(te)別適合作(zuo)(zuo)為醫(yi)用材料。

    資訊(xun)來源于  供應(ying)商(shang)  揚州晨化新材料(liao)股份有限公(gong)司(si)