噴塑橋架

噴塑電纜橋架是將塑料粉末噴涂在電纜橋架上的一種表面處理方法。

不需稀料，施工(gong)(gong)對環境對人體無毒(du)害(hai)；涂(tu)層(ceng)外(wai)觀質量優異，附著力及機械強(qiang)度強(qiang)；噴(pen)(pen)涂(tu)施工(gong)(gong)固化時間短；涂(tu)層(ceng)耐腐耐磨能(neng)力高出很多；不需底漆(qi)；施工(gong)(gong)簡便，對工(gong)(gong)人技術要求低；成本(ben)低于(yu)噴(pen)(pen)漆(qi)工(gong)(gong)藝；有(you)些(xie)施工(gong)(gong)場合已經明確(que)提出使用靜電(dian)噴(pen)(pen)塑工(gong)(gong)藝處理；靜電(dian)噴(pen)(pen)粉噴(pen)(pen)涂(tu)過程中不會出現(xian)噴(pen)(pen)漆(qi)工(gong)(gong)藝中常見的流淌(tang)現(xian)象。

是(shi)利用(yong)電(dian)(dian)暈放電(dian)(dian)現象使粉末(mo)涂(tu)料吸(xi)附(fu)在(zai)(zai)(zai)電(dian)(dian)纜橋架上的。其(qi)過程是(shi)這(zhe)樣(yang)的：粉末(mo)涂(tu)料由供粉系(xi)統借壓(ya)(ya)縮空氣氣體(ti)送(song)入噴(pen)(pen)槍(qiang)(qiang)，在(zai)(zai)(zai)噴(pen)(pen)槍(qiang)(qiang)前端加有高(gao)壓(ya)(ya)靜電(dian)(dian)發生器產(chan)生的高(gao)壓(ya)(ya)，由于(yu)電(dian)(dian)暈放電(dian)(dian)，在(zai)(zai)(zai)其(qi)附(fu)近產(chan)生密(mi)集的電(dian)(dian)荷，粉末(mo)由槍(qiang)(qiang)嘴(zui)噴(pen)(pen)出時，形成帶電(dian)(dian)涂(tu)料粒子，它受靜電(dian)(dian)力的作用(yong)，被吸(xi)到與其(qi)相反的工(gong)件(jian)上去，隨著(zhu)噴(pen)(pen)上的粉末(mo)增多(duo)，電(dian)(dian)荷積聚也越多(duo)，當達到一定厚度時，由于(yu)產(chan)生靜電(dian)(dian)排斥作用(yong)，便(bian)不繼續吸(xi)附(fu)，從而使整個(ge)工(gong)件(jian)獲(huo)得一定厚度的粉末(mo)涂(tu)層，然后經(jing)過熱(re)使粉末(mo)熔融、流平、固(gu)化，即在(zai)(zai)(zai)工(gong)件(jian)表面形成堅硬的涂(tu)膜。