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(bu)(bu)需(xu)稀料，施工(gong)(gong)對(dui)環境對(dui)人體無毒害；涂(tu)層(ceng)外觀質量(liang)優異，附著力及(ji)機械(xie)強(qiang)度強(qiang)；噴(pen)涂(tu)施工(gong)(gong)固化時間短；涂(tu)層(ceng)耐(nai)腐耐(nai)磨能力高出(chu)(chu)很多；不(bu)(bu)需(xu)底漆(qi)(qi)；施工(gong)(gong)簡便，對(dui)工(gong)(gong)人技術(shu)要(yao)求低；成本低于噴(pen)漆(qi)(qi)工(gong)(gong)藝(yi)；有些(xie)施工(gong)(gong)場(chang)合已經明確提出(chu)(chu)使用靜電噴(pen)塑工(gong)(gong)藝(yi)處理；靜電噴(pen)粉噴(pen)涂(tu)過程中(zhong)不(bu)(bu)會(hui)出(chu)(chu)現(xian)噴(pen)漆(qi)(qi)工(gong)(gong)藝(yi)中(zhong)常(chang)見的流淌現(xian)象。

是(shi)利(li)用(yong)電(dian)(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)(dian)現象使(shi)粉(fen)(fen)末涂料(liao)(liao)吸(xi)附在(zai)電(dian)(dian)(dian)(dian)纜(lan)橋架上的(de)。其(qi)(qi)過(guo)程是(shi)這樣的(de)：粉(fen)(fen)末涂料(liao)(liao)由(you)供粉(fen)(fen)系統借壓縮空氣(qi)(qi)氣(qi)(qi)體送入(ru)噴槍，在(zai)噴槍前端加有(you)高壓靜(jing)(jing)電(dian)(dian)(dian)(dian)發生器產(chan)生的(de)高壓，由(you)于電(dian)(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)(dian)，在(zai)其(qi)(qi)附近產(chan)生密集的(de)電(dian)(dian)(dian)(dian)荷，粉(fen)(fen)末由(you)槍嘴噴出時(shi)，形成(cheng)帶電(dian)(dian)(dian)(dian)涂料(liao)(liao)粒子，它受(shou)靜(jing)(jing)電(dian)(dian)(dian)(dian)力的(de)作用(yong)，被吸(xi)到(dao)與其(qi)(qi)相反的(de)工件(jian)上去，隨著噴上的(de)粉(fen)(fen)末增多，電(dian)(dian)(dian)(dian)荷積聚也(ye)越多，當達到(dao)一定厚度(du)時(shi)，由(you)于產(chan)生靜(jing)(jing)電(dian)(dian)(dian)(dian)排(pai)斥作用(yong)，便不繼續(xu)吸(xi)附，從而使(shi)整個工件(jian)獲得(de)一定厚度(du)的(de)粉(fen)(fen)末涂層，然(ran)后(hou)經(jing)過(guo)熱使(shi)粉(fen)(fen)末熔融、流平、固化(hua)，即在(zai)工件(jian)表(biao)面形成(cheng)堅硬的(de)涂膜。