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)需稀料，施工(gong)(gong)(gong)(gong)對(dui)環境(jing)對(dui)人體無毒害；涂層外觀質量優異，附著力及(ji)機械強度強；噴(pen)(pen)涂施工(gong)(gong)(gong)(gong)固化時間短(duan)；涂層耐腐耐磨能力高(gao)出很多；不(bu)(bu)需底漆；施工(gong)(gong)(gong)(gong)簡便，對(dui)工(gong)(gong)(gong)(gong)人技術(shu)要求低；成本低于(yu)噴(pen)(pen)漆工(gong)(gong)(gong)(gong)藝(yi)；有些施工(gong)(gong)(gong)(gong)場(chang)合(he)已經明(ming)確提(ti)出使用靜電噴(pen)(pen)塑工(gong)(gong)(gong)(gong)藝(yi)處理；靜電噴(pen)(pen)粉噴(pen)(pen)涂過程中不(bu)(bu)會出現(xian)(xian)噴(pen)(pen)漆工(gong)(gong)(gong)(gong)藝(yi)中常(chang)見(jian)的流淌現(xian)(xian)象。

是(shi)利(li)用電(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)現象使(shi)粉(fen)(fen)末涂料(liao)吸(xi)附在(zai)電(dian)(dian)(dian)纜橋架(jia)上的(de)。其(qi)過(guo)程是(shi)這樣(yang)的(de)：粉(fen)(fen)末涂料(liao)由(you)供粉(fen)(fen)系統借(jie)壓縮空氣氣體送(song)入噴槍(qiang)，在(zai)噴槍(qiang)前端加有(you)高壓靜電(dian)(dian)(dian)發(fa)生(sheng)器產生(sheng)的(de)高壓，由(you)于電(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)，在(zai)其(qi)附近產生(sheng)密(mi)集的(de)電(dian)(dian)(dian)荷，粉(fen)(fen)末由(you)槍(qiang)嘴(zui)噴出(chu)時，形(xing)(xing)成(cheng)帶(dai)電(dian)(dian)(dian)涂料(liao)粒(li)子，它(ta)受靜電(dian)(dian)(dian)力(li)的(de)作用，被吸(xi)到與其(qi)相反(fan)的(de)工件(jian)上去(qu)，隨(sui)著噴上的(de)粉(fen)(fen)末增多，電(dian)(dian)(dian)荷積聚也(ye)越多，當達到一定厚度(du)(du)時，由(you)于產生(sheng)靜電(dian)(dian)(dian)排斥作用，便不繼續(xu)吸(xi)附，從(cong)而(er)使(shi)整個工件(jian)獲得一定厚度(du)(du)的(de)粉(fen)(fen)末涂層(ceng)，然后經(jing)過(guo)熱使(shi)粉(fen)(fen)末熔融、流(liu)平、固化，即在(zai)工件(jian)表面形(xing)(xing)成(cheng)堅硬的(de)涂膜。