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)需(xu)(xu)稀料(liao)，施(shi)工(gong)(gong)對環境對人體無毒害；涂(tu)層外觀質量優異，附著力及機械強度強；噴(pen)(pen)(pen)涂(tu)施(shi)工(gong)(gong)固化時間短；涂(tu)層耐(nai)腐耐(nai)磨(mo)能力高出很多；不(bu)需(xu)(xu)底(di)漆(qi)；施(shi)工(gong)(gong)簡便，對工(gong)(gong)人技(ji)術要求(qiu)低；成本低于噴(pen)(pen)(pen)漆(qi)工(gong)(gong)藝；有(you)些施(shi)工(gong)(gong)場合已經明確提出使用靜電噴(pen)(pen)(pen)塑工(gong)(gong)藝處理(li)；靜電噴(pen)(pen)(pen)粉噴(pen)(pen)(pen)涂(tu)過程中(zhong)不(bu)會出現(xian)噴(pen)(pen)(pen)漆(qi)工(gong)(gong)藝中(zhong)常見的流淌現(xian)象。

是(shi)利用電(dian)(dian)(dian)暈放電(dian)(dian)(dian)現象使(shi)(shi)粉(fen)(fen)末(mo)(mo)涂料吸(xi)附在電(dian)(dian)(dian)纜(lan)橋架上的(de)(de)(de)(de)(de)(de)。其(qi)(qi)過(guo)程是(shi)這樣的(de)(de)(de)(de)(de)(de)：粉(fen)(fen)末(mo)(mo)涂料由供(gong)粉(fen)(fen)系(xi)統借壓(ya)縮空氣氣體(ti)送入噴槍(qiang)，在噴槍(qiang)前(qian)端加(jia)有高壓(ya)靜(jing)電(dian)(dian)(dian)發生(sheng)(sheng)器產生(sheng)(sheng)的(de)(de)(de)(de)(de)(de)高壓(ya)，由于電(dian)(dian)(dian)暈放電(dian)(dian)(dian)，在其(qi)(qi)附近產生(sheng)(sheng)密集的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)荷(he)，粉(fen)(fen)末(mo)(mo)由槍(qiang)嘴噴出時(shi)，形成帶電(dian)(dian)(dian)涂料粒子，它受靜(jing)電(dian)(dian)(dian)力(li)的(de)(de)(de)(de)(de)(de)作用，被吸(xi)到與其(qi)(qi)相反(fan)的(de)(de)(de)(de)(de)(de)工件上去，隨著(zhu)噴上的(de)(de)(de)(de)(de)(de)粉(fen)(fen)末(mo)(mo)增(zeng)多，電(dian)(dian)(dian)荷(he)積聚也越多，當達到一定厚(hou)度時(shi)，由于產生(sheng)(sheng)靜(jing)電(dian)(dian)(dian)排(pai)斥作用，便不(bu)繼續吸(xi)附，從而使(shi)(shi)整個工件獲得一定厚(hou)度的(de)(de)(de)(de)(de)(de)粉(fen)(fen)末(mo)(mo)涂層，然后(hou)經過(guo)熱使(shi)(shi)粉(fen)(fen)末(mo)(mo)熔融、流平、固化，即在工件表面形成堅(jian)硬的(de)(de)(de)(de)(de)(de)涂膜(mo)。