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)對(dui)(dui)環境(jing)對(dui)(dui)人體無毒害；涂(tu)(tu)(tu)層外觀質量優異，附著力(li)(li)及(ji)機械強度強；噴(pen)涂(tu)(tu)(tu)施工(gong)固(gu)化時(shi)間短；涂(tu)(tu)(tu)層耐(nai)腐耐(nai)磨能力(li)(li)高出很多(duo)；不需底漆；施工(gong)簡便，對(dui)(dui)工(gong)人技術要求低；成(cheng)本低于噴(pen)漆工(gong)藝；有些施工(gong)場合已經明確提出使用靜電(dian)噴(pen)塑工(gong)藝處理；靜電(dian)噴(pen)粉(fen)噴(pen)涂(tu)(tu)(tu)過(guo)程(cheng)中不會(hui)出現噴(pen)漆工(gong)藝中常見(jian)的流淌現象。

是(shi)利(li)用電(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)現象使(shi)粉末(mo)(mo)(mo)涂料(liao)(liao)吸附在(zai)電(dian)(dian)(dian)纜(lan)橋架上(shang)的。其過(guo)程是(shi)這樣(yang)的：粉末(mo)(mo)(mo)涂料(liao)(liao)由(you)供粉系統(tong)借壓縮空氣氣體送入噴槍(qiang)，在(zai)噴槍(qiang)前端加(jia)有高壓靜電(dian)(dian)(dian)發(fa)生器(qi)產(chan)生的高壓，由(you)于電(dian)(dian)(dian)暈(yun)放電(dian)(dian)(dian)，在(zai)其附近產(chan)生密集的電(dian)(dian)(dian)荷，粉末(mo)(mo)(mo)由(you)槍(qiang)嘴(zui)噴出(chu)時(shi)，形成帶電(dian)(dian)(dian)涂料(liao)(liao)粒子(zi)，它受靜電(dian)(dian)(dian)力的作用，被吸到與其相(xiang)反的工件上(shang)去，隨著噴上(shang)的粉末(mo)(mo)(mo)增多(duo)，電(dian)(dian)(dian)荷積(ji)聚也越多(duo)，當達到一(yi)定厚(hou)度(du)時(shi)，由(you)于產(chan)生靜電(dian)(dian)(dian)排(pai)斥作用，便不繼續(xu)吸附，從而使(shi)整個工件獲得一(yi)定厚(hou)度(du)的粉末(mo)(mo)(mo)涂層(ceng)，然后經過(guo)熱使(shi)粉末(mo)(mo)(mo)熔融、流平、固化，即在(zai)工件表面形成堅(jian)硬的涂膜。