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)需稀料，施(shi)工(gong)(gong)對環(huan)境對人(ren)體無(wu)毒害(hai)；涂(tu)層外觀質量優異，附著力及機械(xie)強(qiang)度強(qiang)；噴(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(hen)多；不(bu)需底(di)漆；施(shi)工(gong)(gong)簡便，對工(gong)(gong)人(ren)技術要求低；成本低于噴(pen)漆工(gong)(gong)藝；有(you)些(xie)施(shi)工(gong)(gong)場合已經明確提出使用靜電(dian)噴(pen)塑(su)工(gong)(gong)藝處(chu)理；靜電(dian)噴(pen)粉噴(pen)涂(tu)過程中不(bu)會(hui)出現噴(pen)漆工(gong)(gong)藝中常見的流淌現象。

是(shi)利用(yong)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)現象(xiang)使(shi)粉(fen)(fen)(fen)末涂料(liao)吸(xi)附在(zai)電(dian)(dian)(dian)纜橋架上(shang)(shang)的(de)(de)。其(qi)過程是(shi)這(zhe)樣(yang)的(de)(de)：粉(fen)(fen)(fen)末涂料(liao)由(you)(you)供粉(fen)(fen)(fen)系統借壓(ya)縮空氣(qi)氣(qi)體送(song)入(ru)噴槍，在(zai)噴槍前端加有高壓(ya)靜(jing)電(dian)(dian)(dian)發生(sheng)器產(chan)生(sheng)的(de)(de)高壓(ya)，由(you)(you)于(yu)(yu)電(dian)(dian)(dian)暈放電(dian)(dian)(dian)，在(zai)其(qi)附近產(chan)生(sheng)密集的(de)(de)電(dian)(dian)(dian)荷，粉(fen)(fen)(fen)末由(you)(you)槍嘴噴出時，形(xing)成(cheng)帶電(dian)(dian)(dian)涂料(liao)粒(li)子，它受(shou)靜(jing)電(dian)(dian)(dian)力(li)的(de)(de)作(zuo)用(yong)，被吸(xi)到與其(qi)相反的(de)(de)工(gong)件上(shang)(shang)去(qu)，隨(sui)著噴上(shang)(shang)的(de)(de)粉(fen)(fen)(fen)末增多，電(dian)(dian)(dian)荷積聚也越多，當達(da)到一定厚度(du)時，由(you)(you)于(yu)(yu)產(chan)生(sheng)靜(jing)電(dian)(dian)(dian)排斥作(zuo)用(yong)，便不繼續吸(xi)附，從而使(shi)整(zheng)個工(gong)件獲得一定厚度(du)的(de)(de)粉(fen)(fen)(fen)末涂層，然后(hou)經(jing)過熱使(shi)粉(fen)(fen)(fen)末熔融、流平、固(gu)化，即在(zai)工(gong)件表面(mian)形(xing)成(cheng)堅(jian)硬的(de)(de)涂膜。