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(shi)(shi)工(gong)(gong)對環境對人體無毒害(hai)；涂(tu)層外觀質(zhi)量優異，附著力及機(ji)械強度強；噴(pen)(pen)涂(tu)施(shi)(shi)工(gong)(gong)固化時間短；涂(tu)層耐(nai)腐耐(nai)磨能力高出很多；不(bu)(bu)需底(di)漆；施(shi)(shi)工(gong)(gong)簡便，對工(gong)(gong)人技術要求低；成本低于(yu)噴(pen)(pen)漆工(gong)(gong)藝；有些施(shi)(shi)工(gong)(gong)場(chang)合已經(jing)明確提出使用靜(jing)電(dian)噴(pen)(pen)塑工(gong)(gong)藝處理；靜(jing)電(dian)噴(pen)(pen)粉噴(pen)(pen)涂(tu)過程中不(bu)(bu)會出現噴(pen)(pen)漆工(gong)(gong)藝中常(chang)見的流淌現象。

是(shi)利用(yong)電(dian)(dian)暈放電(dian)(dian)現象使粉(fen)(fen)(fen)末(mo)涂(tu)料(liao)吸附在(zai)電(dian)(dian)纜橋架上(shang)(shang)的(de)(de)(de)(de)(de)。其(qi)(qi)(qi)過程(cheng)是(shi)這樣的(de)(de)(de)(de)(de)：粉(fen)(fen)(fen)末(mo)涂(tu)料(liao)由(you)供粉(fen)(fen)(fen)系統借壓縮(suo)空氣(qi)氣(qi)體送入噴(pen)槍，在(zai)噴(pen)槍前端加有高壓靜電(dian)(dian)發(fa)生(sheng)器產生(sheng)的(de)(de)(de)(de)(de)高壓，由(you)于電(dian)(dian)暈放電(dian)(dian)，在(zai)其(qi)(qi)(qi)附近產生(sheng)密集(ji)的(de)(de)(de)(de)(de)電(dian)(dian)荷，粉(fen)(fen)(fen)末(mo)由(you)槍嘴(zui)噴(pen)出時，形成(cheng)帶(dai)電(dian)(dian)涂(tu)料(liao)粒子，它(ta)受靜電(dian)(dian)力(li)的(de)(de)(de)(de)(de)作用(yong)，被吸到(dao)與(yu)其(qi)(qi)(qi)相(xiang)反的(de)(de)(de)(de)(de)工(gong)件上(shang)(shang)去，隨著噴(pen)上(shang)(shang)的(de)(de)(de)(de)(de)粉(fen)(fen)(fen)末(mo)增多，電(dian)(dian)荷積聚也越多，當達(da)到(dao)一定厚(hou)度(du)時，由(you)于產生(sheng)靜電(dian)(dian)排斥作用(yong)，便不(bu)繼續吸附，從(cong)而使整個工(gong)件獲(huo)得一定厚(hou)度(du)的(de)(de)(de)(de)(de)粉(fen)(fen)(fen)末(mo)涂(tu)層(ceng)，然(ran)后經(jing)過熱使粉(fen)(fen)(fen)末(mo)熔融、流(liu)平、固(gu)化，即在(zai)工(gong)件表面形成(cheng)堅(jian)硬的(de)(de)(de)(de)(de)涂(tu)膜。