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)對(dui)環境對(dui)人體無毒害；涂(tu)層(ceng)外(wai)觀質量優異，附著力及機械強度強；噴(pen)(pen)涂(tu)施工(gong)(gong)固化(hua)時間短；涂(tu)層(ceng)耐腐耐磨(mo)能力高出(chu)很多；不(bu)(bu)需底漆(qi)(qi)；施工(gong)(gong)簡(jian)便，對(dui)工(gong)(gong)人技術要求低(di)；成本低(di)于噴(pen)(pen)漆(qi)(qi)工(gong)(gong)藝；有些施工(gong)(gong)場合已經明確提出(chu)使(shi)用靜電(dian)噴(pen)(pen)塑工(gong)(gong)藝處理；靜電(dian)噴(pen)(pen)粉(fen)噴(pen)(pen)涂(tu)過程(cheng)中不(bu)(bu)會出(chu)現噴(pen)(pen)漆(qi)(qi)工(gong)(gong)藝中常見(jian)的流淌(tang)現象。

是利(li)用(yong)(yong)電(dian)暈放電(dian)現象使粉末(mo)涂料吸附在(zai)電(dian)纜橋架上(shang)的(de)(de)。其(qi)過程是這樣(yang)的(de)(de)：粉末(mo)涂料由(you)(you)(you)供粉系統借壓(ya)縮空氣氣體送入噴槍(qiang)(qiang)(qiang)，在(zai)噴槍(qiang)(qiang)(qiang)前端(duan)加有(you)高(gao)壓(ya)靜電(dian)發生器(qi)產(chan)生的(de)(de)高(gao)壓(ya)，由(you)(you)(you)于(yu)電(dian)暈放電(dian)，在(zai)其(qi)附近產(chan)生密(mi)集(ji)的(de)(de)電(dian)荷(he)，粉末(mo)由(you)(you)(you)槍(qiang)(qiang)(qiang)嘴噴出時(shi)，形(xing)成帶電(dian)涂料粒子，它受靜電(dian)力的(de)(de)作用(yong)(yong)，被吸到與其(qi)相反的(de)(de)工(gong)件(jian)上(shang)去，隨(sui)著噴上(shang)的(de)(de)粉末(mo)增(zeng)多(duo)，電(dian)荷(he)積(ji)聚也越(yue)多(duo)，當(dang)達(da)到一定(ding)厚度時(shi)，由(you)(you)(you)于(yu)產(chan)生靜電(dian)排斥作用(yong)(yong)，便(bian)不繼續吸附，從而使整個工(gong)件(jian)獲得一定(ding)厚度的(de)(de)粉末(mo)涂層，然后(hou)經過熱(re)使粉末(mo)熔融、流平、固化，即在(zai)工(gong)件(jian)表面形(xing)成堅硬的(de)(de)涂膜。