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)對環境對人體無毒害；涂層外(wai)觀質(zhi)量優異，附(fu)著力(li)(li)及(ji)機械(xie)強(qiang)度強(qiang)；噴(pen)(pen)涂施(shi)工(gong)固化時間短；涂層耐(nai)腐耐(nai)磨能力(li)(li)高出很多；不(bu)需底漆(qi)；施(shi)工(gong)簡便，對工(gong)人技術要(yao)求低(di)；成本低(di)于噴(pen)(pen)漆(qi)工(gong)藝；有些施(shi)工(gong)場合(he)已(yi)經(jing)明確提出使用靜(jing)(jing)電噴(pen)(pen)塑工(gong)藝處理(li)；靜(jing)(jing)電噴(pen)(pen)粉噴(pen)(pen)涂過程中不(bu)會出現噴(pen)(pen)漆(qi)工(gong)藝中常見(jian)的流淌(tang)現象。

是(shi)利用(yong)電(dian)(dian)(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)(dian)(dian)現象(xiang)使(shi)粉末(mo)(mo)涂(tu)(tu)料(liao)吸(xi)附在電(dian)(dian)(dian)(dian)(dian)纜(lan)橋(qiao)架上的。其過(guo)程是(shi)這(zhe)樣的：粉末(mo)(mo)涂(tu)(tu)料(liao)由供粉系統借(jie)壓縮空氣氣體送入噴(pen)(pen)槍(qiang)，在噴(pen)(pen)槍(qiang)前端加(jia)有(you)高壓靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)發(fa)生(sheng)(sheng)器產(chan)生(sheng)(sheng)的高壓，由于電(dian)(dian)(dian)(dian)(dian)暈(yun)放(fang)電(dian)(dian)(dian)(dian)(dian)，在其附近產(chan)生(sheng)(sheng)密集的電(dian)(dian)(dian)(dian)(dian)荷，粉末(mo)(mo)由槍(qiang)嘴噴(pen)(pen)出時，形成(cheng)帶電(dian)(dian)(dian)(dian)(dian)涂(tu)(tu)料(liao)粒子，它受靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)力的作用(yong)，被吸(xi)到與其相反的工(gong)件(jian)上去(qu)，隨著噴(pen)(pen)上的粉末(mo)(mo)增多，電(dian)(dian)(dian)(dian)(dian)荷積聚也(ye)越(yue)多，當達到一定(ding)厚度時，由于產(chan)生(sheng)(sheng)靜(jing)(jing)電(dian)(dian)(dian)(dian)(dian)排斥作用(yong)，便(bian)不繼續吸(xi)附，從而使(shi)整個(ge)工(gong)件(jian)獲得一定(ding)厚度的粉末(mo)(mo)涂(tu)(tu)層，然后經過(guo)熱使(shi)粉末(mo)(mo)熔融、流平、固化，即在工(gong)件(jian)表面(mian)形成(cheng)堅(jian)硬的涂(tu)(tu)膜。