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電泳涂裝基本原理是什么?

文章來(lai)源 : 山東(dong)電泳涂(tu)裝,青島電泳涂(tu)裝,濰(wei)坊電泳涂(tu)裝 發布時間 : 2015-11-21 瀏覽量:
電泳涂(tu)裝基本原理:
  山東(dong)電泳涂裝被廣泛用于人們的生活中,在汽車、建材、五金、家電等行業中廣泛可見。電泳涂裝是運用在外部增加電場,讓漂浮在電泳溶液里面的顏色原料以及樹脂等顆粒物質,定向遷移并沉積于電極之一的基底表層的涂裝方式。具有水溶性、易于自動化控制等特點。山(shan)東電泳涂裝屬于涂裝,利用電流沉積漆膜,其工作原理為“異極相吸”。
  它是一個很(hen)復(fu)雜(za)的電化學反應(ying),其中(zhong)包括:電解、電泳、電沉積、電滲四個同時進(jin)行的過(guo)程。

  1.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解反(fan)(fan)應(ying):當(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流通過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)質水溶液時,水便(bian)發(fa)生電(dian)(dian)(dian)(dian)(dian)(dian)(dian)解反(fan)(fan)應(ying),在(zai)(zai)陽極(ji)放(fang)出氫氣,陰極(ji)放(fang)出氧(yang)氣,所以在(zai)(zai)涂裝過(guo)程(cheng)中應(ying)盡量降低電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓并(bing)防(fang)止(zhi)其它雜質離子混合(he)漆液中;2電(dian)(dian)(dian)(dian)(dian)(dian)(dian)泳(yong)反(fan)(fan)應(ying):在(zai)(zai)導電(dian)(dian)(dian)(dian)(dian)(dian)(dian)媒(mei)介物質里面,攜(xie)帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷的(de)(de)膠體微(wei)(wei)粒(li)(li)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)場的(de)(de)推動之下往(wang)相(xiang)反(fan)(fan)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)轉移(yi)的(de)(de)現象(xiang)。例如陰極(ji)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)泳(yong)的(de)(de)過(guo)程(cheng)中攜(xie)帶正電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷的(de)(de)膠體微(wei)(wei)粒(li)(li)夾帶和粘附顏料(liao)微(wei)(wei)粒(li)(li),由(you)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)泳(yong)流程(cheng)轉移(yi)到陰極(ji)。;3.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)沉積(ji)(ji)反(fan)(fan)應(ying):帶電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)聚合(he)物分別在(zai)(zai)陰極(ji)或(huo)陽極(ji)沉積(ji)(ji)的(de)(de)過(guo)程(cheng),這(zhe)是一種(zhong)漆微(wei)(wei)粒(li)(li)在(zai)(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)上的(de)(de)沉淀(dian)累積(ji)(ji)現象(xiang);4.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)滲反(fan)(fan)應(ying):沉積(ji)(ji)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)泳(yong)涂膜(mo)收縮、脫去溶劑和水,形(xing)成均勻致(zhi)密的(de)(de)濕膜(mo)。

 


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