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簡介電泳漆、自泳涂料的運用及其施工辦法

2015-12-05 20:16      點擊:
 電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi),也叫電(dian)(dian)(dian)(dian)泳(yong)(yong)涂(tu)(tu)料,現(xian)在還有很多人(ren)沿襲(xi)“電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi)”的(de)稱(cheng)謂,而(er)不(bu)用(yong)“電(dian)(dian)(dian)(dian)泳(yong)(yong)涂(tu)(tu)料”。跟著慣例噴(pen)涂(tu)(tu)的(de)缺點不(bu)斷閃現(xian),電(dian)(dian)(dian)(dian)泳(yong)(yong)開(kai)始(shi)變得越(yue)來越(yue)廣泛. 電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi)也開(kai)始(shi)不(bu)斷更新換代,從陽極電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi)到陰極電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi),從單組分(fen)(fen)電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi)到雙組分(fen)(fen)電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi),電(dian)(dian)(dian)(dian)泳(yong)(yong)漆(qi)(qi)的(de)打開(kai)也促進了(le)電(dian)(dian)(dian)(dian)泳(yong)(yong)涂(tu)(tu)裝的(de)打開(kai),使更加多的(de)商品不(bu)再運用(yong)噴(pen)涂(tu)(tu)技能而(er)是(shi)運用(yong)電(dian)(dian)(dian)(dian)泳(yong)(yong)。
  電(dian)(dian)泳(yong)涂(tu)(tu)(tu)料(liao)作(zuo)為一(yi)類(lei)新式的(de)(de)低(di)污染、省動力(li)、省本錢、起作(zuo)維護和防腐蝕性(xing)的(de)(de)涂(tu)(tu)(tu)料(liao),具有涂(tu)(tu)(tu)膜(mo)平坦,耐水性(xing)和耐化學性(xing)好(hao)等特征,簡略結束涂(tu)(tu)(tu)裝工業(ye)的(de)(de)機(ji)械化和主(zhu)動化,適合(he)形狀雜亂,有邊緣鋒(feng)芒、孔穴(xue)工件(jian)涂(tu)(tu)(tu)裝,現在被(bei)很多(duo)運用于轎車(che)(che)、主(zhu)動車(che)(che)、機(ji)電(dian)(dian)、家電(dian)(dian)等五金(jin)件(jian)的(de)(de)涂(tu)(tu)(tu)裝。電(dian)(dian)泳(yong)涂(tu)(tu)(tu)料(liao)及涂(tu)(tu)(tu)裝法在19世紀70年代后(hou)取得工業(ye)運用,選(xuan)用電(dian)(dian)泳(yong)涂(tu)(tu)(tu)料(liao)能夠(gou)進行全封閉(bi)循環系統作(zuo)業(ye),涂(tu)(tu)(tu)料(liao)98%分配運用。電(dian)(dian)泳(yong)涂(tu)(tu)(tu)料(liao)以水溶性(xing)或水松懈性(xing)離子(zi)型聚(ju)合(he)物(wu)(wu)為成(cheng)膜(mo)物(wu)(wu),被(bei)涂(tu)(tu)(tu)工件(jian)能夠(gou)是陽極(ji)也能夠(gou)作(zuo)為陰極(ji)。

  涂(tu)料(liao)按(an)施工辦法可分為噴漆、浸漆,電泳漆、自泳涂(tu)料(liao)及烘漆等。其間電泳漆、自泳涂(tu)料(liao)是現在(zai)運(yun)用較搶先(xian)的兩種。

  電泳涂漆(qi)具有下(xia)述特征:

  1、電(dian)泳涂(tu)漆(qi)取得的(de)漆(qi)膜質(zhi)量(liang)大致與(yu)通電(dian)量(liang)成(cheng)正比,因此可借增減電(dian)量(liang)來調整涂(tu)膜堆積量(liang);

  2、電(dian)泳涂漆使形狀雜(za)亂的(de)被涂覆物的(de)銳(rui)邊、電(dian)焊焊縫等縫隙中(zhong)、箱(xiang)形體的(de)表里外(wai)表都可(ke)取得對比均(jun)勻的(de)漆膜,防(fang)腐功用(yong)取得明(ming)顯改進;

  3、電泳漆膜(mo)烘(hong)(hong)干(gan)(gan)前含(han)水(shui)率已(yi)很低,它不(bu)溶于水(shui),不(bu)活動(dong),不(bu)易發(fa)作垂滴、流痕、滯痕等(deng)漆膜(mo)害處,也(ye)不(bu)會(hui)在烘(hong)(hong)干(gan)(gan)中發(fa)作像浸涂(tu)漆膜(mo)烘(hong)(hong)干(gan)(gan)時(箱形件或管件內部)常常發(fa)作的(de)溶劑氣洗景象,還可明顯縮短烘(hong)(hong)干(gan)(gan)前使水(shui)分蒸騰的(de)預干(gan)(gan)時刻;

  4、因為帶(dai)負電(dian)的(de)高分子粒子在電(dian)場(chang)效果下定向堆積(ji),因此電(dian)泳漆(qi)膜(mo)的(de)耐水功用極(ji)好,附著(zhu)力也(ye)比(bi)選(xuan)用其他施工(gong)辦(ban)法(fa)的(de)高;

  5、電泳(yong)漆(qi)(qi)漆(qi)(qi)所用(yong)漆(qi)(qi)液濃度(du)低、粘度(du)小,故因浸漬(zi)效果(guo)黏(nian)附于被涂物(wu)而帶出的(de)漆(qi)(qi)較少,特(te)別是超濾技能運用(yong)于電泳(yong)涂漆(qi)(qi)后,漆(qi)(qi)的(de)運用(yong)率乃至可高達100%;

  6、與通常(chang)水性漆施(shi)工(gong)一樣,電泳(yong)涂(tu)漆克服(fu)了發(fa)作火災(zai)及苯(ben)中毒的疑問。

  自(zi)泳(yong)(yong)涂(tu)料又稱主動堆(dui)積涂(tu)料,18世紀(ji)60年(nian)代由英國(guo)Bdfjk公司(si)創造并于(yu)60年(nian)代中期運用(yong)于(yu)工業涂(tu)裝(zhuang)。因為同歸于(yu)水性(xing)涂(tu)料,故其涂(tu)裝(zhuang)辦(ban)法與(yu)電泳(yong)(yong)涂(tu)漆類(lei)似。鋼鐵(tie)外表只需除銹(xiu)后(hou)即(ji)可(ke)涂(tu)裝(zhuang),不用(yong)進行磷化處理。

  自泳涂料通常是由有(you)機高分子的水性(xing)松懈液和(he)水性(xing)炭黑(hei)漿裝備而成(cheng)的,在(zai)堆積時,在(zai)槽液中參加主動堆積的化學(xue)反響資料,如(ru)Cdo、GY、H301等。涂裝時,將涂裝工件浸漬于漆槽中,HF、FeF3腐(fu)蝕工件外(wai)表,其間(jian)有(you)些溶解的Fe和(he)樹脂(zhi)反響,樹脂(zhi)和(he)顏料分出堆積于金屬工件外(wai)表,構(gou)(gou)成(cheng)濕膜,其他未和(he)樹脂(zhi)反響的被(bei)槽液中的氧化劑氧化構(gou)(gou)成(cheng)OVE,穩定在(zai)槽液中。