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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)泳(yong)(yong)(yong)(yong)漆(qi),也(ye)叫電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)涂(tu)料,現在還(huan)有很多人沿襲“電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi)”的稱謂,而不用(yong)“電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)涂(tu)料”。跟著慣例噴(pen)涂(tu)的缺點不斷(duan)閃現,電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)開始變得越來越廣泛. 電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi)也(ye)開始不斷(duan)更新(xin)換(huan)代,從陽極(ji)電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi)到陰極(ji)電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi),從單組(zu)分電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi)到雙(shuang)組(zu)分電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi),電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)漆(qi)的打(da)(da)開也(ye)促(cu)進了電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)涂(tu)裝(zhuang)的打(da)(da)開,使更加多的商品不再運(yun)用(yong)噴(pen)涂(tu)技(ji)能而是(shi)運(yun)用(yong)電(dian)(dian)(dian)泳(yong)(yong)(yong)(yong)。
  電(dian)泳涂(tu)(tu)(tu)料(liao)作(zuo)為一類新式(shi)的(de)低污染、省動(dong)力、省本錢、起作(zuo)維護和(he)防腐蝕性(xing)(xing)的(de)涂(tu)(tu)(tu)料(liao),具有涂(tu)(tu)(tu)膜平坦,耐水(shui)性(xing)(xing)和(he)耐化學性(xing)(xing)好等特征,簡略(lve)結束涂(tu)(tu)(tu)裝工(gong)(gong)業(ye)的(de)機械化和(he)主(zhu)動(dong)化,適合形狀(zhuang)雜亂,有邊緣鋒芒(mang)、孔穴工(gong)(gong)件涂(tu)(tu)(tu)裝,現在被(bei)很多(duo)運(yun)用(yong)(yong)于轎(jiao)車(che)、主(zhu)動(dong)車(che)、機電(dian)、家(jia)電(dian)等五金(jin)件的(de)涂(tu)(tu)(tu)裝。電(dian)泳涂(tu)(tu)(tu)料(liao)及涂(tu)(tu)(tu)裝法(fa)在19世紀70年代后取得工(gong)(gong)業(ye)運(yun)用(yong)(yong),選用(yong)(yong)電(dian)泳涂(tu)(tu)(tu)料(liao)能夠(gou)進行(xing)全封閉循環(huan)系統(tong)作(zuo)業(ye),涂(tu)(tu)(tu)料(liao)98%分配運(yun)用(yong)(yong)。電(dian)泳涂(tu)(tu)(tu)料(liao)以水(shui)溶性(xing)(xing)或水(shui)松懈性(xing)(xing)離子型聚合物為成膜物,被(bei)涂(tu)(tu)(tu)工(gong)(gong)件能夠(gou)是陽(yang)極(ji)也(ye)能夠(gou)作(zuo)為陰極(ji)。

  涂(tu)料(liao)按(an)施(shi)工辦法可分為噴漆、浸漆,電泳(yong)漆、自泳(yong)涂(tu)料(liao)及烘(hong)漆等(deng)。其間電泳(yong)漆、自泳(yong)涂(tu)料(liao)是現在運用較搶先的(de)兩種。

  電泳涂漆具有下(xia)述特征:

  1、電泳涂漆取(qu)得的漆膜質(zhi)量(liang)(liang)大致與通(tong)電量(liang)(liang)成正(zheng)比,因此可借增減電量(liang)(liang)來調整涂膜堆積量(liang)(liang);

  2、電(dian)泳涂漆(qi)使形狀雜亂(luan)的被涂覆物的銳邊、電(dian)焊(han)焊(han)縫(feng)等縫(feng)隙中、箱形體的表里(li)外(wai)表都可取得(de)(de)對比均勻(yun)的漆(qi)膜,防腐功(gong)用取得(de)(de)明顯改進;

  3、電泳漆膜烘(hong)(hong)(hong)干(gan)(gan)(gan)前含水(shui)率已很低(di),它不(bu)溶于(yu)水(shui),不(bu)活動,不(bu)易發(fa)作(zuo)垂滴(di)、流(liu)痕、滯痕等(deng)漆膜害處,也不(bu)會在烘(hong)(hong)(hong)干(gan)(gan)(gan)中發(fa)作(zuo)像浸涂漆膜烘(hong)(hong)(hong)干(gan)(gan)(gan)時(shi)(箱形件或管件內部)常常發(fa)作(zuo)的溶劑氣洗景(jing)象(xiang),還可(ke)明顯縮(suo)短(duan)烘(hong)(hong)(hong)干(gan)(gan)(gan)前使(shi)水(shui)分(fen)蒸騰的預(yu)干(gan)(gan)(gan)時(shi)刻;

  4、因(yin)為帶負電(dian)(dian)的(de)高分子粒子在(zai)電(dian)(dian)場(chang)效果下定向堆積,因(yin)此電(dian)(dian)泳漆膜的(de)耐(nai)水功用(yong)極好,附著力(li)也比選用(yong)其他施工辦法的(de)高;

  5、電泳漆(qi)漆(qi)所(suo)用(yong)漆(qi)液濃度低、粘(zhan)度小(xiao),故因浸漬(zi)效果黏附于(yu)被涂物(wu)而帶(dai)出的漆(qi)較少,特別是超濾技能運用(yong)于(yu)電泳涂漆(qi)后,漆(qi)的運用(yong)率乃至可高(gao)達100%;

  6、與(yu)通常(chang)水性漆施工一樣(yang),電泳涂漆克服了發作(zuo)火(huo)災及(ji)苯中毒的疑(yi)問。

  自泳涂(tu)料(liao)又稱主動堆積(ji)涂(tu)料(liao),18世紀60年代由(you)英(ying)國Bdfjk公司創造并于(yu)60年代中期(qi)運用于(yu)工業涂(tu)裝(zhuang)。因(yin)為同歸于(yu)水性(xing)涂(tu)料(liao),故其涂(tu)裝(zhuang)辦(ban)法與電泳涂(tu)漆類似。鋼鐵(tie)外表只需除銹后即可涂(tu)裝(zhuang),不用進行(xing)磷化處理。

  自泳涂(tu)料通常是(shi)由(you)有機高分子的(de)(de)水性松懈液(ye)和(he)水性炭黑漿裝(zhuang)(zhuang)備而(er)成的(de)(de),在(zai)堆(dui)積(ji)時,在(zai)槽液(ye)中(zhong)參加主(zhu)動堆(dui)積(ji)的(de)(de)化(hua)(hua)學反(fan)響(xiang)資(zi)料,如Cdo、GY、H301等。涂(tu)裝(zhuang)(zhuang)時,將(jiang)涂(tu)裝(zhuang)(zhuang)工件(jian)浸漬于漆槽中(zhong),HF、FeF3腐蝕工件(jian)外(wai)(wai)表(biao),其間(jian)有些溶解的(de)(de)Fe和(he)樹脂反(fan)響(xiang),樹脂和(he)顏(yan)料分出(chu)堆(dui)積(ji)于金屬(shu)工件(jian)外(wai)(wai)表(biao),構成濕膜,其他未和(he)樹脂反(fan)響(xiang)的(de)(de)被槽液(ye)中(zhong)的(de)(de)氧化(hua)(hua)劑氧化(hua)(hua)構成OVE,穩定(ding)在(zai)槽液(ye)中(zhong)。