處(chu)理流程:鋁材的去(qu)油去(qu)污→水洗(xi)→堿洗(xi)(脫脂)→水洗(xi)→酸洗(xi)→水洗(xi)→鉻(ge)化→水洗(xi)→純水洗(xi)氟碳(tan)噴涂流程:噴底漆→面漆→罩光漆→烘烤(180-250℃)→質檢

    多(duo)層(ceng)氟(fu)碳噴(pen)涂(tu)工藝以(yi)三次噴(pen)涂(tu)(簡稱三噴(pen)),噴(pen)底面漆(qi)(qi)、面漆(qi)(qi)及罩光漆(qi)(qi)和(he)二次噴(pen)涂(tu)(底漆(qi)(qi)、面漆(qi)(qi)).

    1.前(qian)處(chu)理的目的:在鋁合(he)金(jin)型(xing)材、板材進(jin)行氟碳噴涂(tu)前(qian),工件表(biao)(biao)面要經過(guo)去油去污及化學處(chu)理,以產生(sheng)鉻化膜,增加(jia)涂(tu)層和金(jin)屬表(biao)(biao)面結合(he)力和防氧化能力,有利于延長(chang)漆膜的使用年限.

    2.底漆涂(tu)層(ceng)(ceng):作為(wei)封(feng)閉底材的底漆涂(tu)層(ceng)(ceng),其作用在(zai)于提高涂(tu)層(ceng)(ceng)抗滲(shen)透(tou)能力(li),增強(qiang)(qiang)對底材的保護,穩(wen)定金屬(shu)表面(mian)層(ceng)(ceng),加強(qiang)(qiang)面(mian)漆與(yu)金屬(shu)表面(mian)的附著力(li),可以(yi)保證面(mian)漆涂(tu)層(ceng)(ceng)的顏色均勻性,漆層(ceng)(ceng)厚度一(yi)般為(wei)5-10微米.

    3.面(mian)漆(qi)(qi)涂(tu)層(ceng):面(mian)漆(qi)(qi)涂(tu)層(ceng)是氟碳(tan)噴涂(tu)層(ceng)關鍵的(de)一層(ceng),在(zai)于提(ti)供鋁(lv)材(cai)所(suo)需要(yao)的(de)裝飾顏色,使鋁(lv)材(cai)外觀(guan)達到(dao)設計要(yao)求,并且保(bao)護(hu)金(jin)屬表面(mian)不(bu)受外界環境大(da)氣(qi),酸雨,污染的(de)侵蝕,防止(zhi)紫外線(xian)穿透.大(da)大(da)增(zeng)強抗(kang)老化能(neng)力,面(mian)漆(qi)(qi)涂(tu)層(ceng)是氟碳(tan)噴涂(tu)中(zhong)最厚(hou)的(de)一層(ceng)漆(qi)(qi)層(ceng),漆(qi)(qi)層(ceng)厚(hou)度一般為23-30微米.

    4.罩(zhao)光漆(qi)涂層(ceng):罩(zhao)光漆(qi)涂層(ceng)也稱清(qing)漆(qi)涂層(ceng),主要(yao)目的(de)(de)是更有效(xiao)地增(zeng)強漆(qi)層(ceng)抗外界侵蝕能力(li),保護面漆(qi)涂層(ceng),增(zeng)加面漆(qi)色彩(cai)的(de)(de)金屬光澤,外觀更加顏(yan)色鮮明,光彩(cai)奪目,涂層(ceng)厚度(du)一(yi)般(ban)為(wei)(wei)5-10微米(mi).三氟碳噴(pen)涂層(ceng)總厚度(du)一(yi)般(ban)為(wei)(wei)40-60微米(mi),特殊需(xu)要(yao)的(de)(de)可以加厚.

    5.固化(hua)(hua)處(chu)理:三氟碳噴(pen)涂層一(yi)般需要二次固化(hua)(hua),鋁(lv)材進入(ru)固化(hua)(hua)爐處(chu)理,固化(hua)(hua)溫度(du)一(yi)般在180℃-250℃之間(jian),固化(hua)(hua)時間(jian)為15-25分鐘,不同氟碳涂料生產(chan)廠(chang)家,都會根(gen)據(ju)自己(ji)的(de)涂料,提供最佳的(de)溫度(du)和時間(jian).氟碳噴(pen)涂廠(chang)(鋦油廠(chang))也有的(de)根(gen)據(ju)自己(ji)經(jing)驗把三噴(pen)時的(de)兩(liang)次固化(hua)(hua)改為一(yi)次固化(hua)(hua).

    6.質(zhi)量(liang)檢(jian)(jian)驗(yan):質(zhi)量(liang)檢(jian)(jian)驗(yan)應按AAMA-605.02.90標(biao)準.嚴(yan)格的(de)質(zhi)量(liang)檢(jian)(jian)查(cha)才(cai)能保證(zheng)高質(zhi)量(liang)噴涂產品(pin).

    單層廣泛(fan)應(ying)用于建筑幕墻(qiang),其表面PVDF氟碳(tan)噴涂(tu)(tu)(tu)(tu)(tu)通(tong)常以噴涂(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)藝(yi)形成,也有通(tong)過輥(gun)涂(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)藝(yi)形成的.前者是先(xian)通(tong)過鈑金加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)把光(guang)鋁板加(jia)工(gong)(gong)(gong)成含加(jia)強筋和(he)掛耳的結構,然后進(jin)(jin)行(xing)PVDF氟碳(tan)噴涂(tu)(tu)(tu)(tu)(tu).而(er)輥(gun)涂(tu)(tu)(tu)(tu)(tu)板是先(xian)通(tong)過輥(gun)涂(tu)(tu)(tu)(tu)(tu)工(gong)(gong)(gong)藝(yi)在鋁板表面輥(gun)涂(tu)(tu)(tu)(tu)(tu)PVDF氟碳(tan)噴涂(tu)(tu)(tu)(tu)(tu),然后通(tong)過鈑金加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)把涂(tu)(tu)(tu)(tu)(tu)層板加(jia)工(gong)(gong)(gong)成一定結構.本文對(dui)噴涂(tu)(tu)(tu)(tu)(tu)板和(he)輥(gun)涂(tu)(tu)(tu)(tu)(tu)板在幕墻(qiang)中(zhong)應(ying)用和(he)性能上的差異進(jin)(jin)行(xing)比較分析.A