一、彩色涂層鋼板是什么材質
涂層(ceng)鋼(gang)(gang)(gang)板(ban)(ban)是指在(zai)具有(you)良好深沖性能的低碳鋼(gang)(gang)(gang)板(ban)(ban)表(biao)面(mian)涂覆錫(xi)、鋅、鋁(lv)、鉻(ge)、鉛錫(xi)合金、有(you)機涂料和塑(su)料等的制品,彩色(se)涂層(ceng)鋼(gang)(gang)(gang)板(ban)(ban)屬于涂層(ceng)鋼(gang)(gang)(gang)板(ban)(ban)的一種,是在(zai)鍍鋅鋼(gang)(gang)(gang)板(ban)(ban)、鍍鋁(lv)鋼(gang)(gang)(gang)板(ban)(ban)、鍍錫(xi)鋼(gang)(gang)(gang)板(ban)(ban)或冷軋鋼(gang)(gang)(gang)板(ban)(ban)表(biao)面(mian)涂覆彩色(se)有(you)機涂料或薄膜的鋼(gang)(gang)(gang)板(ban)(ban)。
彩色涂(tu)(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)板以鍍鋅鋼(gang)(gang)板或冷軋鋼(gang)(gang)板為基體,經表面(mian)處理后涂(tu)(tu)(tu)以各種保(bao)護(hu)、裝(zhuang)飾涂(tu)(tu)(tu)層(ceng)(ceng),常(chang)用的涂(tu)(tu)(tu)層(ceng)(ceng)分為無機涂(tu)(tu)(tu)層(ceng)(ceng)、有機涂(tu)(tu)(tu)層(ceng)(ceng)和復(fu)合涂(tu)(tu)(tu)層(ceng)(ceng)三大類(lei)。彩涂(tu)(tu)(tu)鋼(gang)(gang)板由內至外的結構層(ceng)(ceng)為冷軋板、鍍鋅層(ceng)(ceng)、化(hua)學轉化(hua)層(ceng)(ceng)、初(chu)涂(tu)(tu)(tu)層(ceng)(ceng)(底漆(qi))、精涂(tu)(tu)(tu)層(ceng)(ceng)(正、背面(mian)漆(qi))。
二、彩涂鋼板的種類有哪些
彩色涂層(ceng)鋼(gang)(gang)板(ban)(ban)(ban)(ban)簡稱彩涂鋼(gang)(gang)板(ban)(ban)(ban)(ban),這種(zhong)板(ban)(ban)(ban)(ban)材表面色彩新穎、附(fu)著(zhu)力強、抗銹蝕性和裝飾性好,并(bing)且加工性能好,因此廣泛應用(yong)于建筑外墻(qiang)護墻(qiang)板(ban)(ban)(ban)(ban)、屋(wu)面板(ban)(ban)(ban)(ban)、瓦楞板(ban)(ban)(ban)(ban)、防(fang)水(shui)防(fang)氣(qi)滲(shen)透板(ban)(ban)(ban)(ban)、耐腐蝕設備(bei)和構件(jian)以(yi)及家具(ju)、汽車外殼、擋水(shui)板(ban)(ban)(ban)(ban)等。根(gen)據結構的(de)不同,彩涂鋼(gang)(gang)板(ban)(ban)(ban)(ban)可分為(wei)以(yi)下幾種(zhong)類(lei)型:
1、涂裝鋼板
用(yong)(yong)鍍(du)鋅鋼(gang)板作為(wei)基底,在其正面背面都進行涂裝,以保證其耐腐蝕性能。正面第(di)一層為(wei)底漆,通常(chang)為(wei)環(huan)氧底漆,因為(wei)它與金屬的附著力強(qiang),背面也涂有(you)環(huan)氧樹(shu)脂或丙烯酸(suan)樹(shu)脂;第(di)二層(面層)過(guo)去用(yong)(yong)醇酸(suan)樹(shu)脂,一般(ban)用(yong)(yong)聚(ju)酯類涂料或丙烯酸(suan)樹(shu)脂涂料。
2、PVC鋼板
PVC層是(shi)熱塑(su)性的,表面(mian)可(ke)以熱加工,如壓花(hua)(hua)可(ke)使表面(mian)質感豐(feng)富(fu),而且(qie)它還(huan)具有柔性,可(ke)以進行彎曲等二次加工,其耐腐蝕性能也比較好。PVC鋼板(ban)(ban)有兩種類型(xing),一(yi)種是(shi)用涂布糊狀PVC的方法(fa)生(sheng)產的,稱為涂布PVC鋼板(ban)(ban);另(ling)一(yi)種是(shi)將已成(cheng)型(xing)和(he)印花(hua)(hua)或壓花(hua)(hua)PVC膜貼在鋼板(ban)(ban)上,稱為貼膜PVC鋼板(ban)(ban)。
3、隔熱涂裝鋼板
隔熱涂裝鋼板是在彩色涂層鋼板的背面貼上15~17mm厚的聚苯乙烯泡沫塑料或硬質聚氨酯泡沫塑料,用來提高涂層鋼板的(de)性(xing)能,主要(yao)用于需(xu)要(yao)隔(ge)熱隔(ge)聲的(de)特殊領域。
4、高耐久性涂層鋼板
利(li)用(yong)氟塑(su)料和丙烯酸樹脂耐(nai)老化性(xing)能(neng)好的特點,將高(gao)耐(nai)久(jiu)性(xing)涂層(ceng)鋼板(ban)用(yong)在鋼板(ban)表面涂層(ceng)上,能(neng)使彩(cai)涂鋼板(ban)耐(nai)久(jiu)性(xing)、耐(nai)蝕(shi)性(xing)能(neng)提高(gao)。