一、彩色涂層鋼板是什么材質
涂(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)(gang)板是(shi)指在具有(you)良好深沖性(xing)能(neng)的(de)低碳鋼(gang)(gang)(gang)板表面(mian)涂(tu)(tu)覆錫、鋅、鋁、鉻(ge)、鉛(qian)錫合金(jin)、有(you)機(ji)涂(tu)(tu)料(liao)和塑(su)料(liao)等的(de)制品,彩(cai)色(se)涂(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)(gang)板屬于涂(tu)(tu)層(ceng)(ceng)鋼(gang)(gang)(gang)板的(de)一種,是(shi)在鍍鋅鋼(gang)(gang)(gang)板、鍍鋁鋼(gang)(gang)(gang)板、鍍錫鋼(gang)(gang)(gang)板或冷(leng)軋鋼(gang)(gang)(gang)板表面(mian)涂(tu)(tu)覆彩(cai)色(se)有(you)機(ji)涂(tu)(tu)料(liao)或薄膜的(de)鋼(gang)(gang)(gang)板。
彩色涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)鋼板(ban)以鍍鋅鋼板(ban)或冷軋鋼板(ban)為基(ji)體,經表(biao)面處理后涂(tu)(tu)(tu)以各種保護、裝(zhuang)飾涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng),常用的涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)分為無機涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)、有機涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)和(he)復合涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)三(san)大類。彩涂(tu)(tu)(tu)鋼板(ban)由內至外的結構層(ceng)(ceng)(ceng)(ceng)(ceng)為冷軋板(ban)、鍍鋅層(ceng)(ceng)(ceng)(ceng)(ceng)、化(hua)學轉化(hua)層(ceng)(ceng)(ceng)(ceng)(ceng)、初涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)(底(di)漆)、精(jing)涂(tu)(tu)(tu)層(ceng)(ceng)(ceng)(ceng)(ceng)(正(zheng)、背面漆)。
二、彩涂鋼板的種類有哪些
彩色(se)涂層鋼板(ban)(ban)(ban)(ban)簡稱彩涂鋼板(ban)(ban)(ban)(ban),這種(zhong)板(ban)(ban)(ban)(ban)材(cai)表(biao)面色(se)彩新(xin)穎、附著(zhu)力強、抗銹蝕(shi)性(xing)(xing)和(he)裝飾性(xing)(xing)好,并且(qie)加工(gong)性(xing)(xing)能好,因此廣泛應(ying)用于建筑(zhu)外墻護墻板(ban)(ban)(ban)(ban)、屋面板(ban)(ban)(ban)(ban)、瓦楞(leng)板(ban)(ban)(ban)(ban)、防水防氣滲透板(ban)(ban)(ban)(ban)、耐腐蝕(shi)設備和(he)構(gou)件以(yi)及家具、汽車(che)外殼(ke)、擋水板(ban)(ban)(ban)(ban)等。根據(ju)結構(gou)的不同,彩涂鋼板(ban)(ban)(ban)(ban)可分為以(yi)下幾種(zhong)類型:
1、涂裝鋼板
用鍍(du)鋅鋼(gang)板作為基底,在(zai)其正(zheng)(zheng)面(mian)背面(mian)都進(jin)行涂裝,以保證其耐腐蝕(shi)性(xing)能。正(zheng)(zheng)面(mian)第一層(ceng)為底漆(qi),通常為環氧底漆(qi),因為它與(yu)金屬的附著力強(qiang),背面(mian)也(ye)涂有環氧樹脂或丙(bing)烯(xi)酸樹脂;第二層(ceng)(面(mian)層(ceng))過(guo)去用醇酸樹脂,一般用聚酯類(lei)涂料(liao)或丙(bing)烯(xi)酸樹脂涂料(liao)。
2、PVC鋼板
PVC層是(shi)熱塑性的(de)(de),表面(mian)可以熱加工,如壓花可使表面(mian)質感(gan)豐富(fu),而且它還具(ju)有柔性,可以進行(xing)彎曲(qu)等(deng)二次加工,其耐腐蝕性能也比較好。PVC鋼(gang)板(ban)有兩種類型,一(yi)種是(shi)用涂(tu)布糊(hu)狀(zhuang)PVC的(de)(de)方法生產的(de)(de),稱為涂(tu)布PVC鋼(gang)板(ban);另一(yi)種是(shi)將已成型和印花或壓花PVC膜(mo)貼在鋼(gang)板(ban)上,稱為貼膜(mo)PVC鋼(gang)板(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)性能,主要用(yong)于需要隔(ge)熱隔(ge)聲的(de)特殊領域。
4、高耐久性涂層鋼板
利用氟塑料和丙烯酸樹脂耐老化性能好的特點,將高(gao)耐久(jiu)(jiu)性涂(tu)層鋼(gang)板用在鋼(gang)板表面涂(tu)層上,能使彩涂(tu)鋼(gang)板耐久(jiu)(jiu)性、耐蝕性能提高(gao)。