? ? 水(shui)性(xing)聚(ju)氨酯涂(tu)料(liao)是以水(shui)性(xing)PU樹脂為成膜物,以水為分散介質,輔以顏填料、助劑等調配而成的環保型涂料。交聯改性的水性聚氨酯涂料具有良好的貯存穩定性、涂膜機械性能、耐水性、耐溶劑性及耐老化性能(罩光清漆或白色面漆還可添加紫外線吸收劑等助劑進一步提升其抗黃變性能)。木器水性聚氨酯涂料主要包括熱固型和含封閉異氰酸酯型。
? ? 我國(guo)(guo)目前聚(ju)(ju)氨酯(zhi)(zhi)的(de)主要(yao)應用領域是聚(ju)(ju)氨酯(zhi)(zhi)發泡(pao)材料、合成革用聚(ju)(ju)氨酯(zhi)(zhi)、聚(ju)(ju)氨酯(zhi)(zhi)涂料和彈性體(ti)等。近年(nian)來,我國(guo)(guo)聚(ju)(ju)氨酯(zhi)(zhi)制品消費(fei)*多的(de)是聚(ju)(ju)氨酯(zhi)(zhi)泡(pao)沫,消耗占(zhan)比39.2%;合成(cheng)革漿料消耗占比17.1%; 涂料消耗占比為16.1% 。其他制品所占比重均(jun)在10%以(yi)下。
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? ? 聚氨(an)酯(zhi)涂(tu)料在木器涂(tu)料工業(ye)中占主(zhu)導地位,占到75%的市場份額(e);其次(ci)是汽車修補漆,占(zhan)40%左(zuo)右(you)。其(qi)他聚氨酯防腐(fu)涂料(liao)、聚氨酯塑(su)膠涂料(liao)等占10%左右的市場份額。水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)材料(liao)(liao)以其環保性(xing)(xing)(xing)能,在(zai)膠(jiao)粘劑(ji)(ji)及(ji)涂(tu)料(liao)(liao)行(xing)業(ye)有很好(hao)的(de)發展(zhan)前(qian)景。水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)分(fen)散體已成功地(di)應用于(yu)輕紡、皮革加工(gong)(gong)、涂(tu)料(liao)(liao)、木(mu)材加工(gong)(gong)、建(jian)材、造紙和膠(jiao)粘劑(ji)(ji)等行(xing)業(ye)。目前(qian),以水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)分(fen)散體為基料(liao)(liao)而生產出來的(de)新型水(shui)(shui)(shui)性(xing)(xing)(xing)涂(tu)料(liao)(liao),正逐(zhu)(zhu)步取代溶劑(ji)(ji)型聚(ju)(ju)氨(an)酯(zhi)涂(tu)料(liao)(liao),廣泛用作水(shui)(shui)(shui)性(xing)(xing)(xing)木(mu)器漆和水(shui)(shui)(shui)性(xing)(xing)(xing)木(mu)器封(feng)閉底漆;并且(qie)漆膜耐磨(mo)、快干、外(wai)觀好(hao)、耐溶劑(ji)(ji)性(xing)(xing)(xing)好(hao)的(de)水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)涂(tu)料(liao)(liao)在(zai)國內(nei)木(mu)器涂(tu)料(liao)(liao)領域占有的(de)市場份額正在(zai)逐(zhu)(zhu)步提升(sheng)。此(ci)外(wai),水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)分(fen)散體還能用作水(shui)(shui)(shui)性(xing)(xing)(xing)塑料(liao)(liao)涂(tu)料(liao)(liao)、水(shui)(shui)(shui)性(xing)(xing)(xing)工(gong)(gong)業(ye)涂(tu)料(liao)(liao)、水(shui)(shui)(shui)性(xing)(xing)(xing)防腐(fu)蝕涂(tu)料(liao)(liao)、水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)內(nei)外(wai)墻涂(tu)料(liao)(liao)、水(shui)(shui)(shui)性(xing)(xing)(xing)聚(ju)(ju)氨(an)酯(zhi)膠(jiao)黏劑(ji)(ji)等,滿足不同行(xing)業(ye)的(de)性(xing)(xing)(xing)能要(yao)求。
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