玻璃鳞片是玻璃鳞片胶泥涂料中重要的组分
日期:2017/5/23 16:40:53 / 人气:441
玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)是(shi)玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)胶(jiao)泥(ni)涂(tu)(tu)(tu)料(liao)(liao)中(zhong)(zhong)非(fei)常重要(yao)的(de)(de)组(zu)分,玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)是(shi)采(cai)用(yong)(yong)专门(men)工(gong)(gong)艺C玻(bo)(bo)璃(li)(li)(li)(li)制(zhi)作成(cheng)的(de)(de)片(pian)(pian)(pian)(pian)(pian)状填充剂(ji)(ji)。玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)的(de)(de)性(xing)(xing)能直接受玻(bo)(bo)璃(li)(li)(li)(li)原料(liao)(liao)成(cheng)分、鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)厚(hou)度(du)、鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)是(shi)否经过处理及鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)大小(xiao)等(deng)诸多因(yin)(yin)素的(de)(de)影(ying)响(xiang)。由于C玻(bo)(bo)璃(li)(li)(li)(li)耐酸性(xing)(xing)和(he)(he)(he)耐水性(xing)(xing)好,因(yin)(yin)此(ci)用(yong)(yong)于制(zhi)作玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)的(de)(de)玻(bo)(bo)璃(li)(li)(li)(li)原料(liao)(liao)必须为C玻(bo)(bo)璃(li)(li)(li)(li)。玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)胶(jiao)泥(ni)树(shu)脂(zhi)(zhi)涂(tu)(tu)(tu)料(liao)(liao)中(zhong)(zhong)的(de)(de)玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)占组(zu)成(cheng)的(de)(de)质(zhi)量百(bai)分数(shu)(shu)为20wt%-30wt%,它们在(zai)衬(chen)(chen)层(ceng)(ceng)(ceng)(ceng)(ceng)中(zhong)(zhong)采(cai)取和(he)(he)(he)基(ji)(ji)材表(biao)(biao)面平行(xing)(xing)的(de)(de)方向重叠排(pai)列,只有当玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)的(de)(de)厚(hou)度(du)达(da)到要(yao)求(qiu)范(fan)围,才能保证在(zai)衬(chen)(chen)层(ceng)(ceng)(ceng)(ceng)(ceng)中(zhong)(zhong)有百(bai)余层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)GF排(pai)列。这种结构阻止了腐蚀性(xing)(xing)离子、水和(he)(he)(he)氧气等(deng)渗透(tou)(tou),减小(xiao)了树(shu)脂(zhi)(zhi)硬化(hua)(hua)的(de)(de)收(shou)缩(suo)率和(he)(he)(he)残留应力(li),缩(suo)小(xiao)了涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)和(he)(he)(he)金属(shu)基(ji)(ji)体之(zhi)间在(zai)热膨胀系数(shu)(shu)上的(de)(de)差值,因(yin)(yin)此(ci)可(ke)(ke)(ke)阻止因(yin)(yin)反复、急剧的(de)(de)温(wen)度(du)变化(hua)(hua)而引(yin)起的(de)(de)龟(gui)裂和(he)(he)(he)剥落,增强了衬(chen)(chen)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)附着力(li),提(ti)高了衬(chen)(chen)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)机(ji)械强度(du)、表(biao)(biao)面强度(du),而且强烈了衬(chen)(chen)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)耐磨性(xing)(xing)。玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)的(de)(de)片(pian)(pian)(pian)(pian)(pian)径(jing)大小(xiao)影(ying)响(xiang)涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抗(kang)(kang)(kang)渗透(tou)(tou)性(xing)(xing),大片(pian)(pian)(pian)(pian)(pian)的(de)(de)GF可(ke)(ke)(ke)以(yi)(yi)获(huo)得明(ming)显(xian)的(de)(de)削的(de)(de)渗透(tou)(tou)系数(shu)(shu)。在(zai)FGD应用(yong)(yong)中(zhong)(zhong),喷涂(tu)(tu)(tu)较薄的(de)(de)涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)一般(ban)采(cai)用(yong)(yong)较细的(de)(de)GF。有特别防渗要(yao)求(qiu),采(cai)用(yong)(yong)泥(ni)刀涂(tu)(tu)(tu)抹(mo)施(shi)工(gong)(gong)的(de)(de)厚(hou)型涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)可(ke)(ke)(ke)采(cai)用(yong)(yong)3.2mm的(de)(de)GF。通(tong)常采(cai)用(yong)(yong)的(de)(de)GF粒径(jing)为0.2-3.2mm,但(dan)从施(shi)工(gong)(gong)性(xing)(xing)能考虑,以(yi)(yi)0.5mm以(yi)(yi)下(xia)为宜。玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)需(xu)用(yong)(yong)硅烷偶联剂(ji)(ji)进行(xing)(xing)处理,这样可(ke)(ke)(ke)以(yi)(yi)明(ming)显(xian)增加(jia)(jia)玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)与树(shu)脂(zhi)(zhi)之(zhi)间的(de)(de)黏(nian)结力(li),有效的(de)(de)增加(jia)(jia)涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抗(kang)(kang)(kang)渗性(xing)(xing),降低涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)吸水性(xing)(xing)。此(ci)外,也(ye)有资料(liao)(liao)报道,玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)经磷酸或表(biao)(biao)面活性(xing)(xing)剂(ji)(ji)等(deng)物质(zhi)处理后可(ke)(ke)(ke)减少玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)间的(de)(de)相(xiang)互重叠,增加(jia)(jia)玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)在(zai)树(shu)脂(zhi)(zhi)中(zhong)(zhong)的(de)(de)漂浮行(xing)(xing),有利于玻(bo)(bo)璃(li)(li)(li)(li)鳞(lin)(lin)(lin)(lin)(lin)(lin)片(pian)(pian)(pian)(pian)(pian)与基(ji)(ji)体之(zhi)间的(de)(de)平行(xing)(xing)排(pai)列,涂(tu)(tu)(tu)层(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)抗(kang)(kang)(kang)渗性(xing)(xing)提(ti)高。