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关于新疆防火涂料的耐久性问题

发布日期:2016-05-13 00:00 来源://www.yhguoqi.cn 点击:

   新疆防火涂料施工对于装饰性涂料的老(lao)(lao)化(hua),主要考(kao)察(cha)老(lao)(lao)化(hua)后装饰性(xing)(xing)(xing)(xing)(xing)能(neng)(neng),如(ru)失光(guang)、褪色、外观变(bian)(bian)化(hua)、物化(hua)、机械性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)变(bian)(bian)化(hua)和电(dian)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng),对(dui)于保护性(xing)(xing)(xing)(xing)(xing)涂(tu)料(liao)(liao)(liao)(liao)(liao),主要考(kao)察(cha)老(lao)(lao)化(hua)后的保护性(xing)(xing)(xing)(xing)(xing)漆(qi)膜老(lao)(lao)化(hua)程度(du)进行评定(ding)时(shi)(shi),装饰性(xing)(xing)(xing)(xing)(xing)漆(qi)膜需(xu)检(jian)(jian)(jian)测(ce)失光(guang)、变(bian)(bian)色、粉(fen)化(hua)、开(kai)裂(lie)、起(qi)泡、生(sheng)锈、剥落、长霉、斑点、泛金、沾污(wu)11项指(zhi)标(biao)(biao),保护性(xing)(xing)(xing)(xing)(xing)漆(qi)膜仅(jin)需(xu)检(jian)(jian)(jian)测(ce)变(bian)(bian)色、粉(fen)化(hua)、开(kai)裂(lie)、起(qi)泡、长霉、生(sheng)锈、剥落7项指(zhi)标(biao)(biao)。需(xu)要注意的是(shi),以上指(zhi)标(biao)(biao)并不(bu)是(shi)直(zhi)接(jie)确定(ding)出涂(tu)料(liao)(liao)(liao)(liao)(liao)涂(tu)膜性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)衰减(jian)的程度(du),仅(jin)作(zuo)为(wei)评价老(lao)(lao)化(hua)程度(du)额依据,而防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)作(zuo)为(wei)保护性(xing)(xing)(xing)(xing)(xing)涂(tu)料(liao)(liao)(liao)(liao)(liao)的一种,现有研究(jiu)(jiu)均关注其粘接(jie)强(qiang)度(du)与(yu)耐(nai)(nai)(nai)火(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)的衰减(jian),认为(wei)防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)耐(nai)(nai)(nai)久性(xing)(xing)(xing)(xing)(xing)包含两个方(fang)面:一是(shi)防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)与(yu)基(ji)材粘接(jie)力(li)的耐(nai)(nai)(nai)久性(xing)(xing)(xing)(xing)(xing),包括(kuo)(kuo)开(kai)裂(lie)、粉(fen)化(hua)、剥落等(deng)现象;二(er)是(shi)其耐(nai)(nai)(nai)火(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)能(neng)(neng)否是(shi)持(chi)久保证,且耐(nai)(nai)(nai)火(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)的衰减(jian)或降低(di)程度(du)作(zuo)为(wei)防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)的寿(shou)命评价考(kao)察(cha)重(zhong)点。判断(duan)防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)是(shi)否老(lao)(lao)化(hua),对(dui)涂(tu)覆的防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)直(zhi)接(jie)进行破(po)坏性(xing)(xing)(xing)(xing)(xing)试(shi)验(包括(kuo)(kuo)检(jian)(jian)(jian)测(ce)耐(nai)(nai)(nai)火(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)和粘接(jie)强(qiang)度(du))是(shi)不(bu)妥的,在(zai)根据GB/T1766-2008评定(ding)防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)老(lao)(lao)化(hua)等(deng)级(ji)时(shi)(shi)应(ying)尽量(liang)减(jian)少对(dui)涂(tu)层(ceng)的破(po)坏。防(fang)(fang)火(huo)(huo)(huo)涂(tu)料(liao)(liao)(liao)(liao)(liao)的老(lao)(lao)化(hua)等(deng)级(ji)与(yu)粘接(jie)强(qiang)度(du)、耐(nai)(nai)(nai)火(huo)(huo)(huo)性(xing)(xing)(xing)(xing)(xing)能(neng)(neng)衰减(jian)的相关性(xing)(xing)(xing)(xing)(xing),目前尚不(bu)清(qing)楚,任有待(dai)进一步研究(jiu)(jiu)。

   新疆防火涂料施工的(de)(de)耐久性(xing)(xing)问(wen)(wen)题(ti),无论是(shi)人(ren)工(gong)加(jia)速老(lao)(lao)(lao)化(hua)(hua)(hua)试验(yan)还(hai)是(shi)自然(ran)(ran)暴(bao)露(lu)(lu)试验(yan)均不够(gou)成(cheng)(cheng)熟,老(lao)(lao)(lao)化(hua)(hua)(hua)后性(xing)(xing)能(neng)的(de)(de)测试评价、老(lao)(lao)(lao)化(hua)(hua)(hua)机(ji)理等方面(mian)仍有诸多(duo)问(wen)(wen)题(ti)尚未解决(jue)。常(chang)规涂(tu)料耐久性(xing)(xing)的(de)(de)研究(jiu)成(cheng)(cheng)果已十分丰富,其相关(guan)标准已形成(cheng)(cheng)体系,能(neng)够(gou)对防(fang)火涂(tu)料的(de)(de)老(lao)(lao)(lao)化(hua)(hua)(hua)研究(jiu)提供(gong)一定的(de)(de)借鉴与参考(kao)。可籍此开展防(fang)火涂(tu)料各组成(cheng)(cheng)成(cheng)(cheng)分对其老(lao)(lao)(lao)化(hua)(hua)(hua)的(de)(de)影响,防(fang)火涂(tu)料的(de)(de)老(lao)(lao)(lao)化(hua)(hua)(hua)机(ji)理,人(ren)工(gong)加(jia)速老(lao)(lao)(lao)化(hua)(hua)(hua)和自然(ran)(ran)气(qi)候暴(bao)露(lu)(lu)试验(yan)方法及(ji)两者(zhe)相关(guan)性(xing)(xing)等方面(mian)的(de)(de)研究(jiu)。


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