雅致專業防火涂料

    防火涂料施工前準備

　　按照鋼(gang)結構防(fang)火涂(tu)料(liao)施(shi)(shi)工(gong)(gong)(gong)方案(an)的規定，防(fang)火涂(tu)料(liao)施(shi)(shi)工(gong)(gong)(gong)前應對基(ji)材(cai)表面(mian)按要求進行(xing)除(chu)(chu)銹、防(fang)銹處理，務求全面(mian)徹底，防(fang)火涂(tu)料(liao)施(shi)(shi)工(gong)(gong)(gong)前還對基(ji)材(cai)表面(mian)作塵(chen)(chen)土，油(you)污等(deng)雜(za)質清除(chu)(chu)，采用高(gao)壓(ya)氣(qi)體(ti)或(huo)用高(gao)壓(ya)水槍進行(xing)表面(mian)除(chu)(chu)塵(chen)(chen)清理，待基(ji)材(cai)表面(mian)無水進行(xing)除(chu)(chu)塵(chen)(chen)、除(chu)(chu)雜(za)物、油(you)污等(deng)檢查合格后方可施(shi)(shi)工(gong)(gong)(gong)防(fang)火涂(tu)料(liao)。

　　1. 待涂表面(mian)的處(chu)理：在施工之前(qian)，應將支承(cheng)構件表面(mian)處(chu)理干凈(jing)(包(bao)括除銹、清除焊渣及其(qi)它(ta)污物)；檢查鋼結構表面(mian)有無(wu)漏刷防銹底漆的現象，及時修補。

　　2. 防火涂料的(de)(de)儲存：經檢驗合格的(de)(de)涂料，應存放(fang)(fang)在干燥通風的(de)(de)倉庫內。應將(jiang)涂料擺放(fang)(fang)整(zheng)齊，防止風吹雨淋、陽光暴曬，如(ru)結塊變質的(de)(de)涂料，不得使用。

　　防火涂料的施工

　　1. 采用(yong)噴涂方式。

　　2. 涂(tu)裝施(shi)(shi)工(gong)(gong)(gong)：鋼結(jie)構(gou)防(fang)火涂(tu)料施(shi)(shi)工(gong)(gong)(gong)前應充分(fen)攪(jiao)拌均勻后方可施(shi)(shi)工(gong)(gong)(gong)使(shi)用，施(shi)(shi)工(gong)(gong)(gong)第一(yi)遍后，表干(gan)后18-24h進行第二遍施(shi)(shi)工(gong)(gong)(gong)，以后各遍施(shi)(shi)工(gong)(gong)(gong)，涂(tu)層厚度(du)應根據需求控制，直至達到(dao)規定(ding)厚度(du)。每次施(shi)(shi)工(gong)(gong)(gong)時間間隔為18-24小時以上，施(shi)(shi)工(gong)(gong)(gong)環境溫度(du)為0-40℃。基材溫度(du)為5-45℃。空(kong)氣相(xiang)對(dui)濕度(du)不(bu)大(da)(da)于90%，施(shi)(shi)工(gong)(gong)(gong)現場空(kong)氣流通，風速不(bu)大(da)(da)于5m/S，室外作業或施(shi)(shi)工(gong)(gong)(gong)構(gou)件表面結(jie)露時不(bu)宜施(shi)(shi)工(gong)(gong)(gong)。

　　3、防(fang)火涂(tu)(tu)(tu)(tu)料(liao)噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)：噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)底(di)(di)層(ceng)(ceng)(ceng)料(liao)，為(wei)提(ti)高涂(tu)(tu)(tu)(tu)料(liao)與鋼(gang)梁基層(ceng)(ceng)(ceng)的粘結(jie)強(qiang)度，應(ying)(ying)在(zai)(zai)(zai)底(di)(di)層(ceng)(ceng)(ceng)的漿料(liao)中(zhong)添加少量的水(shui)性膠粘劑。涂(tu)(tu)(tu)(tu)層(ceng)(ceng)(ceng)表面(mian)有明顯(xian)的乳突、凹坑，應(ying)(ying)用(yong)抹(mo)刀(dao)(dao)修平(ping)。噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)前應(ying)(ying)進行(xing)試噴(pen)(pen)(pen)(pen)(pen)并制作樣板。通過試噴(pen)(pen)(pen)(pen)(pen)確(que)定噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)氣壓、噴(pen)(pen)(pen)(pen)(pen)距(ju)、噴(pen)(pen)(pen)(pen)(pen)槍(qiang)移動速度等工藝的最優(you)參數，并經監(jian)理用(yong)標(biao)準樣板比對(dui)確(que)認后(hou)(hou)，方可進行(xing)大面(mian)積噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)。噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)時，噴(pen)(pen)(pen)(pen)(pen)槍(qiang)要(yao)垂(chui)直于(yu)被噴(pen)(pen)(pen)(pen)(pen)鋼(gang)構(gou)件(jian)表面(mian)，噴(pen)(pen)(pen)(pen)(pen)距(ju)6-10毫米，保持在(zai)(zai)(zai)0.4-0.6MP，噴(pen)(pen)(pen)(pen)(pen)槍(qiang)運行(xing)速度要(yao)保持穩定，不能在(zai)(zai)(zai)同一(yi)位(wei)置久留(liu)，避免造成(cheng)涂(tu)(tu)(tu)(tu)料(liao)堆積和流(liu)淌。噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)過程中(zhong)，配(pei)料(liao)及往噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)機(ji)內(nei)加料(liao)均要(yao)連(lian)續進行(xing)，不得停(ting)留(liu)。底(di)(di)層(ceng)(ceng)(ceng)涂(tu)(tu)(tu)(tu)料(liao)表面(mian)干燥后(hou)(hou)（底(di)(di)層(ceng)(ceng)(ceng)涂(tu)(tu)(tu)(tu)料(liao)施工24小(xiao)時后(hou)(hou)），方可進行(xing)面(mian)層(ceng)(ceng)(ceng)涂(tu)(tu)(tu)(tu)料(liao)的噴(pen)(pen)(pen)(pen)(pen)涂(tu)(tu)(tu)(tu)，對(dui)于(yu)明顯(xian)凹凸不平(ping)處，應(ying)(ying)用(yong)抹(mo)刀(dao)(dao)進行(xing)抹(mo)平(ping)處理，以確(que)保涂(tu)(tu)(tu)(tu)層(ceng)(ceng)(ceng)表面(mian)均勻光潔。

　　防火涂料施工中注意事項

　　1. 防火涂料在運輸存放過程中要防雨防潮。

　　2. 防(fang)火涂料當出現固化、結塊時不得使(shi)用。剛施(shi)工完(wan)的涂層(ceng)應防(fang)止雨水沖淋。

　　3. 若涂(tu)料在使用中若變(bian)稠時(shi)（不屬時(shi)間過(guo)長硬化(hua)）可再加入少量水攪勻后(hou)再用。

　　4. 涂料(liao)噴涂后(hou)，宜用塑料(liao)布或其它物(wu)品遮擋，以(yi)免強風直(zhi)吹和暴曬，造成涂層開(kai)裂(lie)。

　　5. 不需噴(pen)(pen)涂抹涂的部位(wei)，要在噴(pen)(pen)涂前(qian)蓋住，一旦造成污染，應(ying)馬上清洗(xi)干凈。

　　6. 噴涂工(gong)具(ju)停(ting)止使(shi)用(yong)后，應馬(ma)上清(qing)洗干凈，以備(bei)再用(yong)。

　　7. 施(shi)(shi)工(gong)溫(wen)度(du)(du)：施(shi)(shi)工(gong)期間，以(yi)及(ji)施(shi)(shi)工(gong)后(hou)24之內，施(shi)(shi)工(gong)周圍環(huan)境及(ji)鋼構件溫(wen)度(du)(du)均應保(bao)持在5℃以(yi)上(shang)為宜(yi)。若不(bu)(bu)能(neng)滿(man)足此溫(wen)度(du)(du)條件時，應另(ling)采取其它特殊措(cuo)施(shi)(shi)，防(fang)止涂層受凍。當風速大于5m/s，或雨天(tian)和(he)構件表面有結露時，不(bu)(bu)宜(yi)作業。

　　8. 防(fang)火涂(tu)料初期強度較低(di)，容易碰壞。因此，噴涂(tu)應在相(xiang)關鋼結構施工完(wan)后(hou)再進行，防(fang)止強烈震動和碰撞(zhuang)。

　　9. 施工時若有上、下(xia)立(li)體交叉(cha)作(zuo)(zuo)業，應注(zhu)意(yi)安(an)全。特(te)別是在腳(jiao)手(shou)架上的(de)操(cao)作(zuo)(zuo)人(ren)員要加倍小心，操(cao)作(zuo)(zuo)人(ren)員必須戴(dai)好防護用(yong)具，系好安(an)全帶后(hou)方(fang)可操(cao)作(zuo)(zuo)。