隨著城市建筑的現代化,更加要求建筑節能、防水、隔熱、隔音、舒適,接縫的密封越來越為建筑業重視,這種形勢促使建筑接縫密封膠的(de)發展(zhan),特別(bie)最(zui)近十年硅酮密(mi)封膠(jiao)發展(zhan)尤為迅速,適(shi)應著鋁門窗(chuang)和塑(su)料門窗(chuang)的(de)門窗(chuang)的(de)密(mi)封安(an)裝和裝飾裝修工程需求,而且促(cu)進了玻(bo)璃(li)幕墻、中空(kong)玻(bo)璃(li)、外掛墻板及金屬框架粘結結構等建筑新技術、新產(chan)品、新結構的(de)發展(zhan)。目前,硅酮密(mi)封膠(jiao)的(de)功能化品種逐漸增多,產(chan)品標準不斷更(geng)新完善,而且開(kai)始(shi)發展(zhan)新型改(gai)性硅酮密(mi)封膠(jiao),產(chan)量已占據建筑密(mi)封膠(jiao)總量的(de)2/3,并開(kai)始(shi)有少量出口(kou),市場競(jing)爭逐漸激烈。
酸(suan)(suan)性硅(gui)酮密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)對玻(bo)璃優良粘結(jie)性,但不宜用于(yu)混(hun)凝土、石材(cai)和金屬接(jie)縫(feng),隨著人們(men)認(ren)識的(de)深化(hua),其應用范圍將受到局限。當前脫醇及脫肟(wo)型(xing)等中(zhong)(zhong)性密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)發(fa)展很快,功能性品種和產(chan)量(liang)不斷擴大,其中(zhong)(zhong)硅(gui)酮結(jie)構密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)和玻(bo)璃接(jie)縫(feng)耐侯密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)的(de)市場(chang)份額呈現明顯增長,中(zhong)(zhong)性建(jian)筑石材(cai)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)、防霉(mei)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)、防火密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)、金屬屋面(mian)及管道密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)等新(xin)型(xing)功能產(chan)品,已(yi)投放市場(chang)。此外,改性有(you)機硅(gui)產(chan)品已(yi)開(kai)(kai)始(shi)(shi)從研制走(zou)向(xiang)工(gong)業生產(chan),其中(zhong)(zhong)包括以端硅(gui)氧烷基聚醚聚合物為基礎(chu)的(de)濕氣固(gu)化(hua)密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)(POP)和以硅(gui)氧烷封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)端的(de)聚醚氨酯有(you)機硅(gui)改性密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)(sPu)。目(mu)前包括結(jie)構密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)在內的(de)中(zhong)(zhong)性密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)總量(liang)已(yi)超過(guo)萬噸(dun),開(kai)(kai)始(shi)(shi)改變酸(suan)(suan)性硅(gui)酮密(mi)(mi)封(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)(feng)膠(jiao)的(de)市場(chang)比(bi)例。
建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)硅酮密封(feng)膠(jiao)(jiao)具有(you)(you)良好的(de)發展(zhan)前(qian)景目前(qian)我國(guo)城鎮房屋建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)保有(you)(you)量(liang)(liang)(liang)為(wei)362億(yi)(yi)平米(城市74億(yi)(yi)平米),每(mei)年新建(jian)(jian)(jian)近13億(yi)(yi)平米并以10%的(de)速度遞增,隨著今后建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)規(gui)模(mo)的(de)擴大(da)、舊建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)維(wei)護更(geng)新面積(ji)的(de)不斷增長,建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)功能(neng)、裝修(xiu)檔次逐漸提高,預計密封(feng)膠(jiao)(jiao)需求量(liang)(liang)(liang)有(you)(you)增無減(jian),據有(you)(you)關發展(zhan)規(gui)劃預計,建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)密封(feng)膠(jiao)(jiao)的(de)總銷(xiao)量(liang)(liang)(liang)2015年將(jiang)達到18萬噸,其中硅酮密封(feng)膠(jiao)(jiao)可能(neng)占(zhan)有(you)(you)40%,特別(bie)在(zai)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)節(jie)(jie)能(neng)、防(fang)水、裝飾裝修(xiu)和建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)幕(mu)墻等工(gong)程中,具有(you)(you)良好的(de)發展(zhan)前(qian)景。 我國(guo)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)保溫隔熱水平較低,外墻散(san)熱量(liang)(liang)(liang)為(wei)國(guo)外l.5-2.2倍(bei),冷風(feng)滲透量(liang)(liang)(liang)是國(guo)外的(de)3-6倍(bei),而48%的(de)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)在(zai)采(cai)暖(nuan)區,空(kong)(kong)調季(ji)節(jie)(jie)也較長,每(mei)年用(yong)(yong)于建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)采(cai)暖(nuan)、降溫的(de)能(neng)耗(hao)高達1.2億(yi)(yi)噸標煤。門窗(chuang)在(zai)房屋建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)耗(hao)能(neng)中比例最大(da),熱損失占(zhan)總量(liang)(liang)(liang)的(de)40%根據我國(guo)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)節(jie)(jie)能(neng)法規(gui)要求,節(jie)(jie)能(neng)的(de)一個重要措施是用(yong)(yong)中空(kong)(kong)玻(bo)璃(li)逐步成為(wei)窗(chuang)用(yong)(yong)玻(bo)璃(li)的(de)主體。目前(qian)我國(guo)中空(kong)(kong)玻(bo)璃(li)產(chan)量(liang)(liang)(liang)約(yue)2000萬平方米(10年前(qian)為(wei)50萬平方米),主要用(yong)(yong)于公用(yong)(yong)工(gong)程和商用(yong)(yong)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu),并開始推(tui)向民用(yong)(yong)建(jian)(jian)(jian)筑(zhu)(zhu)(zhu)。