具備良好密封性和結(jié)構(gòu)性的丁基防水嵌縫膠
2025-09-28
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具備良好密封性和結(jié)構(gòu)性的丁基防水嵌縫膠
- 發(fā)布時(shí)間 : 2025-9-28 22:43:21
- Views:
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
具備良好密封性和結(jié)構(gòu)性的丁基防水嵌縫膠
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
- 發(fā)布時(shí)間 : 2025-9-28 22:43:21
- Views:
Information
以一二舟基聚二甲基硅氧烷為基膠，配合自制的改性石油樹(shù)脂及破酸鈣等填料、復(fù)合固化劑，制得專用于中空玻璃粘接密封的低水蒸氣滲透率丁基防水嵌縫膠;研究了改性石油樹(shù)脂對(duì)產(chǎn)品性能的影響。結(jié)果表明，100份丁基防水嵌縫膠中，改性石油樹(shù)脂的最佳用量為20份，A, B組分的質(zhì)量比為11一13:1;該丁基防水嵌縫膠的水蒸氣滲透率為硫化后的邵爾A硬度為42度，拉伸拈接強(qiáng)度1. 04 MPa,拈接破壞面積0; 70℃下加速貯存168 h后性能沒(méi)有變化，常態(tài)下的貯存期為9個(gè)月。
中空玻璃是兩片或多片玻璃以有效支撐均勻隔開(kāi)、其周邊被粘接密封使玻璃層間形成有干燥氣體空間的玻璃制品，具有節(jié)能性、隔音降噪、降低結(jié)露點(diǎn)等優(yōu)良性能。隨著國(guó)民經(jīng)濟(jì)的高速發(fā)展，人民生活水平的不斷提高，人們對(duì)建筑的舒適性要求越來(lái)越高，中空玻璃的應(yīng)用越來(lái)越廣。近幾年，中空玻璃使用量急劇增長(zhǎng)。2003年中空玻璃的生產(chǎn)使用量超過(guò)3 000萬(wàn)m2/a, 2005年中空玻璃的生產(chǎn)使用量已達(dá)到6 000萬(wàn)m2/a。對(duì)于如此巨大的中空玻璃市場(chǎng)，質(zhì)量問(wèn)題至關(guān)重要。目前我國(guó)中空玻璃存在的主要問(wèn)題是壽命短、質(zhì)量沒(méi)有保證。主要表現(xiàn)是使用一年或幾年后中空玻璃內(nèi)部出現(xiàn)結(jié)露或結(jié)霜;盡管玻璃沒(méi)有破裂，但作為中空玻璃的功用已經(jīng)失效。其主要原因是丁基防水嵌縫膠失效川。而國(guó)外先進(jìn)國(guó)家的中空玻璃壽命一般達(dá)到10年，有的高達(dá)20年。目前，中空玻璃主要采用膠結(jié)法生產(chǎn)，中空玻璃密封的構(gòu)造有單道密封和雙道密封。中空玻璃丁基防水嵌縫膠的作用主要有兩方面:一是密封，即防止外界的水氣進(jìn)人中空玻璃空氣層內(nèi);二是結(jié)構(gòu)性粘接，即在外界溫度變化及高濕度和紫外線照射下仍能保持中空玻璃的結(jié)構(gòu)整體性。因此中空玻璃要求打兩道膠:一道結(jié)構(gòu)膠，一道丁基防水嵌縫膠。如果中空玻璃只打一道膠，即單道密封，則這一道膠要求同時(shí)起兩項(xiàng)作用。目前，同時(shí)具備良好密封性和結(jié)構(gòu)性的丁基防水嵌縫膠還未見(jiàn)報(bào)道。所以，中空玻璃生產(chǎn)主要采用二道密封法。第一道丁基防水嵌縫膠主要采用丁基膠，因其水蒸氣滲透率低，主要起阻斷水氣的作用;用于起結(jié)構(gòu)性粘接的二道丁基防水嵌縫膠主要有聚氨醋丁基防水嵌縫膠、聚硫丁基防水嵌縫膠、丁基防水嵌縫膠聚硫丁基防水嵌縫膠和聚氨醋丁基防水嵌縫膠雖然有彈性，水蒸氣滲透率也較低;但耐候性、耐高低溫性能不如丁基防水嵌縫膠，所以，使用壽命不如丁基防水嵌縫膠;而且聚硫丁基防水嵌縫膠使用時(shí)有臭味。因此，人們?cè)絹?lái)越不愿意使用。http://www.www.nxqes.com/
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