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單組份熱熔反應(yīng)性單組分聚氨酯密封膠
- 發(fā)布時(shí)間 : 2025-1-23 12:27:49
- 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.
單組份熱熔反應(yīng)性單組分聚氨酯密封膠
(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 : 2025-1-23 12:27:49
- Views:
Information
DSE膠是一種單組份熱熔反應(yīng)性單組分聚氨酯密封膠，主要用于中空玻璃的第二道密封。DSE是英文Dual Seal Equivalent的縮寫(xiě)，意為“等效雙道密封”，這種膠既有丁基膠的密封性，又有二道膠的強(qiáng)度。傳統(tǒng)的中空玻璃通常采用丁基膠作為第一道密封，硫或硅酮膠作為單組分聚氨酯密封膠。在生產(chǎn)過(guò)程中，由于單組分聚氨酯密封膠在短期內(nèi)不能達(dá)到要求的強(qiáng)度，為快速完成訂單或盡快發(fā)貨，致使在生產(chǎn)和運(yùn)輸過(guò)程中常發(fā)生中空玻璃內(nèi)外片錯(cuò)位等現(xiàn)象，這大大降低了中空玻璃的完好性。
DSE膠是在普通熱熔膠的基礎(chǔ)上升級(jí)而成的。普通熱熔膠擁有良好的水汽密封性能，優(yōu)秀的氫氣保持能力，單組份使用方便，固化迅速，曾經(jīng)被認(rèn)為是中空玻璃二道單組分聚氨酯密封膠的最好選擇。南寶DSE膠在保留普通熱熔膠特性的同時(shí)，增加了與水汽接觸后進(jìn)行化學(xué)膠茹固化的特性。既有物理固化效果，又有化學(xué)膠戮效果。其中物理固化在打膠后10 min內(nèi)完成，產(chǎn)生強(qiáng)大的初粘力，此時(shí)的中空玻璃即可搬運(yùn)、裝框、運(yùn)輸，無(wú)需等待養(yǎng)護(hù)。而化學(xué)膠豁固化，會(huì)與水汽接觸產(chǎn)生后慢慢完成，根據(jù)空氣濕度的不同，一般在1一4周后完成�；瘜W(xué)固化完成后，剪切強(qiáng)度是物理固化和化學(xué)固化的結(jié)合，達(dá)到或者超過(guò)了雙組份硅酮膠和聚硫膠的剪切強(qiáng)度。同時(shí)，固化完成的DSE膠不再是熱塑性的，耐熱性和難寒性都得到很大的提升。
DSE膠在2000年已經(jīng)在歐美得到推廣和應(yīng)用。研究表明，充惰性氣體的中空玻璃可以降低其導(dǎo)熱系數(shù)，這就對(duì)中空玻璃內(nèi)惰性氣體的泄露率提出了嚴(yán)格要求。早在2002版本的中空玻璃歐標(biāo)EN1279中，就明確規(guī)定中空玻璃內(nèi)的惰性氣體年泄露率必須小于1%。在國(guó)內(nèi)，中空玻璃國(guó)家標(biāo)準(zhǔn)GB/T 11944-2012中，明確增加了充氣中空玻璃氣體含量的要求以及檢測(cè)方法，并且要求中空玻璃的壽命至少巧年。保持中空玻璃內(nèi)的氣體少泄露，可以有效保持中空玻璃的U值在使用期內(nèi)達(dá)到要求已成為共識(shí)。http://m.topnewcheat.com/
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