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单组份热熔反应性单组分聚氨酯密封胶

  • 发布时间 : 2025-1-23 12:27:49
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(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.

单组份热熔反应性单组分聚氨酯密封胶

(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.

  • 发布时间 : 2025-1-23 12:27:49
  • Views:
Information

       DSE胶是一种单组份热熔反应性单组分聚氨酯密封胶,主要用于中空玻璃的第二道密封。DSE是英文Dual Seal Equivalent的缩写,意为“等效双道密封”,这种胶既有丁基胶的密封性,又有二道胶的强度。传统的中空玻璃通常采用丁基胶作为第一道密封,硫或硅酮胶作为单组分聚氨酯密封胶。在生产过程中,由于单组分聚氨酯密封胶在短期内不能达到要求的强度,为快速完成订单或尽快发货,致使在生产和运输过程中常发生中空玻璃内外片错位等现象,这大大降低了中空玻璃的完好性。

       DSE胶是在普通热熔胶的基础上升级而成的。普通热熔胶拥有良好的水汽密封性能,优秀的氢气保持能力,单组份使用方便,固化迅速,曾经被认为是中空玻璃二道单组分聚氨酯密封胶的最好选择。南宝DSE胶在保留普通热熔胶特性的同时,增加了与水汽接触后进行化学胶茹固化的特性。既有物理固化效果,又有化学胶戮效果。其中物理固化在打胶后10 min内完成,产生强大的初粘力,此时的中空玻璃即可搬运、装框、运输,无需等待养护。而化学胶豁固化,会与水汽接触产生后慢慢完成,根据空气湿度的不同,一般在1一4周后完成。化学固化完成后,剪切强度是物理固化和化学固化的结合,达到或者超过了双组份硅酮胶和聚硫胶的剪切强度。同时,固化完成的DSE胶不再是热塑性的,耐热性和难寒性都得到很大的提升。

       DSE胶在2000年已经在欧美得到推广和应用。研究表明,充惰性气体的中空玻璃可以降低其导热系数,这就对中空玻璃内惰性气体的泄露率提出了严格要求。早在2002版本的中空玻璃欧标EN1279中,就明确规定中空玻璃内的惰性气体年泄露率必须小于1%。在国内,中空玻璃国家标准GB/T 11944-2012中,明确增加了充气中空玻璃气体含量的要求以及检测方法,并且要求中空玻璃的寿命至少巧年。保持中空玻璃内的气体少泄露,可以有效保持中空玻璃的U值在使用期内达到要求已成为共识。http://www.sdyuantai.com/

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