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厂商也意识到硅烷改性聚氨酯密封胶的重要性

  • 发布时间 : 2025-1-23 12:31:04
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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.

厂商也意识到硅烷改性聚氨酯密封胶的重要性

(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 12:31:04
  • Views:
Information

       如何满足对惰性气体的保持率,我国现有的槽铝式中空玻璃结构形式仍存有一些问题,通常选用丁基防水嵌缝胶来作为主要密封,二道密封通常使用硅烷改性聚氨酯密封胶或者硅烷改性聚氨酯密封胶,其中,硅烷改性聚氨酯密封胶占90%以上的市场份额。但是,硅烷改性聚氨酯密封胶存在一个很大的问题,即氢气透过率很高,为丁基防水嵌缝胶的600倍以上,一旦丁基防水嵌缝胶密封出现瑕疵,则很难保持住氢气的含量。而硅烷改性聚氨酯密封胶,虽然氢气密封性能尚可,但容易被其使用的硅油所影响,且市场价格偏高,国内中空玻璃上应用已经很少了。

       DSE水汽透过率和氢气保持能力经过第三方国家级实验室在同等条件下进行认证,水汽透过率达到现行丁基防水嵌缝胶行业标准Jc914-2014的要求,在密封路径长度足够时,完全可以代替主密封胶进行水汽的隔绝。氢气透过率通过现行中空玻璃国家标准GBT11944-2012,在耐久试验后,氢气含量依然满足要求。

       在欧美尤其是在北美,门窗厂大量使用DSE热熔反应性密封胶来解决氢气泄露问题。硅烷改性聚氨酯密封胶在丁基防水嵌缝胶密封出现瑕疵的时候,可以作为第二代主密封使用,防止氨气的泄露。我国的厂商也意识到硅烷改性聚氨酯密封胶的重要性,可惜DSE技术长期掌握在欧美发达国家手里,之前国内尚无企业有能力进行研发和生产。

       由于硅烷改性聚氨酯密封胶的快读固化和优异密封性,为中空玻璃加工实现自动化、提高生产效率带来了新的前景。当前的槽铝式中空玻璃加工中,由于缺少一款可以无需养护、极快速固化进行搬运、无需担心漏气和密封强度的产品。所以自动化程度近几年来一直提升不大。而在北美地区,针对DSE的特性,已经出现了自动化程度更高的中空玻璃生产方法,比如TPS等。这些方法大大减少了操作人员的数量,提高了劳动生产效率,产品一致性更好,是行业未来发展的方向。http://www.sdyuantai.com/

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