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丁基防水嵌縫膠粘接性能未達標引發砸傷事件的風險
- 發布時間 : 2024-10-22 17:01:08
- 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.
丁基防水嵌縫膠粘接性能未達標引發砸傷事件的風險
(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.
- 發布時間 : 2024-10-22 17:01:08
- Views:
Information
此類問題發生于丁基防水嵌縫膠產品。粘接性能不達標，意味著膠接面處膠體的粘接性能不好，易造成膠體脫落、失效，嚴重時引發安全事故。
造成粘接性能不達標的原因可能是配方中偶聯劑的選用不合理。丁基防水嵌縫膠的粘接性主要來自于配方中的硅烷偶聯劑(增豁劑)，偶聯劑的選型和用量選擇在某種程度上體現了丁基防水嵌縫膠產品的生產技術水平。硅烷偶聯劑作為增豁劑的作用原理在于它本身具有兩種基團:一種基團可以和被粘的骨架材料結合;而另一種基團則可以與高分子材料或粘接劑結合，從而在粘接界面形成強力較高的化學鍵，大大改善產品粘接強度，提高膠體交聯強度、耐水、耐氣候等性能。可見，偶聯劑在丁基防水嵌縫膠中的作用非常關鍵。
偶聯劑成本較高，某些高性能偶聯劑價格更貴，有些廠家可能盲目降低成本或產品研發能力有限，選用價格相對低廉的偶聯劑，或添加量不足，甚至不添加偶聯劑，最終因配方不合理導致產品粘接能不達標。
建筑用單組分丁基防水嵌縫膠存在產品標識不規范、揮發物含量超標、力學性能不達標和粘接性能不達標等方面的質量問題，部分產品存在缺陷，可能會造成消費者誤用產品，或導致產品粘接效果失效、使用壽命降低甚至發生砸傷事件等風險。http://www.51laojia.com/
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