粘附促进剂用对MS密封胶性能的影响

发布时间 : 2024-11-10 12:11:20
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.

粘附促进剂用对MS密封胶性能的影响

(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 : 2024-11-10 12:11:20
Views:

端硅烷基聚氨醋MS密封胶中的SPU预聚体的封端基团，是一种含官能基的硅烷基团，配方中再加人带有官能基的硅烷偶联剂，上述两种因素的结合，产生“协同效应”，导致了MS密封胶对金属、玻璃、塑料等基材具有良好的粘接性能。试验选用了A-1120,A-1110为粘附促进剂，并以它们的用量对MS密封胶性能影响进行了研究。

通过选用含单氨基的A-1110和含双氨基的A-1120硅烷偶联剂相比较，对MS密封胶的物理性能、粘接性能基本上是相同的，只是固化时间上略有差异。用量从1份增加到3份对物理性能和粘接性能亦无大的影响，铝片与玻璃的粘接均为内聚破坏，但随着用量的增大，MS密封胶固化时间(失粘时间)在缩短，说明氨基含量影响着MS密封胶的固化速度。

催化剂用对MS密封胶适用期固化期的影响。众所周知，MS密封胶是在湿气和催化剂的存在下，发生水解、交联反应生成弹性体，这就给双组份MS密封胶B组份中催化剂、H20用量选择带来很大的空间，合适用量不但利于MS密封胶深层次的快速固化，而且给选定最为合适的适用期和指干时间提供了变数。催化剂、H20用量对适用期、指干、固化期的影响。

通过对催化剂、H20用量试验是完全可以控制双组份固化速度，达到快速固化粘接密封的目的。

结论

(1)选用了端基为二烷氧基硅烷的SPU预聚体为主剂，提高了A组份贮存稳定性。

(2)对B组份中催化剂、H尹用量进行了最佳选择，适用期可控制在30}SOmin,2}3h可完全固化。

(3)A,B组份粘度低，手工易混，混合好的胶料不流淌、不下垂、易于施工。

(4)对金属铝、玻璃、PVC等材质有良好粘接性和耐老化性。

(5)SPU聚合物价格较低，研制MS密封胶含量低(14.5%)，所以MS密封胶成本低，目前在中空玻璃第二道密封中已得到了良好的应用。http://www.sdyuantai.com/

Scan the QR code to read on your phone

上一篇: 硅烷改性聚氨酯密封胶良好的物理机械性能和贮存的稳定性

下一篇: 丁基防水嵌缝胶灌缝在道路养护中的应用

上一篇: 硅烷改性聚氨酯密封胶良好的物理机械性能和贮存的稳定性

下一篇: 丁基防水嵌缝胶灌缝在道路养护中的应用