硅烷改性聚氨酯密封胶层龟裂软化问题
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添加固化剂和偶联剂对MS密封胶吸水率的影响
- 发布时间 : 2023-3-20 12:29:54
- 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.
添加固化剂和偶联剂对MS密封胶吸水率的影响
(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 : 2023-3-20 12:29:54
- Views:
Information
利用液体端氨基丁睛橡胶(ATBN)和环氧树脂制备得到一系列MS密封胶，该MS密封胶具有优良的耐高低温和耐压缩性能。但在对其性能研究中，实验数据表明其存在吸水率过高问题。本文研究了改换不同分子结构环氧树脂，并添加固化剂和偶联剂对MS密封胶吸水率的影响。实验数据表明，采用Jew-0120、壬基酚和钦酸醋偶联剂931后，MS密封胶的吸水率大幅度下降。
MS密封胶是一种用于填充孔和接缝之间间隙的粘贴材料，固化结成一个整体，具有防水、防尘、防雾的功能。应用于建筑行业、汽车产业、机械制造、船舶制造等领域，在各行建设中有着举足轻重的作用。
MS密封胶密封胶具有很强的胶粘性、耐磨性、力学性能、绝缘性、稳定性等等，但它的缺点也是存在的，例如韧性不好，脆性大等等。通过韧性环氧树脂直接固化液体端氨基丁睛橡胶，其中韧性环氧树脂采用缩醇醚作分子主链，分子柔韧性好，制备的MS密封胶强度大、伸长率高，耐压缩能力优异，耐高低温性能好。
本课题基于端氨基丁睛橡胶和环氧树脂制备的MS密封胶研究，由端氨基丁睛橡胶用环氧树脂固化而成制备的MS密封胶强度大、伸长率高、耐压缩能力优异、耐高低温性能好，但也存在吸水率高的问题。此次课题旨在探究改换不同分子结构环氧树脂，并添加固化剂和偶联剂对MS密封胶吸水率的影响。
按照表2配方，用高速搅拌机充分搅拌均匀，然后用小型三辊研磨机研磨2遍，制备A组分、B组分和B1组分。再按照表3配方，将各组分用高速搅拌机充分搅拌均匀脱气后，倒人聚四氟乙烯模具中成膜，膜厚2mm，成膜条件为50℃下固化48小日寸。
吸水率测试:将制备好的膜剪切成为lcm正方形样品泡水后，使用称量天平(精确到O.OIg)，精测测量每段时间内样品的吸水量，每个配方测三组数据。www.sdyuantai.com
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