MS密封膠A和B組份的制備

發布時間 : 2025-8-29 12:11:23
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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.

MS密封膠A和B組份的制備

(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 : 2025-8-29 12:11:23
Views:

隨著新材料領域的發展，越來越多的傳統金屬、陶瓷材料被高分子材料代替。高分子材料具有易燃的性質，因此對高分子材料阻燃的要求越來越高。傳統的MS密封膠一般采用在體系中引人鹵素實現阻燃。鑒于目前的環保要求，無鹵阻燃的MS密封膠是未來發展的方向。

本研究選用聚己內醋二元醇、聚己內醋三元醇、蓖麻油、消泡劑、除水劑、無鹵阻燃填料調配出MS密封膠的A組份。利用異氰酸醋類的固化劑和環氧稀釋劑(聚丙二醇二縮水甘油醚)配合使用調配出MS密封膠的B組份，制備出雙組份無鹵阻燃柔性MS密封膠，以期應用在照明電器的元器件上。

勃度按照GB/T 2794-1995采用旋轉貓度計進行測定，4#轉子，25℃。硬度按照GB/T 531.1-2008采用邵氏A硬度計進行測定。結構特征采用紅外光譜儀進行表征。凝膠時間:將灌封膠放在(23士2)℃的條件下，在200 mL一次性塑料杯中取A組分50 g和B組分lOg，混合均勻，漆中放置一帶鉤的鐵絲，開始計時，每隔3 min抽動鐵絲，直至凝膠，停止計時。

A組份的制備:將聚己內酷二元醇(5份)、聚己內醋三元醇(10份)、蓖麻油(15份)、消泡劑(0.3份)、含磷阻燃樹脂(6份)、導熱填料(60份)加人分散罐中，開啟快速攪拌槳調至800 r/min，開啟慢速攪拌機，邊攪拌邊加熱，加熱釜的外面采用冷熱油循環控制溫度。油浴溫度控制在170℃，料溫保持在(120士2)0C。開啟真空，控制真空度在1 000 Pa以下，當料溫上升到120℃時開始計時，邊抽真空邊分散2h。抽真空結束后通冷卻油將料溫降到95℃，加人環氧樹脂(2份)和稀釋劑(2份)攪拌5 min，繼續抽真空40 minxB組份的制備:將PM-200 ( 90份)和環氧稀釋劑(10份)在常溫下混合，用分散機分散(轉速為400 r/min，攪拌時間為10 min )，分散均勻后裝桶備用。MS密封膠(命名為116P灌封膠):將A組份和B組份按5:1混合均勻，在常溫下固化48 h或在80 0C固化2 h。http://www.amqr.cn/

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