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溫度變化對(duì)MS密封膠分子鏈段構(gòu)象變化的影響
- 發(fā)布時(shí)間 : 2025-9-28 22:32:07
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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.
溫度變化對(duì)MS密封膠分子鏈段構(gòu)象變化的影響
(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(fā)布時(shí)間 : 2025-9-28 22:32:07
- Views:
Information
膠條的舊表征與分析分別對(duì)膠條的外露面、內(nèi)表而進(jìn)行表并與MS密封膠本體進(jìn)行對(duì)比，結(jié)果如圖所示圖3膠條的外露面、內(nèi)表面及本體的FT-IR曲線由圖3可知:膠條內(nèi)表面的曲線與MS密封膠本體的曲線基本保持一致，老化降解不明顯;在外露面曲線中，3337.7cm處為N-H的伸縮振動(dòng)寬峰，2972.8--2872.8cm處的(:-H伸縮振動(dòng)強(qiáng)峰消失，1735.2cm處為C=)的伸縮振動(dòng)窄峰，1221.9cm處為C-C的伸縮振動(dòng)窄強(qiáng)峰，1103.8cm處C的伸縮振動(dòng)窄強(qiáng)峰明顯減弱_、綜L幾所述，1UMS密封膠在輻照、濕氣、溫度和化學(xué)介質(zhì)等外界環(huán)境的共同作用下發(fā)生了化學(xué)降解，降解產(chǎn)物為梭酸鹽、醇、月安、二氧化碳等n-Hi中部膠層的力學(xué)性能測(cè)試與分析將試片與MS密封膠原始數(shù)值進(jìn)行對(duì)比，結(jié)果如圖所示。由lxI4可知:中部膠層的拉伸強(qiáng)度平均仇為5.75M1a，相比原始數(shù)值減小了4.20斷裂伸長率平均值為353%.相比原始數(shù)值減小21.5%這是由聚合物分子鏈段構(gòu)象變化引起的，而非化學(xué)鍵斷裂造成的。車輛在行駛的過程中，除經(jīng)過隧進(jìn)或會(huì)車時(shí)車窗玻璃受到法向方向的沖擊力，引起MS密封膠受到外力作外;由于MS密封膠兩側(cè)基材(玻璃與鋁合金)熱膨脹系數(shù)不同，運(yùn)行環(huán)境溫度與施T溫度發(fā)生變化，MS密封膠就會(huì)受到外力作用，使得MS密封膠分子鏈段構(gòu)象發(fā)生變化，引起MS密封膠力學(xué)性能的變化，并且溫度變化對(duì)MS密封膠分子鏈段構(gòu)象變化的影響是長期的綜上所述，經(jīng)過一段時(shí)間的運(yùn)行使后，MS密封膠的強(qiáng)度降低，韌性下降。http://www.www.nxqes.com/
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