純E-51和PADE-10%MS密封膠的TG分析

發(fā)布時(shí)間 : 2024-10-10 10:39:51
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.

純E-51和PADE-10%MS密封膠的TG分析

發(fā)布時(shí)間 : 2024-10-10 10:39:51
Views:

Information

由PADE-0和PADE-10%MS密封膠都沒有表現(xiàn)出明顯的放熱峰，表明各個(gè)體系固化完全。隨著PADE的加人，體系的雙不斷降低，從93.1 ℃降低到81.6 ℃。這可能是由于長(zhǎng)柔鏈結(jié)構(gòu)提高固化體系的鏈滑動(dòng)能力，體系的分子鏈松弛所需的能量更少，因而玻璃化轉(zhuǎn)變溫度降低。

MS密封膠的熱穩(wěn)定性受到環(huán)氧樹脂和固化劑的分子量、固化物的交聯(lián)密度和填料等多種因素的影響，而這此因素可能會(huì)阻礙分子鏈段的運(yùn)動(dòng)。PADE摻人量為。和10%時(shí)MS密封膠的熱穩(wěn)定性變化趨勢(shì)，如圖11所示。

由可知:MS密封膠的分解分為3個(gè)階段:第一階段為90200 ℃，該階段主要為水分的蒸發(fā)和填料層間的有機(jī)物揮發(fā)引起。第二階段在350450 ℃之間，且在370 ℃左右有一個(gè)快速失重點(diǎn)。這可能是主鏈開始裂解，體系發(fā)生端基和側(cè)基的消除反應(yīng)，然后失重速率相對(duì)穩(wěn)定。第三個(gè)階段在500700 ℃之間，這可能是因?yàn)闅溲趸X填料分解的原因。MS密封膠的TG數(shù)據(jù)如表3所示。http://www.caffertyclinic.com/

Scan the QR code to read on your phone

上一篇: MS密封膠改性E-51基體樹脂的力學(xué)性能分析

下一篇: 純E-51和PADE-10%丁基防水嵌縫膠的斷裂面分析

上一篇: MS密封膠改性E-51基體樹脂的力學(xué)性能分析

下一篇: 純E-51和PADE-10%丁基防水嵌縫膠的斷裂面分析