MS密封膠交聯劑添加量的影響

發布時間 : 2022-12-6 17:11:24
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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密封膠交聯劑添加量的影響

(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.

發布時間 : 2022-12-6 17:11:24
Views:

進一步探討甲基三甲氧基硅烷用量對MS密封膠固化速度、拉伸強度、斷裂伸長率以及硫化速率的影響，表4交聯劑添加量對MS密封膠性能的影響性能指標甲基三甲氧基硅烷添加量/%表干時I司/min 15 6 6 7 10 1430min固化厚度/mm 0.15 0.4 0.6 0.65 0.6 0.5拉伸強度/MPa 0.32 0.64 0.81 1.13 1.03 0.96斷裂伸長率/%59.8 77.1 86.5 129.6 99.5 88.8。

從表4可以看出，隨著交聯劑甲基三甲氧基硅用量增多，所制MS密封膠的表干時間先減小后增加，而MS密封膠的力學性能和固化厚度先提升后下降。主要是因為交聯劑少量增加時，可以加快MS密封膠的硫化速率，所以表干時間在減小、固化厚度逐漸增大，同時，交聯劑增多時MS密封膠交聯網點更密集，所以MS密封膠的力學性能拉伸強度與斷裂伸長率均明顯增強。但交聯劑用量超過6份后，交聯劑過剩而沒有完全參與交聯反應，需要未反應的交聯劑揮發后才能表干。并且MS密封膠在過量的交聯劑反應中，固化后的膠液容易脆化，力學粘接性能逐步下降。綜上考慮，作為MS密封膠交聯劑的甲基三甲氧基硅烷，選擇添加質量份為6%時，所制MS密封膠力學性能與表干、固化厚度最佳。www.qiquanonline.com

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