增塑剂含量对MS密封胶的自由体积及自由体积分数的影响

发布时间 : 2024-9-28 18:06:57
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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.

增塑剂含量对MS密封胶的自由体积及自由体积分数的影响

(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 : 2024-9-28 18:06:57
Views:

自由体积均随之升高。且在相同温度下，自由体积大小顺序均为:MS密封胶/白油>MS密封胶/甲基硅油>MS密封胶/双端乙烯基硅油。此外，自由体积越大，越有利于分子链的运动和伸展，故白油容易发生扩散。同时从图巧中可以看出，随着温度升高，各混合体系的自由体积分数均增大。这说明温度的升高使增塑剂分子的运动能量提高，与MS密封胶分子间的距离增加，增加了分子的运动空间，从而更有利于分子发生扩散。此外，在相同温度下，自由体积分数的大小顺序也均为:MS密封胶/白油>MS密封胶/甲基硅油>MS密封胶/双端乙烯基硅油。

综合以上两方面分析:随着温度升高，MS密封胶与增塑剂分子间的相互作用减弱，使增塑剂扩散能力增强。且随着温度的升高，各混合体系内的自由体积及自由体积分数均随之增加，这为增塑剂分子的扩散提供了有效的运动空间，因此使增塑剂更易在体系中发生扩散。

各混合体系随增塑剂含量变化的自由体积及自由体积分数，如图16所示。

由图16可知:随着增塑剂含量的增加，各混合体系的自由体积和自由体积分数均随之升高。在相同条件下，体系的自由体积及自由体积分数的大小顺序均为:MS密封胶/白油>MS密封胶/甲基硅油>MS密封胶/双端乙烯基硅油。这说明增塑剂含量的升高不仅使增塑剂分子链本身更易伸展和转动，而且为增塑剂分子增加了有效运动空间。http://www.sdyuantai.com/

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