PRPA-WPU硅烷改性聚氨酯密封胶的剥离强度

发布时间 : 2022-11-7 11:37:25
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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.

PRPA-WPU硅烷改性聚氨酯密封胶的剥离强度

(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 : 2022-11-7 11:37:25
Views:

硅烷改性聚氨酯密封胶水性聚氨醋本身具有一定的粘结性能，PRPA交联剂的引人使得聚合物分子堆砌方式发生改变，因此可能对聚氨醋的粘结性能产生影响，图8为PRPA用量对硅烷改性聚氨酯密封胶离强度的影响.从图8可以看到，当PRPA的用量大于3%时，剥离强度开始下降.这是因为随着PRPA用量的增加，交联位点逐渐增加，使得分子链的交联程度增加，快速形成致密的交联网络结构，体系内聚能增大，胶赫剂的粘接性增强;而且PRPA中含有极性基团，其极易与分子链上的基团形成作用力，分子交联更加紧密，减小了水分子对粘结性能的影响，剥离强度增大.当PRPA用量为1. 0 wt.%和2. 0 wt.%时，PRPA-WPU硅烷改性聚氨酯密封胶的剥离强度分别可达3. 221N/mm和3. 879 N/mm，可用作鞋包硅烷改性聚氨酯密封胶(剥离强度)2. 0 N/mm)。www.sdyuantai.com

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下一篇: 经PRPA交联改性后的MS密封胶热稳定性有一定程度提升

上一篇: PRPA用量对聚氨酯密封胶胶膜耐水性的影响

下一篇: 经PRPA交联改性后的MS密封胶热稳定性有一定程度提升