丁基防水嵌缝密封胶在交变应力或交变应变作用下的力学响应

发布时间 : 2023-3-21 12:13:33
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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.

丁基防水嵌缝密封胶在交变应力或交变应变作用下的力学响应

(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 : 2023-3-21 12:13:33
Views:

目前对丁基防水嵌缝密封胶的研究中大多是准静态的拉伸试验，而丁基防水嵌缝密封胶在交变应力或交变应变作用下的力学响应，更接近材料的实际使用条件。在研究循环载荷对有机丁基防水嵌缝密封胶的力学行为影响方面。研究丁基防水嵌缝密封胶粘接的对接接头在单轴拉伸和扭转循环载荷作用下的单轴棘轮行为和疲劳破坏。试验结果表明，单轴拉伸循环对棘轮应变的影响大于单轴扭转循环，扭转循环的疲劳寿命高于拉伸循环。随着应力幅值和平均应力的增加或循环时间的减少，棘轮应变和棘轮应变速率增加，疲劳寿命降低。粘接对接接头对应力幅值的加载历史具有很强的记忆性。对聚缩醛材料进行了单轴循环载荷试验，研究聚缩醛材料的棘轮和疲劳行为特点。试验结果表明，棘轮应变和棘轮应变率对所施加的平均应力和应力幅值敏感。平均应力和应力幅值的降低会使棘轮应变和棘轮应变率降低。在不同温度下对聚碳酸醋材料进行单轴应力控制的循环测试，研究了材料的时间依赖性和单轴棘轮行为。试验结果表明，随着温度的升高，棘轮应变和棘轮应变率均增大。棘轮应变随着循环圈数的增加而逐渐增加。峰值应力越大，恢复应变越大。

由以上综述可知，对有机丁基防水嵌缝密封胶的研究，需要通过材料物性分析，确定其玻璃化转变温度，还需要研究温度、湿度、加载速率和循环载荷对其力学性能的影响。通过全面的力学行为分析，才能保证材料应用的可靠性。www.sdyuantai.com

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