评价硅烷改性聚氨酯密封胶胶筒的密封性能

发布时间 : 2026-1-27 16:21:38
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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.

评价硅烷改性聚氨酯密封胶胶筒的密封性能

(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 : 2026-1-27 16:21:38
Views:

坐封载荷对最大等效应力的影响

提取常规硅烷改性聚氨酯密封胶胶筒和记忆合金自热解封硅烷改性聚氨酯密封胶胶筒在不同坐封载荷下的最大等效应力，绘制可见，坐封载荷越大，硅烷改性聚氨酯密封胶胶筒最大等效应力越大;记忆合金硅烷改性聚氨酯密封胶胶筒的最大等效应力小于常规硅烷改性聚氨酯密封胶胶筒的最大等效应力，平均降6.33%。可见，在相同载荷下，记忆合金自热解封硅烷改性聚氨酯密封胶胶筒的承压能力更高。

坐封载荷对轴向压缩距的影响

提取常规硅烷改性聚氨酯密封胶胶筒和记忆合金硅烷改性聚氨酯密封胶胶筒在不同坐封载荷下的轴向压缩距，绘制于。可见，轴向压缩距随坐封载荷的增大非线性增大，曲线的斜率逐渐减小。当坐封载荷在70-90 kN时，硅烷改性聚氨酯密封胶胶筒刚开始压缩，处于自由变形阶段，轴向压缩距变化明显。进一步增大坐封载荷(大于90 kN)，硅烷改性聚氨酯密封胶胶筒不断被压实，硅烷改性聚氨酯密封胶胶筒进一步压缩困难，压缩距变化越来越小。相同坐封载荷下，记忆合金硅烷改性聚氨酯密封胶胶筒轴向压缩距小于常规硅烷改性聚氨酯密封胶胶筒轴向压缩距，与套管壁的接触长度更长，因此具有更好的密封性能。

密封效果评价

评价硅烷改性聚氨酯密封胶胶筒的密封性能，除考虑硅烷改性聚氨酯密封胶胶筒与管壁之间的接触应力外，还需要考虑硅烷改性聚氨酯密封胶胶筒与管壁之间的接触长度。采用密封性能系数K来评价记忆合金自热解封硅烷改性聚氨酯密封胶胶筒的密封性能，K值越大，记忆合金自热解封硅烷改性聚氨酯密封胶胶筒的密封性能越好。密封性能系数K的表达式为:式中:F。为记忆合金自热解封硅烷改性聚氨酯密封胶胶筒与套管壁的平均接触应力，MPa;L为记忆合金自热解封硅烷改性聚氨酯密封胶胶筒和套管壁之间的接触长度，mm;K为密封性能系数，MPa .mm。

根据2. 3节中不同橡胶硬度的记忆合金硅烷改性聚氨酯密封胶胶筒与套管间接触应力和轴向压缩距，提取橡胶硬度为70A90A的硅烷改性聚氨酯密封胶胶筒与套管壁的平均接触应力和接触长度，计算硅烷改性聚氨酯密封胶胶筒密封性能系数K。同时根据2. 4节中的记忆合金硅烷改性聚氨酯密封胶胶筒在不同坐封载荷下与套管间的接触应力和轴向压缩距，提取在70一110 kN坐封载荷下硅烷改性聚氨酯密封胶胶筒与套管壁的平均接触应力和接触长度，计算硅烷改性聚氨酯密封胶胶筒密封性能系数K。汇总所有结果至表。http://www.sdyuantai.com/

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上一篇: 记忆合金自热解封丁基防水嵌缝胶胶筒密封性能分析

下一篇: 一种具有辅助解封功能的记忆合金MS密封胶胶筒