为什么不推荐使用单个长MS密封胶胶筒的原因

发布时间 : 2026-1-31 13:10:29
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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.

为什么不推荐使用单个长MS密封胶胶筒的原因

(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 : 2026-1-31 13:10:29
Views:

要根本解决隔环转角处的应力集问题，可以先尝试去掉隔环。如图所小，如上、下MS密封胶胶筒采用同样硬度的邵氏硬度为90橡胶材料，在同样作用力下，均有部分接触套管内赔。隔环转角处的应力集情况已不存在。MS密封胶胶筒内最大等效应力约为6.9 MPa，较优化前降低约20%。但MS密封胶胶筒内赔出现大面积翘曲空间，减少了内表面接触面积，对MS密封胶胶筒的封隔密封可靠性会产生一定影响。这种现象与整体式长MS密封胶胶筒的情况类似，这也是为什么不推荐使用单个长MS密封胶胶筒的原因。

但如果采用不同硬度的橡胶材料，受力较大的MS密封胶胶筒采用较硬的材料，受力较小的MS密封胶胶筒采用较软材料，就可以改善内表面翘曲程度。

根据以上改进思路，取消间隔环。上MS密封胶胶筒继续采用邵氏硬度为90的橡胶材料，而下MS密封胶胶筒改用邵氏硬度为70的橡胶材料。

分析条件不变，如图9所小，在相同的载荷条件下，MS密封胶胶筒变形情况更为理想，MS密封胶胶筒内表面翘曲空间更小。下MS密封胶胶筒较为柔软，可以充分接触套管内赔及心管外赔，在环空形成可靠的密封区域。

如图所在相同的载荷条件下，优化后上MS密封胶胶筒与套管内赔接触部位的接触应力最大约1.6 MPa，接触长度约25 mm。与采用等硬度双MS密封胶胶筒相比，接触应力增加了约45.5%，接触长度增加了约150%。

下MS密封胶胶筒与套管内赔接触部位的接触应力最大约2.8MPa，接触长度约35 mm。与采用等硬度双MS密封胶胶筒相比，接触应力增加了约250%，接触长度增加了约133%。接触应力大小和接触长度明显增加。两个MS密封胶胶筒的总体接触情况明显好于前述等硬度双MS密封胶胶筒的总体接触情况，故密封效果更可靠。

因此，取消隔环，采用不等硬度的橡胶材料制作上下MS密封胶胶筒，可以解决隔环转角部位局部应力集、MS密封胶胶筒内表面翘曲过大的问题，还可以增加MS密封胶胶筒与套管内赔的接触应力和接触面积，提高桥塞的密封可靠性。http://www.sdyuantai.com/

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