Abstract
The long-term stability and durability of seals are critical for various instruments and types of equipment. For static sealing, an important sealing state, there are currently two representative sealing methods, namely, pre-compressing static sealing and adhesive static sealing. In this paper, the characteristics and shortcomings of these sealing methods are summarized. At present, some static sealing requirements are urgent and difficult. For example, the deterioration of the sealing performance is an important factor which limits the service life of proton exchange membrane fuel cells and redox flow batteries. Therefore, a new method of static sealing whose sealing materials are rubber elastomers is proposed, named alterable static sealing. Then, its sealing processes are proposed. Furthermore, the actual contact area ratio r is used as the standard for sealability. Based on the mathematical model of pre-compressing static sealing, the influence of interface bonding was considered, and the mathematical model of alterable static sealing was established. Moreover, the compensatory effect of alterable static sealing on the static sealing capacity of rubber elastomers was proved.
Highlights
In the field of alterable static sealing, interface bonding between the solid polymer materials of the sealed surfaces could be formed under certain environmental stimuli, meaning that the attenuation of the sealing performance caused by the stress relaxation property of rubber elastomers could be compensated
In view of the disadvantages of the current static sealing methods, a new sealing method is proposed in this study, named alterable static sealing, which is suitable for some complex and difficult sealing requirements
Considering the influence of interface bonding, the mathematical model of pre-compressing static sealing was revised to obtain the mathematical model of alterable static sealing
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. In order to reduce the leakage rate, it is necessary to block leakage channels as much as possible to prevent the sealed medium passing through leakage channels between sealed surfaces and achieve better sealability. In current static sealing methods, reducing surface roughness and increasing the actual contact area of two sealed surfaces have been widely used to block leakage channels. 2021, 12, 237 reducing surface roughness and increasing the actual contact area of two sealed surfaces have been widely used to block leakage channels. Due to their excellent elasticity and resilience, rubber elastohas been reduced to decrease the probability of untouched rough peaks between sealed mers have been widely used as sealing materials. Due to their excellent elasticity and resilience, rubber elastomers have researchers have studied the relationship between the leakage rate and the acbeenMany widely used as sealing materials. Sentative sealing methods of static sealing, which are summarized as follows
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
