Research on Key Factors of Sealing Performance of Combined Sealing Ring

Hu, Cheng; Chen, Xinyuan; Chen, Xiaolan; Liu, Hucheng

doi:10.3390/app12020714

Cited by 12 publications

(5 citation statements)

References 18 publications

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“…The silanization reaction index is an important indicator of silica silane modification. The larger the silanization reaction index, the higher the degree of silanization reaction and the better the overall performance of the rubber compound [27][28][29][30][31][32][33][34][35].…”

Section: Testing Methodsmentioning

confidence: 99%

The Effect of Different Dosages of TESPT on Metal Friction and Metal Wear in the Mixing Process

Han

Wang

et al. 2022

Polymers

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Studies show that the dispersion of silica in the mixing process is an important factor affecting the wear of the mixing chamber. As the most important mixing equipment, the long operational life of the internal mixer will cause wear in the rotor and chamber of the internal mixer. This wear increases the gap between the rotor and chamber of the internal mixer, reduces the mixing performance, weakens the dispersion of packing, and adversely affects the quality of the rubber produced. Therefore, it is important to investigate the metal wear in the mixing process. This article examines the effect of the addition of different amounts of silane coupling agents on metal friction and wear during the mixing process. The silane coupling agent has two functions. The first is to make the surface of the silica hydrophobic, enabling it to combine the inorganic matrix of the silica with the organic matrix of the rubber; the second is to inhibit the aggregation of the silica in the rubber. In the present study, we examine (1) the influence of different formulations on the friction and wear of the metal in the mixing chamber from the perspective of formulation technology, and (2) the correlation between corrosion wear and abrasive wear. It is found that a rubber compound with 6 phr of TESPT has the lowest metal wear and that adding more TESPT does not affect the degree of metal wear. As the amount of TESPT increases, the proportion of abrasive wear decreases, while the proportion of corrosive wear increases, reaching a maximum of 20.7%. In our study we found that abrasive wear is the predominant wear mechanism of a rubber compound on metal. In contrast, the corrosive wear caused by high-temperature water vapor still occupies a large proportion of the total wear. Therefore, improving silica dispersion and reducing abrasive wear are extremely important methods to protect the mixing chamber. However, the corrosion of metals by high-temperature water vapor should also be considered when preparing for the mixing process.

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Section: Testing Methodsmentioning

confidence: 99%

The Effect of Different Dosages of TESPT on Metal Friction and Metal Wear in the Mixing Process

Han

Wang

et al. 2022

Polymers

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“…In theory, leakage can be prevented when the maximum contact stress is greater than the media pressure. Moreover, the greater the contact stress, the better the sealing effect [18] . However, excessive contact stress can increase power consumption and aggravate wear, and thereby affect service life.…”

Section: Leningrader Seal Performance Analysismentioning

confidence: 99%

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

YANG,

WANG,

WANG

et al. 2024

Wuhan Univ. J. Nat. Sci.

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In order to improve the performance and service life of the Leningrader seal of the Stirling engine piston rod, interference, preload and friction coefficient were taken as influencing factors, and the curved surface response method was adopted to reduce the contact stress of sealing surface and von Mises stress of the sealing sleeve as the response index, with the optimization goal of reducing wear and extending life. The above three key parameters are analyzed and optimized, the influence of each parameter on the sealing performance and service life is obtained, and the best combination scheme of the three is determined. The results show that the interaction between pretightening force and interference fit has the greatest impact on contact stress. The interaction between interference fit and friction coefficient has the most significant effect on von Mises stress. The optimized parameters can reduce the maximum contact stress and maximum von Mises stress of the sealing sleeve by 26.3% and 20.6%, respectively, under a media pressure of 5-9 MPa. Test bench verification shows that the leakage of the optimized sealing device in 12 h is reduced by 0.44 cc·min-1 (1 cc=1 cm3). The wear rate of the sealing sleeve is 1.08% before optimization and 0.45% after optimization, indicating that the optimized parameters in this paper are effective.

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“…According to the proportion of the silanization reaction, the high-temperature ethanol–water mixed vapor was sprayed onto the metal surface. The mixing conditions of the mixer were qualitatively simulated [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ].…”

Section: Mechanistic Studymentioning

confidence: 99%

Research on Friction and Wear Properties of Rubber Composites by Adding Glass Fiber during Mixing

et al. 2022

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GF/rubber composites have sound insulation characteristics, heat resistance, good corrosion resistance, and high mechanical strength. The compounding machine’s long working hours will inevitably wear the metal on the end face of the compounding machine. The wear of the end face metal will increase the gap between the chamber and the end face, which will lead to material leakage, reduce the mixing effect, and eventually affect the performance of GF/rubber composites. To ensure the implementation of GF/rubber composites, it is necessary to study the frictional wear behavior of GF/rubber composites on metals. In this paper, the effect of blending rubber with different amounts of GF on the frictional wear of metal on the end face was analyzed from the perspective of the formulation process, and the ratio of corrosion wear and abrasive wear was calculated for the first time.

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Research on Key Factors of Sealing Performance of Combined Sealing Ring

Cited by 12 publications

References 18 publications

The Effect of Different Dosages of TESPT on Metal Friction and Metal Wear in the Mixing Process

The Effect of Different Dosages of TESPT on Metal Friction and Metal Wear in the Mixing Process

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

Research on Friction and Wear Properties of Rubber Composites by Adding Glass Fiber during Mixing

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