Query：
学者姓名：张兆想
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
硫化是橡胶密封成型过程的关键工艺，对橡胶密封产品性能有决定性影响。目前橡胶行业多采用经验式硫化成型方法，对橡胶密封硫化演变过程缺乏理解，难以理论指导橡胶密封实际生产过程。针对这一制约橡胶密封质量提升的薄弱环节，开展了橡胶密封硫化成型过程数值仿真研究。基于胶料的积分型反应动力学模型与变物性参数传热控制方程，建立了橡胶制品热-化学耦合的瞬态仿真模型，实现了橡胶制品成型过程时变温度场及硫化程度场的实时预测，并通过试验验证了模型及求解方法的正确性。进而，仿真分析了典型结构密封件的硫化过程，探讨了模具温度、胶料预热温度和温度波动行为对橡胶密封硫化成型过程的影响规律，最后为橡胶密封实际硫化生产提供了参考。
Keyword ：
加工制造 加工制造 反应动力学 反应动力学 数值分析 数值分析 橡胶密封 橡胶密封 温度波动 温度波动
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 张兆想 , 蔡茂坤 , 任志英 et al. 温度及其波动对橡胶密封硫化过程影响的仿真分析 [J]. | 化工学报 , 2024 , 75 (02) : 715-726 . |
| MLA | 张兆想 et al. "温度及其波动对橡胶密封硫化过程影响的仿真分析" . | 化工学报 75 . 02 (2024) : 715-726 . |
| APA | 张兆想 , 蔡茂坤 , 任志英 , 贾晓红 , 郭飞 . 温度及其波动对橡胶密封硫化过程影响的仿真分析 . | 化工学报 , 2024 , 75 (02) , 715-726 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
As a key process in the rubber sealing molding, vulcanization has a significant impact on the performance of rubber sealing products. However, the rubber industry often adopts empirical vulcanization molding methods, lacking understanding of the evolution of vulcanization, making it difficult to theoretically guide the actual production process of rubber seals. In response to this weak link that restricts the improvement of rubber sealing quality, the paper conducted numerical simulation research on the vulcanization molding process of rubber seals. A transient simulation model for thermal-chemical coupling of rubber products was established based on an integral reaction kinetics model and a heat transfer control equation with variable physical parameters. Real time prediction of the time-varying temperature field and vulcanization degree field during the rubber product forming process was achieved, and the correctness of the model and solution method was verified through experiments. Furthermore, the vulcanization process of typical structural seals was simulated and analyzed, and the influence of mold temperature, rubber preheating temperature and temperature fluctuation behavior on the rubber seal vulcanization molding process was discussed. Finally, suggestions and references were provided for the actual vulcanization production of rubber seals. © 2024 Materials China. All rights reserved.
Keyword ：
Association reactions Association reactions Heat transfer Heat transfer Molding Molding Reaction kinetics Reaction kinetics Rubber Rubber Rubber applications Rubber applications Seals Seals Temperature distribution Temperature distribution Vulcanization Vulcanization
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Zhaoxiang , Cai, Maokun , Ren, Zhiying et al. Numerical analysis of the effect of temperature and its fluctuations on the vulcanization process of rubber seals [J]. | CIESC Journal , 2024 , 75 (2) : 715-726 . |
| MLA | Zhang, Zhaoxiang et al. "Numerical analysis of the effect of temperature and its fluctuations on the vulcanization process of rubber seals" . | CIESC Journal 75 . 2 (2024) : 715-726 . |
| APA | Zhang, Zhaoxiang , Cai, Maokun , Ren, Zhiying , Jia, Xiaohong , Guo, Fei . Numerical analysis of the effect of temperature and its fluctuations on the vulcanization process of rubber seals . | CIESC Journal , 2024 , 75 (2) , 715-726 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
A radial shaft seal (RSS) model is established to reveal mixed thermal lubrication (MTL) and wear performance at speeds ranging from 3000 r/min to 7000 r/min. The model takes into account the initial temperatures of the oil medium and the running time of the RSS to investigate the transition limit of lubrication. Then a thermal fluidsolid method was developed to simulate the lubrication performance of RSS, which shows lubrication transition boundaries through rough micro convex bodies for wear deformation. The RSS deforms wedge-shaped during the wear process and a localized fluid pressure is created on the convex bodies. Considering the wear deformation of the convex bodies due to the wedge effect, the micro performance of the RSS can fully describe the mechanism of the leakage rate. As the dynamic pressure decreases and the leakage rate increases with the temperature of the medium, the RSS lubrication gradually transitions from MTL to EHL. Thus, the initial medium temperature should be considered to maintain the RSS under the mixed lubrication regime with low friction.
Keyword ：
Mixed lubrication Mixed lubrication Radial shaft seal Radial shaft seal Wear simulation Wear simulation Wedge effect Wedge effect
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Fu, Jian , Hu, Baoyan , Ma, Haolin et al. Thermal accumulation effects modelling of investigate radial shaft seal wear and lubrication transition mechanism [J]. | TRIBOLOGY INTERNATIONAL , 2024 , 197 . |
| MLA | Fu, Jian et al. "Thermal accumulation effects modelling of investigate radial shaft seal wear and lubrication transition mechanism" . | TRIBOLOGY INTERNATIONAL 197 (2024) . |
| APA | Fu, Jian , Hu, Baoyan , Ma, Haolin , Yin, Tuyuan , Zhang, Zhaoxiang , Fu, Yongling et al. Thermal accumulation effects modelling of investigate radial shaft seal wear and lubrication transition mechanism . | TRIBOLOGY INTERNATIONAL , 2024 , 197 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Vulcanization molding has a significant impact on dimensional changes of rubber seals. Numerical anal-ysis of this process can improve dimensional accuracy of molded sealing products. In this study, a stress- strain relationship model that considers thermal expansion, cold contraction, and shrinkage caused by a crosslinking reaction under the constraint of a mold boundary was established, a transient analysis method for thermal-mechanical-chemical coupling of the process from rubber seal vulcanization to mold opening was developed, and dimensional changes of the rubber seal in the mold and after cooling were predicted. Results calculated by the model were verified by the production of typical seals. The influences of vulcanization process parameters on changes in molded seal size were numerically ana-lyzed. The numerical results showed that the dimensional shrinkage ratio increased nonlinearly from 3.2 % to 3.8 % when the vulcanization temperature increased from 165 to 185 degrees C, i.e., an increase of 0.206 % for every 1 % increase in shrinkage caused by the vulcanization reaction. These research results can be utilized in the design of vulcanization molds for high-precision rubber seals. (c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keyword ：
Dimensional deformation Dimensional deformation Finite -element analysis Finite -element analysis Process simulation Process simulation Rubber seal Rubber seal Vulcanization Vulcanization
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Zhaoxiang , Guo, Fei , Ke, Yuchao et al. Effect of vulcanization on deformation behavior of rubber seals: Thermal-mechanical-chemical coupling model, numerical studies, and experimental validation [J]. | MATERIALS & DESIGN , 2022 , 224 . |
| MLA | Zhang, Zhaoxiang et al. "Effect of vulcanization on deformation behavior of rubber seals: Thermal-mechanical-chemical coupling model, numerical studies, and experimental validation" . | MATERIALS & DESIGN 224 (2022) . |
| APA | Zhang, Zhaoxiang , Guo, Fei , Ke, Yuchao , Xiang, Chong , Jia, Xiaohong . Effect of vulcanization on deformation behavior of rubber seals: Thermal-mechanical-chemical coupling model, numerical studies, and experimental validation . | MATERIALS & DESIGN , 2022 , 224 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
