Journal of Physics: Conference Series最新文献_第3页

Service performance of nitrile rubber sealing ring under 70 MPa high-pressure hydrogen 丁腈橡胶密封环在 70 兆帕高压氢气下的使用性能

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012010

Xiaozhen Lei, Bin Zheng

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Study on the effect of film-forming agent composition on moisture and heat resistance of basalt fiber composites 成膜剂成分对玄武岩纤维复合材料耐湿性和耐热性影响的研究

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012011

Hechen Liu, Hong Yu, Mingjia Zhang, Peng Wu

{"title":"Study on the effect of film-forming agent composition on moisture and heat resistance of basalt fiber composites","authors":"Hechen Liu, Hong Yu, Mingjia Zhang, Peng Wu","doi":"10.1088/1742-6596/2838/1/012011","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012011","url":null,"abstract":"Resistance to hygrothermal aging is the key to the popularization and application of basalt fiber composites in the field of electrical equipment, so it is crucial to develop fiber surface-modified coatings suitable for basalt fibers with excellent hygrothermal resistance. In this study, the performance changes of basalt fiber composite samples treated with four types of surface coatings under artificially accelerated hygrothermal aging test were comparatively analyzed, and the mechanism of different components in the surface coatings was further analyzed. The results showed that the use of epoxy resin emulsion co-mingled with acrylic emulsion as the film-forming agent could significantly improve the mechanical properties of the samples. The use of epoxy resin emulsion co-blended with polyurethane emulsion as the film-forming agent improved the insulating properties and moisture and heat resistance of the samples. Further, the use of 5:1:1 epoxy emulsion, acrylic emulsion, and polyurethane emulsion co-blended as the film-forming agent component can ensure the insulation and hygrothermal resistance of the samples while taking into account the mechanical properties. After 120 hours of wet-heat aging, the breakdown field strength was increased by 22%, leakage current and dielectric loss angle was increased by 10%, and the mechanical properties were also significantly improved compared with the sample with epoxy emulsion as the main film-forming agent. In summary, through the compounding of the film-forming agent emulsion components, the optimization of the moisture and heat resistance of basalt fiber composites can be achieved, and the use of the mass percentage of 5:1:1 for the three types of emulsions blended to prepare the fiber surface coatings is more suitable for the treatment of basalt fibers to prepare the electrician’s equipment.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research and optimization of heat transfer characteristics of heat pipe-coupled phase change energy storage system 热管耦合相变储能系统传热特性的研究与优化

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012032

Renping Zhang, Zuxiang Zhou

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Performance and mechanism analysis of EMA-GMA modified PMMA/ASA alloy EMA-GMA 改性 PMMA/ASA 合金的性能和机理分析

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012018

Zhaohui Gu, Hui Wang

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Analysis of seismic damage mechanism of capacitor 电容器地震破坏机理分析

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012037

Qingyun Min, Zhihu Hong, Dexu Zou, Fangrong Zhou, Longchang Zhu, Weiju Dai, Jingyi Yan, Haoruo Sun, Qiang Xie

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Comprehensive energy system planning with a focus on electric-thermal load correlations 全面的能源系统规划，重点关注电力与热负荷的相关性

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012027

Chonglei Ding, Xiaoming Zhang, Guangzhe Liang, Jiaoyang Feng

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Corrosion of 316 SS in chloride molten salt for thermal energy storage: Inhibitory effects of Al powder 用于热能储存的 316 SS 在氯化物熔盐中的腐蚀：铝粉的抑制作用

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012013

Tianjiao Li, Ming Zhu, Peng Deng, Anqi Chen, Haitong Yan, Han Yi

{"title":"Corrosion of 316 SS in chloride molten salt for thermal energy storage: Inhibitory effects of Al powder","authors":"Tianjiao Li, Ming Zhu, Peng Deng, Anqi Chen, Haitong Yan, Han Yi","doi":"10.1088/1742-6596/2838/1/012013","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012013","url":null,"abstract":"MgCl2-KCl-NaCl is regarded as one of the most prospective high-temperature thermal energy storage mediums and heat transfer fluids (HTF) for 3rd generation concentrated solar power (CSP) systems. However, high corrosion to alloys limits its application. In this paper, corrosion tests were conducted on 316 SS, in MgCl2-KCl-NaCl at 800°C with different content (0 wt.%,1 wt.%, and 10 wt.%) of Al powder addition as a corrosion inhibitor. The impact of Al powder was assessed through electrochemical methods, specifically impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). Following corrosion tests, the morphologies and phase compositions of 316 SS were determined by using scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS) and X-ray diffraction (XRD). The addition of Al powder can significantly reduce the corrosion current density of 316 SS in MgCl2-KCl-NaCl at 800°C, which was 183.29 times higher than that with 10 wt.% without Al addition. Al and the degree increased with increasing content of Al. With the addition of 1 wt.% Al, the thickness of the diffusion layer is significantly reduced, which was 54.6 μm (100 h), 275.1 μm (200 h), 370.4 μm (300 h), and 500 μm (400 h), respectively. When the addition of Al reaches up to 10 wt.%, the inwards diffusion of Al caused the formation of Al enriched layer, which was identified as the FeAl phase, on the surface of 316 SS during the high-temperature corrosion processes. The thickness of the Al enriched layer was associated with the diffusion time of Al, and its depth was 40.4 μm (100 h), 45.3 μm (200 h), 103.5 μm (300 h), and 139.5 μm (400 h).","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of radiant air-conditioning systems combined with two different types of solar-powered dehumidification methods 辐射空调系统与两种不同类型的太阳能除湿方法相结合的比较分析

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012038

Gang Li, Yixuan Liao, Yubo Dou, Jiaqi Sun, Jia Nan, Jinlong Chen

引用次数: 0

Acoustic emission spectrum characteristics of structural coal destruction in negative pressure environment 负压环境下结构煤破坏的声发射频谱特征

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012023

Aohan Zhao, Yankun Ma, Deren Chen, Dengke Wang, Meng Wang

{"title":"Acoustic emission spectrum characteristics of structural coal destruction in negative pressure environment","authors":"Aohan Zhao, Yankun Ma, Deren Chen, Dengke Wang, Meng Wang","doi":"10.1088/1742-6596/2838/1/012023","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012023","url":null,"abstract":"The uniaxial compression experiments under a low-pressure environment were performed by using structural coal samples. The frequency domain response characteristics of coal mass failure under loading in a low-pressure environment were acquired by FFT transformation and wavelet packet decomposition. The results show: As the loading stress of coal increases, the AE spectrum becomes more abundant, and the whole AE spectrum shows a left-shift trend. When the gas pressure increases, the acoustic emission signals change from low-frequency high-energy to high-frequency low-energy, the frequency band gradually narrates, and the spectrum changes from complex multi-peak shape to single-peak shape. As stress increases, the proportion of energy in the band 0-4.38 kHz gradually increases, while that in other bands gradually decreases. The energy response to stress changes in the two frequency bands of 2.92-4.38 kHz and 4.38-5.84 kHz is the most obvious. When the pressure changes, the energy in three frequency bands of 2.92-4.38 kHz, 4.38-5.84 kHz, and 7.3-8.76 kHz present an evident response trend with the pressure change, and the response trend (increase) of the latter two is exactly opposite (decrease) to that of the former. This phenomenon indicates that 2.92-4.38 kHz and 4.38-5.84 kHz are the characteristic frequency bands of the coal fracture process. The findings of this research offer crucial foundational data to support the monitoring and early warning of coal and gas outburst hazards.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of microwaves on the repair of lead-acid batteries 微波对铅酸蓄电池修复的影响

Journal of Physics: Conference Series Pub Date : 2024-09-01 DOI: 10.1088/1742-6596/2838/1/012031

Desheng Hou, Fengxiu Li, Yiming Zhang, Jianwen Luo, Haoran Wu, Dezhi Gou, Zhengming Tang

{"title":"Effect of microwaves on the repair of lead-acid batteries","authors":"Desheng Hou, Fengxiu Li, Yiming Zhang, Jianwen Luo, Haoran Wu, Dezhi Gou, Zhengming Tang","doi":"10.1088/1742-6596/2838/1/012031","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012031","url":null,"abstract":"Lead-acid batteries are widely used in the automotive industry, and a large amount of waste lead-acid batteries cause enormous pressure on resources and the environment. Repairing aging lead-acid batteries is an effective way to solve this problem. Due to the fact that microwaves can affect most chemical reactions and promote their progress, this paper will study the repair effect of microwaves on lead-acid batteries by combining theory and experiment methods. By analyzing the reaction principle of lead-acid batteries, a multi-physics model is established to study the influence of microwaves on the lead-acid batteries, and an experimental system is built to test the changes in capacity and final charge voltage of lead-acid batteries under the radiation of microwaves. The results demonstrate that microwave treatment significantly enhances the capacity of aging lead-acid batteries, particularly when the initial capacity is slightly above 50% of the rated capacity. Moreover, heating the battery with hot air alone hardly affects its capacity. This study reveals that microwaves have reparative effects on lead-acid batteries, providing a new method for repairing aging batteries.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0