摘要
为深入地研究聚合物在氢环境下的作用机制,以储氢气瓶用内胆材料PA11为研究对象,采用自主搭建的高温高压氢渗透试验系统,探究材料厚度对氢渗透特性的影响规律。通过开发基于Python的时滞法分析程序,集成标准偏差法实现渗透过程稳态判定与滞后时间计算自动化,有效提升数据处理效率与精度。结果表明,材料厚度的增加引起氢渗透系数与溶解系数下降,而氢扩散系数呈现上升趋势,这归因于成型过程中厚度变化导致的微观结构演变。该研究揭示了聚合物材料厚度与氢渗透行为的关联机制,为高压塑料内胆储氢气瓶的材料选型与结构优化提供了理论依据,对提升氢能存储系统的安全性与可靠性具有重要工程意义。
To investigate the mechanism of polymer behavior in hydrogen environments,this study focuses on PA11,the inner liner material for hydrogen storage cylinders.Using a self-developed high-temperature and high-pressure hydrogen permeation testing system,the influence of material thickness on hydrogen permeation characteristics was systematically explored.A Python-based time-lag analysis program was developed to automate steady-state determination and lag time calculation during permeation by integrating the standard deviation method,significantly improving data processing efficiency and accuracy.Results indicate that increasing material thickness leads to a decrease in hydrogen permeability and solubility coefficients,while the diffusion coefficient shows an upward trend.This phenomenon is attributed to microstructural evolution caused by thickness variations during the forming process.The study reveals the correlation between polymer thickness and hydrogen permeation behavior,providing a theoretical basis for material selection and structural optimization of high-pressure polymer-lined hydrogen storage cylinders.These findings hold significant engineering implications for enhancing the safety and reliability of hydrogen energy storage systems.
作者
杨超
张来明
江一凡
孙剑锋
周忠警
骆辉
YANG Chao;ZHANG Laiming;JIANG Yifan;SUN Jianfeng;ZHOU Zhongjing;LUO Hui(China Special Equipment Inspection&Research Institute,Beijing 100029,China;Yangtze River Delta Hydrogen Safety Research Center,Jiaxing 314200,China;Key Laboratory of Safety of Hydrogen Energy Storage and Transportation Equipment,State Administration for Market Regulation,Jiaxing 314200,China;Jiaxing Municipal Bureau of Market Regulation Jiaxing Port Sub‑bureau,Jiaxing 314200,China)
出处
《压力容器》
北大核心
2025年第1期54-60,共7页
Pressure Vessel Technology
基金
国家重点研发计划项目(2021YFB4000803)。
关键词
储氢气瓶
氢渗透
渗透系数
扩散系数
溶解系数
hydrogen storage cylinders
hydrogen permeation
permeability coefficient
diffusion coefficient
solubility coefficient
作者简介
杨超(1988),男,工程师,主要从事压力容器结构完整性的技术研究及国家标准和安全技术的研究工作,通信地址:201601上海市松江区泗泾镇泗祥路518弄37号,E-mail:yangchao11yy@163.com;通信作者:骆辉(1980),男,高级工程师,主要从事承压类特种设备安全性能、无损检测技术等研究工作,通信地址:200949上海市宝山区罗东路1505号中国特种设备检测研究院上海长管拖车检验站,E-mail:495845643@qq.com。
