压力容器2025，Vol.42Issue(1)：54-60,7.DOI:10.3969/j.issn.1001-4837.2025.01.007
Ⅳ型储氢气瓶塑料内胆材料厚度对渗透性能的影响及渗透参数计算方法研究
Study on the effect of polymer liner thickness on hydrogen permeation performance and calculation methods for permeation parameters in type Ⅳ hydrogen storage cylinders
摘要
Abstract
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.关键词
储氢气瓶/氢渗透/渗透系数/扩散系数/溶解系数Key words
hydrogen storage cylinders/hydrogen permeation/permeability coefficient/diffusion coefficient/solubility coefficient分类
机械工程引用本文复制引用
杨超,张来明,江一凡,孙剑锋,周忠警,骆辉..Ⅳ型储氢气瓶塑料内胆材料厚度对渗透性能的影响及渗透参数计算方法研究[J].压力容器,2025,42(1):54-60,7.基金项目
国家重点研发计划项目(2021YFB4000803) （2021YFB4000803）
