RESEARCH ON HYDROGEN AGING TEST APPARATUS FOR LINER OF VEHICLE MOUNTED TYPE &#x02163; HYDROGEN STORAGE CYLINDER

Liu Yitao; Gu Chunlin; Liu Xu; Zheng Shengpeng; Li Xiang

doi:10.19912/j.0254-0096.tynxb.2024-2197

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (8) : 103-109. DOI: 10.19912/j.0254-0096.tynxb.2024-2197

RESEARCH ON HYDROGEN AGING TEST APPARATUS FOR LINER OF VEHICLE MOUNTED TYPE Ⅳ HYDROGEN STORAGE CYLINDER

Liu Yitao^1,2, Gu Chunlin^1,2, Liu Xu^1,2, Zheng Shengpeng³, Li Xiang^1,2

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Abstract

This study introduces a hydrogen aging test apparatus independently developed by the China Special Equipment Inspection and Research Institute （CSEI）. Using this apparatus, a 1000-hour hydrogen aging test was conducted on high-density polyethylene （HDPE）, the liner material of Type Ⅳ onboard hydrogen storage cylinders, under conditions of 85 ℃ and 87.5 MPa, verifying the reliability of the test apparatus. Subsequently, hydrogen permeability tests and mechanical property tests were performed on the hydrogen-aged specimens and the control group specimens. The results show that after 1000-hour aging, the hydrogen permeation resistance of HDPE decreased slightly, increasing the risk of hydrogen accumulation, with the hydrogen permeation coefficient（Pe） increasing by 4.76%, the diffusion coefficient（D） decreasing by 3.08%, and the solubility coefficient（S） increasing by 8.10%. After 1000-hour aging, both the strength and ductility of the HDPE material increased slightly, with the average tensile strength increasing by 6.51% and the nominal elongation at break increasing by 15.33%.

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type Ⅳ hydrogen storage cylinder / hydrogen aging / experimental apparatus / high-density polyethylene / mechanical properties

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Liu Yitao, Gu Chunlin, Liu Xu, Zheng Shengpeng, Li Xiang. RESEARCH ON HYDROGEN AGING TEST APPARATUS FOR LINER OF VEHICLE MOUNTED TYPE Ⅳ HYDROGEN STORAGE CYLINDER[J]. Acta Energiae Solaris Sinica. 2026, 47(8): 103-109 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2197

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