【摘要】 设计了一种基于聚乙烯材料的高阻隔、高强度、轻质非金属输氢管道，通过设计开发具有内管层、阻隔层、增强层和外保护层，有效避免了金属管道的氢脆问题，同时克服了承受压力有限及气体渗透的缺点。其中内管层及外保护层由聚乙烯（PE）树脂构成，阻隔层由铝箔、乙烯-乙烯醇共聚物（EVOH）及改性后的线形低密度聚乙烯（PE-LLD）组成，增强层由涤纶丝构成。结果表明，开发的输氢管道具有承压结构强度高、盘卷柔韧性能好、高阻隔、高强度，且抗气体渗透严密、使用寿命长等特点，能够满足氢能输送的要求。将为氢气输送行业提供一种操作安全、持久且高效的输氢管道方案，进而对氢能的能量转换及未来价值链的发展做出重要贡献。更多还原

【Abstract】 This study presents the development of a novel non-metallic, multilayer composite pipeline designed for hydrogen transport. Constructed primarily from high-molecular-weight polyethylene, the pipeline features a four-layer structure: an inner tube, a barrier layer, a reinforcement layer, and an outer protective layer. This design effectively mitigates hydrogen embrittlement, a critical limitation of metallic pipelines, while simultaneously overcoming the low-pressure resistance and high gas permeability of conventional polymers. The inner and outer layers are composed of polyethylene resin, the barrier layer combines aluminum foil with a blend of ethylene-vinyl alcohol copolymer and modified linear lowdensity polyethylene, and the reinforcement layer consists of high-tenacity polyester yarn. The resulting structure exhibits high mechanical strength, excellent flexibility for coiling, superior barrier properties, and long-term durability. This work provides a safe, efficient, and lightweight pipeline solution that supports the growing infrastructure needs of the hydrogen energy sector.更多还原