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成果報告書詳細
管理番号20170000000130
タイトル*平成28年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素ステーション用低コスト機器・システム等に関する研究開発 水素ステーションの高圧水素用ホースとシールシステムに関する研究開発
公開日2017/5/9
報告書年度2016 - 2016
委託先名国立大学法人九州大学
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title:Research and Development of Technology for Hydrogen Utilization/Research and Development of Low-cost Equipment and System for Fuel Cell Vehicles and Hydrogen Stations/Research and Development of Low-cost Equipment, System and their Materials for Hydrogen Stations/Research and Development of High-pressure Hydrogen Hose and Sealing System for Hydrogen Stations. (FY2013-FY2017) FY2016Annual Report.

In order to develop the resin hose for 82 MPa hydrogen gas, we examined hydrogen content and volume change after high-pressure hydrogen exposure for candidate resin materials. According to the discussion at the research group of elastomers for hydrogen equipment, the society of rubber science ant technology, Japan, we have selected candidate materials for hoses, type 4 tank liners and hydrogen equipment, such as polyolefins, a series of PA, poly(vinyl alcohols), fluorine-containing polymers and some engineering plastics. According to the results of hydrogen content after 90MPa hydrogen exposure of several types of polyethylene, their hydrogen contents are proportional to their density and degree of crystallinity. Hydrogen molecules can be penetrated into the amorphous region in the polyethylene.
We discussed and decided to focus the practical model compound as the hydrogen seals. According to the results of hydrogen content and volume change after hydrogen exposure for series of model composites for NBR and EPDM, the effect of additives or fillers, such as particle size and surface area of fillers, are clarified. We discussed about the design guideline for low temperature hydrogen seal rubber materials.
We also examined the hydrogen content and volume change after 30, 50, 90MPa hydrogen exposure for NBR-90 of JIS B2401-1 manufactured by 10 rubber companies. We find two series of NBR-90 composites, one series of NBR-90 show small hydrogen content in terms of change of their structure of reinforcement filler network.
Friction and wear properties of carbon-filled PTFE and PEEK in high temperature and high pressure hydrogen were obtained. Friction and surface damages of rubbers under reciprocal tangential loading in various gases including hydrogen were studied, and dependence of surface fatigue life on load, speed, gas and temperature was found. Also, friction and wear properties of commercial rubbers were obtained with the reciprocal tangential loading method.
We established the evaluation protocol of high-pressure hydrogen hose. 90 MPa hydrogen impulse test that duration is less than 30 seconds at ー-40°C. We try to understand the dispersion of the cycle life results by Weibull analysis. According to the results, the safety factor of the cycle life examined this protocol can be discussed. In order to clarify the relationship between cycle life at the hydrogen station and test results by this protocol, we measure the residual stress in the inner layer of hoses after test and after use at the hydrogen station by photoelasticity method.
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