▎ 摘　　要

NOVELTY - Cleaning agent, comprises 40-60 pts. wt. 1,1,2,2-tetrafluoro-1-methoxy-2-(trifluoromethoxy)ethane (I), 20-30 pts. wt. 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane (II), and 20-30 pts. wt. 1,1,1,2,3,3-hexafluoro-3-methoxy-2-(trifluoromethyl)propane (III), where the CAS number of (I) is 71589-66-0, the CAS of (II) is 219484-64-7, and the CAS RN number of (III) is 163702-08-7. USE - The cleaning agent is useful for cleaning resin and cleaning flexible graphite bipolar plates (all claimed). ADVANTAGE - The cleaning agent reduces solid waste discharge, reduces energy consumption in the production process, and saves the production cost of the flexible graphite bipolar plate; the method of low-temperature and reduced-pressure distillation ensures high-efficiency separation of cleaning agent and impregnating agent, and the separated and purified cleaning agent are recycled and reused. DETAILED DESCRIPTION - Cleaning agent, comprises 40-60 pts. wt. 1,1,2,2-tetrafluoro-1-methoxy-2-(trifluoromethoxy)ethane of formula (I), 20-30 pts. wt. 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane of formula (II), and 20-30 pts. wt. 1,1,1,2,3,3-hexafluoro-3-methoxy-2-(trifluoromethyl)propane of formula (III), where the CAS number of (I) is 71589-66-0, and its molecular formula is C4H3F7O, the CAS of (II) is 219484-64-7, and its molecular formula is C5H3F9O, and the CAS RN number of (III) is 163702-08-7, and its molecular formula is C5H3F9O. An INDEPENDENT CLAIM is also included for process of cleaning flexible graphite bipolar plates, comprising cleaning the flexible graphene bipolar plates impregnated with resin using the cleaning agent.