| abstract |
To provide a method for producing crosslinked rubber excellent in tensile strength and transparency.The method for producing crosslinked rubber of the present invention is a method for producing crosslinked rubber, which comprises crosslinking a fluorinated copolymer in a composition containing the fluorinated copolymer, a crosslinking agent, a crosslinking co-agent and an acid acceptor, wherein the fluorinated copolymer is a copolymer having units based on tetrafluoroethylene and units based on propylene, in the composition, the content of the crosslinking agent is from 0.03 to 1.5 parts by mass to 100 parts by mass of the fluorinated copolymer, the content of the crosslinking co-agent is from 0.1 to 3.5 parts by mass to 100 parts by mass of the fluorinated copolymer, and the total light transmittance of the crosslinked rubber is from 60 to 100%. |