Method for preparing fluororubber

The present ivnention discloses a preparation method of fluororubber. Said prparation method includes the following steps: collecting two gases of hexafluoropropylene and vinylidene fluoride into barostat, controlling the pressure of said barostat to make pressure constant (0.4-0.6 MPa), respectively making hexafluoropropylene and vinylidene fluoride pass through regulation valve and mass flowmeter, then fed into static mixer, after they are uniformly mixed, feeding them into charge buffer tank, controlling its pressure and making said pressure constant (0.2-0.3 MPa), then compressing and feeidng them into polymerization still to implement polymerization reaction so as to obtain the invented product.