The invention relates to the technical field of rubber, in particular to a fluororubber compound, a preparation method and application thereof. The fluororubber compound is prepared from the following raw materials by weight: 100 parts of fluororubber modified
raw rubber, 2-5 parts of modified liquid fluororubber, 1.2-2.8 parts of a
polyol vulcanizing aid, 1-5 parts of a
modified carbon black filler and 1-10 parts of a high-reinforcement white filler. The preparation method of the fluororubber compound comprises the following steps of: (1) mixing the
polyol vulcanizing aid, the high-reinforcement white filler, an acid
acceptor and a
release agent; (2) shearing and mixing the fluororubber modified
raw rubber and the modified liquid fluororubber in an open mixing state, and then carrying out internal mixing; (3) adding the mixed additive obtained in the step (1) and
modified carbon black filler into the mixed
raw rubber, and performing refining; and (4) conducting remilling and
thinning in an open mill in the form of a triangular packet. The fluororubber compound disclosed by the invention has high elasticity and low pressure change performance under the condition of extremely low
hardness, and can be applied to the fields of automobiles,
spaceflight and the like.