The invention discloses synergistically-enhanced high-thermal-stability
corrosion-resistant fluoroperoxide rubber and a preparation method thereof, and belongs to the technical field of
energy conservation and
environmental protection. Existing fluoroperoxide rubber is poor in
thermal stability, insufficient in
corrosion resistance and weak in
mechanical property.
Raw rubber is synthesized through an
emulsion polymerization method, and nano aluminum
oxide,
aluminum nitrate and other synergistic modifiers and a two-stage
vulcanization process are adopted for preparation. The preparation method comprises the following specific steps: adding deionized water into a reaction kettle, vacuumizing, adding
ammonium perfluorooctanoate, stirring and heating; introducing a mixed
monomer of
chlorotrifluoroethylene, vinylidene
fluoride and
hexafluoropropylene, increasing the pressure, and injecting
potassium persulfate,
diiodomethane and trifluorobromoethylene for reaction; cooling and terminating to obtain an
emulsion; adding
magnesium chloride and the like, condensing, and vacuum-
drying to obtain
raw rubber; mixing the
raw rubber with a nano filler and the like, heating in a water bath, and adding a cross-linking agent to refine
masterbatch; adding a
silane coupling agent and the like, and performing secondary refining to obtain mixed rubber; and performing two-stage
vulcanization to obtain a final product. The rubber is obviously superior to the prior art, and is suitable for high-temperature
corrosion environment.