FLUORORUBBER COMPOSITION AND METHOD FOR PRODUCING SAME

摘要

The invention provides a method for producing a fluororubber composition that is able to give a crosslinked article that exhibits not only heat resistance, but also excellent mechanical properties at high temperatures. A method for producing a fluororubber composition includes: a step (1-1) of mixing a fluororubber (A) and a carbon black (B) by means of an internal mixer until the maximum temperature reaches 80 to 220°C so as to obtain an intermediate composition; a step (1-2) of cooling the intermediate composition to a temperature of less than 50°C; and a step (2-1) of mixing the cooled intermediate composition until the maximum temperature reaches not lower than 10°C but lower than 80°C so as to obtain a fluororubber composition.