METHOD FOR PRODUCING CROSSLINKED FLUORORESIN POWDER

PROBLEM TO BE SOLVED: To provide a method for producing a crosslinked fluororesin powder capable of obtaining a crosslinked fluororesin powder having a fine particle diameter (for example, an average particle diameter of 20 μm or less).SOLUTION: There is provided a method for producing a crosslinked fluororesin powder which comprises a step of mixing a fluororesin powder 1 as a first powder and a second powder 2 which is not fused to the fluororesin powder 1 even under crosslinking treatment conditions of the fluororesin powder 1 to produce a mixed powder 3, followed by subjecting to crosslinking treatment, wherein the fluororesin powder 1 is obtained by subjecting the mixed powder 3 to embrittlement treatment, followed by subjecting to pulverization treatment.SELECTED DRAWING: Figure 1 【課題】微小な粒径（例えば平均粒径２０μｍ以下）の架橋フッ素樹脂粉体を得ることが可能な架橋フッ素樹脂粉体の製造方法を提供する。【解決手段】本発明の架橋フッ素樹脂粉体の製造方法は、第１の粉体としてのフッ素樹脂粉体１と、フッ素樹脂粉体１の架橋処理条件下においてもフッ素樹脂粉体１に融着しない第２の粉体２とを混合して混合粉体３とした後、混合粉体３に対し架橋処理を行なう工程を備え、フッ素樹脂粉体１は、脆化処理を施した後、粉砕処理を行なって得られたものである。【選択図】図１