| 摘要 |
PURPOSE:To provide the titled porous article which is inexpensive and excellent in chemical properties and sinter strength and has a uniform welding point, a high porosity and a uniform void distribution, by filling a resin powder mixture of a tetra-fluoroethylene resin powder and a specified fluororesin powder into a molding die and sintering it. CONSTITUTION:90-20wt% tetrafluoroethylene resin powder (A) having a particle size of 1600-0.2mu is mixed with 10-80wt% at least one fluororesin powder (B) selected from the group consisting of tetrafluoroethylene copolymer resins (a) obtd. by copolymerizing at least one member selected from the group consisting of perfluoroalkylethylene, perfluorooxyalkylethylene and olefins with a perfluoroalkylethylene or perfluorooxyalkylethylene as a comonomer, vinylidene fluoride resins (b) and vinyl fluoride resins (c). The resulting resin powder mixture is put into a molding die, optionally while vibrating, with a high feed rate and sintered to obtain the titled porous article having a porosity of 25-70%.
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