Method of preparing a powdered fluoropolymer blend

摘要

A method for the preparation of a modified fluoropolymer powdered material comprises suspending solid fluoropolymer particles together with PTFE particles in an aqueous carrier, which is frozen and the frozen carrier is then removed by sublimation at sub-atmospheric pressure to produce a dry powder of modified fluoropolymer particles. The fluoropolymer is preferably perfluoromethyl vinyl ether (MFA).