IMPROVED MICROPOROUS WATERPROOF AND MOISTURE VAPOR PERMEABLE STRUCTURES, PROCESSES OF MANUFACTURE AND USEFUL ARTICLES THEREOF

摘要

Production polytetrafluoroethylene (PTFE) semi-interpenetrating polymer network and silicone elastomers describe one kind include the following steps (1) nearly the major amount of un-sintered polytetrafluoroethyldispersion dispersion resin of mixture and unfibrillated particles and a small amount of hydrocarbon (one) and (two) addition curable silicone composition substantially by having the polydiorganosiloxanepolyurea of unsaturation alkenyl, organic hydrogen polysiloxanes crosslinking agent, catalyst promotes the catalysis reaction for being crosslinked the polysiloxanes and inhibitor; (2) the extrudable shape of involvement is formed; (3) the two-way extrusion mixture forms the structure that profile extruded produce product have random fibrinogen by mold; Hydrocarbon liquid (4) evaporation, and the catalyst is activated to include the structure of the extrudate of the fibrinogen with the semi-interpenetrating polymer network for generating cured silicone elastomer and polytetrafluoroethylene (PTFE). Thus the product of method production has improved physical property, is used alone with fibrillated polytetrafluoroethylene dispersion resin is squeezed out.