Fluoropolymer Hollow Fiber Membrane with Fluoro-copolymer and Fluoro -terpolymer bonded end portion(s)

摘要

A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of Polytetrafluoroethylene (PTFE), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the PTFE hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives. Furthermore, the PTFE hollow fibers can be treated with a fluoropolymeric solvent solution before the chemically resistant film is applied to enhance the adhesion of the PTFE fiber to the film. PTFE hollow fibers, and its respective fluoro-co and terpolymers as potting films impart high packing densities, superb chemical resistance and temperature resistance without membrane contamination, or low fiber pull strength, as is sometimes observed with standard potting materials such as polyurethane and epoxy.

主权项

1. A fluid transport device comprised of the following:
a plurality of perfluorinated polymer fibers having an inner diameter, an outer diameter, two ends with a length between said ends, at least one end of each fiber open for fluid entrance or exit, said fibers arranged parallel one another and bonded over a length region by a segment of polymeric film, said segment of polymeric film contacting outer surface areas of the fibers in the region and filling interstitial volume between the fibers in said region.