Patent ID: 7811362
Filing Date: 2010-10-12
Classification: B01D,C10G,G01N,Y10T

Abstract:
1. An oil-gas separation membrane for separating dissolved fault gases from gas-containing dielectric fluid of an electric system, wherein said oil separation membrane comprises a gas permeable bulk polymer membrane, a porous sintered metal frit, and a gas permeable adhesive bonding said gas permeable bulk polymer and said porous sintered metal frit together, wherein said bulk gas permeable polymer membrane is made of material selected from a group consisting of poly(tetrafluoroethylene) (PTFE), poly(tetrafluoroethylene-c-o-hexafluoropropylene), poly(vinylidene fluoride), and poly(tetrafluoroethylene-co-perfluoro alkoxy vinyl ether), and has a thickness between 0.01-0.50 mm, preferably between 0.02-0.05 mm, wherein said gas permeable adhesive is an amorphous polymer which is a copolymer of (tetrafluoroethylene)/(2,2-bis-perflu-oromethyl-4,5-difluoro-1,3-dioxole), said organic solvent is perfluorinated solvents, and said fine polymer particulate is selected from poly(tetrafluoroethylene) and poly(tetrafluoroethylene-co-hexafluoro-propylene) with 0.05-5 μm in particle size.