NASA NTRS · 20080006889
Heat resistant substrates and battery separators made therefrom
Abstract
A flexible substrate having a caustic resistant support and at least one membrane comprising a solid polymeric matrix containing a network of interconnected pores and interdispersed inorganic filler particles with a ratio of filler: polymer in the polymeric matrix of between about 1:1 to 5:1, is made by coating at least one side of the support with a filler:coating formulation mixture of inorganic filler particles and a caustic resistant, water insoluble polymer dissolved in an organic solvent, and removing the solvent from the mixture to provide a porous network within the polymeric matrix.
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Langer, Alois, Scala, Luciano C., Ruffing, Charles R.. 1976-04-27. Heat resistant substrates and battery separators made therefrom. https://ntrs.nasa.gov/citations/20080006889
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