Microfiber-reinforced porous polymer film and a method for manufacturing the same and composites made thereof
AssigneeW. L. Gore & Associates, Inc.
InventorJoseph E. Korleski
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Abstract
A porous composite sheet is prepared from a mixture of polytetrafluoroethylene particulates and liquid crystal polymer particulates. The liquid crystal polymer in the porous composite sheet can be in the form of particulates contained within a polytetrafluoroethylene microstructure, or formed into a network of liquid crystal polymer fibers contained within and attached to the polytetrafluoroethylene microstructure. The porous composite sheet can be used as a self-reinforced porous sheet, for example, as a filter media. The pores of the composite sheet can be at least partially filled with polymeric resins and the composite sheet laminated to form useful electronic assemblies such as printed circuit boards and the like.
Claims10
A porous composite sheet comprising:
- (a) polytetrafluoroethylene;
- and
- (b) liquid crystal polymer;
- said sheet formed from a mixture of polytetrafluoroethylene particulate and liquid crystal polymer particulate;
- said sheet having a concentration of liquid crystal polymer in the range 2 to 85 volume percent.
Dependencies are inferred from the claim text.