Patent ID: 7914882
Filing Date: 2011-03-29
Classification: C09K,F16J,Y10T

Abstract:
1. High-performance flat sealing material wherein: said material is thermally stable under application conditions up to 330° C.; said material is a fiber-reinforced and/or binder reinforced composite film having a total layer thickness of from 0.01 mm to 3 mm producible by pressing at least one fiber webs wherein each fibre web of said fiber webs has a weight per unit area of from 8 to 400 g/m wherein said material comprises: (a) a thermoplastic, selected from the group consisting of polyether ether ketone (PEEK), poly-p-phenylene sulphide (PPS), polyetherimide (PEI), polyetheramide (PEA), polyamide (PA), polysulphone (PSU), polyvinyl ether sulphone (PPSU), polyether sulphone (PES), polyaryl ether ketone (PAEK), polyether ketone (PEK), polyoxymethylene (POM) and mixtures thereof; or from the group consisting of metallic molten fibres having a melting or softening point of the metal fibres of less than 450° C., as molten fibres, in a proportion by weight of from 30 to 97%, based on the total formulation of the fibre web, and having a average fibre length distribution of the molten fibres in the range of from 0.1 mm to 30 mm, (b) at least one second reinforcing fibre, selected from the group consisting of glass fibres, aramid fibres, carbon fibres, ceramic fibres, oxidised polyphenylene sulphide (PPSO (c) up to 60 percent by weight of a binder based on the total formulation of the fibre web, the components (a), (b) and (c) summing in each case to 100% by weight, and (d) in addition to 100% by weight of the components (a), (b) and (c), optionally from 0.1 to 80 parts by weight of customary additives and compounding materials, selected from fibres, fibrils, fibrids, nanoscale additives in the size range from 5 to 300 nm, film-like structures, pulps, metallic or ceramic powders, or inorganic hollow microspheres having an average particle size of from 10 to 300 μm and a compressive strength of from 3.5 to 70 MPa and mixtures thereof, fibrid-like additives being preferred, under a pressure of from 0.05 to 15 N/mm