Composite multilayer material
AssigneeFederal-Mogul Wiesbaden GmbH
InventorAchim Adam
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Abstract
A composite multilayer material is described which exhibits relatively high wear and delamination resistance without impairment of the coefficient of friction in the presence of oil. The composite multilayer material contains at least one powder-form polyaramid in its overlay, the content of PTFE or of PTFE together with the other fluorothermoplastics which form the matrix material amounting to 55-90 vol. %, the content of further fillers amounting to 9.5-44.5 vol. % and the content of polyaramid amounting to 0.5-10 vol. %.
Claims10
A composite multilayer material comprising a metallic backing layer, a porous intermediate layer and an overlay applied thereto, said overlay having a fluorothermoplastic matrix consisting of fluorothermoplastic material having a melting point above 260° C., said fluorothermoplastic matrix material comprising PTFE present in an amount no less than any other fluorothermoplastic constituent of the fluorothermoplastic matrix and fillers incorporated into said fluorothermoplastic matrix, characterized by said overlay having incorporated therein at least one powder-form polyaramid and wherein the content of said fluorothermoplastic matrix material amounts to 55-90 vol. %, the content of said fillers amounts to 9.5-44.5 vol. % and the content of said polyaramid amounts to 0.5-10 vol. %.
Dependencies are inferred from the claim text.