METHOD OF MANUFACTURING A FRICTION MATERIAL AND ESPECIALLY A CLUTCH FRICTION RING
The invention relates to a method of manufacturing a friction material, more particularly a friction ring for a clutch friction disc, which includes an operation of impregnating a wire comprising mineral fibres by means of an aqueous impregnation cement containing at least one surfactant-type compou...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | The invention relates to a method of manufacturing a friction material, more particularly a friction ring for a clutch friction disc, which includes an operation of impregnating a wire comprising mineral fibres by means of an aqueous impregnation cement containing at least one surfactant-type compound and fillers, characterized in that the surfactant-type compound is a polyvinyl alcohol. Friction ring preferably obtained by said method.
L'invention concerne un procédé de fabrication d'un matériau de friction, plus particulièrement d'une couronne de friction pour disque de friction d'embrayage, comportant une opération d'imprégnation d'un fil comprenant des fibres minérales, au moyen d'un ciment d'imprégnation aqueux contenant au moins un composé de type surfactant et des charges, caractérisé en ce que le composé de type surfactant es t un polyvinylalcool. Couronne de friction de préférence obtenue par ledit procédé. |
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