申请人:Compagnie Générale des Etablissements Michelin
公开号:EP3289011A1
公开(公告)日:2018-03-07
US4464258A
申请人:——
公开号:US4464258A
公开(公告)日:1984-08-07
[EN] A HEAT-EXPANDABLE RUBBER COMPOSITION<br/>[FR] COMPOSITION DE CAOUTCHOUC THERMO-EXPANSIBLE
申请人:MICHELIN & CIE
公开号:WO2016175338A1
公开(公告)日:2016-11-03
A rubber composition usable that is heat-expandable in the unvulcanized state and expanded in the vulcanized state; in the unvulcanized state, said composition comprises a diene elastomer such as natural rubber and/or a polybutadiene, more than 50 phr of a reinforcing filler such as silica and/or carbon black, between 3 and 30 phr of a carbonate and/or a hydrogen carbonate, wherein the carbonate or the hydrogen carbonate comprises sodium or potassium, and between 3 and 60 phr of a hetero-cycloaliphatic acid ammonium salt, wherein a total content of the carbonate or the hydrogen carbonate and the hetero-cycloaliphatic acid salt is greater than 10 phr. The combined use of the carbonate and/or the hydrogen carbonate and the hetero-cycloaliphatic acid ammonium salt makes it possible to greatly shorten curing time of the rubber composition.