Epoxy/reinforcing polymer composite material and its method of preparation
AssigneesUniversite Claude Bernard Lyon 1, Universite Jean Monnet Saint Etienne, Centre National De La Recherche Scientifique, Institut National Des Sciences Appliquees De Lyon
InventorSébastien Livi
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Abstract
The present invention relates to the technical field of composite materials comprising a thermosetting polymer matrix in which thermoplastic polymer and/or elastomer particles are dispersed. More precisely, the invention relates to a novel type of polymeric material obtained by using a particular ionic liquid as cross-linking agent for an epoxy resin mixed with a thermoplastic polymer and/or an elastomer. The invention also relates to a process for manufacturing said composite material and uses thereof, notably in the aeronautical, aerospace, automotive, maritime, wind power, electronics, or sports and leisure sectors.
Claims14
A composite material comprising an epoxy matrix and a reinforcing polymer dispersed therein;
- wherein the reinforcing polymer is selected from the group consisting of thermoplastic polymer particles, elastomer particles, core-shell particles, and combinations thereof;
- and
- wherein the epoxy matrix is an epoxy resin cross-linked by an ionic liquid cross-linking agent which consists of at least one dialkylphosphate salt of an organic cation or a mixture of said at least one dialkylphosphate salt of an organic cation and a dialkylphosphinate salt of an organic cation, wherein the alkyl groups of the salts are linear or branched and independently contain from 1 to 12 carbon atoms.
A process for manufacturing a composite material comprising the following steps:
- a) mixing (i) a reinforcing polymer selected from the group consisting of thermoplastic polymer particles, elastomer particles, core-shell particles, and combinations thereof, (ii) an epoxy resin and (iii) an ionic liquid cross-linking agent which consists of at least one dialkylphosphate salt of an organic cation or a mixture of said at least one dialkylphosphate salt of an organic cation and a dialkylphosphinate salt of an organic cation, wherein the alkyl groups of the salts are linear or branched and independently contain from 1 to 12 carbon atoms;
- and
- (b) shaping and curing the mixture thus obtained.
Dependencies are inferred from the claim text.