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OwnerNebojsa JELIC, Rainer KOENIGER +4inventors
InventorsNebojsa JELIC, Rainer KOENIGER, Lucca LOTTI, Timothy MORLEY, Zeljko SIKMAN, Alkaterini TSOUTSOURA
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The present invention provides curable moldable compositions comprising from 10 to 80 volume % of heat resistant fiber compositions, a two component resin mixture of (i) one or more epoxy resins, and (ii) a hardener comprising a combination of triethylenetetraamine (TETA) and from 3 to 15 wt. %, based on the weight of the TETA, of 2-phenylimidazole (2-PI). The compositions cure to provide composite articles having a short demold time of 90 s or less at 130° C. and 101 kPa and a high DSC glass transition temperature (Tg) of from 130 to 180° C. when cured at 130° C. for 90 seconds at a pressure of 101 kPa. The invention enables lightweight, heat resistant composite articles, such as for use in automotive applications.
A curable moldable composition comprising from 10 to 80 volume % of heat resistant fiber compositions, a two component resin mixture of (i) one or more epoxy resins, and (ii) a hardener comprising a combination of triethylenetetraamine (TETA) and from 3 to 15 wt. %, based on the weight of the TETA, of 2-phenylimidazole (2-PI), wherein the two component resin mixture has upon mixing a viscosity of from 10 to 100 mPa·s at 130° C.
A composite article comprising a matrix of a cured two component resin mixture of (i) one or more epoxy resins, and (ii) a hardener comprising a combination of triethylenetetraamine (TETA) and from 3 to 15 wt. %, based on the weight of the TETA, of 2-phenylimidazole (2-PI), and, within the matrix, from 10 to 80 volume % of the total composite article, of a heat resistant fiber composition.
A method of making a fiber reinforced resin matrix composite article comprising:
Dependencies are inferred from the claim text.