US 9,751,973 B2 · Epoxy systems for composites

Abstract

Compositions and methods for forming epoxy resin systems are provided. In one embodiment, a composition is provided for an epoxy resin system including a reaction product of an epoxy resin component and a curing agent component comprising a first amine compound having the formula R1R2R3N, wherein R1 and R2 are independently an aliphatic or alicyclic organic functional group and R3 is an alkyl group, having a backbone of 2-18 carbon atoms, and a second amine compound having one or more primary or secondary amine groups, with the stoichiometic ratio of —NH bonds of the second amine compound to the epoxy groups of the epoxy resin component being from 1:20 to about 21:20. The composition may be used to form composites, such as used in commercial wind turbine blade manufacturing.

Claims24

Dependent claims

A method for preparing an epoxy resin product, comprising:

providing an epoxy resin component to a mixing device;
providing a curing agent component to the mixing device, and the curing agent component comprising:
a first amine compound represented by the formula:
wherein R1 and R2 each comprise an organic functional group having from 1-6 carbon atoms, and R3 comprises an aralkyl group;
and
a second amine compound having one or more primary amine groups, one or more secondary amine groups, or combinations thereof, wherein the stoichiometric ratio of the —NH bonds of the second amine compound to the epoxy groups of the epoxy resin component is from 3:10 to 19:20 and the molar ratio of the second amine compound to the first amine compound is from about 0.01:1 to about 100:1;
and
reacting the epoxy resin component and curing agent.

5 more elements

Dependencies are inferred from the claim text.

Epoxy systems for composites

Life of this patent

Epoxy systems for composites

Life of this patent

Abstract

Claims24