Epoxy resin composition, fiber reinforced material, molded article, and pressure vessel
AssigneeToray Industries, Inc.
InventorsAyumi Mori, Noriyuki Hirano, Masayuki Miyoshi
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Abstract
An epoxy resin composition comprises components [A] to [C]. The component [C] is a component [c1] or [c2] and the rubbery state elastic modulus of a cured article produced by curing the epoxy resin composition in a dynamic viscoelasticity evaluation is 10 MPa or less. Component[A] is a phenyl glycidyl ether substituted by a tert-butyl group, a sec-butyl group, an isopropyl group or a phenyl group. Component [B] is a bifunctional or higher aromatic epoxy resin. Component [C] is a curing agent selected from component [c1], which is an acid anhydride-type curing agent and component [c2], which is an aliphatic amine-type curing agent.
Claims35
An epoxy resin composition comprising the following constituent elements [A] to [C], wherein the constituent element [C] is the following constituent element [c1] or [c2], and a cured product of the epoxy resin composition has a rubbery state elastic modulus in a dynamic viscoelasticity evaluation of 10 MPa or less:
- [A] a phenyl glycidyl ether substituted with a tert-butyl group, a sec-butyl group, an isopropyl group, or a phenyl group;
- [B] a bifunctional or higher functional aromatic epoxy resin;
- and
- [C] a hardener:
- [c1] an acid anhydride hardener;
- or
- [c2] an aliphatic amine hardener.
A pressure vessel comprising a liner and a fiber reinforced material layer covering the liner, wherein the fiber reinforced material layer is made from a fiber reinforced material containing a cured product of a thermosetting resin composition and a reinforcing fiber, the fiber reinforced material has a glass transition temperature of 95° C. or higher, and the pressure vessel has a strain translation rate of 85% or more.
Dependencies are inferred from the claim text.