摘要:
An epoxy resin composition comprising the following constituents [A], [B], and [C]:[A] an epoxy resin having a structure represented by a formula (1); in which a ring Z represents a condensed polycyclic aromatic hydrocarbon ring, R1 and R2 represent a substituent, R3 represents a hydrogen atom or a methyl group, k is an integer of 0 to 4, m is an integer of 0 or more, and n is an integer of 1 or more; [B] at least one resin selected from the group consisting of the following [Bx], [By] and [Bz]; [Bx] a bisphenol type epoxy resin; [By] an amine type epoxy resin; and [Bz] a thermoplastic resin; [C] a polyamine curing agent. Provided is an epoxy resin composition which provides a cured product having excellent heat resistance, toughness and elastic modulus.
摘要:
Provided are: a fiber-reinforced composite material which is suppressed in morphology variation due to the molding conditions, while having excellent mode I interlaminar fracture toughness and excellent wet heat resistance; an epoxy resin composition for obtaining the fiber-reinforced composite material; and a prepreg which is obtained using the epoxy resin composition. An epoxy resin composition for fiber-reinforced composite materials, which contains at least the following constituent elements [A]-[F], and which is characterized by containing 5-25 parts by mass of constituent element [C] and 2-15 parts by mass of constituent element [E] per 100 parts by mass of the total epoxy resin blended therein. [A] A bifunctional amine type epoxy resin. [B] A tetrafunctional amine type epoxy resin. [C] A bisphenol F type epoxy resin having an epoxy equivalent weight of 450-4,500. [D] An aromatic amine curing agent. [E] A block copolymer having a reactive group that can be reacted with as epoxy resin. [F] Thermoplastic resin particles that are insoluble in an epoxy resin.
摘要:
An epoxy resin composition produces a cured product having improved elastic modulus and improved nominal strain at compressive fracture. The epoxy resin composition is a fiber-reinforced composite material having excellent compression strength and interlayer toughness. The epoxy resin composition contains at least the following constituent components [A], [B] and [C]. [A] A specific ortho type epoxy resin. [B] At least one component selected from the group consisting of: thermoplastic resins that are compatible with the epoxy resin [A]; and core-shell type polymers. [C] An amine curing agent.
摘要:
An epoxy resin composition comprising an epoxy resin [A], an amine-based curing agent [B] and a block copolymer [C] as components, wherein the epoxy resin [A] contains [Aa] an epoxy resin having at least one structure selected from a condensed polycyclic structure, biphenyl structure and oxazolidone ring structure; [Ab] an epoxy resin selected from a polyfunctional amine type epoxy resin [Ab1] and a liquid bisphenol type epoxy resin [Ab2], and the block copolymer [C] is at least one block copolymer selected from the group consisting of S-B-M, B-M and M-B-M. The present invention provides an epoxy resin composition that can be cured to form a cured product excellent in heat resistance, elastic modulus and toughness.