Composite material and molded composite material
A composite material obtained by impregnating a fibrous filler to which a hydrocarbon-based resin is attached with a polymerizable composition containing a cycloolefin monomer and a metathesis polymerization catalyst is provided. According to the present invention, it is possible to provide a composite material which has no impregnation unevenness and can give a composite material molded article having excellent strength.
1 . A composite material molded article obtained by curing a composite material,
wherein the composite material is obtained by impregnating a preform of a fibrous filler with a polymerizable composition,
the preform of the fibrous filler comprises the fibrous filler and a hydrocarbon-based resin as a binder, and
the polymerizable composition contains a cycloolefin monomer and a metathesis polymerization catalyst.
2 . The composite material molded article according to claim 1 , wherein the fibrous filler is carbon fiber and/or glass fiber.
3 . The composite material molded article according to claim 1 , wherein the hydrocarbon-based resin is a petroleum resin and/or a hydrogenation product of a petroleum resin.
4 . The composite material molded article according to claim 1 , wherein the hydrocarbon-based resin is an alicyclic petroleum resin and/or a hydrogenation product of an alicyclic petroleum resin.
5 . The composite material molded article according to claim 4 , wherein the alicyclic petroleum resin is a resin obtained by polymerizing a cyclopentadiene-based monomer as a main component.
6 . The composite material molded article according to claim 1 , wherein the cycloolefin monomer is a cycloolefin monomer without polar group.
7 . The composite material molded article according to claim 1 , wherein the cycloolefin monomer contains dicyclopentadienes and cyclic olefins having four or more rings.
8 . The composite material molded article according to claim 1 , wherein the polymerizable composition further contains at least one selected from a group consisting of a radical generator, a diisocyanate compound, and a polyfunctional (meth)acrylate compound.