RADICAL POLYMERIZABLE RESIN COMPOSITION AND STRUCTURE REPAIRING MATERIAL
Provided are a radical-polymerizable resin composition and a structure repairing material which, when used for repairing concrete structures, enable construction working even in a low-temperature environment, achieve a high strength and a low shrinkage by curing, and prevent cracking. The radical-polymerizable resin composition contains a radical-polymerizable resin (A) containing at least one selected from the group consisting of a vinyl ester resin, an urethane (meth)acrylate resin, and a polyester (meth)acrylate resin, a radical-polymerizable monomer (B) containing an isobornyl group-having unsaturated compound (B1), and a hydroxy group-containing aromatic tertiary amine (C) represented by the general formula (I), and containing the radical-polymerizable resin (A) and the radical-polymerizable monomer (B) in a total amount of 75% by mass or more. The structure repairing material contains the radical-polymerizable resin composition, an organic peroxide, and a filler (Z).
1 . A radical-polymerizable resin composition comprising:
a radical-polymerizable resin (A) containing at least one selected from the group consisting of a vinyl ester resin, a urethane (meth)acrylate resin, and a polyester (meth)acrylate resin,
a radical-polymerizable monomer (B) containing an isobornyl group-having unsaturated compound (B1), and
a hydroxy group-containing aromatic tertiary amine (C) represented by the following general formula (I),
and containing the radical-polymerizable resin (A) and the radical-polymerizable monomer (B) in a total amount of 75% by mass or more:
wherein R 1 represents H, CH 3 or OCH 3 , R 2 represents a hydroxyalkyl group having 1 to 10 carbon atoms, and R 3 represents an alkyl group having 1 to 10 carbon atoms, or a hydroxyalkyl group having 1 to 10 carbon atoms.
2 . The radical-polymerizable resin composition according to claim 1 , wherein the isobornyl group-having unsaturated compound (B1) contains an ethylenically-unsaturated bond.
3 . The radical-polymerizable resin composition according to claim 2 , wherein the isobornyl group-having unsaturated compound (B1) is an isobornyl (meth)acrylate.
4 . The radical-polymerizable resin composition according to claim 1 , wherein the content ratio of the isobornyl group-having unsaturated compound (B1) relative to the total amount of the radical-polymerizable resin (A) and the radical-polymerizable monomer (B) is 10% by mass or more and 65% by mass or less.
5 . The radical-polymerizable resin composition according to claim 1 , wherein the content ratio of the isobornyl group-having unsaturated compound (B1) in the radical-polymerizable monomer (B) is 30% by mass or more and 90% by mass or less.
6 . The radical-polymerizable resin composition according to claim 1 , wherein the other radical-polymerizable monomer (B2) than the isobornyl group-having unsaturated compound (B1) in the radical-polymerizable monomer (B) contains at least one selected from the group consisting of a mono(meth)acrylate, a di(meth)acrylate and a tri(meth)acrylate.
7 . The radical-polymerizable resin composition according to claim 1 , wherein the other radical-polymerizable monomer (B2) than the isobornyl group-having unsaturated compound (B1) in the radical-polymerizable monomer (B) contains at least one selected from the group consisting of dicyclopentenyloxyethyl (meth)acrylate, (meth)acryloylmorpholine, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, and trimethylolpropane tri(meth)acrylate.
8 . The radical-polymerizable resin composition according to claim 1 , wherein, in the general formula (I), R 3 is a hydroxyalkyl group having 1 to 10 carbon atoms.
9 . The radical-polymerizable resin composition according to claim 1 , wherein the content ratio of the hydroxy group-containing aromatic tertiary amine (C) is 0.1 to 10% by mass.
10 . The radical-polymerizable resin composition according to claim 1 , wherein the radical-polymerizable resin (A) contains a vinyl ester resin.
11 . The radical-polymerizable resin composition according to claim 1 , further containing, as an additive component, at least one selected from a wax, any other amine than the hydroxy group-containing aromatic tertiary amine (C), a solvent, a polymerization inhibitor, a coupling agent, a curing accelerator, and an antioxidant.
12 . A structure repairing material comprising a radical-polymerizable resin composition (X) of claim 1 , an organic peroxide (Y) and a filler (Z).
13 . The structure repairing material according to claim 12 , wherein the filler (Z) contains at least one selected from the group consisting of an inorganic thixotropic agent, an organic compound fiber, calcium carbonate, cement, silica sand, and silica stone.
14 . The structure repairing material according to claim 12 or 13 , wherein the content of the filler (Z) relative to 100 parts by mass of the radical-polymerizable resin composition (X) is 100 to 700 parts by mass.
15 . The structure repairing material according to claim 12 , wherein the content of the organic peroxide (Y) relative to 100 parts by mass of the radical-polymerizable resin composition (X) is 0.1 parts by mass or more and 10 parts by mass or less.