Two-component curable composition and cured product thereof
Provided are a two-component curable composition and a cured product thereof, the two-component curable composition including: a liquid A that contains a compound (A) having one (meth)acrylate group in one molecule thereof, a compound (B) having two or more (meth)acrylate groups in one molecule thereof, a dispersant (D), a reducing agent (G), and a thermally conductive filler (E); and a liquid B that contains a polymerization initiator (C), a dispersant (D), a plasticizer (F), and a thermally conductive filler (E).
1 . A two-component curable composition, comprising:
a liquid A that contains a compound (A) having one (meth)acrylate group in one molecule thereof, a compound (B) having two or more (meth)acrylate groups in one molecule thereof, a dispersant (D 1 ), a reducing agent (G), and a thermally conductive filler (E 1 ); and
a liquid B that contains a polymerization initiator (C), a dispersant (D 2 ), a plasticizer (F), and a thermally conductive filler (E 2 ),
wherein either dispersant (D 1 ) or dispersant (D 2 ) comprises a polyglycerin monoalkyl ether compound or a fatty acid having an unsaturated hydrocarbon group comprising from 18 to 22 carbon atoms,
with the proviso that liquid A excludes the polymerization initiator (C), and
with the proviso that liquid B excludes the compound (A) and the compound (B).
2 . The two-component curable composition according to claim 1 , wherein a content of the dispersant (D 1 ) contained in the liquid A is from 0.1% by mass to 3% by mass with respect to a total mass of the liquid A.
3 . The two-component curable composition according to claim 1 , wherein the thermally conductive filler (E 1 ) contained in the liquid A and the liquid B comprises at least one compound selected from the group consisting of magnesium oxide and zinc oxide.
4 . The two-component curable composition according to claim 1 , wherein the compound (A) comprises a compound represented by the following Formula (1):
wherein, in Formula (1), R 1 represents an alkyl group having from 1 to 50 carbon atoms, and R 2 represents a hydrogen atom or a methyl group.
5 . The two-component curable composition according to claim 1 , wherein the compound (B) comprises a compound represented by the following Formula (2):
wherein, in Formula (2), R B1 represents an alkylene group having from 1 to 5 carbon atoms, each of R B2 and R B3 independently represents a hydrogen atom or a methyl group, and n represents an integer of 4 or more.
6 . The two-component curable composition according to claim 1 , wherein the plasticizer (F) comprises an acrylic polymer having a glass transition temperature of −20° C. or less.
7 . The two-component curable composition according to claim 1 , wherein the plasticizer (F) comprises trimellitate ester.
8 . The two-component curable composition according to claim 1 , wherein a content of the compound (B) is from 0.5 parts by mass to 10 parts by mass with respect to 100 parts by mass of the compound (A).
9 . The two-component curable composition according to claim 1 , wherein a content of the plasticizer (F) is from 3% by mass to 15% by mass with respect to a total mass of the liquid B.
10 . A cured product of the two-component curable composition according to claim 1 .