Curable composition
The present application may provide a curable composition comprising a filler composition, an acryl monomeric component and an acryl polymeric component, wherein one or more of the acryl monomeric component and polymerization units of the acryl polymeric component comprises a cyclic ether-based acryl compound. Such curable composition is capable of ensuring excellent storage stability regardless of environmental changes by having excellent resistance to moisture and humidity; exhibits room temperature curability and quick curability in a high humidity environment even if an excessive amount of a filler composition is included; exhibits appropriate viscosity, thixotropy, adhesion and/or thermal conductivity before and after curing; and is capable of forming a cured product which is not brittle and flexible by adjusting hardness.
1 . A curable composition comprising a filler composition, an acrylic monomeric component and an acrylic polymeric component;
wherein one or more selected from the acrylic monomeric component or polymerization units of the acrylic polymeric component comprise a cyclic ether-based acrylic compound, and the cyclic ether-based acrylic compound comprises a compound represented by Formula 2:
wherein,
R 3 is hydrogen or an alkyl group having 1 to 20 carbon atoms,
L 1 and L 2 are each independently a single bond or an alkylene group, and
L 3 is an alkylene group, and
the curable composition forms a cured product having a thermal conductivity of 1.2 W/mK or more.
2 . The curable composition according to claim 1 , wherein the acrylic polymeric component is included in a range of 2.5 wt % to 5.5 wt % relative to the total weight of the curable composition.
3 . The curable composition according to claim 1 , wherein the filler composition is included in a range of 1,000 parts by weight to 6,000 parts by weight relative to 100 parts by weight of the acrylic polymeric component.
4 . The curable composition according to claim 1 , wherein the acrylic monomeric component is included in a range of 70 parts by weight to 380 parts by weight relative to 100 parts by weight of the acrylic polymeric component.
5 . The curable composition according to claim 1 , wherein the polymerization units of the acrylic polymeric component comprise the cyclic ether-based acrylic compound in an amount of 70 wt % or more relative to the total weight of the curable composition.
6 . The curable composition according to claim 1 , wherein the polymerization units of the acrylic polymeric component comprise the cyclic ether-based acrylic compound and a hydroxy group-containing acrylic compound.
7 . The curable composition according to claim 6 , wherein the polymerization units of the acrylic polymeric component comprise the hydroxy group-containing acrylic compound in a range of 0.1 to 10 parts by weight relative to 100 parts by weight of the cyclic ether-based acrylic compound.
8 . The curable composition according to claim 6 , wherein the hydroxy group-containing acrylic compound comprises a compound represented by Formula 3:
wherein,
R 4 is hydrogen or an alkyl group having 1 to 20 carbon atoms,
L 4 is one selected from the group consisting of an alkylene group having 1 to 20 carbon atoms, an alkenylene group having 2 to 20 carbon atoms, an alkynylene group having 2 to 20 carbon atoms, an arylene group having 6 to 30 carbon atoms and a heteroarylene group having 5 to 30 ring atoms.
9 . The curable composition according to claim 1 , wherein the polymerization units of the acrylic polymeric component comprise the cyclic ether-based acrylic compound and acrylamide.
10 . The curable composition according to claim 9 , wherein the polymerization units of the acrylic polymeric component comprise the acrylamide in a range of 1 to 30 parts by weight relative to 100 parts by weight of the cyclic ether-based acrylic compound.
11 . The curable composition according to claim 1 , wherein the acrylic polymeric component has a weight average molecular weight in a range of 1,000 to 14,500 g/mol.
12 . The curable composition according to claim 1 , wherein the acrylic monomeric component comprises the cyclic ether-based acrylic compound in an amount of 60 wt % or more relative to the total weight of the acrylic monomeric component.
13 . The curable composition according to claim 1 , wherein the acrylic monomeric component comprises the cyclic ether-based acrylic compound and a hydroxy group-containing acrylic compound.
14 . The curable composition according to claim 13 , wherein the acrylic monomeric component comprises the hydroxy group-containing acrylic compound in a range of 1 to 18 parts by weight relative to 100 parts by weight of the cyclic ether-based acrylic compound.
15 . The curable composition according to claim 13 , wherein the hydroxy group-containing acrylic compound comprises a compound represented by Formula 3:
wherein,
R 4 is hydrogen or an alkyl group having 1 to 20 carbon atoms, and
L 4 is one selected from the group consisting of an alkylene group having 1 to 20 carbon atoms, an alkenylene group having 2 to 20 carbon atoms, an alkynylene group having 2 to 20 carbon atoms, an arylene group having 6 to 30 carbon atoms and a heteroarylene group having 5 to 30 ring atoms.
16 . The curable composition according to claim 1 , wherein the acrylic monomeric component comprises the cyclic ether-based acrylic compound and acrylamide.
17 . The curable composition according to claim 16 , wherein the acrylic monomeric component comprises the acrylamide in a range of 1 to 5 parts by weight relative to 100 parts by weight of the cyclic ether-based acrylic compound.
18 . The curable composition according to claim 1 , further comprising a peroxide compound and a metal catalyst.
19 . The curable composition according to claim 18 , wherein the peroxide compound is included in a range of 1 to 10 parts by weight relative to 100 parts by weight of the acrylic polymeric component, and the metal catalyst is included in a range of 0.01 to 1 part by weight relative to 100 parts by weight of the acrylic polymeric component.