Thermally conductive resin composition and thermally conductive sheet using the same
A thermally conductive resin composition capable of maintaining high thermal conductivity and a thermally conductive sheet using the same, a thermally conductive resin composition contains an addition reaction type silicone resin, a thermally conductive filler, an alkoxysilane compound, and a carbodiimide compound in which a subcomponent is in an inactive state with respect to an alkoxysilane compound, and contains 55 to 85% by volume of the thermally conductive filler. A thermally conductive resin composition contains an addition reaction type silicone resin, an alkoxysilane compound, a thermally conductive filler, and a carbodiimide compound in which a subcomponent is in an inactive state with respect to the alkoxysilane compound, and exhibits thermal conductivity of 5 W/m*K or more after curing.
1. A thermally conductive resin composition comprising:
an addition reaction type silicone resin;
a thermally conductive filler;
an alkoxysilane compound; and
a carbodiimide compound,
wherein the thermally conductive resin composition contains 55 to 85% by volume of the thermally conductive filler and
the carbodiimide compound is at least one selected from the group consisting of a cyclic carbodiimide compound and a xylylene polycarbodiimide.
2. The thermally conductive resin composition according to claim 1 , wherein the thermally conductive filler contains a nitrogen compound having a thermal conductivity of 60 W/m*K or more.
3. The thermally conductive resin composition according to claim 1 , wherein the thermally conductive filler comprises aluminum nitride.
4. The thermally conductive resin composition according to claim 1 , wherein the alkoxysilane compound is an alkylalkoxysilane compound.
5. The thermally conductive resin composition according to claim 1 , wherein the thermally conductive filler is a mixture of aluminum nitride, alumina and magnesium oxide.
6. A thermally conductive sheet comprising a cured product of the thermally conductive resin composition according to claim 1 .
7. The thermally conductive sheet according to claim 6 , wherein the maintenance rate of the thermal conductivity represented by Formula 3 below when aged at 200° C. for 24 hours is 70% or more:
(thermal conductivity of thermally conductive sheet after aging treatment/thermal conductivity of thermally conductive sheet before aging treatment)×100. Formula 3:
8. A heat dissipating structure in which a cured product of the thermally conductive resin composition according to claim 1 is sandwiched between a heat-generating element and a heat dissipating member.
9. A heat dissipating structure in which a thermally conductive sheet according to claim 6 is sandwiched between a heat-generating element and a heat dissipating member.
10. An article comprising a heat dissipating structure according to claim 8 .
11. The thermally conductive resin composition according to claim 2 , wherein the thermally conductive filler comprises aluminum nitride.
12. The thermally conductive resin composition according to claim 2 , wherein the alkoxysilane compound is an alkylalkoxysilane compound.
13. A thermally conductive resin composition comprising:
an addition reaction type silicone resin;
a thermally conductive filler;
an alkoxysilane compound; and
a carbodiimide compound,
wherein the thermally conductive resin composition contains 55 to 85% by volume of the thermally conductive filler,
the thermally conductive filler comprises at least one of aluminum nitride, metal hydroxide, metal oxide, and carbon fiber, and
the carbodiimide compound is at least one selected from the group consisting of a cyclic carbodiimide compound and a xylylene polycarbodiimide.
14. A thermally conductive resin composition containing:
an addition reaction type silicone resin;
a thermally conductive filler;
an alkoxysilane compound; and
a carbodiimide compound,
wherein the thermally conductive resin composition exhibits a thermal conductivity of 5 W/m*K or more after curing, and
the carbodiimide compound is at least one selected from the group consisting of a cyclic carbodiimide compound and a xylylene polycarbodiimide.