Granule useful for highly thermal-conductive resin composition

Abstract

Granules useful for highly thermal-conductive resin composition are provided. The Granules have a number average particle diameter of 0.5 to 5 mm, obtained by granulating fibers mainly containing fibers selected from alumina fibers and carbon fibers, wherein the fibers to be granulated have a number average fiber diameter of 1 to 50 μm.

Description

Claims

1. A granule having a number average particle diameter of 0.5 to 5 mm and comprising fibers, wherein the fibers have a number average fiber diameter of 1 to 50 μm and are selected from a group consisting of carbon fibers and alumina fibers mainly containing alumina.

2. The granule according to claim 1, wherein the fibers to be granulated have a bulk density of 0.2 to 1 g/cm3.

3. The granule according to claim 1 or 2, wherein the granule is a granule obtained by granulating the fibers while stirring.

4. An agent comprising the granule according to claim 1 or 2.

5. A resin composition comprising the granule according to claim 1 and a resin selected from a thermosetting resin and a thermoplastic resin.

6. The resin composition according to claim 5, which comprises 10 to 300 parts by volume of the granule on the basis of 100 parts by volume of the thermosetting resin.

7. The resin composition according to claim 5, which comprises 10 to 100 parts by volume of the granule on the basis of 100 parts by volume of the thermoplastic resin.

8. The resin composition according to claim 5, wherein the resin is a thermoplastic resin.

9. The resin composition according to claim 8, wherein the thermoplastic resin is polyphenylene sulfide.

10. The resin composition according to claim 8, wherein the thermoplastic resin is a liquid crystal polyester.

11. The resin composition according to claim 10, wherein the liquid crystal polyester has a flow-beginning temperature of not less than 280° C.

12. The resin composition according to claim 10, wherein the liquid crystal polyester comprises: 30 to 80% by mol of repeating structural unit derived from p-hydroxybenzoic acid and/or 2-hydroxy-6-naphthoic acid;10 to 35% by mol of repeating structural unit derived from hydroquinone and/or 4,4′-dihydroxybiphenyl; and10 to 35% by mol of repeating structural unit derived from at least one compound selected from the group consisting of terephthalic acid, isophthalic acid and 2,6-naphthalenedicarboxylic acid;on the basis of 100% by mol of the total amounts of the repeating structural units that constructing the liquid crystal polyester.

13. A molded article obtainable by molding the resin composition according to any of claims 5, 9 and 10.