Anisotropic thermal conductive resin fiber, anisotropic thermal conductive resin member, and manufacturing method of these

1. An anisotropic thermal conductive resin fiber, comprising:

a stretch fiber consisting of a thermoplastic resin selected from the group consisting of an acrylic polymer, a methacrylic polymer, polyamide, polyethylene terephthalate, polyarylate, polysulfone, and polyether ether ketone, wherein the stretch fiber has a diameter of 200 μm or less; and

a thermal insulation material covering the stretch fiber.

2. The anisotropic thermal conductive resin fiber according to claim 1 , wherein the thermal insulation material has a thermal conductivity of 0.1 W/(m·K) or less.

3. The anisotropic thermal conductive resin fiber according to claim 1 , wherein the thermal insulation material comprises aerogel or nano bubbles.

4. An anisotropic thermal conductive resin member, comprising:

a plurality of resin fibers which are bundled,

wherein the resin fibers include a stretch fiber consisting of a thermoplastic resin selected from the group consisting of an acrylic polymer, a methacrylic polymer, polyamide, polyethylene terephthalate, polyarylate, polysulfone, and polyether ether ketone, and a thermal insulation material covering the stretch fiber, and

the stretch fiber has a diameter of 200 μm or less.

5. The resin member according to claim 4 , comprising

a first region and a second region including the plurality of resin fibers,

wherein the plurality of resin fibers in the first region and the plurality of resin fibers in the second region extend in directions that are different from each other.

6. The resin member according to claim 5 ,

wherein the plurality of resin fibers in the first region and the plurality of resin fibers in the second region extend in directions that are substantially orthogonal to each other.

7. The resin member according to claim 4 , comprising:

a first region, a second region and a third region including the plurality of resin fibers,

wherein the plurality of resin fibers in the first region, the plurality of resin fibers in the second region, and the plurality of resin fibers in the third region extend in directions that are different from each other.

8. The resin member according to claim 7 ,

wherein the plurality of resin fibers in the first region, the plurality of resin fibers in the second region, and the plurality of resin fibers in the third region extend in directions that are substantially orthogonal to each other.

9. The anisotropic thermal conductive resin member according to claim 4 , wherein the thermal insulation material has a thermal conductivity of 0.1 W/(m·K) or less.

10. The anisotropic thermal conductive resin member according to claim 4 , wherein the thermal insulation material comprises aerogel or nano bubbles.

11. A method of manufacturing an anisotropic thermal conductive resin fiber, comprising:

a step of producing a stretch fiber by stretching a thermoplastic resin, wherein the stretch fiber is consisting of the thermoplastic resin selected from the group consisting of an acrylic polymer, a methacrylic polymer, polyamide, polyethylene terephthalate, polyarylate, polysulfone, and polyether ether ketone, wherein the stretch fiber has a diameter of 200 μm or less; and

a step of covering the stretch fiber with a thermal insulation material.

12. A method of manufacturing an anisotropic thermal conductive resin member, comprising:

a step of producing stretch fibers by stretching a thermoplastic resin, wherein the stretch fibers are consisting of the thermoplastic resin selected from the group consisting of an acrylic polymer, a methacrylic polymer, polyamide, polyethylene terephthalate, polyarylate, polysulfone, and polyether ether ketone, wherein the stretch fiber has a diameter of 200 μm or less;

a step of producing resin fibers by covering the stretch fibers with a thermal insulation material; and

a step of bundling the plurality of resin fibers.