Thermally conductive polymer molded article and method for producing the same
First Claim
1. A thermally conductive polymer molded article formed by molding a thermally conductive composition, the thermally conductive composition comprising:
- 100 parts by weight a liquid crystalline polymer having a first thermal conductivity; and
5 to 800 parts by weight a thermally conductive filler having a second thermal conductivity in at least one direction, which has magnetic anisotropy,wherein the liquid crystalline polymer and the thermally conductive filler are oriented in the molded article by a magnetic field.
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Abstract
A thermally conductive polymer molded article formed by molding a thermally conductive composition which comprises a liquid crystalline polymer and thermally conductive filler having magnetic anisotropy, wherein the liquid crystalline polymer and the thermally conductive filler are oriented in a predetermined direction by a magnetic field. The thermally conductive composition contains 100 parts by weight of the liquid crystalline polymer and 5 to 800 parts by weight of the thermally conductive filler having magnetic anisotropy. The thermally conductive filler has a thermal conductivity in at least one direction higher than the thermal conductivity of the liquid crystalline polymer.
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Citations
15 Claims
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1. A thermally conductive polymer molded article formed by molding a thermally conductive composition, the thermally conductive composition comprising:
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100 parts by weight a liquid crystalline polymer having a first thermal conductivity; and 5 to 800 parts by weight a thermally conductive filler having a second thermal conductivity in at least one direction, which has magnetic anisotropy, wherein the liquid crystalline polymer and the thermally conductive filler are oriented in the molded article by a magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for producing a thermally conductive polymer molded article formed of a thermally conductive composition, the thermally conductive composition comprising 100 parts by weight a liquid crystalline polymer and 5 to 800 parts by weight a thermally conductive filler having magnetic anisotropy, the method comprising steps of:
- providing the thermally conductive composition into a mold;
allowing the liquid crystalline polymer in the thermally conductive composition in the mold to undergo phase transition to a liquid crystalline state;
placing the thermally conductive composition in the mold in a magnetic field, thereby orienting the liquid crystalline polymer and the thermally conductive filler contained in the thermally conductive composition in a predetermined direction;
allowing the liquid crystalline polymer in a liquid crystalline state to undergo phase transition to a solid state;
solidifying the thermally conductive composition; and
removing the solidified composition from the mold. - View Dependent Claims (12, 13)
- providing the thermally conductive composition into a mold;
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14. An apparatus for producing a thermally conductive polymer molded article formed of a thermally conductive composition, the thermally conductive composition comprising 100 parts by weight a liquid crystalline polymer and 5 to 800 parts by weight a thermally conductive filler having magnetic anisotropy, wherein the liquid crystalline polymer and the thermally conductive filler are oriented in a predetermined direction, the apparatus comprising:
- a mold having a cavity for containing the thermally conductive composition therein to mold the thermally conductive composition into a predetermined shape; and
a magnetic field generating device, located so that magnetic lines of force generated by the magnetic field generating device pass the cavity of the mold. - View Dependent Claims (15)
- a mold having a cavity for containing the thermally conductive composition therein to mold the thermally conductive composition into a predetermined shape; and
Specification