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US 7,018,701 B2Granted
Thermally conductive sheet and method for manufacturing the same
AssigneeFuji Polymer Industries Co., Ltd.
InventorsShunsuke Yamada, Hajime Funahashi, Junzo Shiomi
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Abstract
A thermally conductive sheet includes a polyolefin elastomer mixed with a thermally conductive filler. The amount of volatile organic gas generated from the sheet is not more than 1000 μg/cm2 per unit surface area. The amount of volatile corrosive gas generated from the sheet is not more than 10 μg/cm2 per unit surface area. The sheet has a thermal conductivity of 0.5 to 20 W/m·K. This thermally conductive sheet generates fewer volatile substances and can be used even in a closed place.
Claims12
A thermally conductive sheet comprising:
- a polyolefin elastomer mixed with a thermally conductive filler,
- wherein the polyolefin elastomer is a polymer obtained in which an allyl group is present at both terminals polyisobutylene, and
- volatile components, including residual solvent and an unreacted residual material, contained in the polyolefin elastomer are removed by distillation or reduced-pressure aspiration during or before producing the thermally conductive sheet, so that
- an amount of volatile organic gas generated from the thermally conductive sheet per unit surface area is not more than 1000 μ/cm2,
- an amount of volatile corrosive gas generated from the thermally conductive sheet per unit surface area is not more than 10 μg/cm2, and
- the thermally conductive sheet has a thermal conductivity of 0.5 to 20 W/m·K.
3 more elements
Dependencies are inferred from the claim text.