| 摘要 |
PROBLEM TO BE SOLVED: To discover a heat conductive adhesive for a metallic heat transfer tube excellent in blocking resistance and curability at manufacturing, adhesive property and thermal conductivity, and to provide a metallic heat transfer tube for a heat exchanger excellent in these properties.SOLUTION: A heat conductive adhesive for a metallic heat transfer tube contains an acryl modified epoxy resin having a weight average molecular weight of 20,000 to 400,000 (A), a polyhydroxypolyether resin (an acryl modified epoxy resin is excluded) (B), at least one kind of crosslinking agent selected from the group consisting of a melamine resin, a block polyisocyanate compound and a resol type phenol resin (C) and a heat-conductive filler (D), and 1 to 60 pts.mass of the heat-conductive filler (D) based on total 100 pts.mass of a solid content of the acryl modified epoxy resin (A), the polyhydroxypolyether resin (B) and the crosslinking agent (C). |
