Heat-conducting paint and preparation thereof and aluminum-based composite material using heat-conducting paint for coating
A technology of aluminum-based composite materials and thermally conductive coatings, which is applied in the direction of epoxy resin coatings, polyurea/polyurethane coatings, and devices for coating liquids on the surface. Breakdown and other problems, to achieve the effect of outstanding thermal conductivity, strong thermal conductivity, excellent high pressure resistance
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Embodiment 1
[0034] Prepare high-voltage resistant thermally conductive coatings (marked as A1) and aluminum-based composites (marked as B1) suitable for aluminum substrates in the following manner.
[0035] (1) The preparation method of aluminum-based coating A1 is as follows:
[0036] (a) Add 14.5 parts of n-butyl acetate and 20 parts of dimethyl glutarate into the reaction kettle, and add 40 parts of polyurethane resin sequentially under the conditions of heating (60-70°C) and stirring (600 rpm) Estane ® 5703 TPU and 5 parts of epoxy resin D.E.R.331, then heat and stir for 3 hours; when the resin is completely dissolved until clear and transparent, cool the mixed resin solution to room temperature;
[0037] (b) While stirring at room temperature, sequentially add 10 parts of curing agent CYMEL ® 303. Catalyst 0.5 part NACURE ® 2107 and 10 parts of AlN as a thermally conductive filler, stirred at a high speed at room temperature, and mixed uniformly to obtain aluminum-based coating...
Embodiment 2
[0043] The high-voltage resistant thermally conductive coating (marked as A2) and the aluminum-based composite (marked as B2) suitable for aluminum matrix were prepared in the following manner.
[0044] (1) The preparation method of aluminum-based coating A2 is as follows:
[0045] (a) Add 20 parts of dimethyl succinate and 19.8 parts of dimethyl glutarate to the reactor, and add 30 parts of polyurethane resin in sequence under heating (60-70°C) and stirring (600 rpm) Estane ® 5715 TPU and 10 parts of epoxy resin D.E.R.352, then heat and stir for 3 hours; when the resin is completely dissolved until clear and transparent, cool the mixed resin solution to room temperature;
[0046] (b) While stirring at room temperature, sequentially add 5 parts of curing agent CYMEL ® 325. Catalyst 0.2 parts NACURE ® 3525 and thermally conductive filler 8 parts AlN and 7 parts Al 2 o 3, stirring at a high speed at room temperature, and mixing uniformly to obtain aluminum-based coating ...
Embodiment 3
[0052] Prepare high-voltage resistant thermally conductive coatings (marked as A3) and aluminum-based composites (marked as B3) suitable for aluminum substrates in the following manner.
[0053] (1) The preparation method of aluminum-based coating A3 is as follows:
[0054] (a) Add 34.7 parts of propylene glycol methyl ether acetate to the reaction kettle, and add 38 parts of polyurethane resin in sequence under heating (60-70°C) and stirring (600 rpm) Estane ® 5719 TPU and 7 parts of epoxy resin D.E.R.354, reheat and stir for 3 hours; when the resin is completely dissolved until clear and transparent, cool the mixed resin solution to room temperature;
[0055] (b) While stirring at room temperature, sequentially add 8 parts of curing agent Resimene ® R-747, catalyst 0.3 parts NACURE ® 5225 and thermally conductive filler 8 parts AlN and 4 parts Al 2 o 3 , stirred at high speed at room temperature, and mixed uniformly to obtain aluminum-based coating A3.
[0056] (2) T...
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