Ultra-thin heat dissipation film and preparation method thereof
A heat dissipation film, ultra-thin technology, applied in the field of ultra-thin heat dissipation film and its production, can solve the problems of increased thermal resistance, unfavorable use, difficulty in punching graphite pressed materials, etc., achieve high thermal conductivity and heat dissipation performance, easy to process and use, excellent The effect of thermal performance
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Embodiment 1
[0061] Such as figure 1As shown, the ultra-thin heat dissipation film of the present invention includes a heat dissipation layer group 1 and a protective film layer 2 sequentially from the inside to the outside, wherein the heat dissipation layer group includes a heat dissipation adhesive film layer 11 and a heat dissipation metal film layer 12 .
[0062] 1. Make heat dissipation layer group
[0063] 1.1 Preparation of thermal adhesive film layer
[0064] 1) Preparation of magnetized high thermal conductivity powder
[0065] The carbonyl method commonly used in this field is used to cover the surface of the graphite powder with magnetic nickel to form a nickel-coated graphite powder material. That is, under the conditions of normal pressure and 40-100 ° C, carbon monoxide reacts with active metal nickel to form nickel carbonyl, and then the formed nickel carbonyl is circulated through the thermal decomposer repeatedly, so that the carbonyl is continuously deposited on the su...
Embodiment 2
[0091] Such as figure 2 As shown, the ultra-thin heat dissipation film of the present invention includes an adhesive layer 3 , a heat dissipation layer group 1 , and a protective film layer 2 sequentially from the inside to the outside.
[0092] 1. Make heat dissipation layer group
[0093] 1.1 Preparation of thermal adhesive film layer
[0094] 1) Preparation of magnetized high thermal conductivity powder
[0095] The carbonyl method commonly used in this field is used to cover the surface of the graphite powder with magnetic nickel to form a nickel-coated graphite powder material. That is, under the conditions of normal pressure and 40-100 ° C, carbon monoxide reacts with active metal nickel to form nickel carbonyl, and then the formed nickel carbonyl is circulated through the thermal decomposer repeatedly, so that the carbonyl is continuously deposited on the surface of the original graphite powder particles Decompose and deposit on it to produce high-purity nickel-coat...
Embodiment 3
[0114] Such as image 3 As shown, the ultra-thin heat dissipation film of the present invention includes heat dissipation layer group 1, adhesive layer 3, heat dissipation layer group 1, and protective film layer 2 sequentially from inside to outside.
[0115] Except for repeating step 2 of embodiment 2 to prepare three stacked heat dissipation layer groups, other steps are the same as embodiment 1.
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