Preparation method of conductive carbon adhesive
A conductive carbon adhesive and temperature control technology, applied in the direction of conductive adhesives, adhesives, epoxy resin adhesives, etc., can solve the problems of low relative density, high cost, affecting the mechanical properties of adhesives, etc., and achieve good compatibility , good mechanical properties
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Embodiment 1
[0022] The invention provides a kind of preparation method of conductive carbon glue, comprising the following steps:
[0023] Step 1, get the epoxy resin of 100 weight parts and the dispersant of 3 weight parts, the organic solvent of 1 weight part mix uniformly, obtain the first mixture that viscosity is 500 centipoise;
[0024] Step 2, get 2-5 parts by weight of graphite powder with a particle size less than 20 μm, drop into 100 parts by weight of concentrated sulfuric acid, add 2 parts by weight of sodium nitrate and potassium permanganate of 5 parts by weight while stirring, and control the reaction temperature to be low Stir at 25°C for 30min, then raise the temperature to 40°C and stir for 40min, then add 20 parts by weight of oxalic acid solution, and after the solution turns bright yellow, cool to room temperature to obtain a liquid A containing graphene oxide;
[0025] Step 3, after adding 10 parts by weight of emulsifier and 20 parts by weight of xylene to liquid A ...
Embodiment 2
[0030] The invention provides a kind of preparation method of conductive carbon glue, comprising the following steps:
[0031] Step 1, get the epoxy resin of 100 weight parts and the dispersant of 4 weight parts, the organic solvent of 5 weight parts mix uniformly, obtain the first mixture that viscosity is 1500 centipoise;
[0032] Step 2: Get 4 parts by weight of graphite powder with a particle size less than 20 μm, drop into 100 parts by weight of vitriol oil, add 4 parts by weight of sodium nitrate and potassium permanganate of 8 parts by weight while stirring, and control the reaction temperature below 25 Stir at ℃ for 40 minutes, then raise the temperature to 40 ℃ and stir for 50 minutes, then add 30 parts by weight of oxalic acid solution, and after the solution is bright yellow, cool to room temperature to obtain liquid A containing graphene oxide;
[0033] Step 3, after adding 12 parts by weight of emulsifier and 25 parts by weight of xylene to liquid A in step 2 and ...
Embodiment 3
[0038] The invention provides a kind of preparation method of conductive carbon glue, comprising the following steps:
[0039] Step 1, get the epoxy resin of 100 weight parts and the dispersant of 5 weight parts, the organic solvent of 10 weight parts mix uniformly, obtain the first mixture that viscosity is 2000 centipoise;
[0040] Step 2: Get 5 parts by weight of graphite powder with a particle size less than 20 μm, drop into 100 parts by weight of concentrated sulfuric acid, add 5 parts by weight of sodium nitrate and potassium permanganate of 10 parts by weight while stirring, and control the reaction temperature below 25 Stir at ℃ for 60 minutes, then raise the temperature to 40 ℃ and stir for 60 minutes, then add 40 parts by weight of oxalic acid solution, and after the solution is bright yellow, cool to room temperature to obtain liquid A containing graphene oxide;
[0041] Step 3, after adding 15 parts by weight of emulsifier and 30 parts by weight of xylene to liquid...
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