Sodium zinc phosphate/graphene enhanced waterborne epoxy amino baking varnish
A technology of epoxy amino and water-based epoxy, which is applied in the direction of epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of greatly reducing the amount of toxic anti-rust pigments and increasing the amount of anti-rust pigments, and achieves easy processing, Strong emulsifying ability and good compatibility
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Embodiment 1
[0032] (1) Preparation of GO by modified Hummers method:
[0033]Assemble a 250 ml reaction bottle in an ice-water bath, mix 2 parts by weight of graphite powder, 2 parts by weight of sodium nitrate, 30 parts by weight of concentrated sulfuric acid and 10 parts by weight of concentrated nitric acid, and add 8 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 10 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 min at about 98 °C, add 5 parts by weight of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge the graphite oxide suspension at a speed of 5000 r / pm, and wash it with deionized water until The separation liquid wa...
Embodiment 2
[0047] (1) Preparation of GO by modified Hummers method:
[0048] Assemble a 250 ml reaction bottle in an ice-water bath, mix 2 parts by weight of graphite powder, 2 parts by weight of sodium nitrate, 30 parts by weight of concentrated sulfuric acid and 10 parts by weight of concentrated nitric acid, and add 10 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 14 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 minutes at about 98 ℃, add 10 parts by weight of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge the graphite oxide suspension at 5000 r / pm, and wash it with deionized water until The separation liquid was neu...
Embodiment 3
[0062] (1) Preparation of GO by modified Hummers method:
[0063] Assemble a 250 ml reaction bottle in an ice-water bath, mix 3 parts by weight of graphite powder, 3 parts by weight of sodium nitrate, 40 parts by weight of concentrated sulfuric acid and 20 parts by weight of concentrated nitric acid, and add 10 parts by weight of potassium permanganate within 2 hours , control the temperature not to exceed 5°C, after stirring for 16 hours, remove the ice bath, transfer the reaction bottle to an electromagnetic water bath, and continue electromagnetic stirring at room temperature for 24 hours, then slowly add 100 parts by weight of deionized water, and raise the temperature to After stirring for 20 minutes at about 98 ℃, add 15 parts of hydrogen peroxide to reduce the residual potassium permanganate, so that the solution turns bright yellow, then centrifuge at 5000 r / pm to separate the graphite oxide suspension, and wash it with deionized water until separation Liquid to neutra...
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