A kind of graphene fluorine modified epoxy self-layering powder coating and preparation method thereof
A powder coating and graphene technology, applied in the field of coatings, can solve the problems of poor adhesion and impact resistance, no heavy anti-corrosion performance, limited addition amount, etc., to achieve excellent chemical resistance, excellent electrochemical protection, Effective anti-corrosion protection
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Embodiment 1
[0055] A kind of preparation technology of graphene fluorine modified epoxy self-layering powder coating, comprises the steps:
[0056] S1, 20kg phenolic epoxy powder resin, 10kg fluorocarbon powder resin, 20kg modified bisphenol A epoxy resin, 5kg polyurethane resin, 5kg aliphatic blocked polyisocyanate, 40kg spherical zinc powder, 5.4kg graphene, 4.5 Add kg dimethylpolysiloxane and 4.5 kg 2-mercaptobenzothiazole into the high-speed mixer, stir for 3 minutes to obtain a uniform mixture;
[0057] S2. Melting and extruding the homogeneous mixture at a temperature of 115° C. to obtain a mixture in a hot melt state;
[0058] S3, pressing the hot-melt mixture into continuous flakes, cooling to normal temperature, and then crushing into small flakes with an average length of 1.5 mm, grinding them into powder, and passing through a 180-mesh sieve to obtain a mixed powder;
[0059] S4. Mix the mixed powder with 80kg flake zinc powder, and bind for 60min at a binding temperature of 7...
Embodiment 2
[0061] A kind of preparation technology of graphene fluorine modified epoxy self-layering powder coating, comprises the steps:
[0062] S1, 20kg phenolic epoxy powder resin, 10kg fluorocarbon powder resin, 20kg modified bisphenol A epoxy resin, 5kg polyurethane resin, 5kg aliphatic blocked polyisocyanate, 20kg spherical zinc powder, 2.7kg graphene, 2.25 Add kg dimethyl polysiloxane and 2.25 kg 2-mercaptobenzothiazole into the high-speed mixer, stir for 3 minutes to obtain a uniform mixture;
[0063] S2. Melting and extruding the homogeneous mixture at a temperature of 115° C. to obtain a mixture in a hot melt state;
[0064] S3, pressing the hot-melt mixture into continuous flakes, cooling to normal temperature, and then crushing into small flakes with an average length of 1.5 mm, grinding them into powder, and passing through a 180-mesh sieve to obtain a mixed powder;
[0065] S4. Mix the mixed powder with 40kg flake zinc powder, and bind for 60min at a binding temperature o...
Embodiment 3
[0067] A kind of preparation technology of graphene fluorine modified epoxy self-layering powder coating, comprises the steps:
[0068] S1, 40kg phenolic epoxy powder resin, 30kg fluorocarbon powder resin, 40kg modified bisphenol A epoxy resin, 15kg polyurethane resin, 15kg aliphatic blocked polyisocyanate, 20kg spherical zinc powder, 5.1kg graphene, 5kg Add dimethylpolysiloxane and 5kg 2-mercaptobenzothiazole into the high-speed mixer, stir for 3min, and obtain a uniform mixture;
[0069] S2. Melting and extruding the homogeneous mixture at a temperature of 115° C. to obtain a mixture in a hot melt state;
[0070] S3, pressing the hot-melt mixture into continuous flakes, cooling to normal temperature, and then crushing into small flakes with an average length of 1.5 mm, grinding them into powder, and passing through a 180-mesh sieve to obtain a mixed powder;
[0071] S4. Mix the mixed powder with 40kg flake zinc powder, and bind for 60min at a binding temperature of 70°C and...
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