Powder coating material for metal corrosion prevention, preparation method and application method thereof
A powder coating and metal anti-corrosion technology, applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve problems such as poor layer compactness, and achieve the effects of high compactness, improved service life, and excellent adhesion performance.
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[0035] A preparation method of powder coating for metal anticorrosion, the method includes:
[0036] Crush the unsaturated polyester resin and bisphenol A epoxy resin to 100-200 mesh to obtain a mixed resin;
[0037] Add graphene powder, curing agent, leveling agent, benzoin and mixed resin into a high-speed mixer, and mix for 10-20 minutes at a temperature of 40-60°C and a rotation speed of 500-800r / min to obtain a mixture;
[0038] Add the mixture into a twin-screw extruder with a rotation speed of 200-300r / min, the temperature of the extruder cavity is 100-120℃, the temperature of the discharge port is 115-125℃, and melt extrusion;
[0039] After cooling the melt, it is crushed to 250-300 mesh to obtain powder coating.
[0040] A powder coating application method for metal anticorrosion, the method is:
[0041] Pass the powder coating through a 200-300 mesh sieve;
[0042] The powder coating is sprayed on the surface-treated metal sheet through an electrostatic spray gun, the paint fil...
Example Embodiment
[0043] Specific Example 1
[0044] A powder coating for metal anticorrosion. The raw materials include:
[0045]
[0046] Unsaturated polyester resin is polymerized by styrene, acrylate and vinyl acetate; the molecular weight of bisphenol A epoxy resin is 4000-5000; the particle size of graphene powder is 600 mesh; the curing agent is a tertiary amine curing agent ; The leveling agent is polydimethylsiloxane.
[0047] A preparation method of powder coating for metal anticorrosion, the method includes:
[0048] Crush the unsaturated polyester resin and bisphenol A epoxy resin to 100 meshes to obtain a mixed resin;
[0049] Add graphene powder, curing agent, leveling agent, benzoin and mixed resin into a high-speed mixer, and mix for 20 minutes at a temperature of 40°C and a rotation speed of 800r / min to obtain a mixture;
[0050] Add the mixture into a twin-screw extruder with a speed of 200r / min, the temperature of the extruder cavity is 100°C, the temperature of the discharge port is 1...
Example Embodiment
[0055] Specific Example 2
[0056] A powder coating for metal anticorrosion. The raw materials include:
[0057]
[0058] Unsaturated polyester resin is made by polymerization of styrene, acrylate and vinyl acetate; the molecular weight of bisphenol A epoxy resin is 5000-6000; the particle size of graphene powder is 400 mesh; the curing agent is an imidazole curing agent; The leveling agent is a polyether polyester modified organosiloxane.
[0059] A preparation method of powder coating for metal anticorrosion, the method includes:
[0060] Crush the unsaturated polyester resin and bisphenol A epoxy resin to 200 mesh to obtain a mixed resin;
[0061] Add graphene powder, curing agent, leveling agent, benzoin and mixed resin into a high-speed mixer, and mix for 10 minutes at a temperature of 60°C and a rotation speed of 500r / min to obtain a mixture;
[0062] Add the mixture into a twin-screw extruder with a rotation speed of 300r / min, the temperature of the extruder cavity is 120°C, the ...
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