Hyper-branched epoxy zinc-rich coating and preparation method thereof
A technology of epoxy zinc-rich paint and zinc powder, which is applied in the field of paint, can solve the problems of affecting the water penetration resistance and corrosion resistance of the coating, restricting the application of graphene, and reducing the adhesion of the coating, so as to achieve storage stability and durability. Improved corrosion performance, good flexibility, and low VOC content
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0045] The preparation method of polyaniline grafted graphene oxide of the present invention preferably comprises the following steps:
[0046] 1) Carrying out grafting reaction of m-phenylenediamine and graphene oxide in an ethanol solution, sequentially refining, washing and drying the grafted product to obtain m-phenylenediamine grafted graphene oxide;
[0047] 2) Mix m-phenylenediamine-grafted graphene oxide, aniline, ammonium persulfate solution and ethanol solution for reaction, and sequentially refine, wash and dry the reaction product to obtain polyaniline-grafted graphene oxide.
[0048] The mass volume ratio of m-phenylenediamine, graphene oxide and ethanol solution in step 1) of the present invention is preferably 2-4g: 0.1-0.5g: 5-8mL, more preferably 3g: 0.2-0.4g: 6-7mL , more preferably 3g:0.3g:6.5mL.
[0049] The m-phenylenediamine of the present invention has large steric hindrance and can effectively improve the agglomeration problem of graphene oxide; the two ...
Embodiment 1
[0062] 2 kg of m-phenylenediamine was uniformly mixed in 5 L of ethanol solution (55% by mass), then 0.1 kg of graphene oxide was added, mixed well, and grafted at 78° C. for 3 h. The obtained grafted product was sieved to obtain a powder with a particle size of 0.48 μm, which was washed twice with absolute ethanol and then dried at 72° C. for 6 h to obtain m-phenylenediamine grafted graphene oxide. After m-phenylenediamine grafted graphene oxide was mixed uniformly in 6L ethanol solution (mass fraction is 55%), then add 2kg aniline, finally add 2L ammonium persulfate solution (mass fraction of ammonium persulfate is 6%), Reacted at 6°C for 8 hours, and sieved the product after the reaction to obtain a powder with a particle size of 0.46 μm, washed twice with absolute ethanol and dried at 72°C for 6 hours to obtain polyaniline-grafted graphene oxide.
[0063] 1kg flake zinc powder (particle size is 10 μm), 3kg spherical zinc powder (particle size is 10 μm), 0.9kg diethylenetri...
Embodiment 2
[0065] After mixing 3.8kg of m-phenylenediamine in 7.8L of ethanol solution (70% by mass), 0.45kg of graphene oxide was added, mixed well, and grafted at 88°C for 1 hour. The obtained grafted product was sieved to obtain a powder with a particle size of 0.32 μm, which was washed with absolute ethanol three times and then dried at 78° C. for 4 h to obtain m-phenylenediamine grafted graphene oxide. After m-phenylenediamine grafted graphene oxide was mixed uniformly in 8L ethanol solution (mass fraction is 70%), then add 4kg aniline, finally add 4L ammonium persulfate solution (mass fraction of ammonium persulfate is 9%), React at 1°C for 6 hours, and sieve the product after the reaction to obtain a powder with a particle size of 0.32 μm, wash with absolute ethanol three times and dry at 78°C for 4 hours to obtain polyaniline-grafted graphene oxide.
[0066] 1.2kg flake zinc powder (particle size 18μm), 4.8kg spherical zinc powder (particle size 18μm), 0.7kg p-phenylenediamine, 0...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More