Graphene modified inorganic anticorrosive coating, preparation method thereof and graphene modified inorganic anticorrosive coating layer
A graphene modification and anti-corrosion coating technology, applied in anti-corrosion coatings, fire-resistant coatings, coatings, etc., can solve the problems of graphene non-hydrophilic, graphene dispersion difficulty, metal corrosion, etc., to achieve good shielding effect and low cost , the effect of good anti-corrosion performance
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[0038] Set forth below the preparation method of graphene modified inorganic anticorrosion coating of the present invention in detail, figure 1 Show the preparation process flowchart of the graphene modified inorganic anticorrosion coating of one embodiment of the present invention, as figure 1 The preparation method shown includes: placing graphene and a dispersant in water for primary mixing to obtain a graphene dispersion; placing an inorganic adhesive and a passivator in water for secondary mixing to obtain a mixed material; The anti-corrosion filler and the graphene dispersion liquid are added into the material and mixed three times to obtain the graphene-modified inorganic anti-corrosion coating.
[0039] First, graphene and dispersant are placed in water and mixed once to obtain a graphene dispersion, wherein the first mixing includes:
[0040] The dispersant is placed in water for primary dispersion to obtain a dispersion liquid, and then graphene is added to the disp...
Embodiment 1
[0050] 1) Mix 10g of acrylic acid sodium salt polymer (Houhuan, HD2008) and 80g of deionized water, ultrasonically disperse for 20min, and stir at a high speed of 700rad / min for 20min to obtain a dispersion. Then add 10g of graphene powder obtained by liquid phase exfoliation method (Baotailong company, diameter 10μm~20μm, thickness 10nm~20nm) into the dispersion liquid, ultrasonically disperse for 30min, stir at 1000rad / min at high speed for 30min, and then sand mill 60min to obtain a uniformly dispersed graphene dispersion.
[0051] 2) Add 25g of phosphate inorganic adhesive (Zhengzhou Yucai Phosphate Chemical Factory, aluminum dihydrogen phosphate) into the container, add 20g of deionized water and 4g of chromium trioxide, stir at 1050rad / min at high speed for 30min, and stir evenly. A mixture is obtained.
[0052] 3) Add 35g of aluminum powder, 3g of zinc phosphate, 3g of precipitated barium sulfate and 10g of graphene dispersion into the mixed material, and stir at a hig...
Embodiment 2
[0055] 1) Mix 5 g of polycarboxylate (Shanghai Zicheng International Trade Co., Ltd., 650D) and 94 g of deionized water, disperse ultrasonically for 20 min, and stir at 1050 rad / min at high speed for 20 min to obtain a dispersion. Then add 1g of graphene powder obtained by redox (Baotailong company, diameter 6μm ~ 10μm, thickness <10nm) into mixture A, ultrasonically disperse for 30min, continue high-speed stirring for 30min, and then sand mill for 60min to obtain a uniformly dispersed Graphene dispersion.
[0056] 2) Put 30g of silicate adhesive (Shandong Xinmaoyuan Chemical Co., Ltd., sodium silicate) into the container, add 15g of deionized water, 5g of zirconium salt passivator (Ningbo Jianwei Environmental Protection Technology Co., Ltd., JW- 01 zirconium solution), stirred at a high speed of 1050rad / min for 30min, and stirred evenly to obtain a mixed material.
[0057] 3) Add 20 g of zinc phosphate, 10 g of aluminum tripolyphosphate, 10 g of aluminum powder and 10 g of ...
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