Glass flake-based anticorrosive pigment and preparation method thereof
A glass flake and anti-corrosion pigment technology, applied in anti-corrosion coatings, inorganic pigment treatment, chemical instruments and methods, etc., can solve the problems of increasing construction cost, prolonging construction period, poor anti-corrosion performance, etc. The effect of anti-corrosion performance and good product performance
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Embodiment 1
[0027] A preparation method of glass flake-based anticorrosion pigment, is characterized in that, comprises the following steps:
[0028] A, processing glass flakes: adding glass flakes to hydrochloric acid, carrying out acid treatment, filtering and washing, to obtain acid-treated glass flake filter cake;
[0029] B. Preparation of slurry: Add the acid-treated glass flake filter cake into deionized water, stir for 30 minutes, heat to a constant temperature, adjust the pH value, add ferric chloride solution and sodium hydroxide solution dropwise under constant temperature stirring conditions, and add dropwise After that, stir and react for 1 to 4 hours to obtain glass flake iron oxide slurry;
[0030] C. Preparation of polyaniline outer membrane: cool the glass flake iron oxide slurry to a constant temperature, add aniline, stir at a constant temperature for a period of time, then add ammonium persulfate solution, stir for reaction, suction filter, wash the filtrate with deion...
Embodiment 2
[0033] Preparation of glass flake-based anticorrosion pigments: add glass flakes to hydrochloric acid in a reaction kettle, the glass flakes are 80 mesh (particle size 40-200μm), the concentration of hydrochloric acid is 0.75mol / L, the mass of glass flakes is the same as the solid-liquid concentration of hydrochloric acid The ratio is 130g / L, the treatment temperature is 70°C, the treatment time is 45min, filter; add the filtered product into deionized water, stir for 30min, keep the temperature at 85°C, adjust the pH value to 3.3, and add ferric chloride and hydrogen dropwise at the same time Sodium oxide solution, stirring for 2.5 hours after the dropwise addition, the mass ratio of the added amount of ferric chloride (calculated as ferric oxide) to the acid-treated glass flakes is 0.15, the concentration of ferric chloride is 0.9mol / L, and the sodium hydroxide The concentration of the solution is 2.25mol / L; cool down to 25°C, add aniline and stir for 45min, add ammonium pers...
Embodiment 3
[0036] Example 3 is basically the same as Example 2, except that the acid treatment temperature of the glass flakes is 80°C.
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