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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

Active Publication Date: 2017-01-04
ZHEJIANG COLORAY TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned coatings have excellent resistance to medium penetration and good resistance to sudden temperature changes, but the dispersion of pigments in the coating is poor, and the anti-corrosion performance is poor. When using it, it needs to be pre-coated with primer, which increases the construction cost and prolongs the construction period.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention belongs to the technical field of anticorrosive pigments, and relates to a glass flake-based anticorrosive pigment and a preparation method thereof. The preparation method comprises the steps that glass flakes are added into hydrochloric acid for acid treatment, and filtering and washing are conducted to obtain acid-treated glass flake filter cakes; the acid-treated glass flake filter cakes are added into deionized water, stirring is conducted for 30 min, the liquid is heated to constant temperature, the pH value is regulated, a ferric trichloride solution and a sodium hydroxide solution are dropwise added under the constant-temperature stirring condition simultaneously, after dropwise adding is completed, reacting by stirring is conducted for 1-4 h, and glass flake iron oxide slurry is obtained; the glass flake iron oxide slurry is cooled to constant temperature, anline is added, stirring is conducted for a period of time at constant temperature, then an ammonium persulfate solution is added, reacting by stirring is conducted, suction filtration is conducted, washing is conducted with deionized water until filtrate is colorless, polyaniline outer membrane glass flake iron oxide filter cakes are obtained, drying is conducted, and the finished product is obtained. Accordingly, the dispersity of the anticorrosive pigment in resin can be improved, the anticorrosive property is enhanced, and priming paint does not need to be applied.

Description

technical field [0001] The invention belongs to the technical field of anticorrosion pigments, and relates to a glass flake-based anticorrosion pigment and a preparation method thereof. Background technique [0002] Coating refers to a type of liquid or solid material that can form a thin film on the surface of an object under certain conditions for protection, decoration or other special functions (insulation, rust prevention, mildew resistance, heat resistance, etc.). Because most of the early paints used vegetable oil as the main raw material, they are also called paints. Now synthetic resins have mostly or completely replaced vegetable oils, so they are called paints. Pigment is a kind of colored fine particle powder substance, generally insoluble in water, and can be dispersed in various media such as oil, solvent and resin. As an additive in paint, pigment has other protective functions besides coloring function. Mica iron oxide is a flaky anti-rust pigment with exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06C09C3/10C09D5/08
CPCC01P2006/22C09C1/00C09C3/006C09D5/084
Inventor 卓仲标
Owner ZHEJIANG COLORAY TECH DEV
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