A kind of preparation method of modified inorganic anticorrosion pigment

An anti-corrosion pigment and inorganic technology, applied in anti-corrosion coatings, coatings and other directions, to achieve the effect of improving anti-corrosion performance, cheap source and simple preparation process

Inactive Publication Date: 2018-08-03
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Through the analysis and comparison of existing technologies, it is found that there is no preparation technology for iron-cobalt co-doped conductive zinc oxide nano-anti-corrosion pigments, and this type of anti-corrosion performance is very good, and has extremely broad application prospects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the molar ratio of glycine to zinc nitrate being 2:1, the ratio of the amount of iron source to zinc source is 0.25:10; the ratio of amount of substance to cobalt source and zinc source is 0.25:10. Weigh the above raw materials and place them in a mortar, grind them thoroughly until the system becomes viscous and transparent, then transfer the transparent liquid to a crucible, and stay at 210°C until no water vapor is released, then continue to calcine, and heat up to 500°C After calcination for 5 hours, it was rapidly cooled to obtain a reddish-brown powder. The particle size of the product observed by a transmission electron microscope is about 50 nm, and the product has good dispersibility.

Embodiment 2

[0027]According to the molar ratio of glycine to zinc nitrate being 2:1, the ratio of the amount of iron source to zinc source is 0.25:10; the ratio of amount of substance to cobalt source and zinc source is 0.25:10. Weigh the above-mentioned raw materials and place them in a mortar, grind them thoroughly until the system is viscous and transparent, then transfer the transparent liquid to a crucible, and stay at 210°C until no water vapor is released, then continue to calcine, and heat up to 700°C After being calcined for 1 hour, it was rapidly cooled to obtain a reddish-brown powder. The particle size of the product observed by a transmission electron microscope is about 80 nm, and the product has good dispersibility.

Embodiment 3

[0029] According to the molar ratio of glycine to zinc nitrate being 2:1, the ratio of the amount of iron source to zinc source is 0.25:10; the ratio of amount of substance to cobalt source and zinc source is 0.5:10. Weigh the above raw materials and place them in a mortar, grind them thoroughly until the system becomes viscous and transparent, then transfer the transparent liquid to a crucible, and stay at 210°C until no water vapor is released, then continue to calcine, and heat up to 600°C After calcination for 2 hours, it was cooled rapidly to obtain a reddish-brown powder. The particle size of the product observed by a transmission electron microscope is about 70 nm, and the product has good dispersibility.

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PUM

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Abstract

The invention belongs to the technical field of inorganic chemicals, and particularly relates to a preparation method of a modified inorganic anti-corrosive pigment. A zinc oxide nano anti-corrosive pigment is modified by mixing iron and cobalt commonly, thus the anti-corrosive performance of the inorganic anti-corrosive pigment zinc oxide is significantly improved; moreover, the long-time drying process of a precursor is saved during the preparation process, thus the iron-cobalt doped type zinc oxide nano anti-corrosive pigment with nano-level grain size is simply and quickly prepared. The prepared nano powder has the advantages of good dispersing property, small grain size, uniform size distribution, high chemical stability and excellent anti-corrosive performance, and others.

Description

technical field [0001] The invention belongs to the field of inorganic chemistry, and in particular relates to a preparation method of a modified inorganic anticorrosion pigment. Background technique [0002] As an anti-corrosion pigment, nano-zinc oxide has great application potential in the anti-corrosion coating industry, but its anti-corrosion performance needs to be improved. The nano-composite pigment formed by doping or surface modification can improve the anti-corrosion performance of zinc oxide. Rostami M. El Saeed et al. (Rostami M, Rasouli S, Ramezanzadeh B, et al. Electrochemical investigation of the properties of Co doped ZnO nanoparticles as a corrosion inhibiting pigment for modifying corrosion resistance of the epoxy coating. Corrosion Science, 2014, 88(11 ):387-399) studied the anticorrosion properties of cobalt-doped zinc oxide nanopigments. They added single zinc oxide nano-pigments and zinc oxide nano-pigments doped in different proportions to epoxy res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08
CPCC09D5/084
Inventor 刘金库沈娟薛西子苏玉云王凤蕊张靓玉苗敏
Owner EAST CHINA UNIV OF SCI & TECH
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