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Environment-friendly coating based on cerium ion in-situ supported montmorillonite filler and preparation method of coating

A technology of environmentally friendly coatings and montmorillonite, applied in the field of coatings, can solve problems such as insufficient environmental protection, and achieve the effects of improving corrosion resistance, improving corrosion resistance, and good corrosion resistance

Inactive Publication Date: 2018-01-26
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a non-toxic, environmentally friendly and corrosion-resistant coating to solve the technical problem that the existing corrosion-resistant coatings are not environmentally friendly

Method used

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  • Environment-friendly coating based on cerium ion in-situ supported montmorillonite filler and preparation method of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a kind of environment-friendly coating based on cerium ion in situ loading montmorillonite filler, which includes equal amounts of the first component and the second component;

[0030] In terms of mass percentage, the first component includes the following components: 30% of epoxy resin, 5% of cerium ion in-situ loaded montmorillonite filler, 10% of titanium dioxide, 15% of modified zinc phosphate, 20% of toluene, wetting and dispersing Agent 3.5% and heavy calcium carbonate 16.5%; The cerium ion in-situ loaded montmorillonite filler is prepared by the following method: put montmorillonite in Ce(NO 3 ) 3 ·6H 2 In an aqueous solution of O, stir for 2 hours, then vacuumize, dry the obtained precipitated montmorillonite at 40-50°C, and grind it to a micron level; 3 ) 3 ·6H 2 The mass concentration in the O aqueous solution is 50g / L, the Ce(NO 3 ) 3 ·6H 2 Ce(NO 3 ) 3 ·6H 2 The mass concentration of O is 4.34g / L;

[0031] The second compo...

Embodiment 2

[0038] This embodiment provides a kind of environment-friendly coating based on cerium ion in situ loading montmorillonite filler, which includes equal amounts of the first component and the second component;

[0039] In terms of mass percentage, the first component includes the following components: 20% epoxy resin, 10% cerium ion in-situ loaded montmorillonite filler, 20% zinc oxide, 20% modified zinc phosphate, 10% methyl ethyl ketone, anti-settling agent 0.5% and kaolin 19.5%; the cerium ion in-situ loading montmorillonite filler is prepared by the following method: put montmorillonite into Ce(NO 3 ) 3 ·6H 2 In the aqueous solution of O, stir for 2.5h, then vacuumize, dry the obtained precipitated montmorillonite at 40°C, grind it to submicron level, and obtain it; wherein, the montmorillonite is in Ce(NO 3 ) 3 ·6H2 The mass concentration in the O aqueous solution is 48g / L, the Ce(NO 3 ) 3 ·6H 2 Ce(NO 3 ) 3 ·6H 2 The mass concentration of O is 4.5g / L;

[0040] Th...

Embodiment 3

[0047] This embodiment provides a kind of environment-friendly coating based on cerium ion in situ loading montmorillonite filler, which includes equal amounts of the first component and the second component;

[0048] In terms of mass percentage, the first component includes the following components: 50% of epoxy resin, 2% of cerium ion in-situ loaded montmorillonite filler, 2% of carbon black, 10% of modified zinc phosphate, 28% of isopropanol, Leveling agent 3% and barium sulfate 5%; This cerium ion in-situ loading montmorillonite filler is prepared by the following method: put montmorillonite into Ce(NO 3 ) 3 ·6H 2 In the aqueous solution of O, stir for 2 hours, then vacuumize, dry the obtained precipitated montmorillonite at 50°C, grind to micron level, and obtain; wherein, the montmorillonite is in Ce(NO 3 ) 3 ·6H 2 The mass concentration in the O aqueous solution is 52g / L, the Ce(NO 3 ) 3 ·6H 2 Ce(NO 3 ) 3 ·6H 2 The mass concentration of O is 4g / L;

[0049] Th...

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Abstract

The invention relates to the field of coatings, in particular to an environment-friendly coating based on cerium ion in-situ supported montmorillonite filler and a preparation method of the coating. The environment-friendly coating is prepared from equal numbers of first components and second components, wherein the first components comprise epoxy resin, the cerium ion in-situ supported montmorillonite filler, a coloring pigment, an anti-rusting pigment, a first organic solvent, an aid and filler; the cerium ion in-situ supported montmorillonite filler is prepared with a method shown as follows: montmorillonite is put in a cerium nitrate water solution, the mixture is stirred and vacuumized, the precipitated montmorillonite is dried and ground, and the cerium ion in-situ supported montmorillonite filler is obtained; the second components comprise equal numbers of polyamide curing agents and second organic solvents. The preparation method comprises steps as follows: (1) preparation of the first components; (2) preparation of the second components; (3) mixing of the first components and the second components in equal proportion. The environment-friendly coating has good corrosion resistance and is used as a coat of a metal material, and the corrosion resistance of the coat is improved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an environment-friendly coating based on cerium ion in-situ loaded montmorillonite filler and a preparation method thereof. Background technique [0002] The protection of aluminum alloys has long relied on chromate (hexavalent chromium) conversion coatings and epoxy primers. However, due to the toxicity of this substance, it has been restricted or banned by various countries. Rare earth ions (especially Ce 3+ ) can form a protective film on the surface of aluminum alloy, and reduce the corrosion rate of aluminum alloy by inhibiting the cathodic reaction of aluminum alloy corrosion. However, in organic coatings, researchers pay little attention to rare earth salts as inhibitor pigments at home and abroad. The reason is that the anions of rare earth salts used are generally NO 3- , Cl - Such as simple acid ions with high solubility, if used in the coating, when water penetrates into th...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/62
Inventor 林化强孙琳林鹏刘韶庆丁叁叁
Owner CRRC QINGDAO SIFANG CO LTD
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