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Novel environment-friendly high-corrosion-resistance zinc-aluminum coating

A green environmental protection, zinc-aluminum technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of high solvent volatilization, low hardness, high price, etc., and achieve the effect of excellent salt spray resistance, excellent performance and low price

Inactive Publication Date: 2021-01-29
CHONGQING EP ANTICORROSION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the zinc-aluminum coatings in the high-end market in China are all imported foreign products. The domestic zinc-aluminum coating technology is relatively backward. The current foreign zinc-aluminum coatings have high prices, unstable quality, short validity period, and strict storage management requirements. The paint has irritating odor, high solvent volatilization, low hardness, etc.

Method used

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  • Novel environment-friendly high-corrosion-resistance zinc-aluminum coating

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preparation example Construction

[0036] A method for preparing a green, environment-friendly, high-corrosion zinc-aluminum coating, comprising the following steps:

[0037] 1) Add zinc-aluminum powder to high-boiling-point alcohols, stir, wet and soak for 12 hours to obtain zinc-aluminum paste;

[0038] 2) Measure the zinc-aluminum slurry obtained in step 1) under stirring and slowly pour it into the green environmental protection resin until it is evenly dispersed, then filter to obtain the zinc-aluminum coating.

Embodiment 1

[0039] Embodiment 1: the preparation method of green environmental protection resin

[0040] A kind of green environment-friendly resin, its preparation method is: after taking 1 weight part of KH550, 4 weight parts of methyltrimethoxysilane and 5 weight parts of nano-titanium dioxide sol, after mixing and stirring, it is hydrolyzed with an acid solution of 0.9 times the mass of the solution, and then heated up to distill out The generated methanol / ethanol, after the distillation is completed, is added with lye to adjust the pH value of the solution to neutral to obtain a green resin.

Embodiment 2

[0041] Embodiment 2: the preparation method of green environmental protection resin

[0042] A kind of green environment-friendly resin, its preparation method is: after getting 2 weight parts of KH550, 3 weight parts of KH560, 4 weight parts of ethyl orthosilicate and 5 weight parts of nano-silica sols and mix and stir, use the acid of 0.8 times of solution quality After the solution is hydrolyzed, the temperature is raised to distill the generated methanol / ethanol. After the distillation is completed, lye is added to adjust the pH value of the solution to neutral to obtain a green resin.

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Abstract

The invention provides a preparation method of green and environment-friendly resin and a green and environment-friendly high-corrosion-resistance zinc-aluminum coating prepared by taking the green and environment-friendly resin as a raw material. A silane coupling agent and nano sol are mixed, and hydrolyzed by using acid liquor of which the mass is 0.3-1 time that of the solution to prepare theenvironment-friendly resin as the raw material, and high-boiling-point alcohols, zinc powder and aluminum powder are added to obtain the product. According to the environment-friendly high-corrosion-resistance zinc-aluminum coating, toxic and harmful substances such as chromic acid are not added so that the environment-friendly high-corrosion-resistance zinc-aluminum coating is environmentally friendly, the caoting has the advantages of strong adhesion, impact resistance, high hardness and excellent salt spray resistance; the problems that an existing zinc-aluminum coating is high in price, unstable in quality, short in validity period, strict in preservation and management requirements, high in solvent volatilization amount, low in hardness and the like are solved.

Description

technical field [0001] The invention is applied in the technical field of coatings, and in particular relates to a novel green, environment-friendly and high-corrosion zinc-aluminum coating. Background technique [0002] With the continuous progress of material civilization, people have higher and higher requirements for the quality of living environment. Protecting and improving the ecological environment and realizing sustainable economic and social development have become important value orientations for most countries to formulate development strategies for the new century. In June 1999, Europe passed a regulatory regulation on scrapped cars and their accessories. This regulation called "End of Life Vehicle Directive (EOLVD)" came into effect in 2006. Articles 4.2 and 6.3 of the regulations restrict the use of harmful substances such as lead, mercury, cadmium and hexavalent chromium, and stipulate that the chromium (Cr 6+ ) in a content not exceeding 2 grams. The pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/26C08G77/14C08K3/22C08K3/36C09D183/08C09D183/06C09D5/10C09D7/61
CPCC08G77/26C08G77/14C08K3/22C08K3/36C09D183/08C09D183/06C09D5/103C09D5/106C09D7/61C08K2201/011C08K2003/2241C08K2003/2244C08K2003/0893C08K2003/0812C08K3/08C08K3/04C08K3/34C08K3/00
Inventor 王秀玲严军
Owner CHONGQING EP ANTICORROSION TECH CO LTD
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