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Water-based epoxy anticorrosive paint for containers, and preparation method and application thereof

A technology of water-based epoxy and anti-corrosion coatings, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc. It can solve the problems of water-based epoxy coatings such as poor resistance to humidity and heat and salt spray, and is not environmentally friendly, so as to improve the system Compatibility, effect of improving mechanical properties and chemical resistance

Inactive Publication Date: 2021-04-13
HAOLISEN COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because traditional solvent-based coatings are not environmentally friendly, the commonly used coatings are generally environmentally friendly green water-based epoxy coatings, but water-based epoxy coatings are still inferior to traditional solvent-based coatings in terms of moisture resistance and salt spray resistance. Water-based epoxy coatings that can meet the requirements of environmental protection for the performance of the paint film on the surface of containers is a problem that those skilled in the art need to solve urgently

Method used

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  • Water-based epoxy anticorrosive paint for containers, and preparation method and application thereof
  • Water-based epoxy anticorrosive paint for containers, and preparation method and application thereof
  • Water-based epoxy anticorrosive paint for containers, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The influence of embodiment 1 different types of dispersants on coating properties

[0026] Comparative analysis of common dispersant categories, dispersants are divided into small molecular weight ammonium salts / sodium salts, medium molecular weight phosphates or complexes, and high molecular weight main chain / anchor group polymer dispersants. And prepare the paint by:

[0027] S0. Put an appropriate amount of epoxy resin and deionized water in a three-necked flask and heat it to 60-70°C, add butanol to disperse evenly, then add emulsifier and dispersant in the dispersed state, and add polydimethylsilane in turn after the dispersion is even The oxane and silane coupling agents are dispersed and emulsified at high speed, and finally form a silicone-modified epoxy emulsion with suitable particle size and good condition through condensation polymerization.

[0028] S1. Mix and disperse pigments and fillers with deionized water and some functional additives evenly, then d...

Embodiment 2

[0035] The impact of the equivalent ratio of embodiment 2 different epoxy resins and amines on coating properties

[0036] Prepare the anti-corrosion coating according to the following scheme:

[0037] The coating includes two components, A and B, and the B component includes an amine curing agent, a B component functional auxiliary agent and an alcohol ether organic solvent, and the A component includes 30.0% by weight. ~35wt.% organosilicon-modified epoxy emulsion, described organosilicon-modified epoxy emulsion by weight percentage, comprises the following components:

[0038] 40.0-45.0wt.% epoxy resin; 5.0-6.0wt.% butanol; 10.0-15.0wt.% hydroxyl-terminated polydimethylsiloxane; 5.0-7.0wt.% emulsifier; 4.0-5.0wt.% polymer dispersant; 10.0-13.0wt.% silane coupling agent, and the balance is deionized water.

[0039] The B component functional additives include an anti-flash rust agent, a drier and a pH regulator, the anti-flash rust agent is FR-355, and the amount added is ...

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Abstract

The invention relates to the technical field of anticorrosive paint, and in particular relates to water-based epoxy anticorrosive paint for containers as well as a preparation method and application thereof. According to the water-based epoxy resin modified by blending organosilicon in the anticorrosive paint, hydroxyl of the organosilicon and epoxy of the epoxy resin are subjected to ring-opening reaction so as to form stable Si-0-C bonds; and meanwhile, the internal stress of the system is reduced by utilizing a coupling agent, so that the compatibility of the system is improved. The mechanical properties and chemical resistance of the epoxy resin are improved. The water-based epoxy anticorrosive paint uses a high-molecular dispersing agent, and relatively strong steric hindrance and good dispersion stability are generated through the group adsorption effect of a high-molecular-weight main chain and the anchoring effect of a high-molecular polymer containing an anchoring group on the chain of the high-molecular-weight main chain; the wetting dispersity of the pigment and filler in an emulsion is improved, and the problems of pigment and filler precipitation, remarkable viscosity change and the like are solved after long-time storage.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a water-based epoxy anti-corrosion coating for containers and its preparation method and application. Background technique [0002] Container transportation is a modern means of transportation. A container is a special container designed according to the characteristics of goods and transportation needs. It is a modern transportation equipment suitable for various transportation methods such as railways, roads, and water transportation. Unlike general cargo packaging, in addition to serving as a container, it also plays a fast and efficient role in loading and unloading, handling, transshipment, reloading, and organizing intermodal transport between various modes of transportation. Due to the wide range of use of containers, the protection of containers has also become a difficult problem. In view of the fact that containers are exposed to the sun for a long time,...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D183/04C09D5/08C09D7/63C09D7/61C09D7/65
CPCC08L2205/03C09D5/08C09D163/00C09D7/61C09D7/63C09D7/65C08L83/04C08L101/00C08K5/54C08K3/34C08K3/04C08K13/02
Inventor 陈进山周贤刘薇薇赵颖李银串孔凡桃
Owner HAOLISEN COATING SHANGHAI
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