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Waterborne epoxy anticorrosive paint with modified vermiculite being used as functional filler and preparation method thereof

A technology of anti-corrosion coatings and water-based epoxy, which is applied in the field of coatings, can solve the problems of high toxicity and flammability of volatile organic compounds, threats to the atmosphere and human health, and environmental pollution, and achieve a good structure of modified vermiculite nanosheets, Excellent anti-corrosion performance and simple preparation method

Inactive Publication Date: 2014-08-27
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the heavy-duty anti-corrosion coatings currently on the market are solvent-based coatings, which contain volatile organic compounds (VOCs) that are highly toxic and flammable, and are likely to pose a threat to the atmosphere and human health.
According to statistics, at present, about 1 million tons of organic solvents are discharged into the atmosphere every year in my country's paint coating industry, which not only seriously pollutes the environment, but also wastes a lot of resources.
In addition, the accumulation of a large number of VOCs will also bring safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of modified vermiculite:

[0022] Select raw ore vermiculite with a good lamellar structure, crush it to 200 mesh with a ball mill to obtain vermiculite powder, then add the vermiculite powder to a flask containing 5mol / L sulfuric acid solution, heat up to 80°C for 2 hours under rapid stirring, and obtain Acid-modified vermiculite powder, the acid-modified vermiculite powder is filtered, dried and added to a flask equipped with a silane coupling agent KH570 accounting for 0.5% of the mass of the vermiculite powder, and heated to 60 ° C for 1 hour under rapid stirring to obtain Modified vermiculite powder;

[0023] Preparation of water-based anti-corrosion coatings:

[0024] Add the raw materials into the mixing tank of the disperser according to the mass percentage of one-component water-based epoxy resin emulsion AE605 45%, dispersant 0.5%, pH regulator N, N-dimethylethanolamine 2%, and part of deionized water 10%, and low speed Stir for 20 minutes, then ...

Embodiment 2

[0027] Preparation of modified vermiculite:

[0028] Select the raw ore vermiculite with a good lamellar structure, crush it to 300 mesh with a ball mill to obtain vermiculite powder, then add the vermiculite powder to the flask containing an acidic solution of 2mol / L hydrochloric acid, heat up to 80°C under rapid stirring for 2 Hours, acid-modified vermiculite powder is obtained, acid-modified vermiculite powder is filtered, and after drying, join in the flask that silane coupling agent KH550 accounts for 1% of the quality of vermiculite powder is housed, heat up to 50 ℃ under rapid stirring and process 1 hours, the modified vermiculite powder can be obtained;

[0029] Preparation of water-based anti-corrosion coatings:

[0030] Put the raw materials into the mixing tank of the dispersing machine according to the mass percentage of one-component water-based epoxy resin emulsion AE605 25%, dispersant 1%, pH regulator N, N-dimethylethanolamine 3% and part of deionized water 5%...

Embodiment 3

[0033] Preparation of modified vermiculite:

[0034] Select raw ore vermiculite with a good lamellar structure, crush it to 200 mesh with a ball mill to obtain vermiculite powder, then add the vermiculite powder to the flask containing an acidic solution of 8 mol / L nitric acid, heat up to 80°C under rapid stirring for 2 Hours, acid-modified vermiculite powder is obtained, acid-modified vermiculite powder is filtered, and after drying, join in the flask that silane coupling agent KH550 accounts for 3% of vermiculite powder quality is housed, heat up to 70 ℃ under rapid stirring and process 1 hours, the modified vermiculite powder can be obtained;

[0035] Preparation of water-based anti-corrosion coatings:

[0036]Put the raw materials into the mixing tank of the dispersing machine according to the mass percentage of one-component water-based epoxy resin emulsion AE605 35%, dispersant 0.8%, pH regulator N, N-dimethylethanolamine 2%, and part of deionized water 7%, at a low spe...

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Abstract

The invention relates to waterborne epoxy anticorrosive paint with modified vermiculite being used as functional filler and a preparation method thereof. The anticorrosive paint is composed of waterborne epoxy resin emulsion, rust resisting pigment, modified vermiculite, normal filler, a dispersing agent, a flatting agent, an antifoaming agent, a pH modifier N, N-dimethylethanolamine, a thickening agent and the balance deionized water according to the mass percent, wherein the rust resisting pigment is zinc phosphate or aluminium triphosphate or ferrotitanium powder or iron oxide red, and the normal filler is talcum powder or barium sulfate or carbon black. The monified vermiculite is used for preparation, the steps for preparing the waterborne expoxy anticorrosive paint are achieved, the modified vermiculite is used as anticorrosive functional filler, the nano stratified structure and heat stability are used for improving the anticorrosive performance and the heat resistance performance of the coat. The waterborne epoxy anticorrosive paint is excellent in comprehensive performance and capable of meeting the demand for corrosion prevention of a storage tank, a pipeline, a bridge and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based epoxy anticorrosion coating using modified vermiculite as a functional filler and a preparation method thereof. Background technique [0002] Most of the heavy-duty anti-corrosion coatings currently on the market are solvent-based coatings, which contain volatile organic compounds (VOCs) that are highly toxic and flammable, and are likely to pose a threat to the atmosphere and human health. According to statistics, at present, about 1 million tons of organic solvents are discharged into the atmosphere by my country's paint coating industry every year, which not only seriously pollutes the environment, but also wastes a lot of resources. In addition, the accumulation of a large number of VOCs will also bring potential safety hazards. At present, there have been several explosions and casualties caused by volatile organic compounds in solvent-based anti-corrosion co...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 闫世友陈朝阳谢永新王军华范艳伟
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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