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Preparation process of nano iron oxide coating dispersion system

A nano-iron oxide, dispersion system technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings and other directions, can solve problems such as unfavorable dispersion, agglomeration, application troubles, etc., to facilitate uniformity and stability, ensure dispersion, The effect of preventing product agglomeration

Active Publication Date: 2022-08-05
铜陵同达兴实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the drying process of the precursor gel, with the continuous evaporation of water, there will be gaps between the gels, and with the subsequent drying, it is easy to form a strong chemical bond between the particles, resulting in agglomeration that is not easy to disperse. It is not conducive to dispersion during the use of paint, which brings great troubles to the actual application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of nano-iron oxide coating dispersion system (with FeCl 3 example):

[0022] (1) Take 10L FeCl with a concentration of 0.3mol / L 3 The solution was heated up to 65°C in a water bath, and then was stopped by adding ammonia water dropwise to adjust the pH to 8. After the precipitation reaction was completed, 500g of sodium dodecylbenzenesulfonate was added and mixed evenly. After cooling to room temperature, 3L of trichloride was used. Methane is extracted to obtain an extraction glue;

[0023] (2) placing the above-mentioned extraction glue in an ultrasonic disperser and dispersing for 1.5h with a power of 960W to obtain a dispersed slurry;

[0024] (3) the above-mentioned dispersed slurry is concentrated in a vacuum environment to a moisture content of ≤15%, then taken out and placed in a microwave dryer for microwave drying to obtain iron oxide yellow for subsequent use;

[0025] (4) after the above-mentioned iron oxide yellow is ground and pulverized, pr...

Embodiment 1 and comparative example 1-3

[0057] Detect above-mentioned embodiment 1 and comparative examples 1-3:

[0058] (1) Select a number of iron plates with a size of 100 × 100 cm, the surface is smoothed with sandpaper, and the surface is cleaned with acetone and dried for later use;

[0059] (2) The coatings prepared in the above-mentioned Example 1 and Comparative Examples 1-3 were selected to coat the surface of the iron plate after the above-mentioned treatment, respectively, and then fixed and tested for performance.

[0060] The specific detection methods are shown in Table 1 below:

[0061] Table 1:

[0062] Test items testing method Reference standard hardness pencil drawing GB / T6793-86 Acid resistance Hydrochloric acid method GB1763-79 Alkali resistance caustic soda method GB1763-79 Salt spray resistance - GB1771-79

[0063] The specific test results are shown in Table 2 below (the test results are based on the mottled surface of the replacement cl...

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Abstract

The invention provides a preparation process of a nano iron oxide coating dispersion system, and relates to the technical field of nano iron oxide processing. The preparation process of the nano iron oxide coating dispersion system mainly comprises the steps of reaction extraction, dispersion treatment, concentration and drying, iron oxide red preparation, surface modification, dewatering and mixing, coating dispersion system preparation and the like. The defects in the prior art are overcome, agglomeration among nanoparticles is effectively reduced by preparing and modifying the nano iron oxide, and the nanoparticles are conveniently dispersed in liquid, so that the prepared coating has good and stable corrosion resistance and is convenient for actual production, sales and use.

Description

technical field [0001] The invention relates to the technical field of nanometer iron oxide processing, in particular to a preparation process of a nanometer iron oxide paint dispersion system. Background technique [0002] Iron oxide exists in many different forms, and different forms of iron oxide show different colors. Iron oxide is non-toxic and inexpensive, and is an important substrate with excellent performance widely used in various fields such as building materials, coatings, and rubber. When the particle size of iron oxide reaches the nanometer level, since the specific surface area and surface energy will increase significantly with the decrease of particle size, the small size effect will be highlighted, especially the scattering ability and surface covering power of visible light waves will decrease. Presenting a certain "transparent" state; at the same time, many potential physical and chemical properties, such as magnetism, catalytic performance, etc., can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D163/00C09D5/08C09D5/084C08K2003/2272C08K2201/014C08K2201/011C08K9/00C08K9/04C08K3/22
Inventor 储茂德张曼
Owner 铜陵同达兴实业有限责任公司
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