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Novel composite water-based rust conversion primer and preparation method thereof

A rust conversion, water-based technology, applied in primers, coatings, anti-corrosion coatings, etc., can solve the problems of complex implementation process, corrosion of steel substrate, low efficiency, etc.

Pending Publication Date: 2021-02-23
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are a large number of active groups in the residual acid of this system, which makes the coating unstable and water-resistant; in addition, the residual acid will further corrode the steel substrate
In addition, the traditional primer process is a step-by-step coating of primer and topcoat, which needs to comprehensively consider the adhesion between primer, topcoat, substrate and rust, and the implementation process is complicated and inefficient

Method used

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  • Novel composite water-based rust conversion primer and preparation method thereof
  • Novel composite water-based rust conversion primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 10.0g of deionized water into the three-necked flask, then add 1.0g of emulsion stabilizer EE, heat in a water bath to 70°C, wait until the emulsion stabilizer EE is fully dissolved in water, cool down to room temperature, and take 10.0g for later use. Add 60.0 g of styrene, acrylic acid copolymer emulsion and 30.0 g of water-based acrylic emulsion into beaker A, add 5.0 g of the reagent prepared above under the stirring condition of rotating speed of 600 r / min, stir for 5-10 min, and prepare water-based polymer emulsion for later use. In B beaker, dissolve 1.5g of dispersant (LD-6302) in 50.0g of deionized water, add 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite, and 15.0g of kaolin under the condition of magnetic stirring or mechanical stirring until mixing Uniformly, the pigment slurry is obtained. Take the C beaker and add 46.0g of water-based polymer emulsion, add 30.0g of pigment slurry under stirring, stir evenly, then add 8g of prepared rust...

Embodiment 2

[0028] Add 10.0g of deionized water into the three-necked flask, then add 1.0g of emulsion stabilizer EE, heat in a water bath to 70°C, wait until the emulsion stabilizer EE is fully dissolved in water, cool down to room temperature, and take 10.0g for later use. Add 50.0 g of styrene, acrylic acid copolymer emulsion and 40.0 g of water-based acrylic emulsion into beaker A, add 5.0 g of the above-prepared reagent under the stirring condition of rotating speed of 600 r / min, stir for 5-10 minutes, and prepare water-based polymer emulsion for later use. In B beaker, dissolve 1.5g of dispersant (LD-6302) in 50.0g of deionized water, add 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite, and 15.0g of kaolin under the condition of magnetic stirring or mechanical stirring until mixing Uniformly, the pigment slurry is obtained. Take the C beaker and add 52.0g of water-based polymer emulsion, add 25.0g of pigment filler under stirring, stir evenly, then add 8g of prepared ...

Embodiment 3

[0030] Add 10.0g of deionized water into the three-necked flask, then add 1.0g of emulsion stabilizer EE, heat in a water bath to 70°C, wait until the emulsion stabilizer EE is fully dissolved in water, cool down to room temperature, and take 10.0g for later use. Add 40.0 g of styrene, acrylic acid copolymer emulsion and 50.0 g of water-based acrylic emulsion into beaker A, add 5.0 g of the above-prepared reagent under the stirring condition of rotating speed of 600 r / min, stir for 5-10 min, and prepare water-based polymer emulsion for later use. In B beaker, dissolve 1.5g of dispersant (LD-6302) in 50.0g of deionized water, add 15.0g of modified aluminum tripolyphosphate, 20.0g of sericite, and 15.0g of kaolin under the condition of magnetic stirring or mechanical stirring until mixing Uniformly, the pigment slurry is obtained. Take the C beaker and add 58.0g of water-based polymer emulsion, add 25.0g of pigment slurry under stirring, stir evenly, then add 8g of prepared rust...

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Abstract

The invention discloses a novel composite water-based rust conversion primer and a preparation method thereof. The novel composite water-based rust conversion primer is prepared from water-based polymer emulsion, a rust conversion agent, an antirust pigment, a filler, an antifoaming agent, a dispersing agent, a coalescing agent, an emulsion stabilizer, a thickener, a leveling agent and deionized water. According to the novel composite water-based rust conversion primer and the preparation method thereof, one-time coating is achieved in the using process, the field construction process is simplified, the primer is more convenient and practical, the primer can effectively react with rust to generate a stable black chelate, and the anti-corrosion purpose is achieved by forming the isolation effect.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion, in particular to a novel composite water-based rust conversion primer and a preparation method thereof. Background technique [0002] The corrosion of steel materials not only causes huge economic losses, but also consumes a lot of steel resources, which does not meet the requirements of the era of green development. In order to reduce the loss caused by corrosion, people have taken many measures, the most common and economical of which is to form an anti-corrosion protective layer on the metal surface, so as to separate the contact between the metal and the corrosive medium. [0003] The traditional metal anti-corrosion protection layer needs to go through a cumbersome steel derusting process, and more labor is invested, but the derusting effect is often not ideal, and it may even lead to hazards such as thinning of the steel body, and the construction efficiency is low. The emergen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/06C09D5/08C09D5/00C09D7/63C09D7/61
CPCC09D4/06C09D5/084C09D5/002C09D7/63C09D7/61
Inventor 彭浩平王树皓席世亨雷云邓嵩吴长军苏旭平
Owner CHANGZHOU UNIV
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