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A kind of water-based anticorrosion primer and preparation method thereof

An anti-corrosion primer, water-based technology, applied in the field of coatings, can solve the problems of coating defects, performance degradation, no longer providing protection, etc., to achieve the effect of improving anti-settling, improving long-term anti-corrosion performance, and increasing distance

Active Publication Date: 2020-11-24
南京东顶新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the long-term use of the coating, small molecular substances, especially inorganic substances, are easily separated from the coating system, not only can no longer provide protection, but also cause defects in the coating, which in turn leads to a decline in various properties

Method used

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  • A kind of water-based anticorrosion primer and preparation method thereof
  • A kind of water-based anticorrosion primer and preparation method thereof
  • A kind of water-based anticorrosion primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The water-based anti-corrosion primer is composed of the following components in parts by weight: 85 parts of water-based epoxy resin, 20 parts of modified nano-silica, 1.5 parts of BYK-012, 0.3 parts of BYK-420, 5 parts of BYK-4510, 20 parts of amine, 25 parts of deionized water.

[0029] The preparation method of the modified nano silicon dioxide is as follows: dissolving the modifying agent in the DMF aqueous solution, adding the nano silicon dioxide, stirring and dispersing for 0.5h, filtering, washing and drying. Wherein, the volume ratio of DMF to water in the DMF aqueous solution is 7:1.

[0030] The preparation method of waterborne anticorrosion primer, comprises the steps:

[0031] (1) Weigh each component in proportion, add the modified nano silicon dioxide and defoamer to half of the deionized water, stir evenly, and grind until the fineness is less than 30 μm;

[0032] (2) Add water-based epoxy resin, rheology modifier, adhesion promoter, curing agent and ...

Embodiment 2

[0034] The water-based anti-corrosion primer is composed of the following components in parts by weight: 80 parts of water-based epoxy resin, 15 parts of modified nano-silica, 1 part of BYK-018, 0.1 part of BYK-410, 3 parts of BYK-4510, diethyl 15 parts of aminopropylamine, 20 parts of deionized water.

[0035] The preparation method of the modified nano silicon dioxide is as follows: dissolving the modifying agent in the DMF aqueous solution, adding the nano silicon dioxide, stirring and dispersing for 0.8 hours, filtering, washing and drying. Wherein, the volume ratio of DMF to water in the DMF aqueous solution is 6:1.

[0036] The preparation method of waterborne anticorrosion primer, comprises the steps:

[0037] (1) Weigh each component in proportion, add the modified nano silicon dioxide and defoamer to half of the deionized water, stir evenly, and grind until the fineness is less than 30 μm;

[0038] (2) Add water-based epoxy resin, rheology modifier, adhesion promote...

Embodiment 3

[0040] The water-based anti-corrosion primer is composed of the following components in parts by weight: 90 parts of water-based epoxy resin, 25 parts of modified nano-silica, 2 parts of BYK-022, 0.5 parts of BYK-411, 8 parts of BYK-4511, two parts of 25 parts of ethyltriamine, 30 parts of deionized water.

[0041] The preparation method of the modified nano silicon dioxide is as follows: dissolving the modifying agent in the DMF aqueous solution, adding the nano silicon dioxide, stirring and dispersing for 1 hour, filtering, washing and drying. Wherein, the volume ratio of DMF to water in the DMF aqueous solution is 8:1.

[0042] The preparation method of waterborne anticorrosion primer, comprises the steps:

[0043] (1) Weigh each component in proportion, add the modified nano silicon dioxide and defoamer to half of the deionized water, stir evenly, and grind until the fineness is less than 30 μm;

[0044] (2) Add water-based epoxy resin, rheology modifier, adhesion promot...

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Abstract

The invention belongs to the field of coating, and particularly relates to water-based anticorrosive primer and a preparation method thereof. The primer is prepared from the following components in parts by weight: 80-90 parts of water-based epoxy resin, 15-25 parts of modified nano-silicon dioxide, 1-2 parts of a defoaming agent, 0.1-0.5 part of a rheological additive, 3-8 parts of adhesion promoter, 15-25 parts of a curing agent and 20-30 parts of deionized water. According to the primer, modified nano-silicon dioxide serving as filler is favorable to improving the anti-settling, anti-sagging and other performance of primer, and silicon dioxide nano-particles can form a compact film layer to prevent permeation of oxygen, water, oil, steam, organic substances and other corrosive mediums to achieve the aim of corrosion prevention; and the modifier prepared by the method can be used for modifying nano-silicon dioxide, the nano-silicon dioxide surface can be linked to relatively large groups, the distance among nano-particles is increased, nano-particles can be well dispersed in polarized water due to amino on the modifier, the dispersibility and stability can be further improved, and a more compact film layer can be formed.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based anticorrosion primer and a preparation method thereof. Background technique [0002] The whole world suffers huge economic losses caused by metal corrosion every year, especially in high temperature, high humidity, and high corrosion environments. Metal corrosion greatly hinders economic development and technological progress. Applying anti-corrosion coatings on the metal surface, isolating the corrosive medium through anti-corrosion coatings and avoiding its contact with the metal substrate is an effective form of metal anti-corrosion. As the main means of metal corrosion protection, it has been widely used in marine engineering, energy Industry, municipal construction and other major fields of the national economy. [0003] Under the dual promotion of policy guidance and technological innovation, according to environmental protection requirements and market de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/63
Inventor 周道贵
Owner 南京东顶新材料科技有限公司
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