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Single-component epoxy coating and preparation method thereof

An epoxy coating, one-component technology, applied in the field of coatings, can solve the problems of inapplicable substrates and corrosive environments, poor adhesion of light metal substrates, complicated and complicated operations, etc., and achieves a simple and fast preparation method, not easy to fall off or Cracking, good adhesion effect

Active Publication Date: 2014-04-16
COSCO KANSAI PAINT & CHEM TIANJIN +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional one-component coatings contain only one film-forming substance (that is, an epoxy resin), which has relatively single performance and cannot be applied to all substrates and corrosive environments, but the advantage is that it is convenient for construction. Substrate can be applied directly
The two-component epoxy resin has two kinds of epoxy resins, and has the composite properties of the two kinds of epoxy resins at the same time. It has a wider range of applications, and the effect is better under certain conditions. , so the two epoxy resins need to react with the curing agent in a certain proportion to provide excellent performance. Therefore, during construction, the two epoxy resins need to be prepared separately and mixed in strict accordance with the manufacturer's ratio, and finally prepared separately The curing agent (such as purchasing a single barrel of curing agent separately) is added to the mixture of two epoxy resins to make it cured and cross-linked, so as to obtain a paint film with the properties of two epoxy resins at the same time. The operation is very cumbersome and complicated, which affects work efficiency. , the remaining paint will also cause waste
However, if the curing agent is added to the epoxy resin mixture in advance, the two epoxy resins will be cured together due to the active epoxy groups that are directly cross-linked through the curing agent (that is, they have been cured before use to form paint film), the substrate can no longer be painted
[0004] In addition, the existing epoxy coatings only have good adhesion to iron-based substrates, but poor adhesion to light metal substrates with smooth surfaces such as aluminum substrates and galvanized parts

Method used

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  • Single-component epoxy coating and preparation method thereof
  • Single-component epoxy coating and preparation method thereof
  • Single-component epoxy coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]

[0026]

[0027] The preparation method is: put 12 parts by weight of epoxy resin (YD011X75), 26 parts of high molecular weight epoxy resin (ALAKYD9205), and 0.4 parts by weight of silane coupling agent (KBM403) into the dispersion kettle, stir evenly, and then Add the following components respectively: 11 parts by weight of iron red powder, 24 parts by weight of talc powder, 5 parts by weight of anti-rust pigment, 4 parts by weight of dehydrating agent (OFM) and some solvents, disperse at high speed for 30 minutes, and then use sand mill grinder or three-roll mill to standard fineness, put 1.6 parts by weight of ketimine, 0.2 parts by weight of defoamer (AC-300) and 2 parts by weight of thixotropic agent (HPA202) under low-speed stirring, and mix After uniformity, filter and seal the package.

Embodiment 2

[0029] raw material name

[0030]

[0031] The preparation method is: put 14 parts by weight of epoxy resin (YD011X75), 24 parts of high molecular weight epoxy resin (ALAKYD9205), and 0.7 parts by weight of silane coupling agent (KBM403) into the dispersion kettle, stir evenly, and then Add the following components respectively: 10 parts by weight of iron red powder, 23 parts by weight of talcum powder, 6 parts by weight of antirust pigment, 6 parts by weight of dehydrating agent (OFM) and some solvents, disperse at high speed for 30 minutes, and then use sand mill grinder or three-roll mill to standard fineness, add 2 parts by weight of ketimine, 0.3 parts by weight of antifoaming agent (AC-300) and 3 parts by weight of thixotropic agent (HPA202) under low-speed stirring, and mix After uniformity, filter and seal the package.

Embodiment 3

[0033]

[0034] The preparation method is as follows: put 15 parts by weight of epoxy resin (YD011X75), 22 parts of high molecular weight epoxy resin (ALAKYD9205), and 0.8 parts by weight of silane coupling agent (KBM403) into the dispersion kettle, stir evenly, and start stirring Add the following components respectively: 9 parts by weight of iron red powder, 22 parts by weight of talcum powder, 7 parts by weight of antirust pigment, 7 parts by weight of dehydrating agent (OFM) and some solvents, disperse at high speed for 30 minutes, and then use sand mill grinder or three-roll mill to standard fineness, put 2.6 parts by weight of ketimine, 0.4 parts by weight of antifoaming agent (AC-300) and 4 parts by weight of thixotropic agent (HPA202) under low-speed stirring, and mix After uniformity, filter and seal the package.

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Abstract

The invention discloses a single-component epoxy coating which comprises the following components in parts by weight: 12-16 parts of epoxy resin, 22-26 parts of modified epoxy resin, 0.4-0.8 part of a silane coupling agent, 9-11 parts of iron oxide red powder, 22-24 parts of talcum powder, 5-7 parts of anti-rust pigment, 4-7 parts of a dehydrating agent, 1-3 parts of ketimine, 0.2-0.4 part of an antifoaming agent, 2-4 parts of a thixotropic agent and 10-14 parts of a mixed solvent, wherein the epoxy resin, the modified epoxy resin and the ketimine can be dissolved in the same component. Therefore, the coating has the advantage that the traditional single-component epoxy coating is convenient in construction, and also has crosslinking characteristics of double-component epoxy resin coatings.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a one-component epoxy coating and a preparation method thereof. Background technique [0002] At present, epoxy resin coatings are widely used in the field of anti-corrosion coatings due to their good anti-corrosion performance, strong adhesion to iron-based substrates, and low price. According to different application requirements, they can be divided into one-component epoxy coatings coatings and two-component epoxy coatings. [0003] Traditional one-component coatings contain only one film-forming substance (that is, an epoxy resin), which has relatively single performance and cannot be applied to all substrates and corrosive environments, but the advantage is that it is convenient for construction. The base material can be applied directly. The two-component epoxy resin has two kinds of epoxy resins, and has the composite properties of the two kinds of epoxy resins at the same time....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12
Inventor 郭永亮
Owner COSCO KANSAI PAINT & CHEM TIANJIN
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