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Nano-modified polyaspartate polyurea heavy anti-corrosion coating and preparation method thereof

An aspartate, nano-modified technology, applied in anti-corrosion coatings, polyurea/polyurethane coatings, anti-fouling/underwater coatings, etc., can solve the problems of complex construction process, high VOC content, poor corrosion resistance, etc. Achieve the effect of preventing dead precipitation, improving coating efficiency and reducing content

Active Publication Date: 2020-09-15
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still many defects in its performance, such as high VOC content, short service life, poor corrosion resistance, complex construction technology, etc., which cannot meet the needs of the society

Method used

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  • Nano-modified polyaspartate polyurea heavy anti-corrosion coating and preparation method thereof
  • Nano-modified polyaspartate polyurea heavy anti-corrosion coating and preparation method thereof
  • Nano-modified polyaspartate polyurea heavy anti-corrosion coating and preparation method thereof

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preparation example Construction

[0039] The nano-modified polyaspartate polyurea heavy-duty anticorrosion coating provided by the embodiment of the present invention and preparation method thereof comprise the following steps:

[0040] Step S110: preparing component A, which specifically includes the following steps:

[0041] Step S111: Dispersing and stirring the polyaspartic resin, diluent, dispersant and part of the defoamer to obtain a first mixture.

[0042] In some embodiments, dispersing and stirring the polyaspartic ester resin, diluent, dispersant and part of the defoamer to obtain the first mixture comprises the following steps:

[0043] Specifically, add polyaspartic acid ester resin, diluent, dispersant, and part of antifoaming agent into the dispersion tank, use a mixer to disperse at low speed for 15-20 minutes, and control the line speed at 10-20m / min to obtain the first mixture .

[0044]Further, the polyaspartic ester resin is NH1420 or NH1220 or NH1520 or NH2850 of Covestro or F420 or F520...

Embodiment 1

[0070] A kind of nano-modified polyaspartate polyurea heavy-duty anticorrosion coating in the present embodiment 1, its formula composition is as follows:

[0071]

[0072]

Embodiment 2

[0074] In this embodiment, a nano-modified polyaspartate polyurea heavy-duty anti-corrosion coating has a formula composition as follows:

[0075]

[0076]

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Abstract

The invention provides a nano-modified polyaspartate polyurea heavy anti-corrosion coating and a preparation method thereof. The low-viscosity characteristic of the polyaspartic acid ester is utilized; polyaspartic acid esters with different reaction activities are compounded to be used as main body resin of the anti-corrosion coating; meanwhile, a certain amount of low-polarity low-surface-energyhydroxyl resin is spliced; low-viscosity aliphatic isocyanate is used as a curing agent; the surface functionalized graphene and the carbon nanotubes are added into a coating system to form a conductive path among zinc powder particles, so that the use efficiency of zinc powder in the coating is improved, the use amount of the zinc powder is reduced, a bottom-layer system, a middle-layer system and a surface-layer system of a traditional anticorrosive coating are changed into one-layer systems, and the coating efficiency is improved.

Description

technical field [0001] The invention relates to a novel environment-friendly anticorrosion coating, in particular to a preparation method of a nano-modified polyaspartate polyurea heavy anticorrosion coating and the polyaspartate polyurea heavy anticorrosion coating. Background technique [0002] The economic loss caused by corrosion of metal materials in our country is very serious every year, accounting for about 5% of the gross national product, causing a large number of infrastructure equipment to be scrapped, which has become the main cause of equipment loss. my country's current corrosion loss is higher than that of developed countries, and it is generally accepted internationally that the loss caused by marine corrosion is far greater than the loss caused by natural disasters. From the perspective of the economics of anti-corrosion treatment, the use of anti-corrosion coatings is the most economical and effective method. [0003] Marine anti-corrosion coatings refer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02C09D5/10C09D5/16C09D7/62C09D7/61
CPCC08K2003/0893C08K2003/2241C08L2201/08C09D5/106C09D5/1687C09D175/02C08K9/00C08K3/042C08K3/041C08K3/08C08K7/00C08K3/22C08K13/06
Inventor 王宝柱温喜梅王伟李灿刚邵春妍
Owner QINGDAO AIR NEW MATERIALS