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A high-temperature-resistant, anti-aging low-voc polyurethane anti-corrosion coating

An anti-corrosion coating and anti-aging technology, applied in polyurea/polyurethane coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of poor heat resistance of epoxy resin, excellent anti-aging performance, and decreased adhesion, and achieve low VOC content , Anti-aging performance improvement, the effect of reducing emissions

Active Publication Date: 2021-08-31
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN1580160 discloses "a heat-resistant anti-corrosion coating". The invention uses epoxy resin to enhance the adhesion of silicone, but the heat resistance of epoxy resin is poor, and long-term use will inevitably lead to a decrease in adhesion, and it cannot Construction at low temperature
[0005] At present, there is no water-based anti-corrosion coating with high temperature resistance, excellent anti-aging performance, environmental protection model and low cost in the prior art.

Method used

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  • A high-temperature-resistant, anti-aging low-voc polyurethane anti-corrosion coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating consists of the following components in parts by weight:

[0028] Component A: 12 parts of polyester polyol resin; 1.25 parts of nano-titanium dioxide; 1.25 parts of nano-silicon carbide; 50 parts of talc; 23 parts of solvent; 1.5 parts of AT-203;

[0029] Component B: 9 parts of solvent-free isocyanate resin (Basonat HI 100 ap).

[0030] After the above-mentioned components A and B were mixed and stirred evenly, a sample board was prepared, and then the sample board was cured for 7 days, and the performance test was carried out. The performance data of the anti-corrosion paint film on the surface of the sample board are shown in Table 1 below.

Embodiment 2

[0032] A high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating consists of the following components in parts by weight:

[0033] Component A: 18 parts of polyester polyol resin; 1 part of nano titanium dioxide; 1 part of nano silicon carbide; 40 parts of mica iron oxide; 20 parts of solvent; 1 part of AT-203; 1 part of organic bentonite; 0.45 parts of KH560.

[0034] Component B: 8 parts of solvent-free isocyanate resin (Basonat HI 100 ap).

[0035] After the above-mentioned components A and B were mixed and stirred evenly, a sample board was prepared, and then the sample board was cured for 7 days, and the performance test was carried out. The performance data of the anti-corrosion paint film on the surface of the sample board are shown in Table 1 below.

Embodiment 3

[0037] A high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating consists of the following components in parts by weight:

[0038] Component A: 18 parts of polyester polyol resin; 1.4 parts of nano-titanium dioxide; 1.4 parts of nano-silicon carbide; 33 parts of talc powder; 23 parts of mica powder; 30 parts of solvent; 0.5 parts of AT-203; share.

[0039] Component B: 14 parts of solvent-free isocyanate resin (Basonat HI 100 ap).

[0040] After mixing and stirring the above-mentioned components A and B evenly, prepare a sample plate, then cure the sample plate for 7 days, and conduct a performance test. The performance data of the anti-corrosion paint film on the surface of the sample plate are as follows figure 1 Shown in Table 1.

[0041] attached by figure 1 It can be known from the tabular data in: the anticorrosion coating of the present invention has carried out 5000 hours heat-resistant aging test at 200 ± 2 ℃. The test results show that ...

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Abstract

A high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating, which is composed of two components, A and B. Component A consists of 10-20 parts of polyphenylene ring polyester polyol resin, 40-60 parts of pigments and fillers, 20 parts of ~40 parts of solvent and 1~3 parts of additives. The B component is multifunctional polyisocyanate. The A and B components are mixed and stirred according to the weight ratio of 10:0.5~1.5. The solvent of component A is a combination of tert-butyl acetate, dimethyl carbonate and dibasic acid ester, which has the characteristics of low toxicity and low VOC content; component B uses solvent-free isocyanate resin, which further reduces the VOC content of anti-corrosion coatings ; Nano-titanium dioxide and nano-silicon carbide are added to the filler, which improves the heat resistance of the polyurethane coating, making it heat-resistant up to 200 ° C, and enhancing the anti-corrosion performance of the coating.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a high-temperature-resistant, anti-aging low-VOC polyurethane anti-corrosion coating. Background technique [0002] With the development of the economy and the continuous improvement of environmental protection requirements, green environmental protection has become an important development goal of the coatings industry. The level of VOC (Volatile Organic Compounds) content is an important indicator for judging whether the coating is environmentally friendly. At present, most of the anti-corrosion coatings used in the market are solvent-based, and the emission of a large amount of VOC will pollute the ecological environment. The country advocates "sustainable development". Under the current general trend of environmental protection, water-based anti-corrosion coatings are on the rise. However, the application of water-based anti-corrosion coatings in the market ...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D5/08C09D7/20C09D7/61
CPCC08K2003/2241C08K2201/011C08L2201/08C09D5/08C09D5/18C09D175/06C09D7/20C09D7/61C08K3/34C08K3/22C08K3/346C08K13/02
Inventor 刘改利徐飞鹏茹伟峰董荣娟
Owner 洛阳双瑞防腐工程技术有限公司
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