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Weather-proof anti-ultraviolet epoxy-resin powder coating and preparation method thereof

A technology of epoxy resin powder and epoxy resin, applied in the field of powder coatings, can solve the problems of poor acid resistance and organic solvent resistance, and achieve the effects of strong weather resistance, enhanced high-gloss performance, and smooth paint film

Inactive Publication Date: 2016-11-09
YIXING JUREN PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its weaknesses such as poor acid resistance and organic solvent resistance greatly limit its application.

Method used

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  • Weather-proof anti-ultraviolet epoxy-resin powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of weather-resistant and anti-ultraviolet epoxy resin powder coating of the present embodiment, calculated in parts by weight: 40 parts of hydrogenated bisphenol A type epoxy resin, 30 parts of novolak epoxy resin, 10 parts of barite powder, 25 parts of titanium dioxide , 0.3 parts of nano cerium dioxide, 0.8 parts of polyvinyl alcohol, 1.2 parts of modified micropowder wax, 3.5 parts of curing agent, 0.5 parts of ultraviolet absorber, 0.1 part of defoamer, and 0.4 part of leveling agent.

[0023] Its preparation method is as follows:

[0024] (1) Add barite powder and titanium dioxide to 8 times the weight of water, adjust the pH to 3, then add nano-cerium dioxide and polyvinyl alcohol, stir at 62°C for 1 hour, then adjust the pH to 7, and continue stirring 2h, then dried at 150°C for 5h, cooled and ground to 500 mesh to obtain modified filler;

[0025] (2) Mix hydrogenated bisphenol A type epoxy resin and novolac epoxy resin at 90°C for 10 minutes at a rotatio...

Embodiment 2

[0028] A kind of weather-resistant and anti-ultraviolet epoxy resin powder coating of the present embodiment is calculated by weight: 42 parts of hydrogenated bisphenol A type epoxy resin, 25 parts of novolak epoxy resin, 15 parts of barite powder, 20 parts of titanium dioxide , 0.4 parts of nano cerium dioxide, 1.3 parts of polyvinyl alcohol, 1.5 parts of modified micropowder wax, 4 parts of curing agent, 0.7 parts of ultraviolet absorber, 0.2 part of defoamer, and 0.6 part of leveling agent.

[0029] Its preparation method is as follows:

[0030] (1) Add barite powder and titanium dioxide to 9 times the weight of water, adjust the pH to 3, then add nano-cerium dioxide and polyvinyl alcohol, stir at 65°C for 1 hour, then adjust the pH to 7, and continue stirring 2h, then dried at 150°C for 6h, cooled and ground to 600 mesh to obtain modified filler;

[0031] (2) Mix hydrogenated bisphenol A epoxy resin and novolac epoxy resin at 92°C and 1000r / min for 12min to obtain a resin...

Embodiment 3

[0034] A kind of weather-resistant and anti-ultraviolet epoxy resin powder coating of the present embodiment, calculated in parts by weight: 45 parts of hydrogenated bisphenol A type epoxy resin, 20 parts of novolac epoxy resin, 20 parts of barite powder, 15 parts of titanium dioxide , 0.5 parts of nano cerium dioxide, 1.8 parts of polyvinyl alcohol, 1.7 parts of modified micropowder wax, 5 parts of curing agent, 0.8 part of ultraviolet absorber, 0.3 part of defoamer, and 0.8 part of leveling agent.

[0035] Its preparation method is as follows:

[0036] (1) Add barite powder and titanium dioxide to 12 times the weight of water, adjust the pH to 3, then add nano-cerium dioxide and polyvinyl alcohol, stir at 60°C for 1 hour, then adjust the pH to 7, and continue stirring 2h, then dried at 150°C for 6h, cooled and ground to 600 mesh to obtain modified filler;

[0037] (2) Mix hydrogenated bisphenol A epoxy resin and novolac epoxy resin at 95°C and 1200r / min for 10min to obtain ...

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Abstract

The invention relates to a weather-proof anti-ultraviolet epoxy-resin powder coating and a preparation method thereof. The coating is prepared from the following raw materials by weight: 40 to 45 parts of hydrogenated bisphenol A epoxy resin, 20 to 30 parts of phenolic epoxy resin, 10 to 20 parts of barite powder, 15 to 25 parts of titanium dioxide, 0.3 to 0.5 part of nanometer cerium dioxide, 0.5 to 2 parts of polyvinyl alcohol, 0.8 to 2 parts of modified superfine wax powder, 3 to 5 parts of a curing agent, 0.5 to 0.8 part of an ultraviolet absorbent, 0.1 to 0.3 part of a defoaming agent and 0.2 to 1 part of a leveling agent. The powder coating provided by the invention has high gloss, excellent weatherability and good ultraviolet resistance.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a weather-resistant and anti-ultraviolet epoxy resin powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating, which has the characteristics of no solvent, no pollution, recyclable, environmental protection, energy and resource saving, reduced labor intensity and high mechanical strength of the coating film. The application of powder coatings has surpassed water-based coatings and high-solid coatings in the coatings industry, and has become one of the most widely used coatings in the industry. The powder coating process solves the problems of flammability, explosion and environmental pollution in the traditional paint coating process, and its coating has superior performance and the coating process is simple. Epoxy resin is one of the very important anti-corrosion coating materia...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D5/03
CPCC09D163/00C08L2201/08C08L2205/025C08L2205/035C09D5/033C09D7/61C09D7/63C08L63/00C08L29/04C08L23/06C08K13/02C08K2003/3045C08K2003/2241C08K2003/2213C08K5/20C08K5/132
Inventor 钱剑峰
Owner YIXING JUREN PAINT
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