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High-performance outdoor matte powder coating and preparation method thereof

A powder coating, high-performance technology, applied in powder coatings, anti-corrosion coatings, coatings, etc., can solve the problems of inability to achieve matting effect, poor dispersion of inorganic particles, affecting the application of powder coatings, etc., achieve good matting effect and improve weather resistance , low cost effect

Pending Publication Date: 2022-01-04
宁波爱甬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

If an inorganic matting agent is used, it will cause problems such as poor dispersion of inorganic particles in the coating, hard precipitation during storage, and poor mechanical properties of the coating. The coating is easy to peel off, which seriously affects the application of this type of powder coating; When using an organic matting agent, it cannot achieve a good matting effect

Method used

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  • High-performance outdoor matte powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] S1: Add 15 parts of sodium silicate solution into the reaction kettle, raise the temperature to 80°C, add 98% hydrochloric acid solution dropwise while stirring, adjust the pH value of the reaction system between 8.3, and the dropping rate is 1 drop / seconds, after the dropwise addition, continue the insulation reaction for 1h;

[0025] S2: Add 10 parts of talcum powder to step S1, and continue to insulate and stir the reaction for 30 minutes at a rate of 800r / min; filter and wash to obtain mixture A; add 30 parts of epoxy resin to the reaction kettle, heat up to 120°C, and stir Add 9 parts of mixture A, continue the reaction for 1 hour, and obtain the matting agent after washing, filtering, drying and crushing;

[0026] S3: Add 3 parts of cyclohexane-1,2-dicarboxylic acid diglycidyl ester to 10 parts of the matting agent described in step S2, and continue to react at a temperature of 80°C for 30 minutes; then add 30 parts of epoxy resin, 3 parts of Butyl acrylate, 5 p...

Embodiment 2

[0029] S1: Add 30 parts of sodium silicate solution into the reaction kettle, raise the temperature to 90°C, add 98% hydrochloric acid solution dropwise while stirring, adjust the pH value of the reaction system between 8.7, and the dropping rate is 3 drops / seconds, after the dropwise addition, continue the insulation reaction for 2h;

[0030] S2: Add 20 parts of talcum powder to step S1, and continue to insulate and stir the reaction for 50 minutes at a rate of 1000r / min; filter and wash to obtain mixture A; add 40 parts of epoxy resin to the reaction kettle, heat up to 140°C, and stir Add 15 parts of mixture A, continue to react for 2 hours, and obtain a matting agent after washing, filtering, drying and crushing;

[0031] S3: Add 5 parts of cyclohexane-1,2-dicarboxylic acid diglycidyl ester to 15 parts of the matting agent described in step S2, and continue to react at a temperature of 90°C for 50 minutes; then add 50 parts of epoxy resin, 8 parts of Butyl acrylate, 10 pa...

Embodiment 3

[0034] S1: Add 25 parts of sodium silicate solution into the reaction kettle, raise the temperature to 85°C, add 98% hydrochloric acid solution dropwise while stirring, adjust the pH value of the reaction system between 8.5, and the dropping rate is 2 drops / seconds, after the dropwise addition, continue the insulation reaction for 1.5h;

[0035] S2: Add 15 parts of talcum powder to step S1, and continue to insulate and stir the reaction for 45 minutes at a rate of 900r / min; filter and wash to obtain mixture A; add 35 parts of epoxy resin to the reaction kettle, heat up to 130°C, and stir Add 12 parts of mixture A, continue the reaction for 1.5h, and obtain the matting agent after washing, filtering, drying and crushing;

[0036]S3: Add 4 parts of cyclohexane-1,2-dicarboxylic acid diglycidyl ester to 12 parts of the matting agent described in step S2, and continue the reaction at a temperature of 85°C for 40 minutes; then add 40 parts of epoxy resin, 6 parts Butyl acrylate, 7...

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Abstract

The invention provides a high-performance outdoor matte powder coating which comprises the following components in parts by weight: 30-50 parts of epoxy resin, 3-8 parts of butyl acrylate, 5-10 parts of polyethylene glycol dimethyl ether, 1-4 parts of an anhydride curing agent, 10-15 parts of a delustering agent, 7-12 parts of polyvinyl alcohol, 0.5-1.5 parts of a hindered phenol antioxidant, 1-3 parts of wollastonite, 3-5 parts of diglycidyl 1,2-cyclohexanedicarboxylate, wherein the epoxy resin is bisphenol A epoxy resin, and the delustering agent is prepared by modifying talcum powder, silicon dioxide and epoxy resin, and has a particle size of 5-10 microns. The powder coating not only has a good matting effect, but also has good aging resistance, corrosion resistance and the like.

Description

technical field [0001] The invention relates to the technical field of powder material preparation, in particular to a high-performance outdoor matt powder coating and a preparation method thereof. Background technique [0002] Powder coating is a completely different form from general coatings, and it exists in the state of fine powder. Because no solvent is used, it is called powder coating. Powder coating has the characteristics of solvent-free, pollution-free, recyclable, environmental protection, energy and resource saving, labor intensity reduction and high mechanical strength of the coating film. [0003] Matting powder coatings usually add a matting agent with a matting effect to the powder coating formula. Known matting agent materials can be divided into inorganic compounds and organic compounds. The inorganic compounds include silicon oxide, aluminum oxide, calcium carbonate, barium sulfate, titanium dioxide, etc.; the organic compounds include polycarbonate (PC...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06C09D5/03C09D7/42C09D5/08C09D7/63C09D7/65
CPCC09D4/06C09D5/032C09D5/033C09D5/08
Inventor 李红
Owner 宁波爱甬新材料科技有限公司
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