Waterborne wood coating with zero VOC volatilization and preparation method of waterborne wood coating

A wood coating, water-based technology, applied in fireproof coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of reduced cold and heat resistance, complicated preparation process, high input cost, etc., to reduce surface tension and adhesion Good, good film-forming effect

Active Publication Date: 2016-12-21
董武齐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the production and use of solvent-based wood coatings, a large amount of organic solvents volatilize into the atmosphere, causing pollution to the environment and poisoning to the body of production personnel. At the same time, due to the existence of flammable organic solvents in the production and construction process, fire prevention is required throughout the process. Now There are water-based wood coatings made of propionate emulsions, acrylates and polyurethanes, and the content of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of a water-based wood coating with zero VOC volatilization comprises the following steps:

[0048] Step 1: Stir 63.42 parts by weight of pure water and 0.02 parts of preservative at a speed of 250-320 rpm, then slowly add 5 parts of starch, and heat up while stirring, so that the temperature reaches 90°C , continue to stir for 4-6 minutes, cool to room temperature, then add 1.5 parts of emulsifier and stir for 5 minutes, then add 30 parts of castor oil and stir for 15 minutes at a speed of 2000 rpm, then reduce the speed to 500 rpm and add 0.01 part of water-based defoamer and 0.05 part of water-based catalyst, stirred for 10-20 minutes, filtered to obtain component A.

[0049] Step 2: Prepare component A, component B and purified water in parts by weight of 1:0.4:0.5 to obtain a water-based wood coating with zero VOC volatilization.

Embodiment 2

[0051] A preparation method of a water-based wood coating with zero VOC volatilization comprises the following steps:

[0052] Step 1: Stir 64.52 parts by weight of pure water and 0.02 parts of preservative at a speed of 250-320 rpm, then slowly add 6 parts of starch, and heat up while stirring, so that the temperature reaches 90°C , continue to stir for 4-6 minutes, cool to room temperature, add 1.4 parts of emulsifier and stir for 5 minutes, then add 28 parts of castor oil and stir for 15 minutes at a speed of 2000 rpm, then reduce the speed to 500 rpm and add 0.01 part of water-based defoamer and 0.05 part of water-based catalyst, stirred for 10-20 minutes, filtered to obtain component A.

[0053] Step 2: Prepare component A, component B and purified water in parts by weight of 1:0.4:0.5 to obtain a water-based wood coating with zero VOC volatilization.

Embodiment 3

[0055] A preparation method of a water-based wood coating with zero VOC volatilization comprises the following steps:

[0056] Step 1: Stir 65.62 parts by weight of pure water and 0.02 parts of preservative at a speed of 250-320 rpm, then slowly add 7 parts of starch, and heat up while stirring, so that the temperature reaches 90°C , continue to stir for 4-6 minutes, cool to room temperature, add 1.3 parts of emulsifier and stir for 5 minutes, then add 26 parts of castor oil and stir for 15 minutes at a speed of 2000 rpm, then reduce the speed to 500 rpm and add 0.01 part of water-based defoamer and 0.05 part of water-based catalyst, stirred for 10-20 minutes, filtered to obtain component A.

[0057] Step 2: Prepare component A, component B and purified water in parts by weight of 1:0.4:0.5 to obtain a water-based wood coating with zero VOC volatilization.

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PUM

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Abstract

The invention relates to the technical field of waterborne coatings, in particular to a waterborne wood coating with zero VOC volatilization and a preparation method of the waterborne wood coating. The waterborne wood coating comprises a component A, a component B and water, wherein the component A comprises the following raw materials in parts by weight: starch, castor oil, emulsifiers, a preservative, a water-based defoamer, an aqueous catalyst and purified water, and the component B is water dispersible type modified polyisocyanate; the ratio in parts by weight of the component A to the component B to water is 1: (0.3-1): (0.3-1). The waterborne wood coating with the zero VOC volatilization disclosed by the invention takes the castor oil and starch as raw materials, thereby being natural and environment-friendly, free of toxicity and having good cold resistance, heat resistance, dryness resistance and humidity resistance, excellent adhesion and high impact resistance; furthermore, the method is low in input equipment cost, simple and convenient in process and easy to operate.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a zero-VOC volatilization water-based wood coating and a preparation method thereof. Background technique [0002] During the production and use of solvent-based wood coatings, a large amount of organic solvents volatilize into the atmosphere, causing pollution to the environment and poisoning to the body of production personnel. At the same time, due to the existence of flammable organic solvents in the production and construction process, fire prevention is required throughout the process. Now There are water-based wood coatings made of propionate emulsions, acrylates and polyurethanes, and the content of organic volatile agents is reduced to 5%-30%. Although this greatly reduces the content of organic solvents, there is still a problem for users. At the same time, due to the reduction of organic solvents, the performance of cold and heat resistance is reduced, and...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D175/08C09D7/12
CPCC08L2201/08C09D5/18C09D175/08C09D175/14C08L91/00C08L83/04C08L71/00C08K5/5406C08K5/5415
Inventor 董武齐
Owner 董武齐
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