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Self-cleaning water-based wood topcoat and preparation method thereof

A self-cleaning, water-based technology, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of small application range, poor transparency, low photocatalytic activity, etc., and achieve good applicability and adjustable size , low-cost effect

Inactive Publication Date: 2016-08-17
广州益景春环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prepared self-cleaning coating, the crystallinity of titanium dioxide is low, or it is completely amorphous, and the photocatalytic activity is low.
Therefore, the existing TiO 2 The base self-cleaning coating still has problems such as poor transparency, small application range, high temperature baking or low photocatalytic activity.

Method used

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  • Self-cleaning water-based wood topcoat and preparation method thereof
  • Self-cleaning water-based wood topcoat and preparation method thereof
  • Self-cleaning water-based wood topcoat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of water-based self-cleaning wood topcoat of the present embodiment comprises the raw material of following weight portion:

[0045]

[0046]

[0047] The preparation method is as follows:

[0048] (1) adding water-based silica sol and functional powder to the reactor in sequence for blending to obtain self-cleaning water-based silica sol;

[0049] (2) Water-dispersed polyurethane resin or water-dispersed alkyd resin, functional additives, self-cleaning water-based silica sol and water obtained in step (1) are added to the reactor and blended successively, and are dispersed at high speed and sand-milled for 200 mesh filter screen to obtain the self-cleaning water-based wood finish paint.

[0050] The average particle size of the aqueous silica sol used in this example is 22nm. The average particle size of the nanoscale talcum powder, nanoscale kaolin and nanoscale talc powder used is 6 μm. The prepared water-based self-cleaning wood topcoat has good comp...

Embodiment 2

[0052] A kind of water-based self-cleaning wood topcoat of the present embodiment comprises the raw material of following weight portion:

[0053]

[0054]

[0055] The preparation method is as follows:

[0056] (1) adding water-based silica sol and functional powder to the reactor in sequence for blending to obtain self-cleaning water-based silica sol;

[0057] (2) Water-dispersed polyurethane resin or water-dispersed alkyd resin, functional additives, the self-cleaning water-based silica sol obtained in step (1) and water are added to the reactor successively for blending, and through high-speed dispersion and sand milling, 200 mesh filter screen to obtain the self-cleaning water-based wood finish paint.

[0058] The average particle size of the aqueous silica sol used in this example is 32nm. The average particle size of the nanoscale talcum powder, nanoscale kaolin and nanoscale talc powder used is 5 μm. The prepared water-based self-cleaning wood topcoat has good...

Embodiment 3

[0060] A kind of water-based self-cleaning wood topcoat of the present embodiment comprises the raw material of following weight portion:

[0061]

[0062]

[0063] The preparation method is as follows:

[0064] (1) adding water-based silica sol and functional powder to the reactor in sequence for blending to obtain self-cleaning water-based silica sol;

[0065] (2) Water-dispersed polyurethane resin or water-dispersed alkyd resin, functional additives, the self-cleaning water-based silica sol obtained in step (1) and water are added to the reactor successively for blending, and through high-speed dispersion and sand milling, 200 mesh filter screen to obtain the self-cleaning water-based wood finish paint.

[0066]The average particle size of the aqueous silica sol used in this example is 26 nm. The average particle size of the nanometer talcum powder, nanometer kaolin and nanometer talcum powder used is 3 μm. The prepared water-based self-cleaning wood topcoat has go...

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Abstract

The invention discloses a self-cleaning water-based woodware finish paint and a preparation method thereof. The self-cleaning water-based woodware finish paint comprises the following raw material components in parts by weight: 45-60 parts of water-dispersed polyurethane resin or water-dispersed alkyd resin, 15-25 parts of water-based silica sol, 10-25 parts of functional powder, 2.4-6.5 parts of a functional additive and 0.5-1.5 parts of water, wherein the functional powder comprises the following raw materials in parts by weight: 25-50 parts of nanometer talcum powder, 25-50 parts of nanometer calcium carbonate and 25-50 parts of nanometer kaolin. According to the water-based woodware finish paint, the property that the stability of the water-based silica sol is high is utilized, nanoscale aperture and a continuous three-dimensional network structure are adopted, and a nanometer filling material is added, so that the finally formed film has lower surface energy, the water-based woodware finish paint which can be dried in air and is lower in cost, healthy and safe, is prepared, the defect that the coating can easily shrink when being dried is overcome, and the coating can achieve the characteristics of being self-cleaning, antifouling, hydrophobic, oleophobic and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a self-cleaning water-based wood topcoat and a preparation method thereof. Background technique [0002] Due to its excellent environmental protection characteristics, water-based wood paint greatly reduces the emission of organic solvents to the atmosphere, avoids environmental pollution and physical hazards to construction workers, and has the advantages of convenient use and simple construction. With the continuous improvement of environmental protection requirements in various countries around the world , water-based wood coatings have also begun to replace traditional organic solvent-based coatings and have been widely used. At present, the biggest problems of water-based coatings are the disadvantages of poor water resistance, slow drying speed of the coating film, and low hardness. [0003] Because the self-cleaning surface has many unique surface properties: such as ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D167/08C09D7/12
CPCC08K2201/003C08K2201/011C08L2205/02C08L2205/035C09D7/61C09D167/08C09D175/04C08L75/04C08L83/04C08K13/02C08K3/34C08K3/346C08K2003/265C08K3/36
Inventor 刘勇邓建华
Owner 广州益景春环保材料科技有限公司
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