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Water-based two-component wood lacquer and preparation method thereof

A water-based two-component, wood lacquer technology, applied in the field of wood lacquer, can solve the problems of poor water resistance, poor low-temperature film-forming performance, low hardness, etc., and achieve the effect of improving mechanical properties, good pollution resistance, and high hardness

Active Publication Date: 2020-12-11
FOSHAN HAITE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing water-based two-component wood paints are mainly based on acrylic esters, which have the disadvantages of poor low-temperature film-forming performance, low hardness, and poor water resistance.
[0004] It can be seen that the existing two-component water-based wood paints are difficult to achieve the characteristics of good low-temperature film-forming properties, high hardness, good pollution resistance, water resistance, and good boiling water resistance while controlling low cost.

Method used

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  • Water-based two-component wood lacquer and preparation method thereof
  • Water-based two-component wood lacquer and preparation method thereof
  • Water-based two-component wood lacquer and preparation method thereof

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preparation example Construction

[0053] Correspondingly, the present invention also discloses a preparation method of the above-mentioned water-based two-component wood lacquer, which comprises the following steps:

[0054] (1) Put 20-25 parts of water and 1.2-2.5 parts of emulsifier in an emulsification tank, stir rapidly for 10-15 minutes, then add soft monomer, hard monomer, fluorine-containing functional monomer, methacrylic acid, methyl Hydroxyethyl acrylate, cross-linking monomer and dodecyl mercaptan, high-speed emulsification for 20-30 minutes to obtain a pre-emulsion;

[0055] (2) Put the remaining water and emulsifier into the reaction tank, heat up to 80-90°C while stirring, initially add 5-6% of the pre-emulsion, stir for 1-5min, then add 0.04-0.05 parts of initiator, stir React for 25 to 35 minutes. When the emulsion in the reaction tank is blue and transparent, add the remaining pre-emulsion and the remaining initiator dropwise at the same time. The dropping time is controlled within 4-5 hours,...

Embodiment 1

[0062] The present embodiment provides a kind of water-based two-component wood lacquer, and it comprises matrix emulsion and curing agent, matrix emulsion: curing agent=100:14, and curing agent selects toluene diisocyanate for use;

[0063] The formulation of the base emulsion is as follows:

[0064]

[0065] Among them, the soft monomer is isooctyl acrylate, the hard monomer is methyl methacrylate, the crosslinking monomer is glycidyl methacrylate, the fluorine-containing functional monomer is hexafluoroisopropyl methacrylate, and the emulsifier is Nonylphenol polyoxyethylene ether is selected, and potassium persulfate is selected as the initiator.

[0066] Its preparation method is as follows:

[0067] (1) Put 25 parts of water and 1.3 parts of emulsifier in an emulsification tank, stir rapidly for 15 minutes, then add soft monomer, hard monomer, fluorine-containing functional monomer, methacrylic acid, hydroxyethyl methacrylate and Cross-linking monomers, high-speed e...

Embodiment 2

[0071] The present embodiment provides a water-based two-component wood paint, which includes a base emulsion and a curing agent, the base emulsion: curing agent=100:15, and the curing agent is selected from hexamethylene diisocyanate;

[0072] The formulation of the base emulsion is as follows:

[0073]

[0074] Among them, butyl acrylate is selected as the soft monomer, methyl methacrylate is selected as the hard monomer, octadecyl methacrylate is selected as the cross-linking monomer, tetrafluoropropanol methacrylate is selected as the fluorine-containing functional monomer, and tetrafluoropropanol methacrylate is selected as the emulsifier A mixture of ER-20 and sodium lauryl sulfate, and ER-20: sodium lauryl sulfate = 1:1, the initiator is ammonium persulfate.

[0075] Its preparation method is as follows:

[0076] (1) Put 23 parts of water and 2 parts of emulsifier in an emulsification tank, stir rapidly for 15 minutes, then add soft monomer, hard monomer, fluorine-c...

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Abstract

The invention discloses a water-based two-component wood lacquer, which comprises a matrix emulsion and a curing agent in a weight ratio of 100:(10-15), wherein the matrix component is mainly preparedfrom the following raw materials: a soft monomer, a hard monomer, a cross-linking monomer, a fluorine-containing functional monomer, methacrylic acid, hydroxyethyl methacrylate, an emulsifier, an initiator and water, wherein the glass-transition temperature of the soft monomer is less than or equal to 20 DEG C, and the glass-transition temperature of the hard monomer is more than or equal to 100DEG C. Correspondingly, the invention further discloses a preparation method of the water-based two-component wood lacquer. The wood lacquer disclosed by the invention has the characteristics of low cost and good film-forming property, and a formed coating film has the advantages of high hardness, good pollution resistance, good water resistance and good boiling water resistance.

Description

technical field [0001] The invention relates to the technical field of wood lacquer, in particular to a water-based two-component wood varnish and a preparation method thereof. Background technique [0002] There are two main types of common water-based wood coatings: acrylic water-based paint and polyurethane water-based paint. Polyurethane water-based paint has good low-temperature film-forming properties, high-temperature back-adhesion resistance, high strength, and high wear resistance, but its cost is high and it is not suitable for large-scale applications; acrylic wood paints have good weather resistance and gloss. At the same time, it has a wide range of sources and low cost, but it is prone to thermal stickiness and cold brittleness, poor low-temperature film-forming performance, poor high-temperature resistance, poor chemical corrosion resistance, low hardness, and low strength. A common method is to modify the acrylate emulsion and add other resins or modifiers t...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C08G18/62C08F220/14C08F220/18C08F220/32C08F220/24C08F220/06C08F220/20
CPCC08F220/14C08G18/6229C09D5/1662C09D175/04C08F220/1808C08F220/325C08F220/24C08F220/06C08F220/20C08F220/1804C08F220/1818
Inventor 郑伟洲陈保平
Owner FOSHAN HAITE CHEM TECH
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