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Sunscreen paint for dyeing wood and coating method thereof

A wood and primer technology, applied in the direction of coatings, primers, epoxy resin coatings, etc., can solve the problems of discoloration, limited yellowing resistance, and fading of dyed veneer, so as to improve adhesion, reduce damage, and improve durability. The effect of performance

Active Publication Date: 2022-05-27
浙江玛格仕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

However, the yellowing resistance of current coating products is limited, and UV light still easily passes through the clear coat, causing fading or discoloration of the stained wood veneer

Method used

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  • Sunscreen paint for dyeing wood and coating method thereof
  • Sunscreen paint for dyeing wood and coating method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0052] Preparation Example 1, an aminosilane oligomer, prepared according to the following method:

[0053] Step 1: Mix 1000g of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane (aminosilane coupling agent) with 200g of ethanol, stir evenly, heat up to 50°C, and then dropwise add 50g of water , a mixed solution of 200g ethanol solvent, 30g hydroxy silicone oil and 1.5g emulsifier, and continue to stir and mix for 30min to obtain a hydrolyzed solution of aminosilane coupling agent;

[0054]Step 2: Heat the hydrolyzed solution obtained in step 1 to 100°C to carry out the polymerization reaction, carry out vacuum distillation after 2 hours, and recover the methanol solvent to obtain a prepolymer; heat the prepolymer to 120°C, continue to polymerize for 3 hours, and cool down. Discharge at 25°C to obtain aminosilane oligomer; after testing, the average degree of polymerization of this aminosilane oligomer is 9;

[0055] The hydroxy silicone oil in the above step 1 has a molecular w...

preparation example 2

[0056] Preparation example 2, a kind of aminosilane oligomer, is prepared according to the following method:

[0057] Step 1: Mix 1500g of 3-diethylenetriaminopropylmethyldimethoxysilane (aminosilane coupling agent) with 350g of ethanol, stir evenly, raise the temperature to 60°C, and then dropwise add 45g of water and 300g of ethanol solvent , a mixed solution of 65g hydroxy silicone oil and 3g emulsifier, continue to stir and mix for 1h to obtain a hydrolyzed solution of aminosilane coupling agent;

[0058] Step 2: Heat the hydrolyzed solution obtained in step 1 to 95°C to carry out the polymerization reaction. After 2 hours, perform vacuum distillation to recover the methanol solvent to obtain a prepolymer; heat the prepolymer to 130°C, continue to polymerize for 3 hours, and cool down. The material is discharged at 25° C. to obtain an aminosilane oligomer; after testing, the average degree of polymerization of the aminosilane oligomer is 5.

[0059] The hydroxy silicone o...

preparation example 3

[0060] Preparation example 3, a kind of aminosilane oligomer, is prepared according to the following method:

[0061] Step 1: Mix 1000g of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane (aminosilane coupling agent) with 200g of ethanol, stir evenly, raise the temperature to 50°C, and then dropwise add 25g of water , a mixed solution of 160g ethanol solvent, 30g hydroxy silicone oil and 2g emulsifier, and continue to stir and mix for 30min to obtain a hydrolyzed solution of aminosilane coupling agent;

[0062] Step 2: Heat the hydrolyzed solution obtained in step 1 to 95°C to carry out the polymerization reaction. After 2 hours, carry out vacuum distillation to recover the methanol solvent to obtain a prepolymer; heat the prepolymer to 110°C, continue to polymerize for 2 hours, and cool down. Discharge at 25°C to obtain aminosilane oligomer; after testing, the average degree of polymerization of this aminosilane oligomer is 3;

[0063] The hydroxy silicone oil in the above ste...

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Abstract

The invention discloses a sunscreen paint for dyeing wood and a coating method thereof, the sunscreen paint for dyeing wood comprises a primer and a finishing coat, the primer comprises the following components by percentage: 20-35% of methyl isobutyl ketone; 5 to 15 percent of acetone; 10%-20% of ethanol; 10 to 30 percent of ethyl acetate; 3-12% of an ultraviolet light absorber; 5-15% of a light stabilizer; and the finish paint is an anti-yellowing coating. According to the sunscreen paint, on the premise that the appearance performance of the dyed veneer is guaranteed, the light resistance and ultraviolet resistance of the dyed veneer are effectively improved, and the problem of color fading and discoloring of the dyed veneer is solved.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a sunscreen paint for dyed wood and a coating method thereof. Background technique [0002] At present, the popular dyed veneer on the market is bleached and re-dyed from natural wood, so that the defects of the veneer are treated to form a new type of veneer with exquisite appearance. Dyeing not only has the texture of natural veneer, but also makes up for some defects of natural veneer, but dyed veneer is extremely sensitive to light, and it is prone to discoloration under the irradiation of sunlight and indoor energy-saving lamps (mostly LED lamps with long-wave ultraviolet rays). , yellowing, etc. [0003] At present, similar products in the market usually use coatings with better yellowing resistance to coat the wood surface, and rely on the yellowing resistance of the coatings to slow down the discoloration and fading of the veneer. However, current paint products have limited res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00C09D5/32C09D7/20C09D7/63C09D7/65C09D133/00C09D163/00
CPCC09D5/002C09D5/32C09D7/20C09D7/63C09D7/65C09D133/00C09D163/00C08K5/05C08L83/08
Inventor 刘志初
Owner 浙江玛格仕新材料科技有限公司