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Method for modifying environment-friendly wood lacquer by using nanometer zinc oxide-polyethylene wax microcapsules

A technology of nano-zinc oxide and polyethylene wax, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of low hardness, poor wear resistance, poor water resistance, etc., and achieve smooth surface, improved wear resistance and water resistance , improve the sealing effect

Inactive Publication Date: 2020-02-28
ANHUI XINDA HOME FURNISHING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in existing wood paints, such as poor water resistance, low hardness, and poor wear resistance.

Method used

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  • Method for modifying environment-friendly wood lacquer by using nanometer zinc oxide-polyethylene wax microcapsules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for modifying environment-friendly wood lacquer with nanometer zinc oxide-polyethylene wax microcapsules, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0024] (1) Use citric acid monohydrate to modify the surface of nano-zinc oxide:

[0025] Add deionized water / ethanol solution to 1 part of nano-zinc oxide at 1:100, and ultrasonically obtain nano-zinc oxide suspension; dissolve 0.1 part of citric acid monohydrate in 100 parts of deionized water / ethanol solution, and use Adjust the pH of the solution to 7-8, add dropwise to the nano-zinc oxide suspension, stir magnetically in an oil bath at 35-40°C for 1 hour, wash with ethanol three times, centrifuge for 15 minutes, and dry in vacuum at 60-65°C for 20 hours. Obtain surface-modified nano zinc oxide;

[0026] Wherein, the deionized water / ethanol volume ratio of deionized water / ethanol solution is 8:2;

[0027] (2) Preparation of calc...

Embodiment 2

[0035] A method for modifying environment-friendly wood lacquer with nanometer zinc oxide-polyethylene wax microcapsules, characterized in that it comprises the following steps, and the following raw materials are calculated in parts by weight:

[0036] (1) Use citric acid monohydrate to modify the surface of nano-zinc oxide:

[0037] Add deionized water / ethanol solution to 2 parts of nano-zinc oxide at 1:100, and ultrasonically obtain a nano-zinc oxide suspension; dissolve 0.2 parts of citric acid monohydrate in 100 parts of deionized water / ethanol solution, and use sodium hydroxide Adjust the pH of the solution to 7-8, add dropwise to the nano-zinc oxide suspension, stir magnetically in an oil bath at 35-40°C for 2 hours, wash with ethanol for 5 times, centrifuge for 20 minutes, and dry in vacuum at 60-65°C for 24 hours. Obtain surface-modified nano zinc oxide;

[0038] Wherein, the deionized water / ethanol volume ratio of deionized water / ethanol solution is 8:2;

[0039] (...

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Abstract

The invention discloses a method for modifying environment-friendly wood lacquer by using nanometer zinc oxide-polyethylene wax microcapsules. The method comprises the following steps: adding an acetone solution of cellulose acetate into ae polyurethane prepolymer for a reaction; then adding a small-molecular chain extender, namely butanediol; carrying out a modification reaction, and performing cooling; adding anhydrous triethylamine, carrying out a neutralization reaction, then adding deionized water, and carrying out high-speed shearing stirring emulsification; and evaporating acetone, adding an aziridine cross-linking agent, nanometer zirconia slurry, surface-modified nanometer zinc oxide and calcium carbonate-coated polyethylene wax microcapsules, and carrying out uniform mixing to prepare the modified environment-friendly wood lacquer. According to the invention, polyethylene wax is coated with calcium carbonate to prepare a microcapsule material with anti-friction and anti-wearfunctions, and the wood lacquer shows a hydrophobic characteristic due to addition of the microcapsules; the hydrophobic additive, namely a polyethylene wax emulsion can further improve the hydrophobic property of a wood lacquer film and enhance the isolation effect of the film on moisture; and due to the fact that the microcapsules are broken under the action of friction shearing in the frictionprocess, a lubricating additive is released, so the friction coefficient and the abrasion resistance of the wood lacquer of the microcapsules are excellent.

Description

technical field [0001] The invention belongs to the field of environment-friendly paints, and in particular relates to a method for modifying environment-friendly wood paints with nanometer zinc oxide-polyethylene wax microcapsules. Background technique [0002] With the increasing awareness of global environmental protection, environmental protection laws and policies at home and abroad are becoming increasingly strict. The domestic paint industry is also facing increasing pressure on environmental protection. With the promulgation of the national environmental protection law and the collection of paint consumption tax, the coatings are forced to change to environmental protection. The furniture industry is gradually replacing solvent-based paints with environmentally-friendly paints. Research and development will become the focus of future development. [0003] Solvent-based polyurethane wood paint is replaced by water-based polyurethane wood paint due to its high volatil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/62C09D7/65
CPCC08K2003/2244C08K2003/2296C08K2003/265C08K2201/011C08L2205/14C09D175/04C09D7/62C09D7/65C09D7/70C08L23/06C08L1/12C08K13/06C08K9/04C08K3/22C08K9/08C08K5/3412C08K3/26
Inventor 李明李东猛
Owner ANHUI XINDA HOME FURNISHING CO LTD
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