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Method for preparing antibacterial, mildew-proof, wear-resisting and flame-retarding coating for wood craft products by adding modified nano oxide

A nano-oxide, antibacterial and anti-mildew technology, applied in fire-retardant coatings, antifouling/underwater coatings, polyurea/polyurethane coatings, etc., can solve the problems of poor flame retardant efficiency, affecting the physical and chemical properties of coatings, and high flame retardant costs. To achieve the effect of improving the dispersion effect, excellent antibacterial and antifungal properties, and smooth surface

Inactive Publication Date: 2018-10-26
安徽阜南县万家和工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The water-based polyurethane coating system contains almost no organic solvents, and has a series of advantages such as non-toxic, environmental protection, convenient use, wear resistance, high elasticity, high strength, etc. Its output and demand are increasing sharply, but its flammability is fatal. Weaknesses limit its application in many fields
The existing problems of flame retardant waterborne polyurethane coatings mainly include: poor flame retardant efficiency; high flame retardant cost; compound flame retardants significantly affect the physical and chemical properties of coatings

Method used

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  • Method for preparing antibacterial, mildew-proof, wear-resisting and flame-retarding coating for wood craft products by adding modified nano oxide

Examples

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Embodiment 1

[0025] A method for adding modified nano-oxides to prepare an antibacterial, mildew-proof, wear-resistant and flame-retardant coating for wooden handicrafts, comprising the following steps:

[0026] (1) Modification of antibacterial and antifungal nano zinc oxide:

[0027] Add 0.1 part of coupling agent to the zinc oxide-ethanol dispersion, stir mechanically for 10 minutes to mix, then ultrasonically treat at 40-50°C for 1h, heat up to 75-85°C for 2h, wash with ethanol twice, and vacuum filter Dry in a blast drying oven at 75-85°C for 20 hours, and grind through a 300-mesh sieve to obtain modified nano-zinc oxide powder;

[0028] (2) Preparation of wear-resistant nano-zirconia slurry with surface modifier:

[0029] Add distilled water to 2 parts of surface modifier at 1:80, stir to dissolve evenly, add 1 part of nano-zirconia under stirring condition, adjust the speed of sand mill and grind for 2 hours, add 0.1 part of protective agent, continue grinding for 20 minutes, and t...

Embodiment 2

[0037] A method for adding modified nano-oxides to prepare an antibacterial, mildew-proof, wear-resistant and flame-retardant coating for wooden handicrafts, comprising the following steps:

[0038] (1) Modification of antibacterial and antifungal nano zinc oxide:

[0039] Add 0.2 parts of coupling agent to the zinc oxide-ethanol dispersion, stir mechanically for 15 minutes to mix, then ultrasonically treat at 40-50°C for 2 hours, heat up to 75-85°C for 3 hours, wash with ethanol for 3 times, and vacuum filter Dry in a blast oven at 75-85°C for 25 hours, grind through a 300-mesh sieve, and obtain modified nano-zinc oxide powder;

[0040] (2) Preparation of wear-resistant nano-zirconia slurry with surface modifier:

[0041] Add distilled water to 2.5 parts of surface modifier at a ratio of 1:100, stir to dissolve evenly, add 1.5 parts of nano-zirconia under stirring conditions, adjust the speed of the sand mill and grind for 3 hours, add 0.2 parts of protective agent, continue...

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Abstract

The invention discloses a method for preparing antibacterial, mildew-proof, wear-resisting and flame-retarding coating for wood craft products by adding modified nano oxide. The method comprises the following steps: adding nano silicon dioxide sol, a nanocellulose solution, modified nano zinc oxide powder and modified nano zirconium oxide slurry into waterborne polyurethane emulsion and stirring by utilizing an electric stirrer so as to obtain the waterborne coating. The waterborne polyurethane emulsion is modified through the nano silicon dioxide sol, and the waterborne polyurethane emulsionand the nano silicon dioxide sol have good compatibility; a system is stable and the water resistance of the modified coating is easy to improve by utilizing the nano silicon dioxide; meanwhile, the flame-retarding performance of the coating can be improved; the thermal stability of the coating is effectively improved through the nano silicon dioxide sol. The nanocellulose is used as an enhancingbody; the antibacterial and mildew-proof modified nano zinc oxide, the wear-resisting surface modified zirconium oxide slurry and the nano silicon dioxide sol are added, and the modified polyurethanecoating is prepared by adopting a physical blending method; the prepared nano oxide modified waterborne polyurethane coating has excellent wear resistance and hardness and has good antibacterial and mildew-proof performance and flame-retarding performance.

Description

technical field [0001] The invention belongs to the technical field of wood handicraft treatment technology, and in particular relates to a method for preparing an antibacterial, mildew-proof, wear-resistant and flame-retardant coating for wood handicrafts by adding modified nano-oxides. 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] In recent years, with the intensification of environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/14C09D5/18C09D7/62C09D7/61C09D7/65
CPCC08K2003/2244C08K2003/2296C08K2201/011C08L2201/02C09D5/14C09D5/18C09D7/61C09D7/62C09D7/65C09D175/04C08L1/04C08K9/06C08K3/22C08K9/04C08K9/08C08K3/36
Inventor 徐治合徐蓝天徐艳云
Owner 安徽阜南县万家和工艺品有限公司
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