A preparation method of superhydrophobic self-cleaning wood

A self-cleaning, super-hydrophobic technology, applied in wood treatment, wood impregnation, impregnated wood, etc., can solve the problems of poor bonding strength between resin coating and wood, poor mechanical properties, lack of self-cleaning function, etc., and achieve dimensional stability Good, strong anti-corrosion performance, good mechanical properties

Active Publication Date: 2021-12-24
泗洪新创源木业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the existing problems of using POSS hybridized fluorine-containing acrylic resin to construct wood superhydrophobic surface, the existing problems of poor bonding strength between resin coating and wood, poor mechanical properties, and lack of self-cleaning function, and provides a superhydrophobic surface Preparation method of hydrophobic self-cleaning wood

Method used

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  • A preparation method of superhydrophobic self-cleaning wood
  • A preparation method of superhydrophobic self-cleaning wood
  • A preparation method of superhydrophobic self-cleaning wood

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specific Embodiment approach 1

[0034] Specific embodiment one: the preparation method of superhydrophobic self-cleaning characteristic wood of this embodiment comprises the following steps:

[0035] Step 1: Weigh 49-99 parts of fluorine-containing polymerizable monomers, 0-30 parts of unsaturated monomers, 0.5-10 parts of POSS nanoparticles, and 0.1-10 parts of amino-modified MXene and 0.4 to 1 part of initiator, first mix POSS nanoparticles and amino-modified MXene into tetrahydrofuran, stir to dissolve, then add fluorine-containing polymerizable monomer, unsaturated monomer and initiator, and mix evenly to obtain Impregnation solution; wherein the mass ratio of tetrahydrofuran to fluorine-containing polymerizable monomer is 1:1;

[0036] Step 2: Add wood and impregnating solution into the reaction tank, and immerse the wood in the impregnating solution. After sealing the reaction tank, feed nitrogen gas to make the pressure in the reaction tank reach 0.8MPa~1MPa, and keep it for 20min~30min ;

[0037] S...

specific Embodiment approach 2

[0043] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the fluorine-containing polymerizable monomer described in step 1 is hexafluorobutyl acrylate, hexafluorobutyl methacrylate, trifluorooctyl acrylate, Trifluorooctyl methacrylate or dodecafluoroheptyl methacrylate. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0044] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the unsaturated monomer described in step one is acrylic acid, methacrylic acid, alkyl acrylate, alkyl methacrylate, glycidyl acrylate , glycidyl methacrylate, allyl glycidyl ether, α-hydroxyalkyl acrylate, α-hydroxyalkyl methacrylate, aminoalkyl acrylate, aminoalkyl methacrylate, multiple Alcohol diacrylate, polyol dimethacrylate or a combination of several of them. Others are the same as in the first embodiment.

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Abstract

A method for preparing wood with superhydrophobic self-cleaning properties relates to a wood modification method. It is to solve the existing method of using POSS hybrid fluorine-containing acrylic resin to construct wood superhydrophobic surface, the existing problems of poor bonding strength between resin coating and wood, poor mechanical properties, and lack of self-cleaning function. This method: mix fluorine-containing polymerizable monomers, unsaturated monomers, POSS nanoparticles, amino-modified MXene, solvents and initiators to obtain impregnating liquid; then add wood and impregnating liquid into the reaction tank, and pressurize The impregnation solution is injected into the pore structure of the wood, and then the specimen is wrapped and aged at room temperature and pressure, then heat-treated, and vacuum-dried to obtain super-hydrophobic self-cleaning wood. The method does not change the color of the wood, has no peculiar smell, has high compressive strength along the grain, and has an anti-expansion rate of more than 65% after continuous immersion in water for 200 hours; has antibacterial and superhydrophobic self-cleaning functions, and can be widely used as indoor and outdoor structural materials and decorative materials.

Description

technical field [0001] The invention relates to a wood modification method, in particular to a preparation method of superhydrophobic self-cleaning wood. Background technique [0002] Because of its unique composition and honeycomb porous structure, wood is prone to swelling and deformation caused by water absorption, cracking and warping caused by water decomposition, and decay and degradation caused by fungus and insect erosion. In order to prolong the service life of wood and improve its durability, people modify natural wood. [0003] The patent application No. 201310378783.2 discloses the method of using POSS hybrid fluorine-containing acrylic resin to construct a coating, but it does not have bactericidal self-cleaning properties (no antibacterial components), and there is no chemical reaction between soft and hard monomers and wood. Hydrogen bonding, so the bonding strength between resin and wood is not good, and the mechanical properties are poor. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K5/04B27K3/50C08F283/12C08F220/24
CPCB27K3/08B27K5/04B27K3/50C08F283/12B27K2240/70B27K2240/20C08F220/24
Inventor 李苍海李永峰
Owner 泗洪新创源木业有限公司
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