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Wood preservative preparing method

A wood preservative and nanoparticle technology, used in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of weakening antiseptic and bactericidal performance, reducing reactivity, and increasing particle size, achieving long storage period and improving reactivity. , the effect of improving the service life

Inactive Publication Date: 2018-06-22
贵州省林业科学研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since nanomaterials are easy to aggregate together during use, the particle size increases and the reactivity decreases, which in turn increases the difficulty of entering wood during nano-treatment (the size of open pits in wood is generally 400-600nm), and weakens anti-corrosion and sterilization performance

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of wood preservative of the present invention, comprises the following steps:

[0035] (1) Using n-propyl titanate as precursor, TiO was prepared by sol-gel method 2 sol suspension, while adding an appropriate amount of dilute oxalic acid solution (commercially available) drop by drop, and controlling the pH of the reaction process to be 4 to 5, to obtain TiO-containing 2 The precipitated suspension was then processed in an autoclave with a heating rate of 2.5 °C / min, a temperature of 115 °C, and a time of 60 min to obtain TiO with photocatalytic activity 2 ;

[0036] (2) With propylene glycol as a solvent, the TiO obtained in step (1) 2 Formulated with 1% TiO by mass 2 dispersion suspension;

[0037] (3) Add a certain amount of nano-silver oxide with a size less than 40nm to TiO 2 Disperse the suspension to obtain nano-silver oxide / TiO with a mass percentage of nano-silver oxide of 1%. 2 / propylene glycol mixture;

[0038] (4) Nano s...

Embodiment 2

[0044] A kind of preparation method of wood preservative of the present invention, comprises the following steps:

[0045] (1) Using n-propyl titanate as precursor, TiO was prepared by sol-gel method 2 sol suspension, while adding an appropriate amount of dilute oxalic acid solution (commercially available) drop by drop, and controlling the pH of the reaction process to be 4 to 5, to obtain TiO-containing 2 The precipitated suspension was then processed in an autoclave with a heating rate of 2.5 °C / min, a temperature of 125 °C, and a time of 90 min to obtain TiO with photocatalytic activity 2 ;

[0046] (2) With propylene glycol as a solvent, the TiO obtained in step (1) 2 Formulated with 1% TiO by mass 2 dispersion suspension;

[0047] (3) Add a certain amount of nano zinc oxide with a size less than 50nm to TiO 2 Disperse the suspension to obtain nano-zinc oxide / TiO with a mass percentage of nano-zinc oxide of 3%. 2 / propylene glycol mixture;

[0048] (4) Nano zinc ox...

Embodiment 3

[0053] A kind of preparation method of wood preservative of the present invention, comprises the following steps:

[0054] (1) Using n-propyl titanate as precursor, TiO was prepared by sol-gel method 2 sol suspension, while adding an appropriate amount of dilute oxalic acid solution (commercially available) drop by drop, and controlling the pH of the reaction process to be 4 to 5, to obtain TiO-containing 2 The precipitated suspension was then processed in an autoclave with a heating rate of 2.5 °C / min, a temperature of 135 °C, and a time of 120 min to obtain TiO with photocatalytic activity 2 ;

[0055] (2) With propylene glycol as a solvent, the TiO obtained in step (1) 2 Formulated with 1% TiO by mass 2 dispersion suspension;

[0056] (3) Add a certain amount of nano-copper oxide with a size less than 50nm to TiO 2 Disperse the suspension to obtain nano-copper oxide / TiO with a mass percentage of nano-copper oxide of 5%. 2 / propylene glycol mixture;

[0057] (4) Nano-...

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Abstract

The invention discloses a wood preservative preparing method. The wood preservative preparing method comprises the following steps that firstly, TiO2 suspension liquid is subjected to high-pressure sterilization treatment, and TiO2 with photocatalytic activity is obtained; secondly, propylene glycol serves as a solvent, and TiO2 obtained in the first step is prepared into TiO2 dispersed suspensionliquid with the TiO2 mass percent content being 0.5%-2%; thirdly, nano particles are added in the TiO2 dispersed suspension liquid obtained in the second step, homogenizing is conducted, and a uniform nano particle / TiO2 / propylene glycol mixed solution is obtained; and fourthly, the nano particle / TiO2 / propylene glycol mixed solution is subjected to ultrasonic treatment, and the uniform and stablewood preservative is obtained. The wood preservative obtained through the preparing method is very good in dispersibility, very high in stability and long in storage period and has wide popularizationand application value.

Description

technical field [0001] The invention belongs to the field of wood preservatives, in particular to a method for preparing a photocatalyzed titanium dioxide-enhanced nano preservative for wood. Background technique [0002] Wood is a natural and renewable biological material, but it is easily attacked by microorganisms such as decay fungi, insects, and molds, which seriously affects its use. Therefore, wood must be treated with antiseptic treatment. Studies have shown that the service life of anti-corrosion treated wood is 5-6 times that of untreated wood. Preservatives commonly used at home and abroad mainly include copper amine (ammonia) quaternary ammonium salt (ACQ), copper azole (CA), copper chromium arsenic (CCA) and boron preservatives, etc., but because these preservatives contain toxic substances , Easy to lose and other defects during use, causing great harm to the human body and serious pollution to the environment. [0003] In recent years, nanomaterials have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/00B27K3/52
CPCB27K3/007B27K3/52B27K2240/20
Inventor 杨守禄姬宁黄安香李丹张永权龙险峰张原张彦雄肖高寿陈庆张翔吴义强卿彦李新功李贤军罗莎胡云楚
Owner 贵州省林业科学研究院
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