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A kind of preparation method of nano-titanium dioxide-based wood preservative

A nano-titanium dioxide, wood preservative technology, applied in wood treatment, wood impregnation, wood impregnation and other directions, can solve the problems of large specific surface area, easy to agglomerate, affecting the application effect, etc. small effect

Inactive Publication Date: 2019-05-03
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But nano TiO 2 The specific surface area of ​​the particles is large, and they are easily agglomerated under the action of van der Waals force in the liquid medium, thus forming larger aggregates, which will seriously affect its practical application effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The nano-titanium dioxide-based wood preservative of the present embodiment has the following steps to prepare:

[0021] (1) Add nano-titanium dioxide and DMF into the reaction vessel, add titanate NDZ-105, adjust the value to 7.5, stir magnetically for 40 minutes, add isophorone diisocyanate, transfer to a water bath at 85°C, and stir magnetically at constant temperature React for 8 hours, lower the temperature to room temperature, filter, wash with dichloromethane for 3 times, and dry in a vacuum oven at 40°C to obtain modified nano-titanium dioxide;

[0022] (2) Mix and stir acrylic acid, methyl methacrylate, and methacrylamide at a mass ratio of 1:4:0.2 to obtain a mixed monomer; mix OP-10, sodium dodecylsulfonate, and deionized water Mix and stir evenly with a mass ratio of 1:1.2:30, then add 2 times the weight of NaHCO 3 , continue to mix and stir evenly to obtain an emulsion;

[0023] (3) Add propylene glycol methyl ether acetate, 1 / 2 of the emulsion and 1 / 5 of...

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PUM

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Abstract

The invention discloses a nano titanium dioxide-based wood preservative. A preparation method is characterized by comprising the steps of modifying nano titanium dioxide, preparing acrylic emulsion, preparing acrylic acid aqueous dispersion, and uniformly mixing the acrylic acid aqueous dispersion with tebuconazole, carbendazim and imidacloprid, thus obtaining the nano titanium dioxide-based woodpreservative. The wood preservative provided by the invention has broad-spectrum bactericidal and insecticidal action, is good in preservative effect, and is relatively low in toxicity and harmless tothe environment and a human body.

Description

technical field [0001] The invention relates to a wood preservative, in particular to a preparation method of a nano-titanium dioxide-based wood preservative. Background technique [0002] Using the small size effect, quantum effect, interface or surface effect of nanomaterials, nano preservatives with multiple properties can be obtained, and new multifunctional wood preservatives that are antibacterial, anti-corrosion, photochromic, and heat-resistant can be prepared. Nano-wood preservatives can become a new generation of wood preservatives due to their excellent properties such as good permeability, loss resistance and controllability of active ingredients, and have also attracted special attention from researchers at home and abroad. [0003] High security nano TiO 2 It has high-efficiency functions such as killing harmful bacteria and degrading organic pollutants. It can not only kill bacteria, but also decompose endotoxins produced after the death of bacteria and fungi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52C08F220/14C08F220/06C08F220/56
CPCB27K3/52B27K2240/20C08F220/14C08F220/06C08F220/56
Inventor 蒋应梯王进庄晓伟潘炘于海霞刘亚群
Owner ZHEJIANG FORESTRY ACAD
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