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Preparation method of wood superhydrophobic bactericidal and anti-mildew functional modifier and wood modification method

A modifier and super-hydrophobic technology, applied in wood impregnation, wood treatment, impregnated wood, etc., can solve the problems of high toxicity, short storage time, poor loss resistance, etc., and achieve improved antiseptic and bactericidal performance, simple operation, and loss resistance sex enhancing effect

Active Publication Date: 2021-02-26
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of high toxicity of existing wood modifiers, short storage time at room temperature, and poor loss resistance, and provides a method for preparing a wood superhydrophobic bactericidal and anti-mildew function modifier and a wood modification method

Method used

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  • Preparation method of wood superhydrophobic bactericidal and anti-mildew functional modifier and wood modification method
  • Preparation method of wood superhydrophobic bactericidal and anti-mildew functional modifier and wood modification method
  • Preparation method of wood superhydrophobic bactericidal and anti-mildew functional modifier and wood modification method

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specific Embodiment approach 1

[0038] Specific embodiment one: the preparation method of wood superhydrophobic bactericidal and anti-mildew function modifier of the present embodiment, comprises the following steps:

[0039] 1. Weigh 1%-50% of hydrophobic polymer resin, 0.5%-5% of functional additives, 0.1%-1% of surfactant and the rest of the solvent according to mass percentage, and mix them at room temperature Stir for 0.1-1 hour to obtain functional reagent A;

[0040] 2. Weigh 0.1%-5% of nanoparticles, 0.1%-2% of modifier and the rest of toluene according to mass percentage, mix and stir for 72-76 hours, then wash with acetone, and then centrifuge at 8000-9000rpm 3-5 times, then dry at 78-82°C for 12-14 hours to obtain functional reagent B;

[0041] 3. Add functional reagent B to functional reagent A. The mass of functional reagent B is 0.1%-1% of the mass of functional reagent A. Ultrasound for at least 30 minutes to obtain the wood modifier.

specific Embodiment approach 2

[0042] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the hydrophobic polymer resin is a fluorocarbon resin with less than 8 F atoms. Others are the same as in the first embodiment.

[0043] In this embodiment, the fluorocarbon resin is purchased from Shangmeng Technology Wuxi Co., Ltd., which meets the environmental protection standards of Europe, Japan and the United States.

specific Embodiment approach 3

[0044]Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, the functional auxiliary agent is a mixture composed of iodopropynyl butyl carbamate (IPBC) and benzimidazole in any proportion . Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a wood super-hydrophobic sterilization mildew-proof functional modifier and a wood modification method. The invention relates to the preparation methodof the wood modifier and the wood modification method, and mainly aims at solving the problems that an existing wood modifier is high in toxicity, short in storage time at room temperature and poor inloss resistance. The preparation method comprises the following steps: (1) weighing hydrophobic polymer resin, a functional additive, a surfactant and a solvent, and carrying out mixing by stirring to obtain a functional reagent A; (2) weighing nano-particles, polydimethylsiloxane and toluene, carrying out stirring after mixing, and carrying out cleaning, centrifuging and drying to obtain a functional reagent B; and (3) adding the functional reagent B into the functional reagent A, and carrying out ultrasonic treatment to obtain the wood modifier. When the modifier prepared by the method is used for modifying wood, loss resistance of the wood is improved by 90% or above, and the storage period at room temperature exceeds 2 years. The wood modifier has a super-hydrophobic property. Anticorrosion and bactericidal performance of the wood is improved by 92% or above. The invention belongs to the field of wood modifiers.

Description

technical field [0001] The invention relates to a preparation method of a wood modifier and a wood modification method. Background technique [0002] Because of its unique composition and honeycomb porous structure, wood is easy to absorb water and cause swelling and deformation, cracking and warping, mildew and decay, etc. In order to prolong the service life of wood and improve its waterproof performance, people modify natural wood. Common methods of wood modification include: using polymers to fill modified wood, using water-borne small molecule functional agents to treat wood, using Siloxane precursors treat wood cell cavity or cell wall, and use paraffin substances to treat wood, etc., but these methods have to varying degrees the release of toxic gases, easy loss of functional reagents, and no additional functions such as flame retardant, corrosion resistance and weather resistance. In recent years, the emerging disruptive technology-nano superhydrophobic bionic lotus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K3/12B27K3/52B27K5/00
Inventor 李永峰董晓英
Owner SHANDONG AGRICULTURAL UNIVERSITY
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