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Preparation method of room temperature curing wood multifunctional modifier and wood modification method
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A multifunctional modifier, room temperature curing technology, applied in wood treatment, wood impregnation, wood impregnation and other directions, can solve the problems of poor anti-shedding ability, high construction temperature, single function, etc., to achieve improved resistance to bleed and low cost , the effect of simple operation
Active Publication Date: 2021-02-26
SHANDONG AGRICULTURAL UNIVERSITY
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[0006] The present invention aims to solve the problems of high construction temperature, high toxicity, poor anti-loss ability and single function of existing wood modifiers, and provides a preparation method and wood modification method of a room temperature curing multifunctional wood modifier
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specific Embodiment approach 1
[0043] Specific embodiment one: the preparation method of the room temperature curing wood multifunctional modifier of this embodiment comprises the following steps:
[0044] 1. Weigh 1%-50% hydrophobic polymer resin, 0.1%-1% additives, 0.1%-10% curing agent and the rest of the solvent according to mass percentage, and stir at room temperature for at least 2 hours, the functional reagent A was obtained;
[0045] 2. Weigh 0.1%-5% of nanoparticles, 0.1%-2% of surface modifier and the rest of toluene according to mass percentage, mix and stir for 72-76 hours, then wash with acetone, and then set the temperature at 8000-9000rpm Centrifuge for 3-5 times, then dry at 78-82°C for 12-14 hours to obtain functional reagent B;
[0046] 3. Add functional reagent C to functional reagent A, stir evenly, then add functional reagent B, and ultrasonicate for at least 30 minutes to obtain a wood multifunctional modifier; the quality of functional reagent B is 0.1%-1 of the mass of functional r...
specific Embodiment approach 2
[0047] 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.
[0048] The fluorocarbon resin in this embodiment 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
[0049] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step one, the auxiliary agent is dibutyltin dilaurate. Others are the same as in the first or second embodiment.
[0050] The role of the auxiliary agent in this embodiment is to play a drying effect.
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Abstract
The invention discloses a preparation method of a room-temperature curing multifunctional wood modifier and a wood modification method, and relates to a preparation method of a wood modifier and a wood modification method. The purpose of the method is to solve the problems of high construction temperature, high toxicity, poor anti-loss ability and single function of the existing wood modifier. Method: 1. Weigh hydrophobic polymer resin, auxiliary agent, curing agent and solvent, stir at room temperature after mixing to obtain functional reagent A; 2. Weigh nanoparticles, surface modifier and toluene, stir after mixing, and then Wash with acetone, centrifuge, and dry to obtain functional reagent B; 3. Add functional reagent C to functional reagent A, stir evenly, then add functional reagent B, and ultrasonically obtain a wood multifunctional modifier. The wood modified by the functional modifier has superhydrophobic self-cleaning and oleophobic properties. The antiseptic and bactericidal performance of the wood modified by the functional modifier is improved by more than 90%, and the loss resistance is significantly improved. The invention is used in 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. [0003] In recent years, the emerging disruptive technology-nano superhydrophobic bio...
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