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Preparation method of organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties

A super-hydrophobic and oleophobic, modifier technology, used in wood treatment, wood impregnation, wood impregnation, etc., can solve problems such as poor anti-loss, special odor, and single function.

Active Publication Date: 2016-06-01
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide an organic-inorganic hybrid superhydrophobic and oil-repellent anti-corrosion Preparation method of mildew bactericidal flame retardant weather-resistant wood modifier

Method used

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  • Preparation method of organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties
  • Preparation method of organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties
  • Preparation method of organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties

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specific Embodiment approach 1

[0035] Specific implementation mode 1: The preparation method of the organic-inorganic hybrid superhydrophobic oleophobic mildew-proof, bactericidal, flame-retardant and weather-resistant wood modifier in this embodiment is carried out according to the following steps:

[0036] 1. Weigh 2%-10% organoalkoxysilane, 10%-40% deionized water, and 50%-88% absolute ethanol respectively according to mass percentage, and stir magnetically at room temperature for 5 minutes after mixing to obtain mixture;

[0037] 2. Add functional reagent A to adjust the pH value, and stir magnetically at a certain temperature for a certain period of time;

[0038] The functional reagent A described in step 2 is one of formic acid, glacial acetic acid, citric acid and hydrochloric acid, or any combination of several arbitrary proportions, adjust the pH value to 2.5-5, and stir magnetically for 0.5 h-24h;

[0039] The functional reagent A described in step 2 may be one of ammonia water and NaOH or a co...

specific Embodiment approach 2

[0048] Embodiment 2: This embodiment is different from Embodiment 1 in that the organoalkoxysilane described in step 1 is ethyl orthosilicate or methyl orthosilicate. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0049] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the fluorine-containing silane coupling agent described in step 4 is heptadecafluorodecyltrimethoxysilane or heptadecafluorosilyltriethoxy base silane. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a preparation method of a wood modifier, in particular to a preparation method of an organic-inorganic hybrid super-hydrophobic and oleophobic wood modifier with mold-proof, sterilization, anti-flaming and weather-proof properties, and belongs to the field of preparation of wood modifiers. The preparation method aims to solve the technical problems that existing wood modifiers have high toxicity, special peculiar smells and poor run-away resisting capacity, pollute the environment and are simplex in function. The preparation method comprises the steps that organoalkoxysilane, deionized water and absolute ethyl alcohol are mixed; a functional reagent A is added for a reaction; a functional reagent B is added for a reaction; a fluorine-containing silane coupling agent is added for a reaction; a water-based fluorine-containing high-molecular compound, a curing agent and a functional reagent C are added, the mixture is stirred, and the modifier is obtained. The static water contact angle of the surface of wood modified by the modifier can reach 150 degrees or above, and the rolling angle is smaller than 10 degrees. The edible oil contact angle of the modified wood surface can reach 120 degrees or above, and modified wood surface has the oleophobic characteristic. In addition, the corrosion prevention and sterilization performance of the modified wood is improved by 90% or above, the weather resistance of the modified wood is improved by 10 times, and the anti-flaming performance of the modified wood is also remarkably improved.

Description

technical field [0001] The invention relates to a preparation method of a wood modifier. 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, decay and degradation caused by mold erosion, and photothermal degradation caused by fire and weather. In order to extend the service life of wood and improve its waterproof, anti-corrosion, weather resistance, flame retardant and other durability, people modify natural wood. The existing methods for wood modification are as follows: 1. Using vinyl monolith (Chinese Patent Application No. 200710072699.2) or heterocyclic polymerizable monomer (International Patent Publication No. CN1671526A in China) forms a polymer to treat wood, which improves the mechanical properties of wood and partially improves durability, but this The modifier used in this method may be highly toxic...

Claims

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Application Information

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IPC IPC(8): B27K3/12B27K3/52
CPCB27K3/12B27K3/52B27K2240/20B27K2240/30B27K2240/50B27K2240/70
Inventor 李永峰董晓英
Owner SHANDONG AGRICULTURAL UNIVERSITY
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