Preparation method of wood mildew inhibitor

A mildew inhibitor and wood technology, applied in wood treatment, wood impregnation, wood impregnation, etc., can solve the problems of acid and alkali resistance of mildew inhibitor, short drug effect time, easy leakage and loss, etc., and achieve high electronegativity. , the effect of improving surface strength and impermeability, and high fluidity

Inactive Publication Date: 2019-04-30
常州双元职业技能培训中心
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Problems solved by technology

[0010] The technical problem mainly solved by the present invention is aimed at the defect that most of the current wood anti-mold preservatives are water-borne, easy to ooze and lose, and have a short efficacy time. , provides a kind of preparation method of wood antifungal agent

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  • Preparation method of wood mildew inhibitor

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[0033] Preparation of coral ginger essential oil: take coral ginger rhizome and distilled water according to the mass ratio of 1:7, mix and disperse for 2 hours to obtain a dispersion liquid, put the dispersion liquid into a distillation bottle for distillation, control the distillation temperature to 90°C, and the distillation time to 1 hour , remove the impurity that distills out, collect and obtain coral ginger purified liquid, then coral ginger purified liquid and dehydrated alcohol are added in the extraction kettle by mass ratio 20: 1, in the extraction kettle, input supercritical carbon dioxide fluid, at extraction pressure of Extraction is carried out under the conditions of 6MPa and extraction temperature of 25°C. After extraction for 45 minutes, the extracted supercritical carbon dioxide fluid is obtained;

[0034] The extracted supercritical carbon dioxide fluid is introduced into the rectification column for separation, the pressure of the rectification column is co...

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Abstract

The invention discloses a preparation method of a wood mildew inhibitor, and belongs to the technical field of wood additive agents. A wood swelling agent is prepared by a mixed solution of triethylamine hydrogen trifluoride and ammonium hexafluorophosphate, and further penetration of the wood mildew inhibitor is facilitated. Zingiber corallinum hance essential oil not only has bacteriostatic andanti-mildew effects on wood, but also can reduce the water absorption performance of wood. Heavy metal ions in high titanium slag powder extracted from blast furnace slag of Fangang by sulfuric acid mostly exist in a sulfate form. Aluminum ions and heavy metal ions in the high titanium slag powder reduce the concentration of hydroxide radicals under an alkaline condition, and hydrated silicate isformed on wood surface; the hydrated silicate is insoluble under the alkaline condition and forms an alkali-resistant hydration film, and the surface strength and impermeability of the wood are improved. A leaching solution is extracted from rice bran and beta-cyclodextrin is subjected to cationic etherification with 2,3-epoxypropyl trimethylammonium chloride, and a wood adhesive is obtained; thebinding force of metal ions of the wood mildew inhibitor to wood fibers is improved.

Description

technical field [0001] The invention discloses a preparation method of a wood antifungal agent, belonging to the technical field of wood additives. Background technique [0002] Wood is easy to mold and breed bacteria in humid and rainy areas. The mold of wood is caused by mold erosion of wood. Different molds form mold spots of different colors on the surface of wood, such as black, green, yellow-red, blue-green, etc. . Mold likes a humid environment, so the ends of logs, planks, and veneers that have not been dried are prone to mold, especially the sapwood of broad-leaved wood. [0003] The reason why wood is moldy is that there are nutrients necessary for mold in wood, that is, monosaccharides, starch, hemicellulose, water, etc.; in addition, the acidity value of wood just meets the needs of fungi, and the temperature and oxygen are also Indispensable condition for the survival of mold. Mildew has little effect on the wood itself and is generally not considered a defec...

Claims

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Application Information

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IPC IPC(8): B27K3/52B27K3/00C11B9/02
CPCB27K3/005B27K3/007B27K3/52B27K2240/20B27K2240/70C11B9/022C11B9/025C11B9/027
Inventor 谭建平何俊欣陈莉莉
Owner 常州双元职业技能培训中心
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