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A kind of preparation method of wood antifungal agent

A mildew inhibitor and wood technology, applied in wood impregnation, wood treatment, wood impregnation and other directions, can solve the problems of poor control effect and short control time, and achieve the effect of preventing water penetration, good film-forming performance and small molecular weight

Inactive Publication Date: 2020-01-17
HEBEI HOFMANN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of a wood antifungal agent for the problems of poor control effect and short control time of the current wood antifungal agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A preparation method of wood antifungal agent, comprising the steps:

[0018] (1) Take diethylaminoethyl methacrylate and add sodium vinyl sulfonate in a mass ratio of 3 to 6: 1 to 3, stir and mix for 20 to 30 min, and then add 9 to 13 times the mass of sodium vinyl sulfonate. Deionized water, heat up to 75~80℃, stir and mix for 1~2h to obtain a stirred mixture, take the stirred mixture and add ammonium persulfate in a mass ratio of 50:1, keep at 75~80℃ for 5~6h, dialyze for 5~6h, take The dialysate is freeze-dried to obtain a dry product for later use;

[0019] (2) Take epoxy fatty acid methyl ester and add 1,4-dioxane in a mass ratio of 1~3:2~4, stir and mix for 20~30min, and then add 2~4% by mass of 1,4-dioxane The boron trifluoride diethyl ether was stirred and mixed at 25 to 30 ° C for 2 to 3 hours to obtain a stirred mixture, and the stirred mixture was added with a mass fraction of 60% ethanol at a mass ratio of 80 to 90:1, and rotary evaporation was performed t...

Embodiment 1

[0024] Wood wax oil: purchased from Tianjin Lighthouse Paint Industry Development Co., Ltd.

[0025] A preparation method of wood antifungal agent, comprising the steps:

[0026] (1) Take diethylaminoethyl methacrylate and add sodium vinyl sulfonate in a mass ratio of 3:1, stir and mix for 20 minutes, then add deionized water with 9 times the mass of sodium vinyl sulfonate, and heat up to 75°C Stir and mix for 1 hour to obtain a stirred mixture, take the stirred mixture and add ammonium persulfate in a mass ratio of 50:1, keep at 75 °C for 5 hours, dialyze for 5 hours, and freeze-dry the dialysate to obtain a dried product for later use;

[0027] (2) Take epoxy fatty acid methyl ester and add 1,4-dioxane in a mass ratio of 1:2, stir and mix for 20 minutes, and then add boron trifluoride ethyl ether with a mass of 2% of 1,4-dioxane. Stir and mix at 25°C for 2 hours to obtain a stirred mixture, take the stirred mixture in a mass ratio of 80:1, add ethanol with a mass fraction o...

Embodiment 2

[0032] Wood wax oil: purchased from Tianjin Lighthouse Paint Industry Development Co., Ltd.

[0033] A preparation method of wood antifungal agent, comprising the steps:

[0034](1) Take diethylaminoethyl methacrylate and add sodium vinyl sulfonate in a mass ratio of 6:3, stir and mix for 30 minutes, then add deionized water with 13 times the mass of sodium vinyl sulfonate, and heat up to 80°C Stir and mix for 2 hours to obtain a stirred mixture, take the stirred mixture and add ammonium persulfate in a mass ratio of 50:1, keep at 80 °C for 6 hours, dialyze for 6 hours, and freeze-dry the dialysate to obtain a dry product for use;

[0035] (2) Take epoxy fatty acid methyl ester and add 1,4-dioxane in a mass ratio of 3:4, stir and mix for 30 minutes, and then add 1,4-dioxane with 4% boron trifluoride ether by mass. Stir and mix at 30 °C for 3 hours to obtain a stirred mixture, take the stirred mixture in a mass ratio of 90:1, add ethanol with a mass fraction of 60%, and perfor...

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Abstract

The invention discloses a preparation method of a wood mildewproof agent and belongs to the field of mildewproof agents. According to the method, glucose is added and serves as reducing sugar, the substitution reaction can occur, meanwhile, the molecular weight is small, the glucose can accelerate permeating and enter the cell wall of wood, water in a hydroxyl mildewproof coating added with 1,3-dimethylol dihydroxy ethylene urea forms ammonia key combination easily, the speed of the water to volatilize into air is reduced, the remaining part reacts and deposits in a cell cavity, therefore, thespeed of the water in the coating to diffuse and escape to the interior of the wood can be relieved, the drying speed of the coating is increased, after deposition, the cell wall of the wood is swelled, the cell cavity is filled and blocked, the ability of the water to swell and adsorb the cell wall of the wood at the interface and permeate and diffuse to the cell cavity can be inhibited, the permeation amount of the water is reduced, the damage degree to the chemical combination of the interface by the water is weakened, and the corrosion resisting and bacterial resisting functions of the wood are enhanced. The method solves the problems that a current wood mildewproof agent is poor in treatment effect and the treatment time is short.

Description

technical field [0001] The invention belongs to the field of antifungal agents, in particular to a preparation method of a wood antifungal agent. Background technique [0002] Mildew prevention of wood has always been a difficult problem in wood processing, and many scholars have studied the theory and application process. The reason why wood is mildewed is that there are nutrients necessary for mold in wood, namely monosaccharide, starch and hemicellulose, moisture, etc.; in addition, the acidity of wood (ph is 4.0~6.5) is just suitable for the needs of fungi , temperature and oxygen are also essential conditions for the survival of molds. Since the result of wood mildew is only to discolor the wood surface, and the range of discoloration is shallow, it can be removed with a brush or by planing off the surface layer. Mildew has little effect on the quality of the wood itself and is generally not considered a defect. However, after the mold infects the wood, it can increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/52B27K3/00
CPCB27K3/005B27K3/52B27K2240/20B27K2240/70
Inventor 俞小峰庄文琴刘红妹
Owner HEBEI HOFMANN NEW MATERIAL TECH CO LTD
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