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Mildew-proof antibacterial ultrathin density board and preparation method thereof

A technology of anti-mildew and anti-bacterial and anti-mold and anti-bacterial agent, which is applied in the field of anti-mildew and anti-bacterial ultra-thin density board and its preparation, can solve the problems of affecting the appearance and strength of density board, shortening the service life of density board, and the cost of molding, so as to achieve improvement Bactericidal ability, enhanced bonding, and strength-enhancing effects

Inactive Publication Date: 2021-01-12
BEIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, when the density board on the market is produced, the raw material fibers are directly pulverized by a pulverizer and then paved on the paving machine. After each layer is laid, a layer of urea-formaldehyde resin glue is sprinkled on it. Bonded into a thick plate, the thickness of such a plate is at least 5mm, if it is less than 5mm, it cannot be molded and the cost is extremely high. A large amount of adhesive produces a large amount of formaldehyde
In addition, the existing thick density boards above 5mm can only be used for home decoration, and the scope of use is limited; the boards are heavy and difficult to handle; fiber density boards are not substantially different from the particle boards on the market, and they are easy to break teeth when cutting. Problems such as plate cracking
[0005] Moreover, since the density board is made of synthetic resin and fiber, it is very easy to absorb water and cause mildew, which affects the appearance and strength of the density board and shortens the service life of the density board. Thin density board has important practical significance for the application and promotion of density board

Method used

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  • Mildew-proof antibacterial ultrathin density board and preparation method thereof
  • Mildew-proof antibacterial ultrathin density board and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A mildew-proof and antibacterial ultra-thin density board, the raw materials include the following components in parts by mass:

[0038] 50 parts of wood fiber, 30 parts of phenolic resin, 1.1 parts of γ-(2,3-glycidoxy)propyltrimethoxysilane, 20 parts of polyurethane emulsion, 4.5 parts of sodium methyl silicate and 3.5 parts of anti-mold and antibacterial agent ;

[0039] Wherein, the antifungal and antibacterial agent is a mixture of dodecyldimethylbenzyl ammonium chloride, peppermint oil, nano-titanium dioxide and 2,4-dihydroxybenzophenone in a mass ratio of 3:1:1:1.

[0040] Preparation of mildew and antibacterial ultra-thin density board:

[0041] (1) mixing dodecyl dimethyl benzyl ammonium chloride, peppermint oil, nano-titanium dioxide and 2,4-dihydroxybenzophenone evenly according to the mass ratio to obtain an anti-mildew and antibacterial agent;

[0042] (2) Pulverize the wood fiber, soak it in acetic acid solution for 5 hours, freeze-dry the wood fiber at -...

Embodiment 2

[0047] A mildew-proof and antibacterial ultra-thin density board, the raw materials include the following components in parts by mass:

[0048] 60 parts of wood fiber, 250 parts of phenolic resin, 1 part of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, 22 parts of polyurethane emulsion, 3.8 parts of sodium methyl silicate and 4.2 parts of anti-mold and antibacterial agent ;

[0049] Wherein, the antifungal and antibacterial agent is a mixture of dodecyldimethylbenzyl ammonium chloride, peppermint oil, nano-titanium dioxide and 2,4-dihydroxybenzophenone in a mass ratio of 4:2:1.2:1.

[0050] Preparation of mildew and antibacterial ultra-thin density board:

[0051] (1) mixing dodecyl dimethyl benzyl ammonium chloride, peppermint oil, nano-titanium dioxide and 2,4-dihydroxybenzophenone evenly according to the mass ratio to obtain an anti-mildew and antibacterial agent;

[0052] (2) Pulverize the wood fiber and soak it in acetic acid solution for 6 hours. After soaking, freeze-dr...

Embodiment 3

[0057] A mildew-proof and antibacterial ultra-thin density board, the raw materials include the following components in parts by mass:

[0058] 55 parts of wood fiber, 28 parts of phenolic resin, 1.2 parts of γ-(2,3-glycidoxy)propyltrimethoxysilane, 13 parts of polyurethane emulsion, 4 parts of sodium methyl silicate and 3.8 parts of anti-mold and antibacterial agent ;

[0059] Wherein, the antifungal and antibacterial agent is a mixture of dodecyldimethylbenzyl ammonium chloride, peppermint oil, nanometer titanium dioxide and 2,4-dihydroxybenzophenone in a mass ratio of 5:2:1.1:1.

[0060] Preparation of mildew and antibacterial ultra-thin density board:

[0061] (1) mixing dodecyl dimethyl benzyl ammonium chloride, peppermint oil, nano-titanium dioxide and 2,4-dihydroxybenzophenone evenly according to the mass ratio to obtain an anti-mildew and antibacterial agent;

[0062] (2) Pulverize the wood fibers, soak them in acetic acid solution for 5 hours, freeze-dry the wood fi...

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Abstract

The invention discloses a mildew-proof antibacterial ultrathin density board and a preparation method thereof, and belongs to the field of artificial board preparation. Raw materials of the mildew-proof antibacterial ultrathin density board comprise the following components: wood fibers, phenolic resin, a coupling agent, polyurethane emulsion, sodium methyl silicate and a mould-proof antibacterialagent. The preparation method comprises the following steps: soaking crushed wood fibers in an acetic acid solution, carrying out freeze-drying treatment, stirring and mixing the freeze-dried wood fibers with an antibacterial preservative, 1 / 2 amount of phenolic resin and the coupling agent, adding the polyurethane emulsion, sodium methyl silicate and the rest 1 / 2 amount of phenolic resin, and conducting stirring to obtain a blank; and carrying out hot-pressing treatment on the blank to obtain the mildew-proof antibacterial ultrathin density board. The density board is excellent in mechanicalproperty and good in antibacterial and mildew-proof effects, the preparation method is simple, and the density board has wide industrial popularization value.

Description

technical field [0001] The invention relates to the technical field of wood-based panel processing, in particular to a mold-proof and antibacterial ultra-thin density board and a preparation method thereof. Background technique [0002] Density board, the full name of density fiberboard, is made of wood fiber or other plant fiber as raw material, prepared by fiber, applied with synthetic resin, and pressed under heat and pressure. [0003] The utilization rate of production resources of density board is high, the product material is fine and dense, the performance is stable, the edge is tight, and it is easy to process, and it can make full use of resources such as forestry residues and sub-small fuelwood to develop wood-based panels to replace large-diameter wood products. In recent years, While the output of MDF is increasing rapidly, its share in the product structure of wood-based panels is also increasing. [0004] At present, when the density board on the market is pr...

Claims

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Application Information

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IPC IPC(8): B27K3/04B27K3/52B27N1/02B27N3/10B27N3/12
CPCB27K3/04B27K3/52B27N1/0209B27N3/10B27N3/12
Inventor 时君友李翔宇徐文彪
Owner BEIHUA UNIV
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