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Production method of 1mm environment-friendly and damp-proof high-density fiberboard

A technology of high-density fiberboard and production method, which is applied in the pretreatment of molding materials, manufacturing tools, wood treatment, etc., can solve the problem of poor moisture resistance of melamine-modified urea-formaldehyde resin, reducing the performance and service life of wood-based panels, and the expansion rate of water absorption thickness. High problems, to achieve excellent moisture resistance and dimensional stability, improve performance and service life, and not easy to absorb moisture and deform

Active Publication Date: 2020-11-20
阜阳大可新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN2016101036090 discloses a preparation method of ammonium ammonium hydrogen modified urea-formaldehyde resin glue. This technical process utilizes melamine to modify the urea-formaldehyde resin, thereby improving the waterproof performance of the resin glue. However, due to the limited amount added, resulting in Melamine-modified urea-formaldehyde resin has poor moisture resistance and poor storage stability. When it is used to make wood-based panels, the water-absorbing thickness expansion rate is relatively high, which makes the wood-based panels easy to absorb moisture and deform, which will greatly reduce the performance and use of wood-based panels. Life expectancy, so it cannot meet people's actual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A 1mm environment-friendly moisture-proof high-density fiberboard production method, the specific process method is as follows:

[0020] 1) According to the mass volume ratio of 1ml:48ml:5g, mix the weighed ethanolamine, ethylene glycol methyl ether and zinc acetate to form a zinc oxide seed liquid, and spin-coat the seed liquid on the cleaned and dried FTO conductive On the glass, set the rotation speed at 700r / min for 3s, then at 3000r / min for 10s, repeat the spin coating 3 times, dry it naturally, put it in a tube furnace, anneal at 350°C for 30min, and anneal The seed crystal layer of the final FTO conductive glass is placed downwards in the reactor, and the concentration of 0.05mol / L prepared by hexamethylenetetramine and zinc nitrate according to the molar ratio of 1:1.5 is added to the reactor. Precursor solution until the conductive glass is submerged, sealed and reacted at 90°C for 5 hours, and naturally cooled to room temperature to obtain FTO conductive glass...

Embodiment 2

[0037] A 1mm environment-friendly moisture-proof high-density fiberboard production method, the specific process method is as follows:

[0038] 1) According to the mass volume ratio of 3ml:50ml:6g, mix the weighed ethanolamine, ethylene glycol methyl ether and zinc acetate to form a zinc oxide seed liquid, and spin-coat the seed liquid on the cleaned and dried FTO conductive On the glass, set the rotation speed at 800r / min for 5s, then at 3500r / min for 15s, repeat the spin coating 4 times, dry it naturally, put it in a tube furnace, anneal at 400°C for 40min, anneal the The seed crystal layer of the final FTO conductive glass is placed downwards in the reactor, and the concentration of 0.07mol / L prepared by hexamethylenetetramine and zinc nitrate according to the molar ratio of 1:2 is added to the reactor. Precursor solution, until the conductive glass is submerged, sealed and reacted at 100°C for 7 hours, and naturally cooled to room temperature to obtain FTO conductive glass...

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Abstract

The invention discloses a production method of a 1mm environment-friendly and damp-proof high-density fiberboard, and relates to the technical field of artificial boards. The production method comprises the following specific steps: (1) forming nano zinc oxide on the surface of FTO conductive glass; (2) dripping nano graphene aqueous solution on the FTO conductive glass on which the nano zinc oxide grows in a spinning manner to obtain nano zinc oxide / graphene composite particles; (3) preparing a melamine modified urea-formaldehyde resin adhesive; (4) slicing wood and then carrying out treatment to obtain wood fibers; (5) pretreating the wood fibers; and (6) adding paraffin and the melamine modified urea-formaldehyde resin adhesive into the pretreated fibers, and after drying, carrying outpaving and hot pressing treatment. A compact nanowire structure layer is formed at the interface of the resin adhesive and the wood fibers, so that moisture can be blocked, then the moisture is prevented from entering the fiberboard to cause moisture absorption and deformation of the fiberboard, therefore, the moisture resistance of the fiberboard is improved, further, the use performance of the fiberboard is greatly improved, and the service life of the fiberboard is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels, and in particular relates to a production method of 1mm environment-friendly moisture-proof high-density fiberboard. Background technique [0002] High-density fiberboard is a man-made board made by mechanically separating and chemically treating wood or plant fibers, adding adhesives and waterproofing agents, and then molding under high temperature and high pressure. Therefore, the quality of high-density fiberboard depends partly on The quality of adhesives for wood-based panels. Urea-formaldehyde resin adhesive was successfully synthesized in 1884 and began to be sold in the market in 1931. It has the advantages of low cost, wide source of raw materials, and good adhesive performance. However, urea-formaldehyde resin adhesives have problems such as poor water resistance, poor aging resistance, short storage time, and high brittleness of the adhesive layer after curing. The wood-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/00B27N3/04B27N3/08B27N1/00B27N1/02B27K3/16B27K5/00B27K5/04C08G12/38
CPCB27N3/002B27N3/04B27N3/08B27N1/00B27N1/0209B27K3/16B27K5/04B27K5/0085C08G12/38
Inventor 刘池伟陆昌余郭海涛赵红阳吴淳生胡扬州
Owner 阜阳大可新材料股份有限公司
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