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A kind of production method of 1mm thick environment-friendly moisture-proof high-density fiberboard

A high-density fiberboard and production method technology, 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, reduced performance and service life of wood-based panels, and water-absorbing thickness expansion rate Advanced problems, achieve excellent moisture resistance and dimensional stability, improve performance and service life, and inhibit fiber deformation

Active Publication Date: 2022-07-08
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 production method of 1mm thick environment-friendly moisture-proof high-density fiberboard, the specific process method is as follows:

[0020] 1) According to the mass-to-volume ratio of 1ml:48ml:5g, mix the weighed ethanolamine, ethylene glycol methyl ether and zinc acetate into a zinc oxide seed solution, spin-coat the seed solution on the cleaned and dried FTO conductive On the glass, set the rotation speed to 700r / min for 3s, then the rotation speed to 3000r / min and the rotation time for 10s, repeat the spin coating 3 times, put it in a tube furnace after natural drying, anneal at 350℃ for 30min, then anneal the glass. The seed layer of the rear FTO conductive glass is placed downward into the reaction kettle, and the reaction kettle is added with hexamethylenetetramine and zinc nitrate according to the molar ratio of 1:1.5, and the concentration is 0.05mol / L. The precursor liquid was used to submerge the conductive glass, and after sealing, react at 90 °C for 5 ...

Embodiment 2

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

[0038] 1) According to the mass-to-volume ratio of 3ml:50ml:6g, mix the weighed ethanolamine, ethylene glycol methyl ether and zinc acetate to form a zinc oxide seed solution, spin-coat the seed solution on the cleaned and dried FTO conductive On the glass, set the rotation speed to 800r / min for 5s, then the rotation speed to 3500r / min for 15s, repeat the spin coating 4 times, put it into a tube furnace after natural drying, anneal at 400℃ for 40min, and then anneal the glass. The seed layer of the rear FTO conductive glass is put into the reaction kettle downward, 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 reaction kettle. The precursor liquid was used to submerge the conductive glass, and after sealing, react at 100 °C for 7 hours, and t...

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Abstract

The invention discloses a method for producing a 1mm thick environment-friendly moisture-proof high-density fiberboard, which relates to the technical field of wood-based panels. The specific process is as follows: 1) forming nano-zinc oxide on the surface of FTO conductive glass; 2) conducting FTO on the surface of FTO conductive glass; Spin-drop nanographene aqueous solution on glass to obtain nano-zinc oxide / graphene composite particles; 3) prepare melamine-modified urea-formaldehyde resin glue; 4) slice wood and process to obtain wood fiber; 5) pretreat wood fiber ; 6) Add paraffin and melamine modified urea-formaldehyde resin glue to the pretreated fibers, and after drying, it can be paved and hot-pressed. By forming a dense nanowire structure layer at the interface between the resin glue and the wood fiber, the present invention can block moisture and prevent moisture from entering the fiberboard and causing the fiberboard to absorb moisture and deform, thereby improving the moisture-proof performance of the fiberboard and greatly improving the performance of the fiberboard. The performance and service life of fiberboard.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels, and in particular relates to a production method of a 1 mm thick environment-friendly moisture-proof high-density fiberboard. Background technique [0002] High-density fiberboard is a man-made board made of wood or plant fibers by mechanical separation and chemical treatment, mixed with adhesives and waterproofing agents, etc., and then formed by high temperature and high pressure. Therefore, the quality of high-density fiberboard depends partly on the quality. quality of adhesives for wood-based panels. Urea-formaldehyde resin adhesive was successfully synthesized in 1884 and started to be sold in the market in 1931. It has the advantages of low cost, wide source of raw materials and good adhesive properties. 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 aft...

Claims

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Application Information

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Patent Type & Authority Patents(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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