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Processing technology for enhancing nail-holding power of biomass fiberboard

A biomass fiber and processing technology, which is applied in the field of fiberboard processing, can solve the problems of easy loosening of screws, inability to apply fiberboard, and poor nail holding force.

Pending Publication Date: 2022-01-11
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

However, fiberboard also has the defect of poor nail-holding force. Because the fiberboard has a powder-like structure inside, the nail-holding force is poor, and the screws are easy to loosen after tightening.
For example, Chinese patent CN2020102621007 discloses a composite density fiberboard that improves the nail-holding force of the board. This technical solution uses the upper surface of the base layer to protrude upwards and the lower surface of the reinforcement layer to perform dislocation combination to achieve density. The multi-point reinforcement of the board prevents the fibers in the density board from cracking after the spindle enters the density board, and improves the nail-holding force of the density board; although this technical scheme can improve the nail-holding force of the fiberboard, the thickness of the processed fiberboard is relatively thick. Large, not suitable for the production of thinner fiberboard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The biomass fibers are selected from wood fibers, preferably eucalyptus fibers.

[0041] A processing technology for enhancing the nail-holding force of biomass fiberboard, the specific processing method is as follows:

[0042] 1) Put 508mmoL of hydroxymethyldioxolanone and 508mmoL of furfurylamine into the container, and heat the mixture at 60°C for 3h while continuously stirring at 230rpm in an oil bath to obtain a polymerized monomer;

[0043] 2) Weigh 100g of polytetramethylene glycol and dissolve it in a container containing 400mL of N,N-dimethylformamide, then add 10g of polymerized monomer, 21mL of isophorone diisocyanate and 43μL of dibutyltin dilaurate to the container , the reaction mixture was kept in an oil bath, heated uniformly at 60°C for 3h, and continuously stirred at a speed of 230rpm to obtain a mixture containing modified polyurethane;

[0044] 3) Mix 5.2g of bismaleimide monomer and 100g of the modified polyurethane mixture in a container at a spee...

Embodiment 2

[0057] The biomass fibers are selected from wood fibers, preferably eucalyptus fibers.

[0058] A processing technology for enhancing the nail-holding force of biomass fiberboard, the specific processing method is as follows:

[0059] 1) Put 546mmoL of hydroxymethyldioxolanone and 546mmoL of furfurylamine into the container, and heat the mixture at 63°C for 4h while continuously stirring at 260rpm in an oil bath to obtain a polymerized monomer;

[0060] 2) Weigh 105g of polytetramethylene glycol and dissolve it in a container containing 500mL of N,N-dimethylformamide, then add 13g of polymerized monomer, 22mL of isophorone diisocyanate and 46μL of dibutyltin dilaurate to the container , the reaction mixture was kept in an oil bath, heated uniformly at 62°C for 3h, and continuously stirred at a speed of 260rpm to obtain a mixture containing modified polyurethane;

[0061] 3) Mix 5.6g of bismaleimide monomer and 120g of the mixture containing modified polyurethane in a containe...

Embodiment 3

[0074] The biomass fibers are selected from wood fibers, preferably eucalyptus fibers.

[0075] A processing technology for enhancing the nail-holding force of biomass fiberboard, the specific processing method is as follows:

[0076] 1) Put 546mmoL of hydroxymethyldioxolanone and 546mmoL of furfurylamine into the container, and heat the mixture at 65°C for 5h while continuously stirring at 280rpm in an oil bath to obtain a polymerized monomer;

[0077] 2) Weigh 108g of polytetramethylene glycol and dissolve it in a container containing 600mL of N,N-dimethylformamide, then add 15g of polymerized monomer, 23.5mL of isophorone diisocyanate and 52μL of dibutyltin dilaurate to In the container, the reaction mixture was kept in an oil bath, heated uniformly at 65°C for 4h, and continuously stirred at a speed of 260rpm to obtain a mixture containing modified polyurethane;

[0078] 3) Mix 5.8g of bismaleimide monomer and 130g of modified polyurethane mixture in a container at a spee...

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Abstract

The invention discloses a processing technology for enhancing the nail-holding power of a biomass fiberboard, and relates to the technical field of fiberboard processing. The processing technology comprises the following steps: firstly preparing a polymeric monomer, then carrying out addition polymerization reaction on the polymeric monomer, polyhydric alcohol and diisocyanate, reacting the obtained mixture with a bismaleimide monomer to obtain a polymer powder material, then uniformly mixing the polymer powder material with biomass fiber for hot press molding, and conducting cooling treatment to obtain the fiberboard with excellent nail-holding power. Interpenetrating continuous phase polymer layers which penetrate through one another are formed in the biomass fiberboard, the friction force between steel nails and the fiberboard is increased while the compactness of the fiberboard is increased, and therefore the resistance generated when the steel nails are pulled out of the fiberboard is increased, and the nail-holding power of the fiberboard is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of fiberboard processing, and in particular relates to a processing technology for enhancing the nail-holding force of biomass fiberboards. Background technique [0002] Fiberboard, also known as density board, is a wood-based panel made of wood fiber or other plant fiber, applied with urea-formaldehyde resin or other adhesives used. Fiberboard has the advantages of uniform material, small vertical and horizontal strength difference, and is not easy to crack. It is widely used, mainly used in the production of finished furniture, and also used in laminate flooring, door panels, partition walls, etc. The structure of fiberboard is more uniform than that of natural wood, and it also avoids problems such as decay and insects. At the same time, it has small expansion and contraction and is easy to process. The development of fiberboard production is an effective way to comprehensively utilize wood resources. ...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/12B27N3/00B27N1/00C09J175/14C08G18/83
CPCB27N3/12B27N3/04B27N3/002B27N1/00C09J175/14C08G18/83
Inventor 刘池伟陆昌余郭海涛赵红阳吴淳生
Owner 阜阳大可新材料股份有限公司
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