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Formaldehyde-removing, corrosion-preventing and environment-friendly agriculture and forestry residue fiberboard and preparation method thereof

A technology of residue and fiberboard, applied in the field of biomass composite decoration materials, can solve the problems of formaldehyde pollution, limited application, easy corruption of soybean protein adhesive, etc., achieve low production cost and expand the application range

Inactive Publication Date: 2021-01-22
BEIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the soybean protein adhesive is easily corrupted and deteriorated, which limits its application in the production of wood-based panels to a certain extent.
At the same time, the problem of formaldehyde pollution in the indoor environment has always been the focus of public attention and has not been successfully resolved so far.

Method used

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  • Formaldehyde-removing, corrosion-preventing and environment-friendly agriculture and forestry residue fiberboard and preparation method thereof
  • Formaldehyde-removing, corrosion-preventing and environment-friendly agriculture and forestry residue fiberboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Preparation of agricultural and forestry residues: purchase 50g of branches produced in the process of forest tending and 50g of straw produced in agricultural production according to the process requirements.

[0037]2) Preparation of chitosan nanoparticles: 1 g of chitosan was dissolved in 200 mL of 1% acetic acid solution, and magnetically stirred for 3 hours under a nitrogen atmosphere until a transparent chitosan solution was obtained. At room temperature, the pH value of the chitosan solution was adjusted to 4 with 1 M hydrochloric acid solution, and magnetically stirred at 500 rpm at 70° C. for 7 hours. Dissolve 0.2g of citric acid in 10mL of distilled water, adjust the pH value of the citric acid solution to 4 with a concentration of 1M sodium hydroxide solution, and add the citric acid solution drop by drop to the chitosan solution with a pH value of 4 , the resulting product was centrifuged at 4000 rpm for 40 minutes, and freeze-dried at -50° C. for 36 hour...

Embodiment 2

[0047] 1) Preparation of agricultural and forestry residues: purchase 50g of branches produced in the process of forest tending and 50g of straw produced in agricultural production according to the process requirements.

[0048] 2) Preparation of chitosan nanoparticles: 2 g of chitosan was dissolved in 400 mL of 1% acetic acid solution, and magnetically stirred for 3 hours under a nitrogen atmosphere until a transparent chitosan solution was obtained. At room temperature, the pH value of the chitosan solution was adjusted to 4 with 1 M hydrochloric acid solution, and magnetically stirred at 500 rpm at 70° C. for 7 hours. Dissolve 0.4g citric acid in 20mL distilled water, adjust the pH value of the citric acid solution to 4 with a concentration of 1M sodium hydroxide solution, and add the citric acid solution drop by drop to the chitosan solution with a pH value of 4 , the resulting product was centrifuged at 4000 rpm for 40 minutes, and freeze-dried at -50° C. for 36 hours to ...

Embodiment 3

[0058] 1) Preparation of agricultural and forestry residues: purchase 50g of branches produced in the process of forest tending and 50g of straw produced in agricultural production according to the process requirements.

[0059] 2) Preparation of chitosan nanoparticles: 3 g of chitosan was dissolved in 600 mL of 1% acetic acid solution, and magnetically stirred for 3 hours under a nitrogen atmosphere until a transparent chitosan solution was obtained. At room temperature, the pH value of the chitosan solution was adjusted to 4 with 1 M hydrochloric acid solution, and magnetically stirred at 500 rpm at 70° C. for 7 hours. Dissolve 0.6g of citric acid in 30mL of distilled water, adjust the pH of the citric acid solution to 4 with a concentration of 1M sodium hydroxide solution, and add the citric acid solution drop by drop to the chitosan solution with a pH of 4 , the resulting product was centrifuged at 4000rpm for 40min, and freeze-dried at -50°C for 36 hours to obtain chitosa...

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Abstract

The invention belongs to a biomass composite decorative material, and particularly relates to a formaldehyde-removing, corrosion-preventing and environment-friendly agriculture and forestry residue fiberboard and a preparation method thereof. Specifically, agriculture and forestry residue fibers are used as the main raw material, a soybean protein adhesive without formaldehyde, chitosan nanoparticles and modified chitosan nanoparticles are added, and the antibacterial property of the chitosan nanoparticles and the formaldehyde absorption property of the modified chitosan nanoparticles are utilized to prepare the environment-friendly agriculture and forestry residue fiberboard with formaldehyde-removing and corrosion-preventing functions. The formaldehyde-removing, corrosion-preventing andenvironment-friendly agriculture and forestry residue fiberboard is suitable for industrial manufacturing, low in production cost, environmentally friendly and capable of purifying formaldehyde, preventing corrosion and the like, products of the fiberboard can be used as furniture, indoor decoration, floor base materials and the like, and conditions are created for healthy development of the fiberboard industry and widening of the application range.

Description

technical field [0001] The invention belongs to biomass composite decoration materials, in particular to a fiberboard of aldehyde-removing, anti-corrosion, environment-friendly agricultural and forestry residues and a preparation method thereof. Specifically, the present invention takes the agricultural and forestry residue fiber as the main raw material, by adding formaldehyde-free soybean protein adhesive, chitosan nanoparticles and modified chitosan nanoparticles, utilizing the antibacterial properties and Modified the aldehyde absorbing properties of chitosan nanoparticles to manufacture environmentally friendly agricultural and forestry residue fiberboards with anti-corrosion and anti-corrosion functions. Background technique [0002] Fiberboard is made of wood fibers obtained by mechanical separation of branches, shrubs and other residues produced in the process of forest tending and straw and other residues produced in agricultural production, and then applied with ur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N1/00B27N3/04B27N3/00B27N3/08
CPCB27N1/00B27N3/04B27N3/007B27N3/08
Inventor 时君友刘恩利徐文彪洪远志
Owner BEIHUA UNIV
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