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Preparation method for anti-corrosion formaldehyde-free artificial board

A wood-based panel, anti-corrosion technology, applied in the pretreatment of molding materials, flat products, manufacturing tools and other directions, can solve the problems of easy to produce mildew, affecting the service life of the board, human and environmental hazards, etc., to increase the service life, The effect of not easy to mildew and low production cost

Inactive Publication Date: 2017-07-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the current wood-based panels are easy to release formaldehyde, which causes great harm to the human body and the environment. The problem of adverse effects, the present invention uses wood chips as the base material, by cooking with the stems of wormwood in an oxidative environment, absorbing and obtaining the antibacterial substances in the stems of wormwood, and increasing the adhesion with the obtained concentrate at the same time. The adsorbate is stabilized by freezing treatment, and then the filtrate is mixed with pigskin for cooking under high temperature and pressure, and the cooking extract is modified with tannin and dimethylethoxysilane to increase its water resistance and antibacterial properties , followed by sodium lauryl sulfate to improve its surface activity, increase its bond strength, supplemented with sodium silicate to increase its mechanical properties, and then mixed with freeze-dried products, pre-pressed, and finally hot-pressed to prepare an anti-corrosion type Formaldehyde-free wood-based panels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] According to the mass ratio of 6:1, take wood chips and wormwood stems and put them in a 45°C drying oven to dry for 5 hours, then put them into a pulverizer and pulverize them at 300r / min for 10min, collect the pulverized mixture, and double the mass of the pulverized mixture and the pulverized mixture The mass fraction of 15% hydrogen peroxide is put into a container, protected by hydrogen, and the container is heated to 80°C and kept for 1 hour; Carry out press filtration, collect the press filtrate and filter residue, put the filter residue into a vacuum freeze dryer, set the temperature at -35°C, and vacuum degree of 6Pa, freeze-dry for 20min, collect the freeze-dried product, and set aside; % of the pigskin is put into a mill, and ground at 300r / min for 30min, the milled mixture is put into a high-pressure reactor, and tannins with 12% of the mass of pigskin and sodium silicate with 6% of the mass of pigskin are added respectively. 1. Sodium lauryl sulfate with 2....

example 2

[0021]According to the mass ratio of 9:1, take wood chips and wormwood stems and put them in a 45°C drying oven to dry for 7 hours, then put them into a pulverizer and pulverize them at 300r / min for 15min, collect the pulverized mixture, and make the pulverized mixture and the pulverized mixture 4 times the mass The mass fraction of 15% hydrogen peroxide is put into the container, protected by hydrogen, the container is heated to 85°C, and kept for 3 hours; Carry out press filtration, collect the press filtrate and filter residue, put the filter residue into a vacuum freeze dryer, set the temperature at -30°C, and vacuum at 9Pa, freeze-dry for 25min, collect the freeze-dried product, and set aside; the above-mentioned filtrate and its mass are 50 % of the pigskin is put into a mill, and ground at 300r / min for 40min, the milled mixture is put into a high-pressure reactor, and tannins with 14% of the mass of pigskin and sodium silicate with 8% of the mass of pigskin are added res...

example 3

[0024] According to the mass ratio of 8:1, take wood chips and wormwood stems and put them in a drying oven at 45°C to dry for 6 hours, then put them into a pulverizer and pulverize them at 300r / min for 13min, collect the pulverized mixture, and triple the mass of the pulverized mixture and the pulverized mixture The mass fraction of 15% hydrogen peroxide is put into a container, protected by hydrogen, and the container is heated to 83°C and kept for 2 hours; Carry out press filtration, collect the press filtrate and filter residue, put the filter residue into a vacuum freeze dryer, set the temperature at -33°C, vacuum degree of 7Pa, freeze-dry for 23min, collect the freeze-dried product, and set aside; % of the pigskin is put into a mill, and ground for 35 minutes at 300r / min, the milled mixture is put into a high-pressure reactor, and tannins with 13% of the weight of pigskin and sodium silicate with 7% of the weight of pigskin are added respectively. 1. Sodium lauryl sulfat...

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Abstract

The invention relates to a preparation method for an anti-corrosion formaldehyde-free artificial board, and belongs to the technical field of artificial boards. The preparation method comprises the following steps: utilizing saw dust as a base material; stewing the saw dust and stems of artemisia argyi in an oxidizing environment, and adsorbing to obtain antibacterial substances in the stems of the artemisia argyi; simultaneously, increasing the adhesion degree with an obtained concentrate, and finally, stabilizing an adsorbate through freezing treatment; then, mixing filtrate and pigskin and stewing a mixture at a high temperature and a high pressure; modifying a stewing extract by utilizing tannin and dimethylethoxysilane to improve the water resistance and the antibacterial property of the stewing extract; then, improving the surface activity and increasing the bonding strength of the stewing extract through lauryl sodium sulphate; increasing the mechanical property of the stewing extract with the assistance of sodium silicate; mixing the stewing extract with a freeze-dried substrate; pre-pressing and forming; finally, performing thermal pressing to prepare the anti-corrosion formaldehyde-free artificial board. The anti-corrosion formaldehyde-free artificial board prepared by the preparation method does not release formaldehyde and have harm to a human body and is not liable to mildew; the service life is prolonged; the manufacturing cost is low.

Description

technical field [0001] The invention relates to a method for preparing an anti-corrosion formaldehyde-free wood-based panel, which belongs to the technical field of wood-based panels. Background technique [0002] In recent years, affected by the increasing shortage of timber resources, the development of my country's forestry industry has been restricted to a certain extent. It is an effective measure to solve the contradiction between supply and demand of wood raw materials to develop efficient comprehensive utilization of wood and make full use of logging residues, processing residues and inferior wood. [0003] The wood-based panel industry is one of the important industries in my country's national economy. Its products are widely used, mainly used in construction and decoration materials, furniture, wooden floors, packaging materials, automobiles and sports and cultural products. Since wood-based panel products are mainly used for furniture and interior decoration (wo...

Claims

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Application Information

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IPC IPC(8): B27L11/08B27N1/00B27N3/12B27N3/18
CPCB27L11/08B27N1/00B27N3/12B27N3/18
Inventor 陈兴权宋昊
Owner CHANGZHOU UNIV