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A production process of high-strength flame-retardant multi-layer composite wood board

A multi-layer composite and production process technology, applied in the jointing of wooden veneers, wood processing equipment, wood impregnation, etc., to achieve high static bending strength and compressive strength, increased strength and wear resistance, and excellent dimensional stability Effect

Active Publication Date: 2021-01-29
常州常方木业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A floor with high strength can be obtained through the above method, but it uses a large amount of 2D resin, and the wood board will release formaldehyde during production, processing and use, and the flame retardancy of the floor needs to be further improved

Method used

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  • A production process of high-strength flame-retardant multi-layer composite wood board
  • A production process of high-strength flame-retardant multi-layer composite wood board
  • A production process of high-strength flame-retardant multi-layer composite wood board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A production process of a high-strength flame-retardant multilayer composite wood board, comprising the following steps:

[0030] (1) Dry a board with a size of 100cm×12cm×5cm to a moisture content of 5.5%;

[0031] (2) Add water in the reaction kettle, then add 5% sucrose of the total mass of water, 4% 2,4-diacrylamidobenzenesulfonic acid and 4% sodium carbonate, stir and dissolve completely, add wooden boards, at 75 After soaking at ℃ for 1.5h, pressurize. The pressurized pressure is 1.8MPa, and the pressurized time is 25min. After that, the pressure is released, the wooden board is taken out, and cleaned 6 times with clean water;

[0032] The liquid flame retardant consists of the following components by weight: 13% ammonium polyphosphate, 4.5% N-hydroxymethyl-3-(dimethoxyphosphoryl) propionamide, 5% silica sol, 2% boric acid, and the rest The amount is water; the degree of polymerization of ammonium polyphosphate ≥ 30.

[0033] (3) Place the wooden board processed...

Embodiment 2

[0037] A production process of a high-strength flame-retardant multilayer composite wood board, comprising the following steps:

[0038] (1) Drying a board with a size of 100cm×12cm×5cm until the water content reaches 5-8%;

[0039] (2) Add water in the reaction kettle, then add 4% sucrose, 4% 2,4-diacrylamidobenzenesulfonic acid and 3.5% sodium carbonate of the total water mass, stir and dissolve completely, add planks, at 80 After soaking at ℃ for 1 hour, pressurize. The pressurized pressure is 1.8MPa, and the pressurized time is 20min. After that, the pressure is released, the wooden board is taken out, and washed 4 times with clean water;

[0040] The liquid flame retardant consists of the following components by weight percentage: 13% ammonium polyphosphate, 4.5% N-hydroxymethyl-3-(dimethoxyphosphoryl) propionamide, 5% silica sol, 2% boric acid, and the rest The amount is water; the degree of polymerization of ammonium polyphosphate ≥ 30.

[0041] (3) Place the board tr...

Embodiment 3

[0045] A production process of a high-strength flame-retardant multilayer composite wood board, comprising the following steps:

[0046] (1) Dry the plank with a size of 100cm×12cm×5cm until the water content reaches 57%;

[0047] (2) Add water in the reaction kettle, then add 4.5% sucrose of water gross mass, 3.5% 2,4-diacrylamidobenzenesulfonic acid and 4.5% sodium carbonate, stir and dissolve completely, add plank, at 73 After soaking at ℃ for 1.5h, pressurize, the pressurized pressure is 2MPa, and the pressurized time is 22min. After that, the pressure is released, the wooden board is taken out, and washed 4 times with clean water;

[0048] The liquid flame retardant is composed of the following components in weight percentage: 13.5% ammonium polyphosphate, 4.5% N-hydroxymethyl-3-(dimethoxyphosphoryl) propionamide, 6% silica sol, 2% boric acid, and the rest The amount is water; the degree of polymerization of ammonium polyphosphate ≥ 30.

[0049] (3) Place the wooden boa...

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Abstract

The invention provides a production process of a high-strength flame-retardant multilayer composite wood board, which relates to the technical field of composite wood boards. The production process comprises the following steps: (1) drying the wood board; (2) adding water to the reaction kettle, and then Sucrose, 2,4-diacrylamidobenzenesulfonic acid and sodium carbonate, stirred, added to the wooden board, soaked at 70-80°C and then pressurized to 1.5-2MPa; take out the wooden board and clean it; (3) place the wooden board in a liquid resistance (4) Wood boards are glued with flame-retardant adhesives to bond carbon fiber mesh cloth, glass fiber mesh cloth, carbon fiber mesh cloth, and wood boards in sequence. The multi-layer composite wood board prepared by the invention has excellent dimensional stability, is not easy to crack and deform, has high static bending strength and compressive strength, excellent flame retardancy, and almost no formaldehyde release.

Description

technical field [0001] The invention relates to the technical field of composite wood boards, in particular to a production process of high-strength flame-retardant multilayer composite wood boards. Background technique [0002] With the continuous improvement of people's quality of life, the contradiction between the supply and demand of timber has further intensified. my country's forest coverage rate is less than 70% of the world's average level, and the per capita forest area is less than 25% of the world's per capita share. In addition, the voluntary utilization rate of timber in our country is about 60%, and many developed countries in the world are above 80%. Therefore, the comprehensive utilization rate of timber resources needs to be improved. In order to solve the problem of shortage of timber resources, it is an effective method to plant a large number of artificial forests and increase the utilization of fast-growing forest timber. Under the condition of abunda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K3/10B27K3/52B27K5/04B27D1/00
CPCB27D1/00B27K3/0214B27K3/08B27K3/10B27K3/52B27K5/04
Inventor 储成勇
Owner 常州常方木业有限公司