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Manufacturing method of paulownia wood multilayer flame-retardant fireproof plate

A manufacturing method and technology of fireproof boards, applied in wood impregnation, manufacturing tools, wood treatment, etc., can solve problems such as reduced gluing performance, achieve the effects of reduced production costs, cheap and easy-to-obtain raw materials, and reduced risks

Inactive Publication Date: 2021-12-03
中国林业科学研究院经济林研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the method of flame retardant first and then gluing, while ensuring the flame retardant performance of multi-layer boards, it solves the problem of reducing the gluing performance due to the addition of flame retardants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of a Paulownia wood multi-layer flame retardant fireproof board

[0038] 1. Pretreatment of paulownia veneer: use 0.01% sodium hydroxide NaOH solution for paulownia veneer, and 0.01%

[0039] Sodium dodecylbenzene sulfonate solution to soak the plate for 5min.

[0040] 2. Flame retardant treatment: Take out the veneer and rinse it, add 0.02% boric acid compound flame retardant and soak for 6 hours.

[0041]3. Drying treatment: first air-dried, then enter the drying workshop for drying at a temperature of 35°C until the moisture content is 12%±2% for later use.

[0042] 4. Glue application: glue the paulownia veneer with a glue applicator and arrange the three layers of glued paulownia veneer criss-cross and layered according to the wood texture structure, and glue them together to obtain a paulownia multi-layer board slab; The glue is melamine modified urea-formaldehyde resin, and the amount of glue on one side is 220g / m 2 ;

[0043] 5. Three-stage hot p...

Embodiment 2

[0054] Preparation of a Paulownia wood multi-layer flame retardant fireproof board

[0055] 1. Pretreatment of paulownia veneer: Soak the paulownia veneer with 0.05% sodium hydroxide NaOH solution and 0.02% sodium dodecylbenzenesulfonate solution for 30 minutes.

[0056] 2. Flame retardant treatment: Take out the veneer and rinse it, add 0.3% boric acid compound flame retardant and soak for 15 hours.

[0057] 3. Drying treatment: first air-dried, then enter the drying workshop for drying at a temperature of 45°C until the moisture content is 12%±2% for later use.

[0058] 4. Gluing: Apply glue to the paulownia veneer with a glue applicator, arrange 5 layers of glued paulownia veneers in criss-cross layers according to the wood texture structure, and glue them together to obtain a paulownia multi-layer board slab; The glue is melamine modified urea-formaldehyde resin, and the amount of glue on one side is 220g / m 2 ;

[0059] 5. Three-stage hot pressing: The paulownia slabs t...

Embodiment 3

[0070] Preparation of a Paulownia wood multi-layer flame retardant fireproof board

[0071] 1. Pretreatment of paulownia veneer: Soak the paulownia veneer with 0.1% sodium hydroxide NaOH solution and 0.05% sodium dodecylbenzenesulfonate solution for 60 minutes.

[0072] 2. Flame retardant treatment: Take out the veneer and rinse it, add 0.5% boric acid compound flame retardant and soak for 24 hours.

[0073] 3. Drying treatment: first air-dried, then enter the drying workshop for drying at a temperature of 60°C until the moisture content is 12%±2% for later use.

[0074] 4. Gluing: Apply glue to the paulownia veneer with a glue applicator, arrange 11 layers of glued paulownia veneers in criss-cross layers according to the wood texture structure, and glue them together to obtain a paulownia multi-layer board slab; The glue is melamine modified urea-formaldehyde resin, and the amount of glue on one side is 220g / m 2 ;

[0075] 5. Three-stage hot pressing: The paulownia slabs t...

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Abstract

The invention discloses a manufacturing method of a paulownia wood multilayer flame-retardant fireproof plate. The manufacturing method comprises the following steps that S1, paulownia wood veneers are pretreated; S2, flame retardant treatment is carried out; S3, drying treatment is carried out; S4, gluing is conducted; S5, third-section hot pressing is carried out; S6, heat dissipation and maintenance are carried out; and S7, plate blanks ares subjected to fixed-thickness sanding. The manufacturing method has the advantages that 1, the paulownia wood multilayer flame-retardant fireproof plate obtained by the method has the advantages of light weight, stable size, good sealing performance, oxygen input prevention, combustion supporting and good flame retardance, no toxic and harmful substance release is realized, and the flame retardance can be effectively realized when a fire disaster occurs; 2, the permeability of paulownia wood is improved, so that the flame retardant permeates into the wood, the natural color of the paulownia wood is well maintained, and the wood texture is clear; and 3, a flame retardant is prepared by taking boric acid and borax as main materials and amidinourea phosphate as an adhesion agent and cooperating with phosphoric acid, manganese sulfate and other assistants, the process is simple, the raw materials are cheap and easy to obtain, the total production cost is reduced, the pressure of production enterprises is reduced, and the risk is reduced.

Description

technical field [0001] The invention relates to the technical field of wood-based panels, in particular to a method for manufacturing a Paulownia wood multilayer flame-retardant fireproof board. Background technique [0002] Paulownia is one of the important fast-growing industrial timber tree species in China. It has excellent material, stable size, elegant color and beautiful texture. It is a good material for making wood-based panels. Because of its wide distribution and large planting quantity, it occupies an extremely important position in my country's forestry production. According to statistics, my country's existing paulownia planting area is nearly 40 million mu, about 700 million plants, the timber stock volume reaches 60 million cubic meters, and the annual cutting volume is 4 million cubic meters. The stock volume of tung trees in Henan Province is 24 million cubic meters, and the annual output of timber is 2 million cubic meters. At present, Paulownia is mainl...

Claims

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Application Information

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IPC IPC(8): B27D1/10B27D3/00B27D5/00B27G11/00B27K3/52B27K5/00
CPCB27K3/52B27K5/00B27D1/10B27D3/00B27D5/00B27G11/00B27K2240/30
Inventor 常德龙王彪胡伟华黄文豪张云岭许雅雅
Owner 中国林业科学研究院经济林研究所
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