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A method for strengthening wood in solid wood with small molecule phenolic monomer

A small molecule, phenolic technology, applied in the field of solid wood filling reinforcement and high value-added utilization, to achieve the effects of high impregnation resistance, high viscosity, high added value and market prospects

Active Publication Date: 2016-08-10
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, although wood-like materials can be used instead of wood to a certain extent, they are still inferior to real wood in some aspects, such as the natural texture of wood, such as the precious characteristics of some special wood, so it is still necessary to modify wood. is an indispensable technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) 100 parts of phenol, 40 parts of 36~38% formaldehyde, 15 parts of concentrated hydrochloric acid, 10 parts of surfactant, 40 parts of ammonium polyphosphate, 10 parts of hematoxylin pigment, accurately weigh each part of the modified liquid according to the formula components, and stir well to mix evenly.

[0035] (2) Saw poplar logs into slabs of 910mm×123mm×18mm according to the specifications of solid wood flooring, and dry them in a drying kiln according to poplar drying standards until the moisture content is lower than 5%;

[0036] (3) Put the poplar floor slab into the vacuum high-pressure impregnation tank; turn on the vacuum pump to evacuate, and keep the pressure in the tank at 0.01MPa for 30 minutes; open the liquid inlet valve to pump the modifier into the impregnation tank to make the liquid level Completely cover poplar floor slabs and impregnate for 2.0h under the pressure of 1.8MPa;

[0037] (4) Open the liquid discharge valve, send the processing h...

Embodiment 2

[0041] (1) 100 parts of phenol, 120 parts of 36~38% formaldehyde, 18 parts of sodium hydroxide, 8 parts of surfactant, 80 parts of water glass, 20 parts of iron oxide red pigment, 80 parts of water, and accurately weigh the modification according to the formula Each component of the liquid, and stir well, mix well;

[0042] (2) Saw poplar logs into slabs of 910mm×123mm×18mm according to the specifications of solid wood flooring, and dry them in a drying kiln according to poplar drying standards until the moisture content is lower than 5%;

[0043] (3) Put the poplar floor slab into the vacuum high-pressure impregnation tank; turn on the vacuum pump to evacuate, and the pressure in the tank is 0.01MPa for 60 minutes; open the liquid inlet valve to pump the modifier into the impregnation tank to make the liquid level Completely cover poplar floor slabs and impregnate for 4.0h under the pressure of 1.8MPa;

[0044] (4) Open the liquid discharge valve, send the processing hydraul...

Embodiment 3

[0048] (1) 100 parts of phenol, 120 parts of 36~38% formaldehyde, 40 parts of concentrated ammonia water, 8 parts of surfactant, 80 parts of water glass, 20 parts of iron oxide red pigment, 30 parts of water, and accurately weigh the modified liquid according to the formula each component, and fully stir, mix evenly;

[0049] (2) Saw poplar logs into 2400mm×400mm×50mm poplar sawn timber, and dry them in a drying kiln according to poplar drying standards until the moisture content is lower than 5%;

[0050] (3) Put the poplar sawn timber into the vacuum high-pressure impregnation tank; turn on the vacuum pump to evacuate, and the pressure in the tank is 0.01MPa for 60 minutes; open the liquid inlet valve to pump the modifier into the impregnation tank to make the liquid level completely Cover poplar sawn timber, impregnate for 6.0h under the pressure of 1.8MPa;

[0051] (4) Open the liquid discharge valve, send the processing hydraulic pressure back to the liquid storage tank,...

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Abstract

A method for strengthening wood with small molecular phenolic monomers in solid wood. It is a method of in-situ polymerization of small molecular phenolic monomers in solid wood to form phenolic resins to strengthen wood. First, uniformly mixed phenolic monomers are mixed by vacuum high pressure technology. The body, formaldehyde monomer and catalyst are immersed in the interior of the wood; then, after aging and homogeneity, the polymerization reaction is initiated by heating or microwave, so that the phenol monomer and formaldehyde monomer are polymerized in situ in the wood channel to form a phenolic resin. The phenolic resin filling the wood channels plays a compact and strengthening effect on the wood, which can improve the compressive strength, wear resistance, water resistance, dimensional stability and processability of the wood, increase the texture of the wood, and reduce the cracking and deformation of the wood.

Description

technical field [0001] The invention is a method for preparing phenolic resin reinforced wood by in-situ polymerization of small molecule phenolic monomers in solid wood, which belongs to the technical field of wood strengthening functional improvement and high-value utilization, and particularly relates to solid wood such as logs, sawn timber, and boards Filling reinforcement and high value-added utilization. Background technique [0002] Wooden materials are one of the four major building decoration materials. Wooden materials have natural texture and aesthetic feeling. Since ancient times, people have cherished the characteristics of color, fragrance, quality, and grain of wood, and have widely used them in construction, furniture, etc. working and living environment. It is non-toxic, harmless, and is the only "green material" that is renewable and sustainable. With the improvement of people's living standards, the demand for high-grade precious wood is increasing day b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/08B27K3/15B27K3/52C08G8/10
Inventor 胡云楚陈旬袁利萍田梁材王洁吴义强
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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