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Wood modifying agent, wood modifying liquid and its application and wood modification treatment method

A wood modification and treatment method technology, which is applied in the field of wood modifiers and wood modification treatments, can solve the problems of low crosslinking degree of modifier polymers and poor mechanical properties of modified materials, and achieve better mechanical properties. Excellent, improved physical and mechanical properties, high mechanical properties

Active Publication Date: 2021-10-15
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of formaldehyde release in existing modified wood, low degree of crosslinking of modifier polymers, and poor mechanical properties of modified materials, the invention provides a wood modifier, a wood modification liquid and its Applications and treatment methods for wood modification

Method used

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  • Wood modifying agent, wood modifying liquid and its application and wood modification treatment method
  • Wood modifying agent, wood modifying liquid and its application and wood modification treatment method
  • Wood modifying agent, wood modifying liquid and its application and wood modification treatment method

Examples

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Embodiment 1

[0085] This embodiment is used to illustrate the wood modification liquid of the present invention and the method for wood modification

[0086] (1) Prepare wood modification solution:

[0087] Add methyl methacrylate, 2-hydroxyethyl methacrylate, N-(methoxymethyl)acrylamide and allyl shrink Glycerin ether, stirred evenly to prepare a homogeneous solution, then respectively added calcium chloride / hydrogen peroxide composite initiation system (initiator), cobalt naphthenate (accelerator) and ethylene glycol dimethacrylate (crosslinking agent) and stirred evenly , to prepare wood modification solution.

[0088] Wherein, based on the total weight of the wood modification liquid, the content of methyl methacrylate is 32.5% by weight, the content of 2-hydroxyethyl methacrylate is 5% by weight, and N-(methoxymethyl) The content of acrylamide is 4% by weight, the content of allyl glycidyl ether is 5% by weight, the content of initiator is 0.5% by weight, the content of accelerator ...

Embodiment 2

[0094] This embodiment is used to illustrate the wood modification liquid of the present invention and the method for wood modification

[0095] (1) Preparation of wood modification liquid: According to the method described in Example 1, a wood modification liquid was prepared. Wherein, based on the total weight of the wood modification liquid, the content of methacrylic acid is 30% by weight, the content of 2-hydroxypropyl methacrylate is 6% by weight, and N-(isobutoxymethyl)propylene The content of amide is 6% by weight, the content of glycidyl methacrylate is 5% by weight, the content of initiator (ammonium persulfate) is 0.25% by weight, and the content of accelerator (cobalt naphthenate) is 0.75% by weight, The content of the crosslinking agent (maleic anhydride) is 2% by weight, and the balance is an aqueous solution of ethanol (ethanol: water=0.1:1, weight ratio);

[0096] (2) place the wood (radiata pine) to be treated in the vacuum pressure equipment, then inject the...

Embodiment 3

[0099] This embodiment is used to illustrate the wood modifier of the present invention and the method for wood modification

[0100] (1) Preparation of wood modifier:

[0101] Take ethyl methacrylate, 2-hydroxypropyl methacrylate, N-(carboxymethoxymethyl) acrylamide, glycidyl acrylate, potassium persulfate, cobalt naphthenate and maleic anhydride to prepare wood Modifier. Wherein, based on the total weight of the wood modifier, the content of ethyl methacrylate is 68% by weight, the content of 2-hydroxypropyl methacrylate is 8% by weight, and N-(carboxymethoxymethyl) The content of acrylamide was 9% by weight, the content of glycidyl acrylate was 8% by weight, the content of initiator (potassium persulfate) was 1.5% by weight, and the content of accelerator (cobalt naphthenate) was 0.1% by weight. The content of the coupling agent (maleic anhydride) was 5.4% by weight.

[0102] (2) Mix the wood modifying agent obtained in step (1) with an aqueous solution of ethanol (ethan...

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Abstract

The invention relates to the field of wood modification, in particular to a wood modifier, a wood modification liquid, an application thereof, and a wood modification treatment method. The wood modifier contains methacrylic monomers, crosslinking monomers and initiators; wherein the crosslinking monomers are selected from the group consisting of hydroxyalkyl methacrylate, N-substituted acrylamide and epoxy-type acrylic acid One or more than two kinds of esters, and the substituents in the N-substituted acrylamide are alkoxy or carboxy-substituted alkoxy. The wood modifying liquid comprises the above-mentioned wood modifying agent and solvent. Using the modifier and modifying liquid of the present invention in wood modification treatment does not release formaldehyde during the process, and makes the mechanical properties of the modified wood better, especially significantly improves the hardness and elasticity of the modified wood modulus and flexural strength.

Description

technical field [0001] The invention relates to the field of wood modification, in particular to a wood modifier, a wood modification liquid, an application thereof, and a wood modification treatment method. Background technique [0002] Due to the ban on logging of natural commercial forests and the tightening of international timber import channels, artificial forests have gradually become the main raw materials of my country's timber industry. However, artificial forest wood is soft, low in strength and easy to deform, which is difficult to meet the needs of high-end wood products. [0003] Modification of wood can improve its mechanical strength, dimensional stability and durability, expand the application range of fast-growing wood, and increase its added value. However, most of the current wood modification reagents are aldehyde-containing (formaldehyde) resins, which are modified by physical filling of the cell cavity. The interface between the modifier and wood is w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/50B27K3/08
CPCB27K3/08B27K3/50B27K2240/00
Inventor 李改云郭登康储富祥杨昇黄耀葛
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY