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Wood composite material and preparation method thereof

A composite material and wood technology, which is applied in the field of wood composite materials and its preparation, can solve the problems of high production cost, achieve the effects of low weight gain, simple and easy process flow, and poor wear resistance

Inactive Publication Date: 2018-02-16
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of wood composite material and its preparation method, to solve the technical problem that the production cost of the preparation method in the prior art is higher

Method used

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  • Wood composite material and preparation method thereof
  • Wood composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 As shown, the preparation method provided by Embodiment 1 of the present invention includes steps:

[0042] Step S110, performing hot water extraction treatment on the wooden veneer;

[0043] Step S111, placing the wooden veneer treated in step S110 into a calcium chloride solution for magnetic stirring, and then adding a coupling agent and impregnating it under normal temperature and pressure;

[0044] Step S112, immersing the wood veneer treated in step S111 in a sodium carbonate solution under normal pressure;

[0045] Step S113, placing the wooden veneer treated in step S112 into a polyethylene glycol solution and impregnating it under normal temperature and pressure;

[0046] Step S114, placing the wooden veneer treated in step S113 into an epoxy resin solution and impregnating it under normal pressure;

[0047] In step S115, the wooden veneer treated in step S114 is boiled and desalinated, and then dried.

[0048] In this embodiment, a 1mm thick l...

Embodiment 2

[0058] In Example 2 of the present invention, firstly, the larch veneer with a thickness of about 1.5 mm is subjected to hot water extraction treatment, the experimental temperature is 50° C., and the extraction time is 30 minutes. Specifically, put a larch veneer about 1.5 mm thick in a container filled with distilled water, cover it and place it in a hot water bath at a heating rate of 2 °C / min until the test temperature reaches 50 °C, then keep it warm for 30 min. Dry the sample after taking it out.

[0059] Prepare calcium chloride solution, concentration is 0.3mol / l, under the condition of room temperature, stir 2H with the speed of 500R / MIN with magnetic stirrer. Then add a small amount of coupling agent 3-aminopropyltriethoxysilane, the amount of coupling agent is 0.25g / L, soak at normal temperature and pressure for 24H, take out the test piece and wrap it for 24H. The material selected for wrapping should be light and soft material that avoids chemical reaction with t...

Embodiment 3

[0065] Embodiment 3 of the present invention is still described by taking larch veneer as an example of a log test piece. The log species that can be used in the present invention are not limited to larch, but can also be other types, such as willow, paulownia, fast-growing poplar and the like.

[0066] The thickness of the original wood veneer can be 0.8mm-2.5mm (millimeters), and those skilled in the art can make specific adjustments according to the technical concept of the technical solution of the present invention and actual needs, and the present invention does not limit them one by one.

[0067] First, put the larch veneer in a container filled with distilled water, cover it and put it in a hot water bath, the heating rate is 2°C / min, until the test temperature reaches 70°C, keep it warm for 30min, take out the sample and dry it .

[0068] Prepare a calcium chloride solution with a concentration of 0.4mol / 1. At room temperature, stir with a magnetic stirrer at a spee...

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Abstract

The invention discloses a wood composite material and a preparation method thereof. The preparation method comprises the steps that hot water extraction treatment is conducted on a wood veneer first,the extraction temperature is 30 DEG C-70 DEG C, the extraction time is 25-35 min, and the treated wood veneer is placed into 0.2 mol / l-0.4 mol / l of calcium chloride solution for magnetic stirring, then 0.25g / L-0.5g / L of a coupling agent is added for dipping under the ambient temperature and the normal pressure; then the wood veneer is placed into the sodium carbonate solution for dipping under the normal pressure condition; then the wood veneer is placed into 20%-40% of polyethylene glycol solution and 15%-25% of epoxy resin solution for dipping under the normal pressure condition; and the wood veneer is subjected to boiled desalting treatment and then dried. According to the wood composite material prepared through the preparation method, the weight increase rate is increased remarkably,and the abrasion resistance is increased obviously.

Description

technical field [0001] The invention relates to the technical field of wood composite materials, in particular to a wood composite material and a preparation method thereof. Background technique [0002] Wood is one of the most typical biomass materials in nature, widely used in construction, decoration and furniture manufacturing and other fields. my country's current non-renewable resources are increasingly depleted, and high-quality wood resources are seriously scarce. However, most types of raw wood have limited application fields due to their structural characteristics, poor water resistance and abrasion resistance, and low strength and hardness. Those skilled in the art have found through research that the modification of raw wood can effectively improve the relevant mechanical properties of raw wood. Among them, the wood composite board modified by calcium carbonate can improve its strength, density, hardness and wear resistance. promoted. Effective calcium carbonat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/00B27K3/18B27K3/20B27K3/36B27K3/34B27K5/00
CPCB27K3/005B27K3/0207B27K3/025B27K3/18B27K3/20B27K3/343B27K3/36B27K5/0085B27K2240/70
Inventor 朱晓冬刘玉
Owner NORTHEAST FORESTRY UNIVERSITY
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