Method for preparing environmentally-friendly plastic wood

An environment-friendly, wood-based technology, applied in the direction of manufacturing tools, wood processing equipment, pressure impregnation, etc., can solve the problems of serious monomer volatilization and low monomer conversion rate, and achieve good dimensional stability, simple operation process, and anti-corrosion performance strong effect
CN101954663AInactive Publication Date: 2011-01-26NORTHEAST FORESTRY UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHEAST FORESTRY UNIVERSITY
Publication Date
2011-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for preparing environmentally-friendly plastic wood and relates to a method for preparing plastic wood. The method solves the problems of high monomer volatility and low monomer conversion rate in the conventional preparation method of the plastic wood. The method comprises the following steps of: I, mixing an organic monomer, an initiator and a polymerization promoter uniformly to obtain impregnation liquid; II, adding wood and the impregnation liquid into a reaction tank and vacuumizing the reaction tank; III, performing pressurization by introducing air; IV, wrapping the wood with aluminium foil, placing the wood at normal temperature and under normal pressure, and then heating the wood to obtain the environmentally-friendly plastic wood. The environmentally-friendly plastic wood prepared by the method has the advantages of high monomer conversion rate of 75 to 88 percent, no volatility and no peculiar smell during later application, compressive strength parallel to grain of 90 to 120 MPa, swelling-resistant rate of 40 to 52 percent after being soaked continuously for 200 hours, high size stability, weight loss rate of 7 to 14 percent after being subjected to fungal erosion for 12 weeks and high corrosion resistance. The environmentally-friendly plastic wood can serve as building and interior decoration materials.
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Description

technical field

[0001] The invention relates to a preparation method of plastic composite wood. Background technique

[0002] Wood is widely used in various fields of production and life, but due to defects such as easy decay and degradation of wood, easy shrinkage and swelling due to deformation and cracking, and poor wood performance of fast-growing tree species, the application of wood is limited. The modification of these woods is usually achieved by the in situ generation of polymers in the porous structure of the wood, resulting in plywood. The existing preparation method of plastic composite wood is to impregnate vinyl and / or acrylic monomers into wood as the main reaction monomer, and obtain plastic composite wood through polymerization reaction, but these monomers have low boiling point and high vapor pressure , high toxicity, serious volatilization in the production process, resulting in environmental pollution and dangerous operation; at the same time, the reacti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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