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Method for improving performance of superhigh temperature heat-treated wood

A technology of warm heat treatment and wood, applied in impregnation of wood, wood impregnation, wood processing utensils, etc., can solve the problems of high cost of chemicals and processes, complicated treatment process, etc., and achieve the goal of improving application value, simple process, and reducing strength loss Effect

Active Publication Date: 2010-07-14
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the treatment process of this method is more complicated, and the cost of the medicament and process used is higher.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0016] The sapwood of 30-year-old rubber wood (Hevea brasiliensis) was processed into a specimen of 640mm×60mm×30mm (L×R×T). %. The impregnation process is as follows: pre-vacuum: -0.08MPa, 20min; pressurization: 1.2MPa, 40min; post-vacuum: -0.08MPa, 10min. Air dry for a week after treatment. Take the sapwood of the same tree and process it into a 640mm×60mm×30mm (L×R×T) specimen as a control.

[0017] The pretreated specimens and control specimens were placed under the same process conditions for heat treatment. In this embodiment, water vapor is used as heat transfer medium and shielding gas. The heat treatment temperature is 190°C, and the treatment time is 4h. Humidity adjustment is performed after heat treatment to keep the moisture content consistent among different specimens.

[0018] Process the heat-treated wood into a standard radial and chord test piece of 300mm×20mm×20mm (L×R×T), refer to the national standard GB1936.1-91 wood flexural strength test method and...

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Abstract

The invention belongs to the field of wood modification, in particular to a method for improving the performance of superhigh temperature heat-treated wood. In the method, boride is selected to prepare aqueous solution; then, the wood is impregnated with the boride aqueous solution to ensure that the drug-loading rate of the boride in the wood is between 2.8 and 12kg / m3; after air drying, the wood is dried and heated to realize improvement of the performance of the superhigh temperature heat-treated wood. The method has simple process and low cost, and pretreats the wood by using the boride before heat treatment so as to play roles in protecting the wood, reducing degradation of hemicellulose and the like, avoiding or reducing strength loss of the wood in high temperature heat treatment, making up the defect that the heat-treated wood does not resist worm damage, and improving the application value of the heat-treated wood.

Description

technical field [0001] The invention belongs to the field of wood modification, in particular to a method for improving the properties of ultra-high temperature heat-treated wood. Background technique [0002] Wood is loved by people for its unique color, texture, texture, fragrance and other characteristics, and it is widely used in daily life and production and construction. However, as a kind of biomass material, wood is easily attacked by various biodegradation factors and naturally degrades, reducing its utilization value. In order to prolong the service life of wood, people take various measures to treat wood to enhance the performance of wood against decay, moth, mildew, discoloration and other biological decay factors. At present, the most commonly used treatment method is to use specially prepared preservatives to treat wood, and through the action of chemicals to prevent decay fungi, molds, moths, and discoloration fungi from invading wood. [0003] With the emph...

Claims

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Application Information

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IPC IPC(8): B27K3/16B27K3/12
Inventor 李家宁李晓文林位夫李民秦韶山谢贵水安锋黄华孙罗微
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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