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Pretreatment device for improving wood impregnation efficiency and wood impregnation treatment method

A pretreatment device and impregnation treatment technology, applied in wood treatment, wood impregnation, wood treatment details, etc., can solve the problems of danger, complex composition, and high requirements for blasting equipment

Inactive Publication Date: 2015-03-18
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its composition is complex, the cost of equipment is high, and blasting has high requirements for equipment, and it is dangerous, so it is not suitable for popularization and application.

Method used

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  • Pretreatment device for improving wood impregnation efficiency and wood impregnation treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Wet poplar wood segments with a size of 20mm (length) × 20mm (width) × 20mm (thickness) were subjected to ultrasonic pretreatment to open up the moisture channel inside the wood, so as to shorten the time of subsequent wood impregnation treatment and improve the impregnation efficiency.

[0097] In the embodiment of the present invention, except that the thickness of the wood is 2 cm as an example, other woods with a thickness of 0.1-6 cm are also suitable for the present invention, and the thickness of the wood is preferably 1.5-2 cm.

[0098] 1. Open the sealing cover 10 on the top of the wood pretreatment chamber 1, and place the poplar wet wood sample (i.e., the wood 3 to be impregnated) on the partition 9 fixed inside the upper cavity 11 of the wood pretreatment chamber 1 The top of the loading part 4, and set the pressing part 2 on the top of the poplar wet wood sample to prevent the wood from floating or exposing the surface of the pretreatment liquid, so that the...

Embodiment 2

[0111] Except that the pretreated wood is directly soaked in a phenolic resin solution (wood modifier) ​​with a concentration of 25% by mass, no ultrasonic treatment is performed, the wood is taken out after soaking for 1 hour, and the second drying treatment is performed, the rest are the same as Example 1 is the same.

Embodiment 3

[0113] Except that the frequency of the ultrasonic wave in step 3 is 28kHz, the ultrasonic power is 5W per cubic centimeter of wood, that is, the total power of the ultrasonic transducer is adjusted to 40W; the ultrasonic treatment time in step 4 is 90min, that is, the wood In the pretreatment process, the ultrasonic power is 5W per cubic centimeter of wood, and the ultrasonic pretreatment time is 90min, and the rest are the same as in Example 1.

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Abstract

The invention discloses a pretreatment device for improving wood impregnation efficiency and a method for impregnating woods by utilizing the device. The device comprises a wood pretreatment chamber in which a cavity is formed, an ultrasonic treatment system and pretreatment liquid, wherein to-be-treated woods are subjected to ultrasonic pretreatment. The method disclosed by the invention comprises the following steps: pretreating to-be-impregnated woods by using ultrasonic waves under normal pressure, and getting through a liquid moving channel in the woods by utilizing a cavitation effect of the ultrasonic waves, so that the liquid permeability of the to-be-impregnated woods is enhanced, and the effective channel area inside the woods is enlarged; impregnating the woods, and impregnating a wood impregnation modifier into the woods, so that the absorption dose of the impregnated woods is improved, the agent penetration depth is increased, the impregnation period is shortened, and the impregnation effect is improved. The treatment device disclosed by the invention is simple, convenient to operate and is suitable for treating various woods, and process treatment conditions are controllable.

Description

technical field [0001] The invention relates to a wood impregnation treatment equipment and treatment method, in particular to a treatment equipment and treatment method for improving the effect of wood impregnation under normal pressure, belonging to the technical field of wood impregnation treatment, including wood flame-retardant impregnation treatment, wood anti-corrosion impregnation treatment, wood staining impregnation treatment, wood dimensional stability enhancement impregnation treatment, etc. Background technique [0002] Wood impregnation is to impregnate the modifier (such as flame retardant, dyeing agent, preservative, dimensional stabilizer, etc.) It is the most important technological link in the process of wood functional improvement. Correct and reasonable impregnation treatment of wood is not only the key to ensure the quality of wood modification, but also an important means to rationally utilize wood and save costs. [0003] At present, wood impregnati...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/52B27K5/00B27K5/04
CPCB27K3/02B27K3/52B27K5/00B27K5/04
Inventor 赵紫剑何正斌杨飞沙汀鸥伊松林
Owner BEIJING FORESTRY UNIVERSITY
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