Willow densification processing technology

A processing and densification technology, applied in wood processing appliances, wood compression, impregnating wood, etc., can solve the problems of willow that cannot be directly used, poor dimensional stability, and loose wood, and achieves low recovery rate and improved strength value. , the effect of good compression

Inactive Publication Date: 2017-11-17
阜南县创发工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Willow is the most important fast-growing tree species in the Central Plains. Although the artificial willow forest has the characteristics of fast growth and high yield, its woodiness is loose, its moisture content is high, and its dimensional stability is not good. Various treatments have reached a consensus in the academic circles, among which compressing willow to improve its physical and mechanical properties is one of the common methods, mainly using low-molecular PF, MF and other resin treatments or through cross-linking reactions to improve wood quality. Density, strength and deformation of the permanent fixation, currently common is to use modified melamine resin as the filling material, after filling the willow wood under certain conditions, and then carry out thermal compression treatment on the filled wood through a special process, to achieve improvement Strength and dimensional stability of willow wood. Although this treatment process can improve the strength and stability of willow wood, common resin fillers such as modified melamine resin tend to emit chemical substances that are harmful to the human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of willow densification treatment process, the treatment steps are as follows:

[0019] (1) Soak the glutinous rice in water for 10 hours, put it into a high-pressure cooking pot, and steam the glutinous rice at a cooking temperature of 100°C and a steam pressure of 0.6Kg for 50 minutes;

[0020] (2) Mix the steamed glutinous rice and water at a volume ratio of 1:3.5, grind and disperse at a high speed, and filter to obtain the filtrate. The filtrate is electrolyzed at a stirring rate of 30r / min for 20 minutes, and the electrolysis voltage is 50V. The current is 1.8A, and the electrolyte is obtained;

[0021] (3) The willow wood to be treated is sent into the vacuum heating chamber, and treated at 30°C until the center temperature of the willow wood reaches 30°C;

[0022] (4) Fully immerse the willow wood in the electrolyte solution for 70 minutes;

[0023] (5) After the willow wood is dried at 38°C and enters the stage of slowing down drying, pre...

Embodiment 2

[0025] Embodiment 2: a kind of willow densification treatment process, the treatment steps are as follows:

[0026] (1) Soak the glutinous rice in water for 12 hours, put it into a high-pressure cooking pot, and steam the glutinous rice at a cooking temperature of 105°C and a steam pressure of 0.65Kg for 55 minutes;

[0027] (2) Mix the steamed glutinous rice and water at a volume ratio of 1:4, grind and disperse at a high speed, and filter to obtain the filtrate. The filtrate is electrolyzed at a stirring rate of 40r / min for 25 minutes, and the electrolysis voltage is 55V. The current is 2A, and the electrolyte is obtained;

[0028] (3) The willow wood to be treated is sent into the vacuum heating chamber, and treated at 33°C until the center temperature of the willow wood reaches 33°C;

[0029] (4) Fully immerse the willow wood in the electrolyte solution for 80 minutes;

[0030] (5) After the willow wood is dried at 40°C and enters the stage of slowing down drying, pressu...

Embodiment 3

[0032] Embodiment 3: a kind of willow densification treatment process, the treatment steps are as follows:

[0033] (1) Soak the glutinous rice in water for 11 hours, put it into a high-pressure cooking pot, and steam the glutinous rice at a cooking temperature of 102°C and a steam pressure of 0.63Kg for 52 minutes;

[0034] (2) Mix the steamed glutinous rice and water at a volume ratio of 1:3.8, grind and disperse at a high speed, and filter to obtain the filtrate. The filtrate is electrolyzed at a stirring rate of 32r / min for 24 minutes, and the electrolysis voltage is 52V. The current is 1.9A, and the electrolyte is obtained;

[0035] (3) The willow wood to be treated is sent into the vacuum heating chamber, and treated at 32°C until the center temperature of the willow wood reaches 32°C;

[0036] (4) Fully immerse the willow wood in the electrolyte solution for 75 minutes;

[0037] (5) After the willow wood is dried at 30°C and enters the stage of slowing down drying, pr...

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Abstract

The invention relates to the technical field of wood processing, in particular to a willow densification processing technology. The willow densification processing technology comprises the following processing steps that after sticky rice is soaked in water, the sticky rice is fed into a high-pressure cooker for braising and steaming, the braised and steamed sticky rice is evenly mixed with water, high-speed grinding dispersion and filtration are performed to obtain filtrate, electrolysis is performed to obtain electrolyte, willows to be processed are fed into a vacuum heating chamber to be processed and fully immersed in the electrolyte, soaking treatment is performed, the willows are dried at the temperature of 38-40 DEG C and undergo a reduced-speed drying stage, then densification is performed, dirt left on the willow surfaces are removed, and densified willows are obtained. The modified raw material adopted by the willow densification processing technology are prepared by using the sticky rice as the raw material, is low in cost and does not have pollution, the strength value of willows obtained through densification processing is remarkably improved, the willows have good compressibility, the recovery rate after compression is low, and the willows have higher strength and stability.

Description

Technical field [0001] The invention relates to the technical field of wood processing, and in particular to a willow wood densification treatment technology. Background technique [0002] Willow is the most important fast-growing tree species in the Central Plains. Although the artificial willow forest has the characteristics of fast growth and high yield, its wood is loose, has high moisture content, and has poor dimensional stability. As a result, willow cannot be directly used at present. In order to improve the physical properties of willow, willow is treated There has been a consensus in the academic community about various treatments. Among them, compression treatment of willow wood to improve its physical and mechanical properties is one of the common methods. It mainly uses low-molecular PF, MF and other resin treatments or improves the wood through cross-linking reactions and other treatments. To permanently fix the density, strength and deformation of the willow, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27M1/02
CPCB27K3/52B27M1/02
Inventor 刘维军
Owner 阜南县创发工艺品有限公司
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