A treatment method for reducing starch, protein and sugar content in rubber wood

A treatment method and protein technology, applied in wood treatment, wood treatment details, wood impregnation, etc., can solve the problems of lack of mold growth and limited anti-mildew effect, and achieve the effect of enhanced aesthetics, environmentally friendly treatment methods, and enhanced aesthetics

Active Publication Date: 2022-03-25
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Guan Mingjie, Zhou Mingming, Yongcheng (Effect of Ultrasonic on Bamboo Nutrients and Mildew [J]. Bamboo Research Transactions, 2012, 31(3)) Using ultrasonic treatment to reduce bamboo nutrients and prolong the time of mildew, However, the anti-mildew effect is limited, and the growth of mold is only temporarily suppressed; although Chinese patent CN106903767A can greatly reduce nutrients such as starch and soluble sugar in rubber wood, it can prevent rubber tree wood from being eaten by powder beetles to a certain extent, but after treatment Rubber wood still contains more than 2% starch content, etc., and it does not involve the issue of whether it can prevent rubber wood from mildew
The prior art lacks the problem of effectively preventing the growth of mold in rubber wood

Method used

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  • A treatment method for reducing starch, protein and sugar content in rubber wood
  • A treatment method for reducing starch, protein and sugar content in rubber wood
  • A treatment method for reducing starch, protein and sugar content in rubber wood

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A treatment method for reducing starch, protein and sugar content in rubber wood, comprising the steps of:

[0031] (1) Acidification treatment: Add 120kg of oxalic acid solution with a mass concentration of 0.5% to the rubber wood with a thickness of 1.5cm, immerse the rubber wood, adopt a temperature of 20°C, an ultrasonic frequency of 25KHz, and an ultrasonic power of 300W, and perform ultrasonic treatment for 30min. Acidified wood;

[0032] (2) Neutralization treatment: according to the mass ratio of 3:4, 160kg of alkaline nano-sodium silicate solution with a mass concentration of 10% was added to the acidified wood, the pH value was 9, the particle size was 10nm, and the modulus was 2.5. Including ultrasonic treatment in the pre-ultrasonic period and ultrasonic oscillation period, ultrasonic pre-ultrasound: ultrasonic power is 500W, ultrasonic time is 30min; ultrasonic oscillation period: after ultrasonic pre-treatment, adjust the ultrasonic power to 300W, the osci...

Embodiment 2

[0036] A treatment method for reducing starch, protein and sugar content in rubber wood, comprising the steps of:

[0037] (1) Acidification treatment: Add 120 kg of oxalic acid solution with a mass concentration of 5.0% to the rubber wood with a thickness of 8.5 cm, immerse the rubber wood, adopt a temperature of 80 ° C, an ultrasonic frequency of 80 KHz, and an ultrasonic power of 5400 W, and perform ultrasonic treatment for 240 min. Acidified wood;

[0038] (2) Neutralization treatment: according to the mass ratio of 4:5, 150kg of alkaline nano-sodium silicate solution with a mass concentration of 30% was added to the acidified wood, the pH value was 11, the particle size was 30nm, and the modulus was 1.0. Including ultrasonic treatment in the pre-ultrasound and ultrasonic oscillation period, the ultrasonic pre-ultrasound: the ultrasonic power is 1500W, the ultrasonic time is 120min; the ultrasonic oscillation period: after the ultrasonic pre-treatment, the ultrasonic power...

Embodiment 3

[0042] A treatment method for reducing starch, protein and sugar content in rubber wood, comprising the steps of:

[0043] (1) Acidification treatment: Add 100 kg of acetic acid solution with a mass concentration of 3% to the rubber wood with a thickness of 3.5 cm, immerse the rubber wood, adopt a temperature of 40 ° C, an ultrasonic frequency of 45 KHz, an ultrasonic power of 1000 W, and an ultrasonic time of 60 min. Perform ultrasonic treatment to obtain acidified wood;

[0044] (2) Neutralization treatment: according to the mass ratio of 2:3, 150kg of alkaline nano-sodium silicate solution with a mass concentration of 25% was added to the acidified wood, the pH value was 10, the particle size was 20nm, and the modulus was 1.8. Including ultrasonic treatment in pre-ultrasound and ultrasonic oscillation period, pre-ultrasound: ultrasonic power is 1000W, ultrasonic time is 60min; ultrasonic oscillation period: after ultrasonic pre-treatment, adjust ultrasonic power to 800W, os...

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Abstract

The invention relates to a treatment method for reducing the content of starch, protein and sugar in rubber wood, which comprises the following steps: (1) adding a weak acid solution to the rubber wood for ultrasonic acidification treatment; (2) after ultrasonic acidification treatment, adding alkaline Ultrasonic neutralization treatment with nano-sodium silicate solution; (3) stacking and air-drying the rubber wood after ultrasonic neutralization treatment, and performing high-temperature drying treatment when the water content is less than 70-80%; (4) high-temperature drying treatment includes The heating and drying stage and the cooling and humidity regulating stage. By adopting the treatment method of the present invention, the starch, protein and sugar content in the rubber wood can be greatly reduced, and the color of the rubber wood after treatment can be uniform, so that the long-term effect of preventing the rubber wood from mildew and maintaining the natural color of the wood can be obtained. Rubber wood.

Description

technical field [0001] The invention relates to the technical field of preventing and controlling wood mildew, in particular to a treatment method for reducing the content of starch, protein and sugar in rubber wood. Background technique [0002] At present, although conventional drying and high-temperature drying (including thermal modification treatment, that is, carbonization) of rubber wood can reduce the content of starch and sugar in rubber wood, it is an industry consensus that it cannot prevent rubber wood from mildew. Humidity, temperature and the type of nutrients are the most important factors affecting the growth of mold. The growth of mold mainly depends on the protein and low-molecular sugars in wood. Reducing the content of nutrients such as starch, protein and sugar in rubber wood is an effective means to avoid mold in rubber wood. [0003] Guan Mingjie, Zhou Mingming, Yongcheng (Effect of Ultrasonic on Bamboo Nutrients and Mildew [J]. Bamboo Research Transa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K3/02B27K3/00B27K3/20B27K5/04
CPCB27K3/025B27K3/007B27K3/20B27K5/04B27K2240/15B27K2240/20
Inventor 蒋汇川李冠君陆全济李家宁
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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