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Mildew-proof and preservation method for bamboo materials

A bamboo and mildew-proof technology, applied in wood treatment, wood heat treatment, wood processing equipment and other directions, can solve the problems of complex modification steps, harsh processing conditions, large carbon dioxide consumption, etc., and achieve excellent mildew resistance and discoloration prevention. Effect, low production cost, stable effect

Inactive Publication Date: 2020-01-14
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third category is the modification of bamboo, which is mainly composed of various resins with low molecular weight permeated into bamboo and then polymerized. This kind of treatment improves the anti-mold and anti-corrosion performance of bamboo, but the steps of modification are complicated and the cost is high.
However, the supercritical carbon dioxide treatment process conditions are relatively harsh, and the consumption of carbon dioxide is also relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 110 grams of bamboo strips and 1100 mL of water into a pressure-resistant digestion reactor with a volume of 1.2 L (limit temperature: 350° C.), heat at a temperature of 180° C., and process for 60 minutes. The treated bamboo was taken out and dried in an oven at 65°C, and no cracks appeared on the surface of the obtained bamboo.

[0028] The anti-mold performance test was carried out with reference to the national standard GB / T18261-2000 "Test method for the control of wood mold and blue-stain bacteria by anti-fungal agents". The test bacteria were Aspergillus niger, Penicillium citrintim, and green mold ( Trichoderma viride) and Botryodiplodia theobromae. The strains were provided by the Institute of Wood Industry, Chinese Academy of Forestry. After 4 weeks of inoculation of the test piece, the internal and external colors of the test piece without hyphae on the surface are the natural colors after subcritical water treatment. So the victim value is 0.

[0029]...

Embodiment 2

[0032] Add 100 grams of bamboo strips, 2000 mL of water into a pressure-resistant digestion reactor (limit temperature: 350° C.) with a volume of 2 L, heat at 240° C., and process for 120 minutes. After the treatment, the bamboo was taken out and dried in an oven at 85°C, and no cracks appeared on the surface of the obtained bamboo.

[0033] The anti-mold performance test was carried out with reference to the national standard GB / T18261-2000 "Test method for the control of wood mold and blue-stain bacteria by anti-fungal agents". The test bacteria were Aspergillus niger, Penicillium citrintim, and green mold ( Trichoderma viride) and Botryodiplodia theobromae. The strains were provided by the Institute of Wood Industry, Chinese Academy of Forestry. After 4 weeks of inoculation of the test piece, the internal and external colors of the test piece without hyphae on the surface are the natural colors after subcritical water treatment. So the victim value is 0.

[0034] The ant...

Embodiment 3

[0037] Add 100 grams of bamboo strips and 1500 mL of water into a pressure-resistant digestion reactor with a volume of 2 L (limit temperature: 350° C.), heat at 170° C., and process for 30 minutes. After the treatment, the bamboo was taken out and dried in an oven at 50°C, and no cracks appeared on the surface of the obtained bamboo.

[0038] The anti-mold performance test was carried out with reference to the national standard GB / T18261-2000 "Test method for the control of wood mold and blue-stain bacteria by anti-fungal agents". The test bacteria were Aspergillus niger, Penicillium citrintim, and green mold ( Trichoderma viride) and Botryodiplodia theobromae. The strains were provided by the Institute of Wood Industry, Chinese Academy of Forestry. After 4 weeks of inoculation of the test piece, the internal and external colors of the test piece without hyphae on the surface are the natural colors after subcritical water treatment. So the victim value is 0.

[0039] The a...

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PUM

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Abstract

The invention provides a mildew-proof and preservation method for bamboo materials, and belongs to the field of mildew prevention and preservation. According to the invention, compared with the methodfor treating bamboo materials with superheated steam, the method of the invention has the following characteristics that water is changed into subcritical water in a closed container, the starch, thesaccharides and the proteins in the bamboo material can be extracted by the subcritical water, and the extraction efficiency is higher than the extraction efficiency the traditional water and ethanol, so that the content of starch, saccharides, proteins and the like in the bamboo material can be greatly reduced, and the mildew resistance and the preservation of the bamboo material are improved; compared with the supercritical carbon dioxide treatment process, the method of the invention has mild reaction conditions; the treatment raw material is water, the treatment process is simple, and theproduction cost is low; and the effect is stable, and the treated bamboo material does not have chemical agent residue, and are non-toxic and harmless to human bodies.

Description

technical field [0001] The invention relates to the technical field of anti-mildew and anti-corrosion technology, in particular to a method for anti-mold and anti-corrosion of bamboo. Background technique [0002] China is a country with poor wood resources per capita, so bamboo, which is an excellent substitute for wood, has attracted more and more attention. The large-scale utilization of bamboo has effectively alleviated the contradiction between supply and demand of wood, and at the same time played a positive role in my country's economic development and ecological protection. However, in the practical application of bamboo, it is also found that it is more prone to decay and mildew than wood, and bamboo is a difficult material to handle. In order to improve the anti-mildew and anti-corrosion performance of bamboo, many studies have been carried out at home and abroad. However, most of the existing studies have applied wood anti-mildew and anti-corrosion technology, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K5/00B27K5/04
CPCB27K5/0085B27K5/04B27K2240/20
Inventor 潘炘庄晓伟蒋应梯于海霞张文福王进
Owner ZHEJIANG FORESTRY ACAD