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Preparation method of mould proof heat treatment wood and application thereof

A kind of wood and anti-mildew technology, which is applied in the direction of wood heat treatment, wood treatment, impregnated wood, etc., can solve the problems of wood yellowing, etc., and achieve the effect of inhibiting mold and good anti-mildew control effect

Active Publication Date: 2018-06-12
GUANGDONG ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

O. Theander found that heat treatment caused oligosaccharides and carbohydrates in pine wood and spruce wood to accumulate and correlate with the nitrogen content on the wood surface, causing wood yellowing, although Penicillium brevicompactum Growth is closely related to nitrogen content and low-molecular-weight polysaccharide content, but chemical reactions triggered by heat treatment can also produce antibacterial components, such as inhibiting the growth of Aspergillus spp.
However, none of these studies have well addressed the problem of mildew in heat-treated wood

Method used

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  • Preparation method of mould proof heat treatment wood and application thereof
  • Preparation method of mould proof heat treatment wood and application thereof
  • Preparation method of mould proof heat treatment wood and application thereof

Examples

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Embodiment 1

[0041] Preparation of copper-containing compound impregnating solution Dissolve 349.2 g of copper hydroxide in 755.2 g of diethanolamine, add 537.4 g of water to form a cuproammonia solution, and then mix in 358.2 g of PEG200 to form a copper-containing compound impregnating solution. The mass proportions of diethanolamine, copper hydroxide, PEG200 and water are 37.76%, 17.46%, 17.91% and 26.87%.

[0042] Both the dipping solution treatment and the high temperature heat treatment are operated according to the following steps:

[0043] (1) Pretreatment of wood

[0044] (1) Take 25-year-old masson pine wood sapwood to prepare wood samples, the size of which is 50mm (longitudinal) x 20 (chord) mm x 5mm (radial);

[0045] (2) Before the vacuum pressure treatment, first place the wood sample in an oven at 60°C until the quality is constant; then immerse the wood sample in the copper-containing compound impregnation solution, keep the vacuum at -0.09MPa for 30min, and then Take it...

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Abstract

The invention discloses a preparation method of mould proof heat treatment wood and an application thereof. According to the preparation method of mould proof heat treatment wood, copper containing compound impregnation solution manufactured by copper hydroxide, diethanol amine, polyethylene glycol 200 and water to carry out vacuum compression treatment to masson pine wood, traditional wood heat treatment method is combined, and nano-copper is obtained in wood in situ, and the preparation method of mould proof heat treatment wood is economical. The preparation method can avoid human body to directly contact with nanometer materials, and the harm to the human body caused by breathing in is avoided. The copper containing compound impregnation solution is heat-treated over 3h at high temperature of being 220 DEG C, and copper with a particle size being 100nm is produced in wood in situ. The nano copper particle is adsorbed on the surface of a mold cell wall due to charge interaction between cell walls and Cu<2+> is dissolved, the reduction reaction of the mold cell wall is caused, and the purpose of inhibiting mold is achieved. The heat-treated masson pine wood soaked by the copper containing compound impregnation solution can reach more than 90% of the mould proof and preventing efficiency, and therefore better mould proof and preventing efficiency is achieved.

Description

technical field [0001] The invention relates to the technical field of wood protection, in particular to a preparation method and application of mildew-resistant heat-treated wood. Background technique [0002] Heat-treated wood refers to the material obtained by modification treatment in an oxygen-deficient manner within the range of 160°C to 260°C. It is a new type of environmentally friendly material and is widely used in wall panel decoration and other occasions. Heat-treated wood can be roughly divided into three methods: nitrogen, water vapor and oil according to different treatment media. Heat treatment improves the visual performance of wood, improves the dimensional stability and corrosion resistance of wood, but heat-treated wood is more prone to mildew than untreated materials , Preventing mildew can improve the quality and commodity value of materials. [0003] Many experts have conducted research on the mildew resistance of heat-treated wood. Gu Lianbai heat-t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52B27K3/08B27K5/04B27K5/00B27M1/06B27M1/08
CPCB27K3/08B27K3/52B27K5/0085B27K5/04B27K2240/20B27M1/06B27M1/08
Inventor 谢桂军李腊梅李兴伟何雪香曹永建李怡欣马红霞陈利芳王剑菁李万菊王颂
Owner GUANGDONG ACAD OF FORESTRY
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