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Transparent wood with optical regulation and control function and preparation method thereof

A technology for optical control and transparent wood, which is used in wood treatment, impregnating wood, manufacturing tools, etc., to achieve the effect of low equipment requirements, good transparency and high strength

Active Publication Date: 2018-09-14
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently reported transparent wood materials only have the advantages of high strength, high transparency and high haze, and the functionalized products of transparent wood materials still need further research and development.

Method used

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  • Transparent wood with optical regulation and control function and preparation method thereof
  • Transparent wood with optical regulation and control function and preparation method thereof
  • Transparent wood with optical regulation and control function and preparation method thereof

Examples

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preparation example Construction

[0034] Preparation of delignified wood substrates. The invention removes the lignin in the wood matrix through chemical treatment, and then obtains the delignified wood matrix after drying. Alternatively, the lignin in the wood matrix is ​​firstly removed by chemical treatment, and then undergoes hydrophobic and lipophilic modification treatment and drying treatment to obtain the delignified wood matrix. The preparation method of the delignified wood substrate in the present invention includes but not limited to the above two methods.

[0035] The lignin in the wood matrix is ​​removed by chemical treatment to obtain a delignified wood matrix. Specifically, the lignin in the wood is removed by soaking in a chemical reagent, that is, the wood substrate is placed in a chemical reagent and reacted at 25-100° C. for 1-10 hours. The chemical reagent used can be selected from at least one of hydrogen peroxide, a mixed solution of sodium hypochlorite and sodium hydroxide, or perchl...

Embodiment 1

[0044] Soak 3 cm long, 3 cm wide, and 0.5 cm thick beech wood in 80° C. and 30 wt % hydrogen peroxide solution for 4 hours. The obtained delignified wood is cleaned with ethanol, and soaked in n-octadecyl mercaptan ethanol solution (concentration of n-octadecyl mercaptan 0.05mol / L) to react for 12h, and dried in a vacuum desiccator (vacuum drying The vacuum degree of the box is 200Pa, the drying temperature is 80°C, and the drying time is 20h). Immerse the delignified wood after hydrophobic, lipophilic and drying treatment in methyl methacrylate solution dispersed with 0.03wt% cesium tungstate nanoparticles (particle size: 10-50nm) and pressurize to 3MPa for 15min, then pump Vacuum to 80kPa and maintain for 2h and return to normal pressure. The obtained composite was heated and cured at 60° C. for 12 hours to finally obtain a transparent wood material with near-infrared shielding function, the content of inorganic particles with optical regulation function in the transparent ...

Embodiment 2

[0046] Willow with a length of 3 cm, a width of 3 cm and a thickness of 0.5 cm was soaked in a mixed solution of 5 wt % sodium hypochlorite and 20 wt % sodium hydroxide at 100 ° C for 5 h. The obtained delignified wood is cleaned with ethanol, and soaked in n-octadecyl mercaptan ethanol solution (concentration of n-octadecyl mercaptan 0.05mol / L) to react for 12h, and dried in a vacuum desiccator (vacuum drying The vacuum degree of the box is 200Pa, the drying temperature is 80°C, and the drying time is 20h). The delignified wood (delignified wood substrate) after hydrophobic, lipophilic and dry treatment is immersed in an epoxy resin solution (the monomer of which is bisphenol A glycidyl ether) was pressurized to 3MPa and kept for 15min, then vacuumed to 80kPa and kept for 2h and returned to normal pressure. The obtained composite was heated and cured at 60° C. for 12 hours to finally obtain a transparent wood material with an intelligent temperature regulation function. The ...

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Abstract

The invention relates to a transparent wood with an optical regulation and control function and a preparation method thereof. The transparent wood comprises a transparent wood substrate and inorganicparticles with an optical regulation and control function uniformly dispersed in the transparent wood substrate, wherein the inorganic particles with the optical regulation and control function are selected from at least one of nano silver, nano vanadium oxide, nano cesium tungstate, nano ATO and nano ITO. According to the transparent wood provided by the invention, the characteristic of high hazeof the transparent wood is utilized, the propagation channel of light in the transparent wood matrix is increased, and the functional benefit of inorganic nano-particles with the same concentration is improved.

Description

technical field [0001] The invention relates to a preparation process of a composite material, and specifically belongs to the technical field of organic-inorganic composite. Background technique [0002] There are many types of plants, and the types of wood are also varied. Wood has been used as a building material or fuel for thousands of years. But when it comes to wood composites, research is just getting started. Wood composite materials can not only make low-quality wood, small-diameter wood, waste wood and agricultural residues be used efficiently, but also have little-known ecological effects ([1] Li Shunlong. Research on forest carbon sinks. Harbin: Northeast Forestry University Press, 2006). [0003] In Japan in 2007, Professor Yano of the University of Tokyo made transparent high-strength paper in a laboratory environment by combining wood fibers and polymers. This technology is very similar to the papermaking process. The visible light of the transparent paper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/08B27K3/15B27K3/02B27K3/52B27K5/00
CPCB27K3/0207B27K3/0214B27K3/08B27K3/15B27K3/52B27K5/0055
Inventor 高彦峰余子涯
Owner SHANGHAI UNIV
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