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Preparation method of multi-layer transparent wood, prepared transparent wood and application of transparent wood

A wood and transparent technology, applied in the field of preparation of multi-layer transparent wood, can solve the problems of limited application and opacity, and achieve the effects of less chemicals, large format, and improved light transmittance

Active Publication Date: 2021-01-15
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention patent with the patent application number CN201910059751.3 in 2019 discloses a one-step synthetic preparation method of light-transmitting wood, which can prepare light-transmitting wood with wood patterns on the basis of retaining lignin. The limitation is that it is basically opaque and both The veneer with a thickness of 0.5mm has limitations in the thickness of the sample, which limits its application in home decoration materials and furniture

Method used

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  • Preparation method of multi-layer transparent wood, prepared transparent wood and application of transparent wood

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Embodiment 1

[0033] The present invention provides a kind of preparation method of multilayer transparent wood, comprises the following steps:

[0034] (1) Drying: Select New Zealand pine wood slices, dry them to absolute dryness at 102°C, soak them in absolute ethanol overnight, and set aside;

[0035] (2) Remove part of the lignin: configure 1wt% sodium hypochlorite solution, and add dropwise glacial acetic acid solution, adjust the pH to 5, get the wood flakes obtained in step (1) and soak them in the above-mentioned solution for heating in a water bath, and the wood flakes are mixed with sodium hypochlorite The bath ratio of the solution is about 1:15, the temperature of the water bath is 90°C, and the time of the water bath is 90 minutes to remove part of the lignin;

[0036] (3) Preparation of polymer mixed solution: use 4wt% NaOH solution to mix with polymer solution and separate, add 0.3wt% azobisisobutyronitrile to the above solution as an initiator, and place the above solution i...

Embodiment 2

[0040] The present invention provides a kind of preparation method of multilayer transparent wood, comprises the following steps:

[0041] (1) Drying: Select birch wood flakes, dry them to absolute dryness at 95°C, and soak them in absolute ethanol overnight for later use;

[0042] (2) Remove part of lignin: configure 0.8wt% sodium hypochlorite solution, and add dropwise glacial acetic acid solution, adjust pH to be 4.6, get the wood flakes made in step (1) and soak in the water bath heating in the above-mentioned solution, wood flakes and The sodium hypochlorite solution bath ratio is about 1:15, the water bath temperature is 90°C, and the water bath time is 110min to remove part of the lignin;

[0043] (3) Preparation of polymer mixed solution: use 6wt% NaOH solution to mix with polymer solution and separate, add 0.35wt% azobisisobutyronitrile to the above solution as an initiator, and place the above solution in a water bath at 75°C Take it out after heating the pre-polyme...

Embodiment 3

[0047] The present invention provides a kind of preparation method of multilayer transparent wood, comprises the following steps:

[0048] (1) Drying: Select oak wood thin slices, dry them to absolute dryness at 105°C, and soak them in absolute ethanol overnight, and set them aside;

[0049] (2) Remove part of the lignin: configure 1wt% sodium hypochlorite solution, and add dropwise glacial acetic acid solution, adjust the pH to 4.6, get the wood flakes obtained in step (1) and soak them in the above-mentioned solution for heating in a water bath, and the wood flakes are mixed with sodium hypochlorite The bath ratio of the solution is about 1:15, the water bath temperature is 85°C, and the water bath time is 100min to remove part of the lignin;

[0050] (3) Preparation of polymer mixed solution: use 4wt% KOH solution to mix with polymer solution and separate, add 0.38wt% azobisisobutyronitrile to the above solution as an initiator, and place the above solution in a water bath ...

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Abstract

The invention provides a preparation method of multi-layer transparent wood, the prepared transparent wood and application of the transparent wood. The multi-layer transparent wood is obtained after different sheet wood is dried, part of lignin is removed, and assemblies of different layers are polymerized through a polymer mixed solution. According to the transparent wood prepared from the wood of different tree species, the light transmittance is improved, most of the texture and color of the wood can be reserved, the mechanical property is excellent, deformation is avoided, the strength ishigh, the breadth is large, light transmittance and transparency of thick plates can be achieved, and the characteristics of attractiveness, solid wood texture, mechanical strength and the like of thewood are reserved.

Description

technical field [0001] The invention relates to the field of new wood technology development and modification, in particular to a preparation method and application of multi-layer transparent wood. Background technique [0002] Due to the unique structure formed by natural growth, wood has excellent mechanical properties and becomes a good structural material. Because of the many advantages of wood, such as low density, high modulus, low thermal conductivity, environmental protection and degradability, etc., it has attracted people to continue to study it. At the same time, researchers have found that the application of wood in some fields because of its inherent properties Restricted, such as opacity, anisotropy, low conductivity, wet expansion and dry shrinkage, etc., it will be replaced by glass, metal, plastic and other materials in some application fields. [0003] In 2016, scholars such as Li published a research paper on transparent wood (LiY, FuQ, YuS, etal. Optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B21/04B32B21/14B32B37/06B32B37/10
CPCB32B37/06B32B37/10B32B21/14B32B21/042
Inventor 吴燕周季纯王雅婧王晶
Owner NANJING FORESTRY UNIV
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