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Preparing method for transparent temperature-sensing color-changing wood

A temperature-sensitive discoloration, wood technology, applied in wood treatment, wood heating, wood impregnation, etc., to achieve the effect of increased flexural strength, high transparency, and increased porosity

Inactive Publication Date: 2017-11-24
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most important thing is that it can add various modifiers or functional particles in the preparation process to enrich its functionality. At present, the preparation of transparent wood and other related research are in the preliminary stage, and there is no report of transparent temperature-sensitive discoloration wood. Transparent temperature-sensitive The preparation technology and utilization potential of discolored wood need to be tapped urgently

Method used

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  • Preparing method for transparent temperature-sensing color-changing wood
  • Preparing method for transparent temperature-sensing color-changing wood
  • Preparing method for transparent temperature-sensing color-changing wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Experimental materials: 1.5mm×50mm×20mm poplar test piece, epoxy resin AB glue (Hubei Yongbang Composite Material Co., Ltd.), sodium hydroxide (analytical grade), sodium sulfite (analytical grade), sodium chlorite (analysis Pure), dark blue thermochromic powder with a color change temperature of 28°C (Shenzhen Qianse Change New Material Co., Ltd.).

[0037] Experimental steps:

[0038] 1. Put the poplar wood specimen into NaOH (2.5mol / L) and Na 2 SO 3 In the mixed solution of (0.4mol / L), change the drug solution every 4 hours, boil it for 24 hours, and then boil it with deionized water for 6 hours to remove the residual drug solution.

[0039] 2. Place the test piece in a sodium chlorite solution with a mass fraction of 1%, and adjust the pH to 4.5 with acetic acid, and then heat it in a water bath at 80°C until the test piece becomes uniform white. After washing with deionized water, store in alcohol.

[0040] 3. Disperse 0.5% of the color-changing powder evenly into the epox...

Embodiment 2

[0049] Experimental materials: 1.5mm×50mm×30mm poplar test piece, epoxy resin AB glue (Hubei Yongbang Composite Material Co., Ltd.), sodium hydroxide (analytical grade), sodium sulfite (analytical grade), sodium chlorite (analysis Pure), dark blue thermochromic powder with a color change temperature of 28°C (Shenzhen Qianse Change New Material Co., Ltd.).

[0050] Experimental steps:

[0051] 1. Put the poplar wood specimen into NaOH (2.5mol / L) and Na 2 SO 3 In the (0.4mol / L) mixed solution, change the liquid medicine every 4 hours, boil it for 12 hours, and then boil it with deionized water for 2 hours to remove the residual liquid medicine.

[0052] 2. Place the test piece in a sodium chlorite solution with a mass fraction of 1%, and adjust the pH to 4.5 with acetic acid, and then heat it in a water bath at 80°C until the test piece becomes uniform white. After washing with deionized water, store in alcohol.

[0053] 3. Disperse 1% of the color-changing powder evenly into the epoxy...

Embodiment 3

[0061] Example 3 Comparative Example

[0062] Experimental materials: 1.5mm×50mm×20mm poplar test piece, epoxy resin AB glue (Hubei Yongbang Composite Material Co., Ltd.), sodium chlorite (analytical pure), dark blue thermochromic powder with a color change temperature of 28℃ (Shenzhen Qianse Change New Material Co., Ltd.).

[0063] Experimental steps:

[0064] 1. Put the poplar wood sample into a sodium chlorite solution with a mass fraction of 1%, and adjust the pH to 4.5 with acetic acid, and then heat it in a water bath at 80°C until the sample becomes uniform white. After washing with deionized water, store in alcohol.

[0065] 2. Disperse 0.5% discoloration powder uniformly into epoxy resin, immerse the test piece in the resin, and vacuum impregnate for about 50 minutes.

[0066] 3. Take out the test piece and place it in an oven at 40°C until fully cured.

[0067] In this example, the step of removing lignin was omitted. As a result, it was found that although the test piece cou...

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Abstract

The invention provides a preparing method for a transparent temperature-sensing color-changing wood. The preparing method comprises the following steps that the lignin is removed from the wood, the wood is bleached, and resin containing color-changing powder is immerged and injected into the wood. The particle diameter of the color-changing powder is about 1-10[mu]m, the mass percent content of the color-changing powder in the resin is 0.5-2%. The transparent temperature-sensing color-changing wood obtained through the method has good mechanical strength, further has high transparency and a color changing function, can be applied in multi-field instead of common glass, further can be used as indoor decoration or furniture materials, further can be used for preparing temperature-sensing color-changing ornaments, water cups and the like, and has broad application prospects.

Description

Technical field [0001] The invention relates to the technical field of wood processing, in particular to a method for preparing transparent temperature-sensitive discoloration wood. Background technique [0002] Wood is a natural renewable polymer material with a porous structure composed of the three main components of cellulose, hemicellulose and lignin. Among them, cellulose is widely used as reinforcement materials, template materials, etc. due to its good mechanical properties; lignin has rich functional groups, which can be used to prepare wood or construction adhesives, and at the same time, it can be used to make bio-oil through liquefaction and degradation. And phenolic compounds. Utilizing the porous properties of wood, impregnating modifiers into wood can obtain high-performance or multifunctional wood composite materials, such as acetylated wood, magnetic wood, wood ceramics and so on. [0003] Wood shows different colors due to the presence of pigments and conjugated...

Claims

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Application Information

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IPC IPC(8): B27K5/02B27K3/32B27K3/00B27K3/15B27K5/00B27K3/08
CPCB27K5/02B27K3/005B27K3/08B27K3/15B27K3/32B27K5/001
Inventor 曹金珍郭玺刘嘉慧王望
Owner BEIJING FORESTRY UNIVERSITY
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