Title:
METHOD FOR PREPARING TRANSPARENT WOOD MATERIAL BY MEANS OF ORGANIC SOLVENT, AND TRANSPARENT WOOD MATERIAL PREPARED THEREBY AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/224279
Kind Code:
A1
Abstract:
Disclosed are a method for preparing a transparent wood material by means of an organic solvent, and a transparent wood material prepared thereby and the use thereof. The specific preparation steps are as follows: first drying a veneer sample at 105 ± 5ºC, then placing same into an aqueous ethanol solution, carrying out extraction on the dried veneer sample under a condition of 85 - 95ºC, and then washing same with an aqueous ethanol solution; further carrying out retention bleaching on same using an aqueous hydrogen peroxide solution; and finally filling holes and voids of the wood material with a polymer matrix to obtain a light-permeable wood-based material. By using ethanol to dissolve lignin at a low temperature, the original structure of the wood material can be kept intact, the removed lignin is closer to the original lignin, and the prepared transparent wood material has a higher optical transmissivity.The use of a chlorine-free method to remove lignin is environmentally friendly, and, by means of distillation, all of the ethanol can be recovered, which reduces the cost. The prepared transparent wood material can be applied to light-permeable buildings and transparent solar cell windows.
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Inventors:
LI JING (CN)
DING MINGQI (CN)
LIAO CHANGLYU (CN)
ZHANG HUI (CN)
DING MINGQI (CN)
LIAO CHANGLYU (CN)
ZHANG HUI (CN)
Application Number:
PCT/CN2019/129646
Publication Date:
November 12, 2020
Filing Date:
December 28, 2019
Export Citation:
Assignee:
ZHEJIANG JINGXING PAPER JOINT STOCK CO LTD (CN)
International Classes:
B27K3/34; B27K3/50; B27K5/00; B27K5/02
Foreign References:
| CN110328727A | 2019-10-15 | |||
| CN106243391A | 2016-12-21 | |||
| CN108312281A | 2018-07-24 | |||
| CN108284499A | 2018-07-17 | |||
| CN109262783A | 2019-01-25 | |||
| CN208812277U | 2019-05-03 | |||
| JP2006123297A | 2006-05-18 |
Other References:
ZHOU, XUEFEI: "Application of Ethanol in Pulping Industry", JOURNAL OF CELLULOSE SCIENCE AND TECHNOLOGY, vol. 13, no. 1,, 31 March 2005 (2005-03-31), DOI: 20200305163049Y
Attorney, Agent or Firm:
HANGZHOU HUADING INTELLECTUAL PROPERTY LAW FIRM (CN)
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