速生杨木高孔隙率结构调控及透明化应用

doi:10.3969/j.issn.0253-2417.2020.05.015

林产化学与工业 ›› 2020, Vol. 40 ›› Issue (5): 107-113.doi: 10.3969/j.issn.0253-2417.2020.05.015

速生杨木高孔隙率结构调控及透明化应用

殷学风,王忠祥,田杏欢,范晶,林涛*,张聪

陕西科技大学轻工科学与工程学院;轻化工程国家级实验教学示范中心;陕西省造纸技术及特种纸品开发重点实验室, 陕西西安 710021 College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology;National Demonstration Center for Experimental Light Chemistry Engineering Education;Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, Xi'an 710021, China

收稿日期:2020-05-25 出版日期:2020-10-28 发布日期:2020-10-31
通讯作者: 林涛
作者简介:殷学风(1974—),女,湖北钟祥人,讲师,博士,从事植物资源高质化利用研究
基金资助:
陕西省自然科学基础研究计划项目(2019JM-485)

High Porosity Structure Control and Transparent Application of Fast-growing Poplar

Xuefeng YIN,Zhongxiang WANG,Xinghuan TIAN,Jing FAN,Tao LIN*,Cong ZHANG

Received:2020-05-25 Online:2020-10-28 Published:2020-10-31
Contact: Tao LIN

摘要/Abstract

摘要：

采用ClO₂脱木质素法对杨木脱色，同时调控其结构，在保证杨木板材形态完整的情况下，探究了ClO₂处理时间对杨木结构和化学组分的影响，并对脱色杨木进行了聚甲基丙烯酸树脂（PMMA）浸渍改性。研究发现：杨木经ClO₂处理3 h后白度达到83.2%，且脱色均匀、板材形态保持完整，孔隙率由原木的11.8%提升至31.4%，有效地提升了杨木的孔隙通道。脱色杨木经过聚甲基丙烯酸树脂浸渍改性后，不仅拥有美丽的外观和良好的尺寸稳定性，而且其质量增加率、密度和强度分别由原木的32.1%、0.40 g/cm³和32.8 MPa增加至80.5%、1.48 g/cm³和87.4 MPa，均超过原木的2.5倍。

关键词: 速生杨木, 二氧化氯, 结构调控, 聚甲基丙烯酸树脂, 透明木材

Abstract:

The method of ClO₂ delignification was used to decolorize and control the structure of fast-growing poplar. Under the condition of ensuring the intact shape of poplar board, the effects of treatment time on the structure and chemical components of fast-growing poplar were explored, and then the decolorized poplar was modified by polymethylacrylic resin(PMMA) impregnation. It was found that the brightness was 83.2% and decolorization was uniform after being treated with ClO₂ for 3 h, the shape of the poplar board remained intact, the porosity increased from 11.8% to 31.4%, which effectively improved the pore passage of poplar. After being impregnated with polymethylacrylic resin, the decolorized poplar had beautiful appearance and good dimensional stability, and its mass increase rate, density and strength increased from 32.1%, 0.40 g/cm³ and 32.8 MPa of log to 80.5%, 1.48 g/cm³ and 87.4 MPa, respectively, which were more than 2.5 times of those of log.

Key words: fast-growing poplar, chlorine dioxide, structural control, polymethylacrylic resin, transparent wood

中图分类号:

TS65

殷学风,王忠祥,田杏欢,范晶,林涛,张聪. 速生杨木高孔隙率结构调控及透明化应用[J]. 林产化学与工业, 2020, 40(5): 107-113.

Xuefeng YIN,Zhongxiang WANG,Xinghuan TIAN,Jing FAN,Tao LIN,Cong ZHANG. High Porosity Structure Control and Transparent Application of Fast-growing Poplar[J]. Chemistry and Industry of Forest Products, 2020, 40(5): 107-113.

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速生杨木高孔隙率结构调控及透明化应用

High Porosity Structure Control and Transparent Application of Fast-growing Poplar

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