热压温度对以制浆废水制备的秸秆基无胶纤维板性能的影响

Effect of Hot-Pressing Temperature on Characteristics of Straw-Based Binderless Fiberboards with Pulping Effluent.

作者信息

Wang Jiajun, Wang Bo, Liu Junliang, Ni Lin, Li Jianzhang

机构信息

Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.

MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineering, MOE Engineering Research Centre of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.

出版信息

Materials (Basel). 2019 Mar 20;12(6):922. doi: 10.3390/ma12060922.

DOI:10.3390/ma12060922

PMID:30897715

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6471877/

Abstract

This study aimed to improve straw-based fiberboard properties without resins by adding pulping effluent as well as to investigate the difference among boards under variable hot-pressing temperatures. The characterization of fiberboards produced from wheat straw under pressing temperatures ranging from 160 to 200 °C was first described. The surface appearance, surface chemistry, thermal transitions, and mechanical performance of the boards were evaluated to investigate the effect of varying hot-pressing temperature. The results indicated that the surface color of boards became darker when the temperature was above 190 °C. Additionally, Fourier transform infrared (FT-IR) measurements showed that more low-molecular constituents and hydrogen bonds were produced under higher pressing temperatures. Furthermore, the physical and mechanical property data were analyzed statistically using one-way analysis of variance (ANOVA) and Tukey's tests (α = 0.05). The results demonstrated that straw-based fiberboards with effluent under 190 °C exhibited superior strength and water resistance capacities, and showed great potential in commercial decorating and packaging applications.

摘要

本研究旨在通过添加制浆废水来改善无树脂秸秆纤维板的性能，并研究不同热压温度下板材之间的差异。首先描述了在160至200°C的热压温度下由小麦秸秆制成的纤维板的特性。对板材的表面外观、表面化学、热转变和机械性能进行了评估，以研究不同热压温度的影响。结果表明，当温度高于190°C时，板材的表面颜色变深。此外，傅里叶变换红外（FT-IR）测量表明，在较高的热压温度下会产生更多的低分子成分和氢键。此外，使用单因素方差分析（ANOVA）和Tukey检验（α = 0.05）对物理和机械性能数据进行了统计分析。结果表明，190°C以下含废水的秸秆纤维板具有优异的强度和耐水性，在商业装饰和包装应用中显示出巨大潜力。