DETERMINATION OF UREA-FORMALDEHYDE RESIN CONTENT IN POPLAR FIBER BASED ON HYPERSPECTRAL TECHNIQUES

IF 0.9 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Wood Research Pub Date : 2023-06-28 DOI:10.37763/wr.1336-4561/68.3.488501

Chunmei Yang, Zanbin Zhu, Tongbin Liu, Bo Xue, Wen Qu, Tingting Wang

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引用次数: 0

Abstract

In this experiment, poplar fibers containing 0%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20%, 25% and 30% of urea-formaldehyde resin were prepared. A model for the detection of urea-formaldehyde resin content in poplar fibers was established by the hyperspectral near-infrared imaging system combined with relevant algorithms. The spectral images of poplar fibers containing different contents of urea-formaldehyde (UF) resin were measured separately using hyperspectral imager. The results of four preprocessing methods, namely mean centering (MC), multiple scattering correction (MSC), standard normal variables (SNV) and first-order derivative (1-Der) were analyzed, and the optimal preprocessing method was selected as SNV. The band combinations with the highest correlation with the urea-formaldehyde resin content were compared and analyzed with the full-band model to establish the partial least squares regression (PLSR) model. The experimental results show that the hyperspectral imaging system combined with the corresponding algorithm can achieve rapid detection of UF resin content in poplar fibers, and the results of this study provide technical support and theoretical reference for determination of resin content in ultra-thin fiberboard production. The method is an innovative model for the determination of UF resin in wood fibers.

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基于高光谱技术测定杨树纤维中脲醛树脂含量

本实验制备了含0%、2%、4%、6%、8%、10%、12%、14%、16%、18%、20%、25%、30%脲醛树脂的杨木纤维。利用高光谱近红外成像系统结合相关算法，建立了杨树纤维中脲醛树脂含量的检测模型。采用高光谱成像仪分别测定了不同脲醛树脂含量杨树纤维的光谱图像。对平均定心(MC)、多次散射校正(MSC)、标准正态变量(SNV)和一阶导数(1-Der) 4种预处理方法的结果进行分析，选择最优预处理方法为SNV。利用全波段模型对与脲醛树脂含量相关性最高的波段组合进行比较分析，建立偏最小二乘回归(PLSR)模型。实验结果表明，结合相应算法的高光谱成像系统可以实现杨木纤维中UF树脂含量的快速检测，本研究结果为超薄纤维板生产中树脂含量的测定提供了技术支持和理论参考。该方法是木材纤维中UF树脂含量测定的创新模型。

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来源期刊

Wood Research 工程技术-材料科学：纸与木材

CiteScore

2.40

自引率

15.40%

发文量

审稿时长

5.4 months

期刊介绍： Wood Research publishes original papers aimed at recent advances in all branches of wood science (biology, chemistry, wood physics and mechanics, mechanical and chemical processing etc.). Submission of the manuscript implies that it has not been published before and it is not under consideration for publication elsewhere.