文献类型：期刊文献

英文题名：Surface Crack Occurrence and Resistance During Moisture Content Changes in MF-Resin-Impregnated Paper-Decorated Blockboard

作者：Feng, Yun[1,2] Qu, Wei[1] Wu, Guofang[1] Wu, Yuzhang[1] He, Jinrong[1] Shen, Yinlan[3] Cao, Jinzhen[2] Peng, Limin[1]

第一作者：Feng, Yun

通信作者：Peng, LM[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China

年份：2025

卷号：16

期号：3

外文期刊名：FORESTS

收录：;EI(收录号：20251318136795);Scopus(收录号：2-s2.0-105001116088);WOS:【SCI-EXPANDED(收录号:WOS:001452277400001)】；

基金：This research was funded by the Fundamental Research Funds of the Chinese Academy of Forestry, grant number CAFYBB2023PA004.

语种：英文

外文关键词：surface crack; decorated blockboard; moisture stress; finite element analysis; halloysite nanotubes

摘要：In multi-layered wood materials, varying rates of dimensional changes can easily lead to cracking, which can have a negative impact on their structure and functionality. This study focuses on cracking issues of decorated blockboard caused by moisture content changes. First, surface cracks on the decorated blockboard were observed and classified using optical microscopy and scanning electron microscopy (SEM). Second, from modeling perspectives, the critical tensile strength of the surface of the decorated blockboard was predicted to be 16.93 MPa, providing guidance for crack-resistant modification. Subsequently, halloysite nanotubes (HNTs) were incorporated into MF-resin-impregnated paper, achieving a Grade 5 crack resistance for decorated blockboard. The interaction between HNTs and MF resin forms a multiscale stress-dispersion system, as confirmed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD), indicating hydrogen and covalent bonding between HNTs and the MF resin. With a 5% HNTs addition, the tensile strength and strain break of the MF-resin-impregnated paper reached 36.60 MPa and 1.12%, respectively, representing increases of 97.39% and 60.00%, respectively, effectively preventing surface cracking. This has significant implications for improving the durability and performance of decorated blockboard in practical applications.