文献类型：期刊文献

英文题名：Processing composites reinforced with wood fibers into an ultra-strong structural materials

作者：Tang, Qiheng[1] Zou, Miao[1] Wang, Shuangyong[1] Fang, Lu[2] Guo, Wenjing[1]

第一作者：唐启恒

通信作者：Guo, WJ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, 1 Dongxiaofu, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coll Furnishings & Ind Design, Nanjing, Jiangsu, Peoples R China

年份：2021

卷号：42

期号：6

起止页码：2872-2881

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20211810270618);Scopus(收录号：2-s2.0-85104864070);WOS:【SCI-EXPANDED(收录号:WOS:000643430900001)】；

基金：Special Fund of Chinese Central Government for Basic Scientific Research Operations in Commonweal Research Institutes, Grant/Award Number: CAFYBB2018GD002-02

语种：英文

外文关键词：mechanical properties; microstructures; thermal properties; thermosetting resin; wood fibers

摘要：High-performance composites reinforced with natural fibers are next-generation structural materials due to their recyclability and light weight. Manufacturing composites with high strength has been a challenge. Here, we describe the manufacture of novel composites reinforced with wood fibers using densification by hot-pressing and fixing by curing reaction with phenolic resin. This composite with 1.4 g/cm(3) had high mechanical properties, high water stability, and aging-resistance, and exhibited a flexural strength and internal bonding strength of 102.4 and 7.5 MPa, respectively. The strength and modulus are 1.5-6.0 and 1.3-28.1 times higher than those of most of the wood fibers reinforced composites. After immersing in water for 24 h, the water absorption and thickness swelling are only 1.3% and 0.8%, respectively. Scanning electron microscope characterization indicates that the cell wall is totally collapsed and became complete densification. And the collapsed cells are fixed by phenolic resin. This production strategy for the composites was shown to be universally effective for various species of natural fibers. These novel wood fiber-reinforced composites were suitable for commercial manufacture in the current production line, making them a low cost and high-performance alternative to automotive and aerospace industries.