Żmuda Emil, Wronka Anita, Kowaluk Grzegorz, Radomski Andrzej
Department of Wood Science and Wood Protection, Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159, 02-776 Warsaw, Poland.
Department of Technology and Entrepreneurship in the Wood Industry, Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences-SGGW, Nowoursynowska Str. 159, 02-776 Warsaw, Poland.
Materials (Basel). 2024 Dec 19;17(24):6212. doi: 10.3390/ma17246212.
This study aimed to evaluate the bondability of beech and alder wood modified through styrene polymerization within the wood lumen. Unmodified wood samples served as the reference material. Bondability was tested using four adhesive types commonly used in wood technology: polyvinyl acetate (PVAc), urea-formaldehyde (UF), phenol-resorcinol-formaldehyde (PRF), and epoxy resin. In addition to shear strength measurements, the adhesive density profile was also assessed. Results indicated that styrene modification generally reduced wood bondability, with reductions in shear strength ranging from 8% to 23% for beech wood and 1.6% to 29% for alder wood, depending on the adhesive type. The only exception was observed with the epoxy adhesive, which showed a 13% improvement in bonding quality for modified wood. These findings suggest that while styrene modification may enhance specific properties of wood, it can adversely affect its adhesion performance with some adhesive systems, except epoxy, which displayed improved compatibility with styrene-modified wood. The study offers insights for selecting suitable adhesives when using modified wood in structural applications.
本研究旨在评估通过木腔体内苯乙烯聚合改性的山毛榉和桤木木材的胶合性能。未改性的木材样品用作参考材料。使用木材工艺中常用的四种胶粘剂类型测试胶合性能：聚醋酸乙烯酯（PVAc）、脲醛（UF）、酚醛间苯二酚甲醛（PRF）和环氧树脂。除了剪切强度测量外，还评估了胶粘剂密度分布。结果表明，苯乙烯改性通常会降低木材的胶合性能，根据胶粘剂类型的不同，山毛榉木材的剪切强度降低幅度为8%至23%，桤木木材为1.6%至29%。唯一的例外是环氧胶粘剂，改性木材的胶合质量提高了13%。这些发现表明，虽然苯乙烯改性可能会增强木材的特定性能，但它可能会对其与某些胶粘剂系统的粘合性能产生不利影响，环氧胶粘剂除外，它与苯乙烯改性木材显示出更好的相容性。该研究为在结构应用中使用改性木材时选择合适的胶粘剂提供了见解。
