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松树皮以素为基础的树脂用于木材复合材料应用
Shafaet Ahmed1, Armando G McDonald1
1Department of Forest, Rangeland and Fire Sciences, University of Idaho, Moscow, Idaho 83844, United States.
ACS omega
|December 8, 2025
概括
松树皮皮,特别是来自Pinus ponderosa的皮,显示出在--甲 (PRF) 树脂中作为的可持续替代品的潜力. 这些生物基色素增强木材复合材料的性能,提供更好的热稳定性和机械强度.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- --甲 (PRF) 树脂是广泛使用的粘合剂.
- 在树脂生产中,对传统的石油化学品的可持续和生物替代品的需求越来越大.
研究的目的:
- 研究松树皮素作为PRF树脂中的部分或全部替代物的潜力.
- 为了评估PRF树脂和木材复合材料的特性,这些树脂和木材复合材料与不同的松树皮化物进行了改性.
主要方法:
- 从Pinus ponderosa,Pinus radiata和商业海上松树皮中采用热水提取阳.
- 使用TGA,FTIR,ESI-MS和NMR进行色素的表征.
- 制备PRF树脂,坦宁-PRF混合物和木材复合材料.
- 通过膝盖剪切测试和复合材料特性 (热,机械,,吸水) 的粘合性质的评估.
主要成果:
- 松树皮色素表现出不同的化学结构和热特性.
- PRF和Pinus ponderosa tannin (PT) -PRF树脂表现出了出色的粘合性能.
- PT-PRF混合复合材料显示了增强的热稳定性,焦炭形成,屈曲强度 (37.0 MPa) 和模量 (4.51 GPa).
- 与整洁制系统相比,PT-PRF复合材料表现出更好的尺寸稳定性和较低的吸水率.
结论:
- 松树 ponderosa 树皮宁是一种有前途的生物基替代品,用于高性能木材粘合剂.
- 与PRF的混合增强了素的反应性,热强度和机械性能.
- 这项研究突出了开发先进木复合材料的可持续途径.
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