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用回收填充剂增强的生物基环氧粘合剂
Alberto Cellai1, Lorenzo Pezzana1, Valentina Casalegno1
1Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy.
Polymers
|November 27, 2025
概括
这项研究开发了一种可持续的生物基粘合剂,使用碳纤维和矿物羊毛等回收填充剂. 新的粘合剂在结构粘合应用中显示出更好的刚性和强度.
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
- 可持续工程 可持续工程
背景情况:
- 开发可持续的粘合剂对于减少对环境的影响至关重要.
- 生物基树脂为以石油为基础的聚合物提供了潜在的替代品.
- 纳入回收材料符合循环经济原则.
研究的目的:
- 通过使用回收填充剂 (回收碳纤维和矿物羊毛) 来研究一种基于生物的热固化粘合剂系统.
- 评估回收填充剂对粘合剂固化行为,热稳定性和机械性能的影响.
- 评估这种可持续粘合剂在结构粘合应用中的潜力.
主要方法:
- 基于二甲基乙醇 (DGEVA) 的二甲基乙烯基乙醇 (DGEVA) 粘合剂的配方,不同比例的再生碳纤维 (RCF) 和矿物质羊毛 (MW).
- 使用FTIR光谱学,差分扫描热量计 (DSC) 和动态DSC进行表征,以测定固化行为和动力学.
- 通过动态机械热分析 (DMTA) 和剪切环测试来评估机械和热机械性能.
- 使用扫描电子显微镜 (SEM) 进行形态分析.
主要成果:
- 增加填充剂含量 (RCF和MW) 影响了聚合动力学,增加了激活能量,但保持了高的转换率.
- 使用回收填充剂的粘合剂配方与整洁树脂相比,显示出增强的刚性和粘合强度.
- 碳基复合材料 (CMC) 接头的性能得到了改善.
- SEM分析提供了对填充剂分散和接口粘附的见解.
结论:
- 以回收填充剂加强的基于DGEVA的粘合剂系统为结构粘合提供了一个可行的和可持续的选择.
- 这种方法有助于废物利用和开发工程绿色材料.
- 该研究强调了生物基粘合剂的潜力,这些生物基粘合剂具有循环内容,可以提高性能和环境效益.
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