Colorado Henry A, Yuan Wei, Meza Juan, Jaramillo Franklin, Gutierrez-Velasquez Elkin I
Composites Laboratory, Engineering School, Universidad de Antioquia (UdeA), Calle 70 No. 52-21, Medellín 050010, Colombia.
Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA.
Polymers (Basel). 2023 Nov 16;15(22):4418. doi: 10.3390/polym15224418.
Poly(dicyclopentadiene) (poly-DCPD) is a thermoset with potential for high-performance applications. In this research, epoxy resin was blended with different concentrations of fly ash class F particles at 0.0, 1.0, 10.0, and 50.0 wt.%, aiming to improve its use as a high-volume structural material by decreasing costs and reducing its negative environmental impact through using fly ash particles. A planetary Thinky mixer was used to initially mix the resin with the curing agent, followed by incorporating a Grubbs catalyst. The microstructures were analyzed using scanning electron microscopy (SEM), where particles were found to be homogeneously distributed over the polymer matrix. The thermomechanical behavior was evaluated via curing, compression, dynamic mechanical analysis (DMA), and thermo-gravimetric analysis (TGA). Nanoindentation tests were also conducted. Fly ash was found to decelerate the curing of the resin through the release of calcium ions that enhanced the exothermic reaction.
聚二环戊二烯（聚-DCPD）是一种具有高性能应用潜力的热固性材料。在本研究中，将环氧树脂与不同浓度（0.0、1.0、10.0和50.0 wt.%）的F类粉煤灰颗粒混合，旨在通过使用粉煤灰颗粒降低成本并减少其对环境的负面影响，从而改善其作为高用量结构材料的性能。最初使用行星式Thinky混合器将树脂与固化剂混合，随后加入格拉布催化剂。使用扫描电子显微镜（SEM）分析微观结构，发现颗粒均匀分布在聚合物基体上。通过固化、压缩、动态力学分析（DMA）和热重分析（TGA）评估热机械性能。还进行了纳米压痕测试。发现粉煤灰通过释放钙离子减缓树脂的固化，而钙离子增强了放热反应。
