The effect of self-resistance electric heating on the interfacial behavior of injection molded carbon fiber/polypropylene composites through molecular dynamics analysis
The effect of self-resistance electric heating on the interfacial behavior of injection molded carbon fiber/polypropylene composites through molecular dynamics analysis
复制标题
通过分子动力学分析自电阻电加热对注塑碳纤维/聚丙烯复合材料界面行为的影响
DOI：
10.1016/j.polymer.2020.122915
复制
发表时间：
2020-10-20
期刊：
影响因子：
4.6
通讯作者：
Jiang, Bingyan
中科院分区：
文献类型：
--
作者：
Zhang, Muhan;Wang, Xiaoyu;Jiang, Bingyan
通过自电阻电（SRE）加热在注塑模具中浸渍碳纤维增强材料，为大批量低成本制造碳纤维增强热塑性塑料开辟了道路。碳纤维在SRE加热下的表面形貌变化会影响复合材料的界面性能。本文采用分子动力学方法研究了碳纤维（CF）和聚丙烯（PP）在复合材料中的原子水平相互作用。探讨了CF表面形貌对界面浸渍能力、力学性能和界面破坏机理的影响。仿真结果表明，增加CF表面的纵横比或沟槽数量可以提高复合材料界面的质量。界面破坏模式与CF表面形貌有关。此外，利用高动能富集区预测了聚合物体内部微孔洞的演化。
The impregnation of carbon fabric reinforcements in an injection mold through self-resistance electric (SRE) heating opens the way for manufacturing carbon fiber reinforced thermoplastics in quantities and low cost. The surface morphology evolution of carbon fiber under SRE heating may affect the interfacial properties of resulting composites. In this work, molecular dynamics was introduced to investigate the atomic-level interaction between carbon fiber (CF) and polypropylene (PP) in composites. The influence of CF surface morphology on the interfacial impregnation ability, mechanical properties and interface failure mechanism were explored. Simulation results reveal that increasing the aspect ratio or the amount of grooves of CF surface can enhance the quality of composite interface. The interface failure mode was found to be related to CF surface morphology. In addition, the high kinetic energy enrichment area was used to predict the evolution of micro-void inside the polymer bulk.