工艺与制造英文2022被引 10
激光辅助自动铺纤成型碳纤维/聚苯硫醚热塑性复合材料的结晶机制与力学性能
Crystallization mechanism and mechanical properties of CF/PPS thermoplastic composites manufactured by laser-assisted automated fiber placement
Dacheng Zhao, Zhefu Li, Weiping Liu, Ting Li, Guangquan Yue, Lijian Pan · Donghua University
摘要整理
激光辅助自动铺纤技术可实现热塑性复合材料的原位固化，复合材料性能受结晶度显著影响。本研究系统调查了碳纤维/聚苯硫醚（CF/PPS）复合材料在自动铺纤过程中的结晶机制及其对力学性能的影响。结晶动力学分析表明，CF/PPS复合材料的结晶温度窗口为87～270°C。激光温度、铺纤速度和工具温度等工艺参数均影响复合材料的结晶度，其中工具温度是主要控制因素。提高工具温度是获得高结晶度的有效方法；当工具温度在结晶温度窗口范围内时，复合材料可经历等温结晶过程，进一步提升结晶度。随着工具温度增加，由于基体自粘性增强，弯曲强度和层间剪切强度均得到改善；但由于基体韧性降低，Mode I断裂韧性反而下降。结合动力学方法与实验研究，有利于深入理解结晶机制、优化工艺参数，为自动铺纤成型高性能热塑性复合材料提供指导。
相关论文
A review of recent developments in natural fibre composites and their mechanical performance
Composites Part A Applied Science and Manufacturing · 2015
Non-invasive electrical and magnetic stimulation of the brain, spinal cord, roots and peripheral nerves: Basic principles and procedures for routine clinical and research application. An updated report from an I.F.C.N. Committee
Clinical Neurophysiology · 2015
Lignocellulosic biomass: a sustainable platform for the production of bio-based chemicals and polymers
Polymer Chemistry · 2015
Design for Additive Manufacturing: Trends, opportunities, considerations, and constraints
CIRP Annals · 2016
Nanoimprint Lithography: Methods and Material Requirements
Advanced Materials · 2007
Nanocomposites: synthesis, structure, properties and new application opportunities
Materials Research · 2009
← 返回论文库整理：复材站编辑部