摘要
高性能连续纤维增强热塑性树脂基复合材料具备高韧性、耐疲劳、抗冲击、可重复加工等特性,可弥补传统热固性复合材料韧性不足、在低速冲击下易分层、疲劳极限低等不足。本研究以AC8201树脂为基体,国产高强玻璃纤维S6C10为增强材料,使用悬浮热熔法成功制备了一种连续高强玻璃纤维增强聚醚醚酮热塑性预浸料,牌号为S6C10/AC8201,其外观均匀平整且无干纱,树脂含量为24.8%,具有良好的物理性能与加工工艺性。使用热压成型工艺制备S6C10/AC8201复合材料层合板,其厚度均匀且无干纱,展现出了优异的力学性能和疲劳性能。其中弯曲强度为1818 MPa,相比TC1200预浸料的弯曲强度提升13.6%;0°拉伸疲劳极限强度为490 MPa,相比热固性S6增强高温环氧复合材料的0°拉伸疲劳极限强度提升21.3%。
High-performance continuous fiber reinforced thermoplastic resin-based composites possess properties such as high toughness,fatigue resistance,impact resistance,and reprocessable capabilities.These characteristics allow them to address the shortcomings of traditional thermosetting composites,which includes insufficient toughness,tendency to delaminate under low-speed impacts,and low fatigue limit.In this study,using AC8201 resin as the matrix and domestic high-strength glass fiber S6C10 as the reinforcing material,a continuous high-strength glass fiber reinforced polyether-ether-ketone thermoplastic prepreg with the grade of S6C10/AC8201 was successfully prepared by the suspension hot melt method.The appearance of the prepreg was uniform and flat without dry yarn,and the resin content of the prepreg was 24.8%with excellent physical properties and processability.Utilizing thermo press molding technology,composite laminates made from S6C10/AC8201 had been fabricated.These laminates featured even thickness distribution,no dry fibers,and exhibited outstanding mechanical performance and fatigue resistance.Specifically,the bending strength of the developed composite material reached 1818 MPa,representing 13.6%improvement compared to that of TC1200 prepreg.Furthermore,the 0°tensile fatigue limit strength was measured at 490 MPa,showcasing a significant enhancement of 21.3%over that of thermoset S6-reinforced high-temperature epoxy composites.
作者
霍红宇
姚鑫
石峰晖
高亮
张宝艳
HUO Hongyu;YAO Xin;SHI Fenghui;GAO Liang;ZHANG Baoyan(Composite Technology Center,AVIC Manufacturing Technology Institute,Beijing 101300,China)
出处
《复合材料科学与工程》
北大核心
2025年第12期50-55,62,共7页
Composites Science and Engineering
