工艺与制造英文2024被引 4
原位自动铺纤碳纤维增强低熔点聚芳醚酮层合板的特性 第一部分:制造工艺影响
Characteristics of in-situ automated fiber placement carbon-fiber-reinforced low-melt polyaryl ether ketone laminates part 1: Manufacturing influences
Ines Mössinger, Lukas Raps, Daniel Fricke, J. M. Freund, Miriam Löbbecke, Ashley R. Chadwick · Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
摘要整理
本研究调查了采用新型碳纤维增强低熔点聚芳醚酮(低熔点PAEK)聚合物材料通过自动铺纤(AFP)工艺制造的层合板的力学性能、热性能及微观结构。该材料相比PEEK等传统高温热塑性材料具有更低的熔融温度和更低的熔体粘度,为自动铺纤工艺提供了有利条件。本研究重点关注原位固化、加热工装和后处理退火工艺的影响。制造了四种层合板:冷工装、加热工装、冷工装+后处理退火和热压参考样品。差示扫描量热法(DSC)结果表明,加热工装和后处理退火配置的结晶度分别达到24%和30%,相比冷工装配置(约12%)提高了一倍以上。力学性能测试显示层间剪切强度和压缩强度有所提升,但增幅未能与结晶度提高幅度相匹配。扫描电子显微镜(SEM)观察到不同工艺条件下聚合物基体的微观结构存在差异:后处理退火主要形成层状结晶结构,而加热工装和热压工艺诱导球晶结构占主导,可能对力学性能产生正面影响。计算机断层扫描(CT)扫描发现原位制造样品和未处理带状材料中存在大量孔隙,这可能抵消了结晶度提高带来的正面效应。
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