不同温度下CF/PPESK复合材料吸湿老化行为有限元分析  

Finite Element Analysis of Moisture Absorption and Aging Behaviors of CF/PPESK Composite at Different Temperatures

作　　者：李昱鹏[1] 佟野 雷明凯[1] LI Yupeng;TONG Ye;LEI Mingkai(Surface Engineering Laboratory,School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学材料科学与工程学院表面工程实验室,辽宁大连116024

出　　处：《材料保护》2025年第1期75-81,共7页Materials Protection

基　　金：国家自然科学重点基金(U21B2078);国家自然科学基金(51975086)。

摘　　要：聚芳醚砜酮(PPESK)复合材料可作为耐高温涂料、耐磨自润滑材料被广泛用于核电装备零部件防护。为了研究温度对碳纤维增强聚芳醚砜酮(CF/PPESK)复合材料吸湿老化行为的影响,建立二维复合材料模型,利用ABAQUS对25℃和100℃条件下CF/PPESK复合材料的吸湿行为及吸湿应力分布规律进行研究。根据获得的水分浓度场数据,对CF/PPESK复合材料随温度及时间变化的吸湿应力场进行了分析。结果表明:水分在CF/PPESK复合材料的扩散过程基本满足Fick扩散定律;温度越高,达到吸湿平衡越快,吸湿应力越大,当高温状态长时间吸湿导致材料内部饱和吸湿时,最大应力达到140.2 MPa,最大吸湿应力出现在纤维排列间距最近的基体区域。Polyarylethersulfoneketone(PPESK)composite materials can be used as high⁃temperature resistant coatings and wear⁃resistant self⁃lubricating materials,which are widely used in the protection of nuclear power equipment parts.To study the effect of temperature on the moisture absorption behavior of CF/PPESK composites,a two⁃dimensional composite model was established,and the moisture absorption be⁃havior and moisture absorption stress distribution rules of CF/PPESK composites under 25℃and 100℃conditions were studied by ABAQUS.Based on the obtained moisture concentration field data,the moisture absorption stress field of CF/PPESK composites with changes in tempera⁃ture and time was analyzed.Results showed that the moisture diffusion in CF/PPESK composites basically followed Fick’s diffusion law.The higher the temperature,the faster the moisture absorption equilibrium was reached,and the greater the moisture absorption stress.When long⁃term moisture absorption at high temperature caused the material to be saturated with moisture,the maximum stress reached 140.2 MPa,and the maximum moisture absorption stress occurred in the substrate area where the fiber arrangement spacing was the smallest.

关 键 词：ABAQUS 碳纤维增强聚芳醚砜酮复合材料 吸湿行为 吸湿应力 

分 类 号：TB332[一般工业技术—材料科学与工程]