考虑颗粒团聚影响的聚合物基复合材料温度相关性拉伸断裂强度理论表征模型  

Theoretical characterization model of temperature-dependent tensile fracture strength of polymer matrix composites with considering the effect of particle agglomeration

作　　者：徐超[1] 董攀[1] 巫运韬 王如转 李莹 李卫国[1] XU Chao;DONG Pan;WU Yuntao;WANG Ruzhuang;LI Ying;LI Weiguo(College of Aerospace Engineering,Chongqing University,Chongqing 400044,P.R.China;College of Metallurgical and Materials Engineering,Chongqing University of Science and Technology,Chongqing 401331,P.R.China;School of Aeronautics,Chongqing Jiaotong University,Chongqing 400074,P.R.China)

机构地区：[1]重庆大学航空航天学院,重庆400044 [2]重庆科技学院冶金与材料工程学院,重庆401331 [3]重庆交通大学航空学院,重庆400074

出　　处：《重庆大学学报》2024年第8期132-140,共9页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(12172069,12202086)。

摘　　要：聚合物基复合材料在不同温度下的拉伸断裂强度一直是人们关注的焦点,颗粒作为一种常见增强相可以显著提高聚合物基复合材料的拉伸断裂强度。然而,随着颗粒体积分数的增加,颗粒将会发生团聚现象,从而影响增强效果。针对颗粒增强聚合物基复合材料,通过计及颗粒团聚的影响,以及材料热物理性能随温度的演化,建立了一个考虑团聚影响的温度相关性拉伸断裂强度理论表征模型。模型得到了实验数据的良好验证。研究成果为定量表征不同颗粒含量、不同温度下复合材料的拉伸断裂强度提供了一种有效途径,加深了对不同温度下团聚现象对复合材料力学性能影响的认识。The tensile fracture strength of polymer matrix composites at different temperatures has always been an important concern.As a common reinforcement phase,particles can significantly improve the tensile fracture strength of polymer matrix composites.However,with the increase of particle volume fraction,particles tend to agglomerate,which affects the strengthening effect.For particle-reinforced polymer composites,with considering the effects of particle agglomeration,as well as the evolution of the thermo-physical performance with temperature,a temperature-dependent analytical model for predicting the tensile fracture strength of particlereinforced polymer composites was developed.The model predictions were in good agreement with the experimental data.The research results provide an effective way to quantitatively characterize the tensile fracture strength of composites with different particle contents and temperatures,and deepen the understanding of the influence of agglomeration phenomenon on the mechanical properties of composites at different temperatures.

关 键 词：颗粒增强 聚合物基复合材料 温度相关性 团聚 拉伸断裂强度 

分 类 号：O341[理学—固体力学]