碳化硼/环氧树脂复合材料的力学性能及疲劳寿命  

Mechanical Properties and Fatigue Life of Boron Carbide/Epoxy Resin Composites

作　　者：刘艳萍[1] 赵硕[1] 石江 周子雷 袁茂清 田楠 李倩[1] LIU Yanping;ZHAO Shuo;SHI Jiang;ZHOU Zilei;YUAN Maoqing;TIAN Nan;LI Qian(School of Mechanics and Safety Engineering Science,Zhengzhou University,National Center for International Joint Research of Micro-nanoMolding Technology,Zhengzhou 450001,China;School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an 710129,China)

机构地区：[1]郑州大学力学与安全工程学院,微纳成型技术国家级国际联合研究中心,河南郑州450001 [2]西北工业大学化学与化工学院,西安710129

出　　处：《塑料工业》2022年第12期63-68,75,共7页China Plastics Industry

基　　金：河南省青年骨干教师资助计划(2020GGJS015);河南省高等学校重点科研项目(21A430043);陕西省自然科学基金(2021JQ-114)。

摘　　要：碳化硼是良好的中子吸收剂,作为填充材料与环氧树脂复合后有望成为综合性能优良的中子辐射屏蔽材料。为研究碳化硼纳米粒子对环氧树脂力学性能的影响,制备了不同组分的碳化硼/环氧树脂复合材料并对其进行单轴拉伸、三点弯、动态机械性能分析和疲劳试验,发现碳化硼的质量分数为1.5%时复合材料具有最优的韧性和强度。利用Fe-safe软件对碳化硼/纯环氧树脂复合材料进行疲劳寿命的数值模拟,模拟结果能够与疲劳试验很好地吻合,从而为复合材料的疲劳寿命预测提供了方法;结合ABAQUS对纳米粒子/树脂基体两相模型进行数值模拟,明晰了碳化硼增强增韧环氧树脂的机制,为碳化硼/环氧树脂复合材料在航空和核电等领域的应用奠定了基础。Boron carbide was a good neutron absorber,and it was expected to become a neutron radiation shielding material with excellent comprehensive properties after being compounded with epoxy resin as a filler material.In order to study the effect of boron carbide nanoparticles on the mechanical properties of epoxy resins,boron carbide/epoxy resin composites with different components were prepared and subjected to uniaxial stretching,three-point bending,dynamic mechanical property analysis and fatigue analysis.In the experiment,it is found that the composite material has the optimal toughness and strength when the boron carbide content is 1.5%.The Fe-safe software is used to carry out the numerical simulation of the fatigue life of the boron carbide/pure epoxy resin composite material,and the analysis results are in good agreement with the fatigue test,which provides a method for the prediction of fatigue life of composite materials.Combining with ABAQUS,the nanoparticle/resin matrix two-phase model is numerically simulated,and the mechanism of boron carbide to strengthen and toughen epoxy resin is clarified,which lays a foundation for the application of boron carbide/epoxy composites in aviation and nuclear power.

关 键 词：环氧树脂 复合材料 碳化硼 疲劳 数值模拟 

分 类 号：TQ327.4[化学工程—合成树脂塑料工业]