复合材料科学与工程Issue(10)：53-59,7.DOI:10.19936/j.cnki.2096-8000.20251028.008
石墨烯对超高分子量聚乙烯纤维蠕变行为的影响规律研究
Study on the influence of graphene on the creep behavior of ultra-high molecular weight polyethylene fibers
摘要
Abstract
UHMWPE fibers with graphene content ranging from 0%to 15%were prepared via a twin-screw ex-truder.The creep strain and creep rate of the fibers were measured using constant-load creep tests,and the creep behavior was predicted using the Burgers model.The results showed that as the graphene content increased from 0%to 8%,the fiber's creep resistance improved.Within the initial 7.5 s of loading,the creep strain ε7.5 decreased from 2.23%to 1.41%,and the creep rate dε7.5 dropped from 0.28 s-1 to 0.19 s-1.During the stable loading stage,the creep strain ε12000 fell from 7.95%to 3.86%,and the creep rate dε12000 decreased from 3.67×10-4 s-1 to 1.83×10-4 s-1.However,when the graphene content exceeded 8%,fiber agglomeration reduced the creep resistance.Ag-glomeration also inhibited the formation of extended-chain crystals of polyethylene macromolecules,causing the peak temperatures of the fiber's first and second endothermic peaks to decline.The Burgers model could predict the creep behavior of fibers with different graphene contents well,with a mean square error between the predicted and experimental results below 0.06.As the graphene content increased,the model's elastic modulus(EM,EK)and viscosity(ηM,ηK)parameters rose significantly,confirming graphene's inhibition on polymer chain slippage.As the graphene content increased,the fiber's elastic modulus rose from 130.3 GPa for pure fibers to 210.3 GPa for fibers with 15%graphene content.When the graphene content exceeded 8%,the experimental values of fiber elastic modulus were lower than the theoretical predictions of the Mori-Tanaka model.关键词
超高分子量聚乙烯纤维/石墨烯/Burgers模型/蠕变/Mori-Tanaka理论/预测/复合材料Key words
ultra-high molecular weight polyethylene fiber/graphene/Burgers model/creep/Mori-Tanaka theory/prediction/composites分类
通用工业技术引用本文复制引用
蒋波,王政委,成凤,赵丽丽,王庆娜,曹贻儒,李杰,苏家凯..石墨烯对超高分子量聚乙烯纤维蠕变行为的影响规律研究[J].复合材料科学与工程,2025,(10):53-59,7.基金项目
南山控股科研项目(2025-3-4) （2025-3-4）
