以未处理和偶联剂KH550处理的C纤维、SiC纤维和Al2O3纤维为填充材料，以超高分子量聚乙烯（UHMWPE）为基体，用模压成型法制备了三种纤维改性UHMWPE复合材料，对复合材料的硬度、弯曲强度、拉伸强度和断裂伸长率进行了实验研究，用光学显微镜观察分析了拉伸断面形貌。结果表明，未处理的C纤维、SiC纤维和Al2O3纤维改性UHMWPE复合材料硬度较纯UHMWPE分别提高了11．76％、21％和6％。经KH550处理的三种纤维改性UHMWPE复合材料弯曲强度和拉伸强度均优于未处理纤维的复合材料，已处理的SiC纤维／UHMWPE复合材料弯曲强度和拉伸强度提高较大。KH550处理的三种纤维与UHMWPE基体界面粘接紧密，未处理纤维与UHMWPE基体粘接较差。
Ultra-high molecular-weight polyethylene(UHMWPE) composites filled with untreated and treated C fiber, SiC fiber and Al2O3 fiber were prepared by molding method. The hardness, bending strength, tensile strength and wear performances of the composites were studied. The tensile fractore-surface morphology of composities were studied too. The results show that the hardness of composite filled with untreated C fiber, SiC fiber, Al2O3 fiber is 11.76 %, 21% and 6 % higher than that of pure UHMWPE respectively. The bending strength and tensile strength of UHMWPE composites filled with 3 kinds of fiber treated by coupling agent are better than those of the untreated fibers composites, and SiC fiber/UHMWPE is the best composite. The treated fibers show good interfacile adhesion UHMWPE which untreated fibers do not.
参考文献
| [1] | Xiong DS.;Ge SR. .Friction and wear properties of UHMWPE/Al2O3 ceramic under different lubricating conditions[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2001(1):242-245. |
| [2] | B. P. Chang;Hazizan Md Akil;Ramdziah Md. Nasir .Mechanical and Antibacterial Propertiesof Treated and Untreated Zinc Oxidefilled UHMWPE Composites[J].Journal of Thermoplastic Composite Materials,2011(5):653-667. |
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