健美操器械用改性超高相对分子质量聚乙烯纤维

Performance Characterization of Modified Ultra-high Molecular Weight Polyethylene Fibers for Aerobics Equipment

为进一步有效优化健美操等体育器械综合性能,本文以氨丙基三乙氧基硅烷为改性剂改性制备了健美操器械用超高相对分子质量聚乙烯纤维,并对其性能进行了测试表征。结果发现,相较于未改性超高相对分子质量聚乙烯纤维,以氨丙基三乙氧基硅烷改性的超高相对分子质量聚乙烯纤维熔融峰温较高,DSC结晶度与XRD结晶度较低,断裂强度、弹性模量、断裂伸长率也相对较小,而界面剪切强度相对较大;以氨丙基三乙氧基硅烷改性的超高相对分子质量聚乙烯纤维拥有良好的热稳定性与耐磨性;随着蠕变温度升高,氨丙基三乙氧基硅烷改性对超高相对分子质量聚乙烯纤维抗蠕变性能的改善效果越来越突出。

In order to further optimize the comprehensive performance of sports equipment such as aerobics,this article uses aminopropyltriethoxysilane as a modifier to prepare ultra-high relative molecular weight polyethylene fibers for aerobics equipment,and its properties are tested and characterized.The results show that compared to unmodified ultra-high molecular weight polyethylene fibers,ultra-high molecular weight polyethylene fibers modified with aminopropyltriethoxysilane have higher melting peak temperatures,lower DSC and XRD crystallinity,lower fracture strength,elastic modulus,and elongation at break,while interface shear strength is relatively higher;UHMWPE fibers modified with aminopropyl triethoxysilane have good thermal stability and wear resistance;as the creep temperature increasing,the improvement effect of aminopropyltriethoxysilane modification on the creep resistance of UHMWPE fibers become increasingly prominent.