CAJ | 학술논문

利用球磨反应对纳米SiO2表面进行处理，用以制备超高分子量聚乙烯(PE-UHMW)/SiO2复合材料，并通过力学性能测试、X射线衍射测试及扫描电子显微镜研究分析复合材料的力学性能、耐热性、结晶度、微晶尺寸、缠结点密度等。结果表明，与纯PE-UHMW相比，经过纳米SiO2改性的PE-UHMW材料，其微晶尺寸降低、缠结点密度增大，非结晶区与结晶区之间的应力传递增强，界面之间能量吸收能力增强，使PE-UHMW/SiO2复合材料的耐热性能、韧性和刚性均得到了明显的改善。
이용구마반응대납미SiO2표면진행처리，용이제비초고분자량취을희(PE-UHMW)/SiO2복합재료，병통과역학성능측시、X사선연사측시급소묘전자현미경연구분석복합재료적역학성능、내열성、결정도、미정척촌、전결점밀도등。결과표명，여순PE-UHMW상비，경과납미SiO2개성적PE-UHMW재료，기미정척촌강저、전결점밀도증대，비결정구여결정구지간적응력전체증강，계면지간능량흡수능력증강，사PE-UHMW/SiO2복합재료적내열성능、인성화강성균득도료명현적개선。
The surface of SiO2 nanoparticles was treated via the ball milling reaction and PE-UHMW/SiO2 composites were thus prepared. The mechanical properties, heat resistance, crystallinity, crystallite size, density of entanglement points were determined by mechanical properties, X ray diffraction and SEM test. The results indicate that compared with untreated PE-UHMW, the crystallite size of PE-UHMW modified by nano-SiO2 decrease, while the node density increase. The stress transmission between amorphous and crystalline regions and the interface energy absorption capability of PE-UHMW/SiO2 composites also increase. So the heat resistance, toughness and rigidity properties of PE-UHMW/SiO2 composites are obviously improved.