摘要
选用经过NDZ-101处理的Ti O2和低密度聚乙烯(LDPE)共混,利用同向双螺杆挤出机制备了Ti O2/低密度聚乙烯复合材料,研究了Ti O2不同填充量对LDPE材料的热性能、力学性能以及微观形貌的影响。结果表明:Ti O2填充后复合材料的力学性能优于填充前的LDPE材料。填充量为5%时,拉伸强度和断裂伸长率分别由填充前的16.80 MPa、236.24%增加到17.75 MPa、238.21%。此外,Ti O2的加入提高了LDPE的热稳定性,促进了LDPE的结晶,但降低了其结晶程度。扫描电镜显示Ti O2均匀分散在LDPE基体中。
The composites were prepared by blending low density polyethylene(LDPE) and titanium dioxide(Ti O2) treated with titanate coupling agent through the co-rotating twin-screw extruder. The influence of Ti O2 content on thermal behavior, mechanical properties and microstructure of the composites were studied. The results show that the mechanical properties are better than the unfilled material. When the Ti O2 amount is 5.0%, the tensile strength and elongation at break increase from 16.80 MPa to 17.75 MPa and 236.24% to 238.21% respectively. Moreover, Ti O2 filler can also modify the thermal stability of the composites material and promote the crystallization of LDPE, but can decrease LDPE crystallinity. Scanning electron microscopy shows that Ti O2 can well disperse in LDPE matrix.
出处
《辽宁化工》
CAS
2016年第1期22-23,123,共3页
Liaoning Chemical Industry
基金
辽宁省科技厅自然科学基金资助项目(项目号:2014020119)
