摘要
聚碳酸酯(PC)与经臭氧化处理的POE共混后,其力学性能、低温冲击性能、抗溶剂性能以及冲击性能对壁厚的依赖性显著改善。在PC中加入经120 m in臭氧化处理的POE后,PC/POE(90/10)共混物的冲击强度与PC相比从24.6 kJ/m2提高到72.5 kJ/m2,低温(-20℃)冲击强度从18.8 kJ/m2提高到68.6 kJ/m2。在丙酮中浸泡4 h后,共混物的冲击强度与PC(降至3.2 kJ/m2)相比仅降至43.7 kJ/m2。未经改性处理的PC冲击强度从67.7 kJ/m2(壁厚3.2 mm)迅速下降到11.5 kJ/m2(壁厚6.4 mm);经120m in臭氧化处理,PC/POE(90/10)共混物的冲击强度从75.5 kJ/m2(壁厚3.2 mm)仅下降到58.0 kJ/m2(壁厚6.4 mm)。PC/POE(90/10)共混体系的加工流变性能与PC相比也得到改善。
The properties of PC can be remarkably improved after blending it with certain amount of ozonized POE. Compared with PC, the room temperature impact strength and low temperature (-20 ℃C) impact strength of PC/120 minutes ozonized PC)E(90/10) blend increases from 24.6 kJ/m^2 to 72.5 kJ/m^2 and from 18.8 kJ/m^2 to 68.6 kJ/m^2 respectively. After immersion in acetone 4 hours, the impact strength of PC decreases to 3.2 kJ/m^2, the PC/120 minutes ozonized POE(90/10) blend decreases to 43.7 kJ/m^2 only. Depending upon the sample thickness, the impact strength of PC decreases from 67.7 kJ/m^2(3.2 mm thickness) to 11.5 kJ/m^2(6.4 mm thickness), the PC/120 minutes ozonized POE(90/10) blend decreases from 75.5 kJ/m^2 to 58.0 kJ/m^2 only. Compared with PC, the apparent viscosity of PC/POE(90/10) blends lowers, the theological behavior gets better.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2006年第5期155-158,共4页
Polymer Materials Science & Engineering
基金
国家重点基础研究专项经费资助项目(G1999064809)
关键词
臭氧化
茂金属乙烯-1-辛烯共聚物
聚碳酸酯
ozonization
metallocene-catalyzed ethylene-1-octene copolymer (POE)
polycarbonate