摘要
研究了稀土稳定剂对聚氯乙烯的动、静态热稳定性能、力学性能、加工流变性能的影响,并和铅盐稳定剂相比较。结果表明稀土稳定剂能增加制品表面光洁度,其静态热稳定时间为50min,小于铅盐体系,但能满足工业生产要求。等量氯化聚乙烯(CPE)和纳米CaCO3加入情况下,稀土稳定剂体系冲击强度是铅盐体系的4.3倍,拉伸强度相当。稀土稳定剂体系的塑化时间、塑化温度和平衡扭矩分别为2.5min、177℃、19.0N·m,分别小于同配方铅盐体系的4.3min、184℃、19.5N·m。在满足制品使用性能要求下,稀土稳定剂体系可减少50%CPE用量和增加1倍CaCO3用量,使配方成本下降,具有良好的应用前景。
The dynamic and static heat stability, mechanical properties and reheological behavior of poly(vinyl chloride)(PVC) stabilized with rare earth stabilizer were studied and compared with those with lead salt system. The results indicated that the articles with rare earth stabilizer achieved a higher brightness. The static heat stabilizing time of rare earth system was about 50 min, though less than that of lead salt system, yet was long enough for the production. At the same content of chlorinated polyethylene (CPE) and nano-CaCO3 in formulation, the impact strength of rare earth stabilizer system was 4.3 times higher than that of lead salt system, and their tensile strengths were comparable. The fusion time, fusion temperature, and equilibrium torque of rare earth stabilizer system were 2.5 min, 177 ℃, and 19.0 N·m, respectively,which were less than those of lead salt system, 4.3 min, 184 ℃ and 19.5 N·m. To achieve the same level of performance of the products, the rare earth stabilizer system can save 50 % CPE and accommodate two-fold of nano-CaCO3 compared with lead salt system, as a result the cost can be remarkedly reduced.
出处
《中国塑料》
CAS
CSCD
北大核心
2005年第4期70-74,共5页
China Plastics
关键词
聚氯乙烯
稀土稳定剂
力学性能
流变性能
poly(vinyl chloride)
rare earth stabilizer
mechanical property
rheological behavior
