摘要
本文研究了轻质ＣａＣＯ３（１＃）、铁酸酯偶联剂处理过的轻质ＣｈＣＯ３（２＃）、普通活性ＣａＣＯ３（３＃）和超细活性ＣａＣＯ３（４＃）分别填充硬质ＰＶＣ／ＣＰＥ合金材料的力学性能和加工流动性能。结果显示：３＃、４＃ＣａＣＯ３在填充量分别小于２０份和３０份时，对该合金的冲击韧性具有明显的补强作用，补强效果随它们表观团粒粒径的减小而提高；在高填充（大于３０份）时，填充合金材料的其他力学性能随３＃、４＃ＣａＣＯ３填充量变化的趋势大大减弱，因此，３＃、４＃ＣａＣＯ３对该合金具备高填充条件；２＃ＣａＣＯ３由于偶联剂上有机基因对合金大分子长链的隔离作用，在填充量小于２８份时，能有效地提高该填充合金材料的熔体指数。
Abstract:Mechanical properties and flow behaviors of the rigid PVC/CPE alloys filled respectively with last CaCO3 (1#), light CaCO3 treated by the coupling agent of titanate (2#), ordinary activated CaO3 (3#) and supelfine activated CaCO3 (4#) were studied. It showed that 3# and 4#CaCO3 fillers, when their contents were within respective 20 phr and 30 phr,enhanced the toughness of the filled alloys obviously and the improvement became bigger with the decrease of their apparent granular diameters. Meanwhile, the other mechanical propertier of the polpoer alloy material, if highly filled (more than 30 phr of filler content),became muth less innuenced by the variation of the 3# and 4# CaCO3 filler content.Therefore, 3# and 4# CaCO3 fillers are qualified for highly filling the above alloy. The result also Showed that, when the content was less than 28 phr, 2# CaCO3 filler could effectively raise the melt index of the filled alloy material. This attributed to the separation of the chains the organic groups in coupling agent.
出处
《塑料》
CAS
CSCD
1994年第2期15-19,34,共6页
Plastics
