聚丙烯/纳米氮化硅复合材料的等温结晶形态  

Isothermal Crystallization Morphology of Polypropylene/Nano-Silicon Nitride Composites

作　　者：郝文涛[1] 胡嘉维[1] 罗明灯[1] 杨文[1] 

机构地区：[1]合肥工业大学化工学院可控化学与材料化工安徽省重点实验室,合肥230009

出　　处：《塑料助剂》2010年第1期49-52,共4页Plastics Additives

摘　　要：研究了纳米氮化硅材料对于均聚聚丙烯等温结晶形态的影响。结果表明:1)纳米氮化硅作为成核剂效果明显,随着纳米氮化硅的加入,聚丙烯晶体尺寸减小,晶体完善程度下降;2)随着结晶时间延长,晶体尺寸有逐渐变大的趋势,晶体完善程度也在提高;3)随着结晶温度提高,晶体完善程度提高;4)在纳米氮化硅含量为2%(质量分数)时,晶体尺寸相对最小。The effect of nano-silicon nitride material on the isothermal crystallization morphology of homo-polypropylene has been investigated. The results show that： 1） nano-silicon nitride is a good nucleating agent. With the addition of silicon nitride, the size of the polypropylene crystals decreases and the crystals turn to be imperfect; 2） as the crystallization time increases, the crystal size become larger and the morphology is more perfect; 3） crystals obtained at higher temperatures are more perfect than that obtained at lower temperatures; 4） when the content of nano-silicon nitride is 2%, the crystal size is the smallest one compared with the crystal size of the other composites with more and less content of silicon nitride.

关 键 词：聚丙烯 纳米氮化硅 等温结晶 成核剂 形态 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业]