稀土化合物对聚丙稀结晶形态与热稳定性的影响  

Effects of Rare Earth Compound on the Crystalline Morphology and Thermostability of PP

作　　者：邓庆仪[1] 喻淼 黄少慧[1] 

机构地区：[1]中山大学高分子研究所,广州510275

出　　处：《中山大学学报（自然科学版）》1999年第5期121-123,共3页Acta Scientiarum Naturalium Universitatis Sunyatseni

摘　　要：采用ＴＧＡ 研究了稀土化合物对聚丙稀的热稳定作用． 通过电镜观察了经铬酸蚀刻的ＰＰ球晶在不同稀土化合物含量下的变化． 用Ｘ 射线衍射法比较了加入稀土化合物前后ＰＰβ结晶峰及结晶度的变化． 结果表明， 在ｗ （ＰＰ） ／ ｗ （ＲＥＣ） ＝ １００／１－０ ～１００／２－０ 范围内， ＰＰ热稳定性较好．Thermostabilty of PP with rare earth compound(REC) was studied by TGA. Morphologies of etched PP/REC samples were also observed. Comparsion of β crystal peak on XRD spectra between PP and PP/REC was made. It was found that the thermostability of PP could be improved by REC. When the composition fell into the range of PP/REC=100/1 0～100/2 0, the samples had higher 5% weight lost temperature than others. Results from XRD spectra showed that REC could increase the crystallinity of PP.

关 键 词：稀土化合物 聚丙稀 热稳定性 结晶形态 

分 类 号：O632.12[理学—高分子化学] O614.33[理学—化学]