摘要
通过熔融混炼制备了ＰＰ－Ｓｎ复合材料。用ＳＥＭ观察了复合材料的形态结构，用ＷＡＸＤ研究了ＰＰ的晶型结构，并对复合体系的加工性能、复合材料的力学性能、导电性能进行了研究。结果证实：Ｓｎ粒子是ＰＰ的成核剂并能诱发ＰＰ的β－晶型产生；Ｓｎ粒子加入能显著地提高ＰＰ加工性能；ＰＰ－Ｓｎ纳米粒子复合材料具有优良的电学性能。
The polypropylenetin (PPSn) nanocomposites were prepared by melt blending PP and Sn. The factors influencing the morphology of PPSn nanocomposites were studied by SEM. The structure of PP crystalline in PPSn composites was measured by WAXD. The processibility, volume resistivity and mechanical properties of PPSn nanocomposites were discussed. The results show that Sn is the nuclearing agents of PP crystallization and can improve notably the processibility of PP. It is found that there exists form crystalline phase structure of PP in PPSn composite. The amount of the form is related to the volume fraction and particle dimension D of Sn. It is also found that the electrically critical volume fractionc of Sn decreases notably with the decrease of D. The complex tensile moduli of PPSn composites increase with the increase of and the decrease of D. The tensile strentgh of PPSn nanocomposites is eleven times as high as that of PP and the izod impact toughness is 3.3 times as high as that of PP.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1999年第3期40-45,共6页
Acta Materiae Compositae Sinica
基金
国家教育部博士点基金
