【摘要】 采用双螺杆熔融混合造粒和单螺杆挤出制样的方法制备了纳米有机蒙脱土(OMMT)/PP复合材料。通过透射电子显微镜(TEM)及力学性能测试研究了复合材料的力学性能及纳米OMMT粒子的分散状况。结果表明,在纳米OMMT/PP复合体系中,纳米OMMT在基体中达到纳米级分散,同时,聚合物大分子链插入到纳米OMMT的层间,纳米OMMT的加入,不但使冲击强度显著提高,而且使弯曲弹性模量显著提高。更多还原

【Abstract】 Nano-meter organ o-mo ntmorillonite （OMMT）/PP composite was prep ared by means of melt blending and extrusion by the using of twin-screw extruder and si ngle screw extruder respectively. The mech anical properties of the prepared comp osite and the dispersion of the particle of Nano-mwter CaCO₃ were investigated by means of TEM and mechanical tests. The re sults showed that the OMMT particles in the matrix were dispersed in nano-meter scale and the chain of the macromol ecule had intercalated the interlaminar of the nano-OMMT, and not only the impac t property but also the bending modulus of t he system were evidently increased by adding nano-OM MT.更多还原