【摘要】 研究了纳米CaCO3 /EPO/PP复合材料的力学性能、熔体流变性能及纳米CaCO3 粒子在PP基体中的分散状况。结果表明 :弹性体EPO对PP有很好的增韧效果 ,当EPO用量为 4份时 ,PP从脆性断裂转变成韧性断裂 ;当EPO用量为 10份时 ,PP复合材料的室温和低温缺口冲击强度均有大幅度的提高。在EPO/PP复合材料中加入纳米CaCO3不仅可以显著提高复合材料的室温和低温缺口冲击强度 ,而且可显著提高复合材料的弯曲弹性模量和MFR ,改善复合材料的加工流动性能 ;纳米CaCO3 粒子在PP中达到了纳米级分散更多还原

【Abstract】 The mechanical and rheological properties of nano-meter CaCO 3/EPO/PP composites and the dispersion of nano-meter CaCO 3 in PP matrix were studied. The results showed EPO had good toughening effect on PP, when the content of EPO was 4 phr, PP changed from brittle fracture to tough fracture;when the content was 10 phr, the notched impact strength of the composite at room and low temperature increased greatly. The addition of nano-meter CaCO 3 to the EPO/PP composite could not only improve the impact strength at room and low temperature, but also the bending modulus and the MFR of EPO/PP blend, resulted in improving of the processability of the composite. CaCO 3 nano-meter particles were well dispersed in PP matrix at nano-meter scale.更多还原