【摘要】 研究了含有不同含量成核剂的聚丙烯的结晶行为对其力学性能的影响。结果表明 ,当成核剂含量从 0增至 0 .8% (质量 )时 ,树脂的拉伸强度和弯曲强度提高了 15 % ,弯曲模量增加了 35 % ,结晶温度提高了 10℃ ,由非线性 Volterra积分方程得到的成核密度提高了 10 6倍 ,而且成核聚丙烯的成核密度与其材料的力学性能之间存在着线性关系 ,即随着成核密度的增大 ,材料的拉伸和弯曲性能呈线性的增大更多还原

【Abstract】 The effect of concentration of nucleating agent on crystallization behaviors and mechanics properties of polypropylene has been investigated in this paper. Results show that with the concentration of nucleating agent increasing from 0 to 0.8%, tensile intension and fiexural strength of nucleated polypropylene resin increases 15%, flexural modulus increases 35% and crystallization peak temperature increases 10 ℃ as well as nucleation density calculated from nonlinear Volterra integral equation increases 10 6 times. Moreover, there exits a linear equation between nucleation density and mechanics properties. The mechanics properties increase linearly with the increase of nucleation density.更多还原