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以不同含量的赤泥(Red Mud)作为成核剂改性聚丙烯(PP),采用差示扫描量热仪(DSC)研究了PP/Red Mud复合材料的非等温结晶行为,并分析了基于Jeziorny理论和莫志深理论的结晶动力学,最后利用Kissinger法计算结晶迁移活化能(ΔE)。结果表明:PP中加入Red Mud后,复合材料的结晶起始温度To、结晶峰值温度Tp均有所提高;与纯PP相比,PP/Red Mud复合材料的半结晶时间t1/2和F(T)升高,而结晶速率常数Zc降低。当Red Mud含量为10%时,t1/2最小,Zc最大,说明加入10%的Red Mud对PP的成核作用最明显。当Red Mud质量分数为20%时,复合材料的ΔE最小。
PP with different contents of Red Mud as nucleating agent, non-isothermal crystallization behavior of PP / Red Mud composites were studied by differential scanning calorimetry (DSC) Jeziorny theory and Mo Chi deep theory of the crystallization kinetics, and finally calculated using the Kissinger crystallization activation energy (ΔE). The results show that the crystallization onset temperature To and the crystallization peak temperature Tp of PP / Red Mud composites increase with the addition of Red Mud. Compared with pure PP, the half crystallization time t1 / 2 and F T) increases, while the crystallization rate constant Zc decreases. When Red Mud content is 10%, t1 / 2 is the smallest and Zc is the largest, which indicates that the nucleation of PP by 10% Red Mud is the most obvious. When the mass fraction of Red Mud is 20%, the composite has the smallest ΔE.