将纳米/微米CaCO3按照不同比例混合,并以10％(质量分数)的填充量与聚丙烯(PP)熔融共混制备了CaCO3/PP复合材料.采用广角X射线衍射仪和差示扫描量热分析研究了各样品的PP结晶形态及非等温结晶动力学.结果表明,CaCO3粒子能够诱导β晶产生,且NCP2(纳米/微米CaCO3的质量比为1∶4)中β晶的含量达到最高值1.21％;NCP2的非等温结晶动力学参数和半结晶时间在冷却速率Φ＜15℃/min时相比单粒度分布CaCO3填充改性PP分别升高和降低;同一组份样品,随着结晶度增加,F(T)增加;相同结晶度下,NCP2的F(T)值最小;Kissinger法计算出PP及NCP2的结晶活化能分别为205.81 kJ/mol,201.01 kJ/mol.
参考文献
| [1] | 林水东,丁马太.PP/PP-g-MMA/M复合材料非等温结晶动力学研究[J].功能材料,2006(08):1303-1306. |
| [2] | Wentao Hao;Wen Yang;He Cai;Yiping Huang .Non-isothermal crystallization kinetics of polypropylene/silicon nitride nanocomposites[J].Polymer Testing,2010(4):527-533. |
| [3] | Zhang, J.;Han, B.;Zhou, N.-L.;Fang, J.;Wu, J.;Ma, Z.-M.;Mo, H.;Shen, J. .Preparation and characterization of nano/micro-calcium carbonate particles/polypropylene composites[J].Journal of Applied Polymer Science,2011(6):3560-3565. |
| [4] | Dittanet, P.;Pearson, R.A. .Effect of bimodal particle size distributions on the toughening mechanisms in silica nanoparticle filled epoxy resin[J].Polymer: The International Journal for the Science and Technology of Polymers,2013(7):1832-1845. |
| [5] | Jiwei Li;Xuegang Luo;Xiaoyan Lin .Preparation and characterization of hollow glass microsphere reinforced poly(butylene succinate) composites[J].Materials & design,2013(Apr.):902-909. |
| [6] | 史铁钧,吴德峰,王华林,徐鼐,周亚斌.两步法制备剥离型聚丙烯/蒙脱土纳米复合材料（Ⅱ）熔融行为及流变性能[J].化工学报,2005(09):1800-1804. |
| [7] | Liu TX.;Zhang HF.;Mo ZS. .Nonisothermal crystallization behavior of a novel poly(aryl ether ketone): PEDEKmK[J].Journal of Applied Polymer Science,1998(5):815-821. |
| [8] | 徐卫兵,梁国栋,杭国培,何平笙.聚丙烯/聚（丙烯-g-马来酸酐）/蒙脱土纳米复合材料结晶动力学研究[J].应用化学,2002(08):754-758. |
| [9] | Li J.;Zhou CX.;Gang W. .Study on nonisothermal crystallization of maleic anhydride grafted polypropylene/montmorillonite nanocomposite[J].Polymer Testing,2003(2):217-223. |
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