| 聚丙烯／镧化合物改性超细碳酸钙复合材料的研究 |
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| 引用本文： | 郭涛,王炼石.聚丙烯／镧化合物改性超细碳酸钙复合材料的研究[J].中国塑料,2004,18(7):23-27. |
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| 作者姓名： | 郭涛 王炼石 |
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| 作者单位： | 华南理工大学材料学院 广东广州510640
(郭涛)，华南理工大学材料学院 广东广州510640(王炼石) |
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| 摘 要： | 采用熔融共混法制备了聚丙烯/镧化合物改性超细碳酸钙(PP/UCaCO3-La^3 )和聚丙烯/超细碳酸钙(PP/UCaCO3)两种复台材料.力学性能测试表明：复合材料的冲击强度随着填料用量的增加先增后减，拉伸强度则递减.PP/UCaCO3-La^3 的冲击强度高于PP/UCaCO3，可提高至PP的3倍以上?透射电镜和扫描电镜分析表明：UCaCO3-La^3 在PP中具有很好的分散性，随着镧化合物用量的增加而进一步改善.DSC分析表明，UCaCO3-La^3 可显著提高复合材料的结晶温度和结晶度，结晶性能的改善是材料冲击强度提高的重要原因.热重分析结果表明：与UCaCO3相比，UCaCO3-La^3 对提高PP热稳定性的贡献更为显著.
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| 关 键 词： | 镧化合物 超细碳酸钙 聚丙烯 力学性能 结晶性能 热稳定性 |
Composites of PP and Ultra-fine CaCO_3 Modified by La~(3 ) Compound |
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| GUO Tao,WANG Lian-shi.Composites of PP and Ultra-fine CaCO_3 Modified by La~(3 ) Compound[J].China Plastics,2004,18(7):23-27. |
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| Authors: | GUO Tao WANG Lian-shi |
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| Abstract: | Composites of PP with lanthanum compound modified ultra-fine CaCO 3 (PP/UCaCO 3-La 3 ) and with unmodified CaCO 3 (PP/UCaCO 3) were prepared via melt extrusion. Transmission electron microscope and scanning electron microscope showed that the modification of lanthanum compound improved the dispersion of CaCO 3 in PP matrix. The degree of crystallinity and crystallization temperature of PP were well increased by the lanthanum compound modified filler, which resulted in the increase in impact strength and thermal stability. |
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| Keywords: | compound of lanthanum ultra-fine calcium carbonate polypropylene mechanical property crystallization property heat stability |
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