| 聚乳酸/乙烯-醋酸乙烯酯共聚物/碳酸钙复合材料的性能研究 |
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| 引用本文： | 杨刚;李怀栋;窦强.聚乳酸/乙烯-醋酸乙烯酯共聚物/碳酸钙复合材料的性能研究[J].中国塑料,2011,25(5):39-45. |
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| 作者姓名： | 杨刚;李怀栋;窦强 |
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| 作者单位： | 南京工业大学材料学院 南京工业大学 |
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| 摘 要： | 采用熔融共混法制备了聚乳酸/乙烯-醋酸乙烯酯共聚物/碳酸钙（PLA/EVA/CaCO3）复合材料，利用差示扫描量热仪、X射线衍射仪、偏光显微镜、扫描电子显微镜、力学性能测试和热变形温度测试等手段，研究了EVA和CaCO3对复合材料的结晶性能、断面形貌、力学性能和耐热性能的影响。结果表明，EVA 具有增韧作用，但降低了复合材料的强度和耐热性；而CaCO3可以提高复合材料的强度、韧性、结晶性能和耐热性能；CaCO3与EVA的加入对PLA有协同增韧作用，且不改变PLA的晶型；当PLA/EVA=90/10，加入10 %（质量分数，下同）的CaCO3时，复合材料有最佳的综合性能。
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| 关 键 词： | 复合材料 耐热性能 聚乳酸 碳酸钙 乙烯-醋酸乙烯酯共聚物 结晶性能 力学性能 |
| 收稿时间： | 2011-1-5 |
Study on the Properties of Poly(lactic acid)/Ethylene Vinyl Acetate/Calcium Carbonate Composites |
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| YANG Gang,LI Huaidong,DOU Qiang.Study on the Properties of Poly(lactic acid)/Ethylene Vinyl Acetate/Calcium Carbonate Composites[J].China Plastics,2011,25(5):39-45. |
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| Authors: | YANG Gang LI Huaidong DOU Qiang |
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| Affiliation: | YANG Gang,LI Huaidong,DOU Qiang(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Poly(lactic acid)(PLA)/ethylene vinyl acetate(EVA)/CaCO3 composites were prepared via melt blending using a twin screw extruder.The effects of CaCO3 and EVA on crystallization,fracture surface,mechanical properties,and heat resistance of the composite were investigated by means of DSC,XRD,PLM,SEM,mechanical property and heat distortion temperature tests.The toughness of the composite was increased,but the stiffness and heat resistance were decreased by the addition of EVA.While the stiffness,toughness,cryst... |
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| Keywords: | poly(lactic acid) ethylene vinyl acetate calcium carbonate composite crystallization mechanical property heat resistance |
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