| 辐照法制备的醋酸乙烯酯/蒙脱土纳米复合材料与HDPE和PA6共混物的研究 |
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| 引用本文： | 丁运生,张志成.辐照法制备的醋酸乙烯酯/蒙脱土纳米复合材料与HDPE和PA6共混物的研究[J].高等学校化学学报,2004,25(7):1351-1354. |
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| 作者姓名： | 丁运生 张志成 |
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| 作者单位： | 1. 中国科学技术大学化学与材料学院, 合肥 230026;
2. 合肥工业大学化学和工程学院, 合肥 230009 |
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| 基金项目： | 教育部博士点基金 (批准号 :2 0 0 0 0 3 5 80 5 )资助 |
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| 摘 要： | 利用γ射线辐射引发醋酸乙烯酯(VAc)在蒙脱土(MMT)中的原位插层聚合,X射线衍射测试与透射电子显微镜观察结果表明,PVAc/MMT复合材料为纳米复合材料.其与HDPE和PA6的共混物的扫描电镜测试结果表明,PVAc-MMT纳米复合物以微胶囊的形式存在于PVAc-MMT/HDPE/PA6共混物中,均匀分散的PVAc-MMT纳米复合物改变了复合材料的相结构.热失重测试结果显示,PVAc-MMT/HDPE/PA6的起始分解温度明显高于PVAc/HDPE/PA6,热失重过程差异较大,MMT纳米粒子的存在改变了材料的结构,使材料热性能得到了改善.在PVAc-MMT/HDPE/PA6共混物中,PVAc-MMT具有增强与增韧作用.
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| 关 键 词： | &gamma 射线辐射引发 纳米复合物 相结构 热稳定性 力学性能 |
| 文章编号： | 0251-0790(2004)07-1351-04 |
| 收稿时间： | 2003-06-05 |
Studies on the Blend Composed of HDPE,PA6 and PVAc-Montmorillonite Nanocomposite Prepared via γ-ray Irradiation |
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| DING Yun-Sheng ,ZHANG Zhi-Cheng.Studies on the Blend Composed of HDPE,PA6 and PVAc-Montmorillonite Nanocomposite Prepared via γ-ray Irradiation[J].Chemical Research In Chinese Universities,2004,25(7):1351-1354. |
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| Authors: | DING Yun-Sheng ZHANG Zhi-Cheng |
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| Institution: | 1. School of Chemistry and Materials, University of Science and Technology of China, Hefei 230026, China;
2. College of Chemistry and Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The in suit intercalated polymerization of vinyl acetate(VAc)-montmorillonite(MMT) was initiated via γ-ray irradiation and PVAc-MMT composite was obtained. PVAc was also prepared by the same way. X-ray diffraction(XRD) results show that the PVAc-MMT composite is a kind of nanocomposite, and transmission electron microscopy(TEM) observation gives the same result directly. Ternary blend composed of PVAc-MMT/HDPE/PA6(PMHP) was prepared by melt-mixing way, and scanning electron microscopy(SEM) testing result reveals that the PVAc-MMT nanocomposite dispersed in the PMHP for a kind of capsule particles. Thermogravimetric analysis(TGA) results show that the thermal stability of PMHP is much greater than that of PVAc/HDPE/PA6(PHP) blend because of the phase structure change of PMHP and the existence of PVAc-MMT nanocomposite in that of the ternary blend of PMHP, for the same reason the mechanical properties of PMHP is better than HDPE and PHP blend. |
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| Keywords: | ray irradiation initiation Nanocomposite Phase structure Thermal stability Mechanical property |
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