| 氧化镧对HDPE热氧化分解行为的影响 |
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| 引用本文： | 李红山,张艺,许家瑞. 氧化镧对HDPE热氧化分解行为的影响[J]. 化学研究与应用, 2008, 20(10) |
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| 作者姓名： | 李红山 张艺 许家瑞 |
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| 作者单位： | 嘉应学院化学系,广东,梅州,514015;中山大学化学与化学工程学院,聚合物复合材料及功能材料教育部重点实验室材料科学研究所,广东,广州,510275;中山大学化学与化学工程学院,聚合物复合材料及功能材料教育部重点实验室材料科学研究所,广东,广州,510275 |
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| 摘 要： | 聚合物改性是聚合物结构与性能研究中的一个重要领域,而稀土元素具有4f0-145dl-106s2的电子构型,由于4f轨道的特殊性和5d轨道的存在,稀土离子具有丰富的电子能级,离子半径较大,电荷较高,又有较强的络合能力,可对多种聚合物的热稳定性产生影响[1,7].
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| 关 键 词： | 氧化镧 HDPE 热稳定性 |
Effect of lanthanum oxide on the thermo-oxidative degradation behavior of HDPE |
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| LI Hong-shan,ZHANG Yi,XU Jia-rui. Effect of lanthanum oxide on the thermo-oxidative degradation behavior of HDPE[J]. Chemical Research and Application, 2008, 20(10) |
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| Authors: | LI Hong-shan ZHANG Yi XU Jia-rui |
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| Abstract: | The effect of lanthanum oxide on thermo-oxidative degradation behavior of HDPE has been studied by thermogravimetry.With addition of lanthanum oxide,the temperature at 5% weight loss can be dramatically enhanced.The results indicated that the apparent active energy of thermo-oxidative degradation reaction of HDPE was increased within 50% conversion rate of weight loss when lanthanum oxide in presence.Lanthanum oxide is not involved directly in the main chain scission of HDPE,which show the effect of lanthanum oxide is related with oxygen. |
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| Keywords: | HDPE |
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