| 4A分子筛对APP/PER膨胀阻燃剂协同作用的TGA/XPS |
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| 引用本文： | 韦平,王建祺.4A分子筛对APP/PER膨胀阻燃剂协同作用的TGA/XPS[J].高分子材料科学与工程,2003,19(3):179-181,186. |
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| 作者姓名： | 韦平 王建祺 |
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| 作者单位： | 北京理工大学化工与材料学院国家阻燃材料研究实验室,北京,100081 |
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| 摘 要： | APP／PER—4A与APP／PER体系的对比实验结果表明，TGA的第三热失重峰明显降低，XPS的C1s相对谱峰强度随温度升高明显增加。同时测定了Cox／Ca、Si／Al比随温度变化。表明4A分子筛在低温下对APP／PER膨胀阻燃体系发生催化酯化反应，在高温下Si/Al比升高，产生表面层动力学运动。酸的活性增加，有利于APP／PER膨胀阻燃体系。
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| 关 键 词： | 4A分子筛 APP／PER 膨胀阻燃剂 协同作用 TGA／XPS 热重分析／微观分析光电子能谱 聚磷酸铵／季戊四醇 |
| 文章编号： | 1000-7555(2003)03-0179-03 |
THE TGA/XPS STUDY ON THE SYNERGY OF 4A ZEOLITES IN THE INTUMESCENT FLAME RETARDANT APP/PER |
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| WEI Ping,WANG Jian qi.THE TGA/XPS STUDY ON THE SYNERGY OF 4A ZEOLITES IN THE INTUMESCENT FLAME RETARDANT APP/PER[J].Polymer Materials Science & Engineering,2003,19(3):179-181,186. |
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| Authors: | WEI Ping WANG Jian qi |
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| Abstract: | The comparative study on APP (ammonium polyphosphate)/PER (pentaerythritol) and 4A APP/PER flame retardant systems was reviewed. It shows that the intensity of the third peak in TGA (thermogravimetric analysis) is reduced evidently and the relative intensity of C 1s spectra in XPS increases dramatically with temperature. In addition, XPS data on the C ox /C a and Si/Al ratio in system of 4A APP/PER also alteres with temperature. It is indicated that 4A zeolite catalyzes the esterification reaction between APP and PER at lower temperature while the Si/Al ratio of the zeolite is growing at higher temperature leading to dynamics movement on the surface and enhancement of the acid activity, in favor of APP/PER flame retardant systems. |
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| Keywords: | A zeolite TGA/XPS APP/PER flame retardant |
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