| MDI吸湿性的机理研究 |
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| 引用本文： | 刘海蓉,周青,李淑杰,丁建生.MDI吸湿性的机理研究[J].化学推进剂与高分子材料,2011,9(2):60-63. |
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| 作者姓名： | 刘海蓉 周青 李淑杰 丁建生 |
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| 作者单位： | 1. 北京科聚化工新材料有限公司分析中心,北京昌平,102200
2. 国家聚氨酯工程技术研究中心,山东烟台,264002 |
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| 摘 要： | 主要讨论了MDI的吸湿机理及其表征方法,利用了简单的天平称重法得到不同温湿度下质量变化曲线,从而推算出MDI与水反应的表观活化能,并利用FT-IR对表面吸湿机理进行讨论.结果显示MDI表面吸湿后聚脲之间以氢键相互连接,以形成难溶的固态致密层.
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| 关 键 词： | MDI 吸湿 FT-IR 氢键 |
Study on Moisture Absorption Mechanism of MDI |
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| LIU Hairong,ZHOU Qing,LI Shujie,DING Jiansheng.Study on Moisture Absorption Mechanism of MDI[J].Chemical Propellants & Polymeric Materials,2011,9(2):60-63. |
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| Authors: | LIU Hairong ZHOU Qing LI Shujie DING Jiansheng |
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| Affiliation: | LIU Hairong1,ZHOU Qing1,LI Shujie1,DING Jiansheng2 (1.Analytical Center of Beijing Keju Chemical Materials Co.,Ltd.,Beijing 102200,China,2.National Polyurethane Engineering Research Center,Yantai 264002,China) |
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| Abstract: | The moisture absorption mechanism of MDI and its characterization method are mainly discussed.The mass change curves at different temperatures and humidity were obtained by using simple balance weighing method and the apparent activation energy of the reaction between MDI and water was further calculated.The mechanism of surface moisture absorption was discussed by FT-IR.The results show that the insoluble solid dense layer is formed through hydrogen bond connecting between the polyureas formed after absorb... |
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| Keywords: | MDI FT-IR |
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