| 具有键合功能热塑性聚氨酯的表面性能 |
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| 引用本文： | 张文雨,李晋庆,罗运军. 具有键合功能热塑性聚氨酯的表面性能[J]. 高分子材料科学与工程, 2012, 28(2): 28-31 |
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| 作者姓名： | 张文雨 李晋庆 罗运军 |
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| 作者单位： | 1.北京理工大学材料科学与工程学院,北京,100081;2.北京理工大学材料科学与工程学院,北京100081／中国兵器科学研究院,北京100089 |
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| 基金项目： | 基础产品创新计划火炸药专项资助(A2220061373) |
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| 摘 要： | 通过反相气相色谱法（IGC）,采用非极性和极性探针分子研究了新型热塑性聚氨酯弹性体（DTPU）的色散表面自由能和表面Lewis酸碱性质,并与传统的推进剂用热塑性聚氨酯粘合剂（BTPU）做了对比。结果表明,DTPU与BTPU的色散表面自由能较为接近,并且随着温度的升高而线性降低;DTPU的酸常数Ka和碱常数Kb分别为0.09和0.48,而BTPU的酸常数Ka和碱常数Kb分别为0.06和0.37,DTPU的酸性和表面总的酸碱作用能力较大,与推进剂中高能固体填料具有更好的相互作用。
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| 关 键 词： | 反相气相色谱法 热塑性聚氨酯 表面自由能 酸碱性质 |
Surface Properties of Thermoplastic Polyurethane Elastomer with Bonding Functions |
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| Wenyu Zhang,Jinqing Li,Yunjun Luo. Surface Properties of Thermoplastic Polyurethane Elastomer with Bonding Functions[J]. Polymer Materials Science & Engineering, 2012, 28(2): 28-31 |
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| Authors: | Wenyu Zhang Jinqing Li Yunjun Luo |
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| Affiliation: | 1(1.School of Material Science and Engineering,Beijing Institute of Technology, Beijing 100081,China;2.Academy of Ordnance Science,Beijing 100089,China) |
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| Abstract: | Inverse gas chromatography(IGC) was employed to investigate the dispersive component of the surface free energy and the surface acid-base properties of the thermoplastic polyurethane elastomer(DTPU),surface properties of which were then compared with those of the traditional thermoplastic polyurethane elastomer(BTPU) that can be used as the propellant binder.It is found that the dispersive component of the surface free energy of DTPU is close to that of BTPU and the dispersive component of the surface free energy decreases linearly with increasing temperature.The Lewis acidic number Ka and the basic number Kb of DTPU are 0.09 and 0.48 respectively.The surface Lewis base number and total acid-basic ability of DTPU are higher than those of BTPU,whose Lewis acidic number is 0.06 and basic number is 0.37.Therefore,DTPU has better interactions with high-energy solid fillings. |
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| Keywords: | IGC thermoplastic polyurethane surface free energy Lewis acid-base properties |
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