| 超支化聚酯对以HTPB为基的聚氨酯胶片力学性能的影响 |
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| 引用本文： | 宋雪晶,罗运军,柴春鹏.超支化聚酯对以HTPB为基的聚氨酯胶片力学性能的影响[J].含能材料,2007,15(4):352-355. |
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| 作者姓名： | 宋雪晶 罗运军 柴春鹏 |
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| 作者单位： | 北京理工大学材料科学与工程学院,北京,100081 |
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| 摘 要： | 为了改善端羟基聚丁二烯(HTPB)复合固体推进剂粘合剂的力学性能,采用改性超支化聚酯与以HTPB为基的聚氨酯(PU)形成互穿网络.结果表明,改性超支化聚酯可以明显的提高HTPB胶片的力学性能,各代的超支化聚酯均在加入量为20%左右时,力学性能最好.其中加入20%第4代的改性超支化聚酯效果最为明显,其最大拉伸强度提高了3.36倍,达到2.3 MPa,最大延伸率提高了3.69倍,达到1860%.超支化聚酯的加入对HTPB胶片起到了很好的增强增韧作用.
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| 关 键 词： | 高分子材料 复合固体推进剂 HTPB 力学性能 超支化聚酯 互穿聚合物网络 超支化聚酯 HTPB 聚氨酯胶片 力学性能 影响 Polyurethane Elastomer Mechanical Properties Hyperbranched Polyester 增强增韧作用 延伸率 最大拉伸强度 效果 加入量 结果 互穿网络 改性 推进剂粘合剂 固体 二烯 端羟基 |
| 文章编号： | 1006-9941（2007）04-0352-04 |
| 收稿时间： | 2006/12/11 0:00:00 |
| 修稿时间： | 2006-12-112007-03-02 |
Effects of Hyperbranched Polyester on Mechanical Properties
of HTPB Polyurethane Elastomer |
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| SONG Xue-jing,LUO Yun-jun and CHAI Chun-peng.Effects of Hyperbranched Polyester on Mechanical Properties
of HTPB Polyurethane Elastomer[J].Chinese Journal of Energetic Materials,2007,15(4):352-355. |
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| Authors: | SONG Xue-jing LUO Yun-jun and CHAI Chun-peng |
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| Affiliation: | School of Materials Science and Engineering, Beifing Institute of Technology, Beijing 100081, China |
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| Abstract: | A novel interpenetrating polymer network, which based on modified hyperbranched polyester and HTPB polyurethane, was prepared for enhancing mechanical properties of HTPB based composite solid propellants. The results indicate that with the modified hyperbranched polyester added, the tensile strength and elongation of HTPB polyurethane elastomer improves obviously. Specially, when the content of modified hyperbranched polyester of generation 4 rises up to twenty percentage of the whole weight, the resultant elastomer has the best tensile strength and elongation, which increase 3.36 times and 3.69 times than pure elastomer, and reach 2.3 MPa and 1860% respectively. Therefore, the modified hyperbranched polyester can serve as a better modifer for HTPB propellants. |
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| Keywords: | polymer materials composite propellant HTPB mechanical properties hyperbranehed polyester interpenetrating polymer network |
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