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| 高速铁路桥梁用低模量聚氨酯伸缩缝 | |
| 引用本文： | 张梅,庞金录,杨光付,姜志国. 高速铁路桥梁用低模量聚氨酯伸缩缝[J]. 化学推进剂与高分子材料, 2011, 9(3): 69-72 |
| 作者姓名： | 张梅 庞金录 杨光付 姜志国 |
| 作者单位： | 1. 北京化工大学材料科学与工程学院,北京,100029 2. 北京北方车辆集团有限公司,北京,100072 3. 中国人民解放军91872部队,北京,102442 |
| 摘 要： | 以组合聚醚多元醇和甲苯二异氰酸酯(TDI)制备的预聚体,与混合扩链剂,制备了一种双组分低模量高伸长率聚氨酯伸缩缝.经过试验可知n(NCO):n(OH)为1.05:1,硬段质量分数为14%～16%时,制备的伸缩缝材料,达到了所需聚氨酯伸缩缝的各项要求. |
| 关 键 词： | 高铁桥梁 聚氨酯 伸缩缝 |
Expansion Joint of Low Modulus Polyurethane in High-Speed Railway Bridge |
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| ZHANG Mei,PANG Jinlu,YANG Guangfu,JIANG Zhiguo. Expansion Joint of Low Modulus Polyurethane in High-Speed Railway Bridge[J]. Chemical Propellants & Polymeric Materials, 2011, 9(3): 69-72 | |
| Authors: | ZHANG Mei PANG Jinlu YANG Guangfu JIANG Zhiguo |
| Affiliation: | ZHANG Mei1,PANG Jinlu2,YANG Guangfu3,JIANG Zhiguo1(1.College of Materials Science and Engineering,Beijing University of Chemical and Technology,Beijing 100029,China,2.Beijing North Vehicle Group Corporation,Beijing 100072,3.Unit 91872 of PLA,Beijing 102442,China) |
| Abstract: | The prepolymer was prepared by combined polyether polyols and toluene diisocyanate(TDI).A polyurethane expansion joint with two components,low modulus and high elongation was synthesized by above prepolymer and a blend of chain extenders.It is found by the experiment that the expansion joint material can meet the various requirements of required polyurethane expansion joint when n(NCO):n(OH)=1.05:1,mass fraction of the hard segment is 14%~16%. |
| Keywords: | high-speed railway bridge polyurethane expansion joint |
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