具有梯度硬度聚氨酯弹性体的合成及其水声性能研究
Study on synthesis of polyurethane elastomers with gradient hardness and their hydroacoustic performance
李鹏翔 1陈棕文 1林国兴 1刘鹏征 1李禹函 2程伟1
作者信息
- 1. 洛阳船舶材料研究所,河南洛阳 471023
- 2. 郑州大学化学学院,河南郑州 450001
- 折叠
摘要
将聚丁二烯接枝物与聚丙二醇复配引入聚氨酯预聚物,合成出具有支化分子拓扑结构特征以及高温下肟-氨基甲酸酯键动态性的封闭型聚氨酯大分子,通过对体系固化比例的调整实现弹性体硬度的调控,并验证了合成出的一系列具有硬度梯度的弹性体材料具有理想的工艺性能以及耐老化性能.对合成出的聚氨酯弹性体进行水声吸声性能实测,对不同水压下具有硬度梯度材料的声学性能变化规律进行研究,为聚氨酯弹性体水声材料设计提供参考.
Abstract
Polybutadiene grafts and polypropylene glycol were compounded into polyurethane prepolymers to synthesis the blocked polyurethane macromolecules with branched molecular topology characteristics and dynamic oxime-carbamate bond at high temperatures.The hardness of the elastomers was regulated by adjusting the curing ratio of the system,and it was verified that a series of synthesized elastic materials with hardness gradient had desirable process performance and aging resistance.The synthesized polyurethane elastomers were measured for hydroacoustic absorption performance,and the change rule of acoustic performance of the materials with hardness gradient was studied under different hydraulic pressures,which provided a reference for the design of polyurethane elastomer hydroacoustic materials.
关键词
硬度/聚氨酯弹性体/声学性能Key words
hardness/polyurethane elastomer/acoustic performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据