一种高断裂伸长率的宽温域阻尼聚氨酯弹性体及其制备方法
By introducing multiple hydrogen bonds and disulfide bonds into polyurethane elastomers and optimizing the formulation and process, a wide-temperature-range damping polyurethane elastomer with high elongation at break was prepared, solving the problems of insufficient damping performance and low elongation at break in the existing technology, and achieving excellent performance in various temperature scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF TECH
- Filing Date
- 2024-08-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing polyurethane elastomers have poor damping performance at both room temperature and high temperature, and low elongation at break, making it difficult to meet the needs of industrial applications in various temperature-dependent scenarios.
By introducing multiple hydrogen bonds and disulfide dynamic bonds, the formulation and process of polyurethane elastomers are optimized to prepare wide-temperature-range damping polyurethane elastomers with high elongation at break. A one-pot, multi-step synthesis process is adopted, using raw materials such as diisocyanate, polydiol, dihydroxydiphenyl disulfide, dimethylacetamide solvent, catalyst, and tartaric acid.
It achieves high damping performance (damping coefficient higher than 0.3) at temperatures above -20℃ and elongation at break of over 2300%, meeting the requirements of various working conditions. It possesses excellent damping performance and mechanical strength and is suitable for various temperature-varying scenarios.
Smart Images
Figure CN118834362B_ABST