Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
Beijing Engineering Research Center of Advanced Elastomers, Beijing University of Chemical Technology, Beijing, 100029, China.
Macromol Rapid Commun. 2022 Mar;43(6):e2100692. doi: 10.1002/marc.202100692. Epub 2022 Jan 28.
Vibration and noise are ubiquitous in social life, which severely damage machinery and adversely affect human health. Thus, the development of materials with high-damping performance is of great importance. Rubbers are typically used as damping materials because of their unique viscoelasticity. However, they do not satisfy the requirements of different applications with various working conditions. In this study, the advantages of the high loss factor of styrene butadiene rubber (SBR) are combined with the strong designability of polyurethane. Hydroxyl-terminated solution-polymerized styrene butadiene rubbers (HTSSBRs) with different structures are prepared using anionic polymerization. HTSSBRs are then used as the soft segment during the synthesis of temperature-tunable high-damping performance polyurethanes (HTSSBR-polyurethanes (PUs)). The prepared HTSSBR-PUs with different structures exhibit excellent loss performance, a maximum loss factor (tan δ ) of above 1.60, and an effective damping performance over a wide temperature range compared to traditional SBR and polyurethane. Therefore, this work offers an effective method for the design of damping materials with adjustable properties.
振动和噪声在社会生活中无处不在，它们严重损坏机器设备并对人体健康造成不良影响。因此，开发具有高阻尼性能的材料非常重要。由于其独特的粘弹性，橡胶通常被用作阻尼材料。然而，它们不能满足不同工作条件下各种应用的要求。在本研究中，结合了苯乙烯丁二烯橡胶（SBR）的高损耗因子的优势和聚氨酯的强设计性。采用阴离子聚合制备了具有不同结构的端羟基溶液聚合丁苯橡胶（HTSSBR）。然后，HTSSBR 用作合成温度可调高阻尼性能聚氨酯（HTSSBR-聚氨酯（PUs））的软段。与传统 SBR 和聚氨酯相比，具有不同结构的制备的 HTSSBR-PU 表现出优异的损耗性能，损耗因子（tanδ）大于 1.60，在宽温度范围内具有有效的阻尼性能。因此，这项工作为设计具有可调性能的阻尼材料提供了一种有效方法。
