Preparation and characterization of silicone oil modified polyurethane damping materials
Preparation and characterization of silicone oil modified polyurethane damping materials
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DOI：
10.1002/app.47579
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发表时间：
2019-06-10
影响因子：
3
通讯作者：
Liu, Haitao
中科院分区：
文献类型：
--
作者：
Li, Lianzhen;Tian, Bo;Liu, Haitao
本研究制备了一系列不同羟基硅油含量的聚氨酯复合阻尼材料。采用动态力学分析、电子拉伸分析、热重分析和傅里叶变换红外光谱（FTIR）等方法对复合材料的阻尼性能、力学性能、热稳定性和分子结构进行了表征。通过扫描电子显微镜（SEM）观察了表面形貌。红外光谱表明羟基硅油嵌入到聚氨酯中。SEM照片显示，PU复合材料的软硬段不相容，出现微相分离。其中羟基硅油含量为8%的PU复合材料综合性能最好。tan的最大值分别为0.376，0.561和0.573在1，10和20 Hz，分别。阻尼材料的使用温度范围在1Hz时变宽。10和20 Hz的频率可能是阻尼材料应用的合适环境。(c)2019 Wiley Periodicals，Inc. J.应用聚合物Sci. 2019，136，47579。
A series of polyurethane (PU) composites, which could be used as damping materials, with different contents of hydroxyl silicone oil were successfully prepared in this study. The damping and mechanical properties, thermal stability, and molecular groups of the PU composites were characterized by dynamic mechanical analysis, electronic tensile analysis, thermogravimetric analysis, and Fourier transform infrared (FTIR) spectroscopy, respectively. The surface morphology was also observed via scanning electron microscopy (SEM). FTIR spectroscopy showed that the hydroxyl silicone oil was embedded in the PU. The soft and hard segments of the PU composites appeared thermodynamically incompatible and showed microphase separation, as shown by the SEM pictures. The PU composite with 8% hydroxyl silicone oil was found to possess the best synthetic properties among these composites. The maximum values of tan were 0.376, 0.561, and 0.573 at 1, 10, and 20 Hz, respectively. The temperature range for the use of damping materials becomes wider at 1 Hz. Frequencies of 10 and 20 Hz might suitable surroundings for the application of damping materials. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47579.