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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of hyperbranched polymer modified montmorillonite/chlorinated butyl rubber damping composites
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Preparation and characterization of hyperbranched polymer modified montmorillonite/chlorinated butyl rubber damping composites

机译：高支化聚合物改性蒙脱土/氯化丁基橡胶阻尼复合材料的制备与表征

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摘要

In this work, Na+-montmorillonite (MMT) was modified by hyperbranched polymer (HBP) and grafted with hindered phenol to improve the damping and other properties of the chlorinated butyl rubber (CIIR) composites. The hyperbranched polymer-modified montmorillonite (HBP-OMMT) was prepared by organic montmorillonite (OMMT) that was obtained from the cation exchange reaction between MMT and silane quaternary ammonium salt. The main characterization methods were Fourier transform infrared spectroscopy, hydrogen nuclear magnetic resonance, X-ray diffraction, scanning electron microscopy, energy dispersive spectrometer, and thermogravimetric (TG) analysis. The basal spacings of MMT, OMMT, and HBP-OMMT were 1.47, 2.94, and 4.09 nm, respectively. The onset and center temperatures of decomposition (T-5% and T-max) of HBP-OMMT were improved from 301 and 369 degrees C to 332 and 398 degrees C, respectively. The CIIR damping composites were prepared by mechanical blending of HBPOMMT with pure CIIR. The tensile strength and elongation at break of the composites were improved from 5.4 MPa and 890% to 7.6 MPa and 1066%. From TG curves, T-5% and T-max were increased from 297.4 and 406.0 degrees C to 323.3 and 410.5 degrees C, respectively. The dynamic mechanical analysis results showed that tan delta rose from the original 1.20 to 1.44 with the addition of HBP-OMMT. (C) 2016 Wiley Periodicals, Inc.
机译：在这项工作中，Na +-蒙脱土（MMT）通过超支化聚合物（HBP）进行了改性，并接枝了受阻酚，以改善氯化丁基橡胶（CIIR）复合材料的阻尼和其他性能。超支化聚合物改性的蒙脱土（HBP-OMMT）是由有机蒙脱土（OMMT）制备的，有机蒙脱土是从MMT与硅烷季铵盐之间的阳离子交换反应获得的。主要表征方法为傅立叶变换红外光谱，氢核磁共振，X射线衍射，扫描电子显微镜，能量色散光谱仪和热重分析（TG）。 MMT，OMMT和HBP-OMMT的基础间距分别为1.47、2.94和4.09 nm。 HBP-OMMT的分解起始温度和中心温度（T-5％和T-max）分别从301和369摄氏度提高到332和398摄氏度。通过将HBPOMMT与纯CIIR机械掺混来制备CIIR阻尼复合材料。复合材料的拉伸强度和断裂伸长率从5.4 MPa和890％提高到7.6 MPa和1066％。从TG曲线来看，T-5％和T-max分别从297.4和406.0摄氏度增加到323.3和410.5摄氏度。动态力学分析结果表明，加入HBP-OMMT后，tanδ从原来的1.20升高到1.44。 （C）2016威利期刊公司

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