How the hindered amines affect the microstructure and mechanical properties of nitrile-butadiene rubber composites
How the hindered amines affect the microstructure and mechanical properties of nitrile-butadiene rubber composites
复制标题
位阻胺如何影响丁腈橡胶复合材料的微观结构和力学性能
DOI：
10.1515/epoly-2020-0002
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发表时间：
2019
期刊：
影响因子：
3.7
通讯作者：
Mingli Jiao
中科院分区：
文献类型：
--
作者：
Meng Song;Xiujuan Wang;Sizhu Wu;Qi Qin;Guomin Yu;Zhongzhu Liu;Haiyan Pei;Yanli Zhang;Mingli Jiao
摘要将不同的受阻胺GW-622和GW-944添加到丁腈橡胶(NBR)中，制备了一种混杂阻尼材料。用傅立叶变换红外光谱(FTIR)、扫描电子显微镜(SEM)、差示扫描量热仪(DSC)和动态热机械分析(DMA)研究了阻聚胺/NBR复合材料的微观结构、相容性和动态力学性能。FTIR结果表明，受阻的胺分子与NBR基质之间形成了氢键。扫描电子显微镜和差示扫描量热分析结果表明，GW-622和GW-944与NBR基体具有部分相容，呈现两相结构。随着GW-622和GW-944用量的增加，受阻胺/丁腈橡胶复合材料的有效阻尼温度范围在室温较窄，在较高温度下较宽。相比之下，GW-944分子的加入对材料的减振效果更为明显。为制备最佳减振橡胶材料提供了理论依据。图形摘要
Abstract Different hindered amines, GW-622 and GW-944, were added to a nitrile-butadiene rubber (NBR) matrix to prepare a hybrid damping material. The microstructure, compatibility, and dynamic mechanical properties of the hindered amine/NBR composites were investigated using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), differential scanning calorimetry (DSC), and dynamic thermomechanical analysis (DMA). The FTIR results showed that hydrogen bonds formed between the hindered amine molecules and the NBR matrix. The SEM and DSC results showed that both GW-622 and GW-944 had partial compatibility with the NBR matrix, and a two-phase structure appeared. The effective damping temperature ranges of the hindered amine/NBR composites were narrow at room temperature and broad at higher temperatures with increasing amounts of GW-622 and GW-944. Comparatively, the damping effect from the addition of GW-944 molecules was more clearly. The present work provides a theoretical basis for the preparation of optimum damping rubber materials. Graphical Abstract