Properties Enhancement of Room Temperature Vulcanized Silicone Rubber by Rosin Modified Aminopropyltriethoxysilane as a Cross-linking Agent
Properties Enhancement of Room Temperature Vulcanized Silicone Rubber by Rosin Modified Aminopropyltriethoxysilane as a Cross-linking Agent
复制标题
松香改性氨丙基三乙氧基硅烷作为交联剂增强室温硫化硅橡胶的性能
DOI：
10.1021/acssuschemeng.7b01943
复制
发表时间：
2017-11-01
影响因子：
8.4
通讯作者：
Song, Jie
中科院分区：
文献类型：
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作者：
Li, Qiaoguang;Huang, Xujuan;Song, Jie
以松香基缩水甘油酯为原料，与氨基丙基三乙氧基硅烷进行环氧化开环反应，制备了松香改性氨基丙基三乙氧基硅烷。通过傅里叶变换红外光谱（FT-IR）、1H NMR和13C NMR对RA的结构进行了确证。以RA为交联剂，在有机锡催化剂的作用下，制备了端羟基聚二甲基硅氧烷（PDMS）为基体的室温硫化硅橡胶。采用扫描电镜（SEM）、热重分析（TG）、万能试验机和动态力学分析（DMA）对松香改性RTV硅橡胶的形貌、热性能和力学性能进行了表征。与以四乙氧基硅烷（TEOS）为交联剂的硅橡胶相比，RA改性的RTV硅橡胶由于具有较强的刚性和极性氢化的苯环结构，其热稳定性和力学性能均有显著提高。
Rosin modified aminopropyltriethoxysilane (RA) was prepared via an epoxide ring opening reaction of rosin based glycidyl ester with aminopropyltriethoxysilane. The structure of RA was confirmed by Fourier transform infrared spectroscopy (FT-IR), 1H NMR, and 13C NMR. RA was used as a cross-linking agent to prepare room temperature vulcanized (RTV) silicone rubber with hydroxy terminated polydimethylsiloxane (PDMS) matrix in the presence of an organotin catalyst. Morphological, thermal, and mechanical properties of the rosin modified RTV silicone rubbers were characterized by scanning electron microscope (SEM), thermal gravimetric analysis (TG), universal testing machine, and dynamic mechanical analysis (DMA), respectively. Compared to the silicone rubber using tetraethoxysilane (TEOS) as the cross-linking agent, the RA modified RTV silicone rubber exhibited a significant enhancement in thermal stabilities and mechanical properties due to the strong rigidity and polar hydrogenated phenanthrene ring structur...