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Improving properties of silicone rubber composites using macromolecular silane coupling agent (MMSCA)

机译:使用大分子硅烷偶联剂(MMSCA)改善硅橡胶复合材料的性能

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Two types of vinyl silicone oil (VSO), allyl-capped hyperbranched polycarbosilane (HBP), and triethoxysilane (TES) were employed to synthesize macromolecular silane coupling agent (MMSCA) by hydrosilylation. VSOs, HBP, and the hydrosilylated products were used as crosslinker, respectively, to improve weak mechanical properties of silicone rubber (SR). Structures of the crosslinkers were studied by gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR). Crosslinking density test and scanning electron microscope (SEM) observation showed an increased interaction between silicone rubber and fumed silica by the use of MMSCA. Mechanical properties of the resulted composites using MMSCAs were increased to varying degrees compared with those possessing crosslinkers without ethoxy group. MMSCAs were effective for further property enhancements of composites. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43415.
机译:两种类型的乙烯基硅油(VSO),烯丙基封端的超支化聚碳硅烷(HBP)和三乙氧基硅烷(TES)用于通过氢化硅烷化合成大分子硅烷偶联剂(MMSCA)。 VSO,HBP和氢化硅烷化产物分别用作交联剂,以改善硅橡胶(SR)的弱机械性能。通过凝胶渗透色谱法(GPC),傅立叶变换红外光谱(FTIR)和核磁共振(NMR)研究了交联剂的结构。交联密度测试和扫描电子显微镜(SEM)观察表明,通过使用MMSCA,硅橡胶和气相二氧化硅之间的相互作用增加。与具有不含乙氧基的交联剂的复合材料相比,使用MMSCA的复合材料的机械性能有所不同。 MMSCA对复合材料的进一步性能增强有效。 (c)2016 Wiley Periodicals,Inc. J. Appl。 Polym。科学2016,133,43415。

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