Synthesis of a novel hydantoin-containing silane and its effect on the tracking and bacteria resistance of addition-cure liquid silicone rubber
作者： Tian Liu , Xingrong Zeng , Weizhen Fang , Xuejun Lai , Hongqiang Li
DOI: 10.1016/J.APSUSC.2017.06.117
关键词: Degradation (geology) 、 Infrared spectroscopy 、 Silane 、 Materials science 、 Polymer chemistry 、 Proton NMR 、 Hydantoin 、 Thermal stability 、 Fourier transform infrared spectroscopy 、 Silicone rubber
摘要: Abstract A novel hydantoin-containing silane, [3-(5,5-dimethylhydantoinurethano) propyl] ethoxyallyloxysilane (DMHURPAS), was synthesized and the structure characterized by FTIR 1 H NMR. The effect of DMHURPAS investigated on anti-tracking antibacterial properties addition-cure liquid silicone rubber (ALSR) after surface chlorination. It found that ALSR containing only 1.5 phr passed 1A 4.5 kV level erosion mass decreased from 0.843 g to 0.037 g. thermal stability significantly improved mechanical were also enhanced. From thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR), ALSR/DMHURPAS showed significant decrease carbonyl compounds cyclic oligomers but increase CH 4 CO 2 during degradation, indicating could inhibit oxidation methyl groups unzipping reaction, promote cleavage in ALSR. rates 2.0 phr against Escherichia coli Staphylococcus aureus 95.7% 83.4%, respectively.
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