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首页> 外文期刊>Journal of Applied Polymer Science >Study of the Influence of IPPD on Thermo-Oxidation Process of Elastomeric Hose
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Study of the Influence of IPPD on Thermo-Oxidation Process of Elastomeric Hose

机译：IPPD对弹性软管热氧化过程影响的研究

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The aim of this study was to determine the influence of the N-isopropyl-N'-phenyl-p-phenylenediamine (IPPD) antioxidant agent on degradation of composites NBR/SiO2. The inhibition of the early stages of the degrading process has been particularly analyzed. Several NBR-SiO2 matrix samples with and without IPPD have been exposed to an oxidizing atmosphere at 140 degrees C for periods between 0 and 120 h. Besides, IPPD alone has been Subject to the same aging thermo-oxidizing process. The degraded samples have been characterized by ATR-FTIR, TG, and SEM. Mechanical properties and degree of crosslinking have been determined. The results show that the IPPD improves the mechanical behavior of the composites submitted to thermo-oxidization, increasing the time in which composite retains rather good mechanical properties. IPPD decreases the ability of crosslinking of the rubber. ATR-FTIR spectroscopy study shows that the degradation process increases the volatility of the plasticizer and generates new unsaturation sites, which later will be the nuclei of crosslinking.
机译：这项研究的目的是确定N-异丙基-N'-苯基-对苯二胺（IPPD）抗氧化剂对复合材料NBR / SiO2降解的影响。已经特别分析了降解过程早期的抑制作用。几种有或没有IPPD的NBR-SiO2基质样品都已在140摄氏度的氧化气氛下暴露了0到120小时。此外，仅IPPD经历了相同的老化热氧化过程。降解的样品已通过ATR-FTIR，TG和SEM进行了表征。已经确定了机械性能和交联度。结果表明，IPPD改善了经受热氧化作用的复合材料的机械性能，从而延长了复合材料保持良好机械性能的时间。 IPPD降低了橡胶交联的能力。 ATR-FTIR光谱研究表明，降解过程增加了增塑剂的挥发性，并产生了新的不饱和位点，该位点随后将成为交联的核。

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