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Effect of selected vegetable oils on the properties of acrylonitrile-butadiene rubber vulcanizates

机译：精选植物油对丙烯腈-丁二烯橡胶硫化橡胶性能的影响

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摘要

In this study, we study if vegetable oils such as olive and orange oil, which are natural products devoid of any toxic effects, can function as multipurpose additives (processing aids, plasticizers and antioxidants) in acrylonitrile-butadiene rubber (NBR) containing 20 phr of carbon black (HAF). Dioctyl phthalate (DOP) and polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) were used as a reference plasticizer and antioxidant respectively. Rheometric and swelling characteristics were studied. The mechanical and dielectric properties before and after thermo-oxidative aging for different time periods up to 264 h at 100 C were also studied. The physico-mechanical results indicated that olive and orange oils impart good mechanical properties to NBR vulcanizates. Furthermore, they improve aging resistance and increase hardness. Dielectric relaxation spectra were used to study the relaxation behavior of these samples as function of frequency (0.1 Hz to 5 MHz) at different temperatures. The obtained data were interpreted on the basis of electrode polarization and provide evidence that the recorded relaxation phenomena include contributions from both the polymeric matrix and the presence of the reinforcing phase. According to the available mechanical and electrical results, it is suggested that olive and orange oils may be used as multipurpose additives in nitrile rubber.
机译：在这项研究中，我们研究了没有任何毒性作用的天然产物植物油（例如橄榄油和橙油）是否可以在包含20 phr的丙烯腈-丁二烯橡胶（NBR）中用作多用途添加剂（加工助剂，增塑剂和抗氧化剂）。炭黑（HAF）。邻苯二甲酸二辛酯（DOP）和聚合的2,2,4-三甲基-1,2-二氢喹啉（TMQ）分别用作参考增塑剂和抗氧化剂。研究了流变学和溶胀特性。还研究了热氧化老化前后100℃下长达264 h的机械性能和介电性能。物理力学结果表明，橄榄油和橙油为NBR硫化橡胶赋予了良好的机械性能。此外，它们改善了耐老化性并增加了硬度。介电弛豫谱用于研究这些样品在不同温度下随频率（0.1 Hz至5 MHz）变化的弛豫行为。根据电极极化解释获得的数据，并提供证据表明记录的松弛现象包括聚合物基体和增强相的存在。根据可获得的机械和电气结果，建议在丁腈橡胶中将橄榄油和橙油用作多用途添加剂。

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