Effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil
作者:Maria Alexsandra de Sousa Rios、Selma Elaine Mazzetto
DOI:10.1007/s10973-011-2160-y
日期:2013.1
This study shows the synthesis, characterization, and evaluation of the effect of organophosphate antioxidant on the thermo-oxidative degradation of a mineral oil. The organophosphate was synthesized by nucleophilic substitution (SN2) of hydrogenated cardanol. For this study, were employed thermogravimetry, derivative thermogravimetry, differential scanning calorimetry, and differential thermal analysis techniques. The results showed that organophosphate contributed for thermo-oxidative stability of mineral oil (initial decomposition temperature (IDT) mineral oil: 91.28 °C < IDT mineral oil + organophosphate (1%): 156.42 °C). The organophosphate obtained shows significant thermal stability when compared with other compound of the same class (diphenyl phosphate).
本研究展示了有机磷酸酯抗氧化剂对矿物油热氧化降解效果的合成、表征和评估。通过氢化腰果酚的亲核取代(SN2)合成有机磷酸酯。本研究采用了热重分析、导数热重分析、差示扫描量热分析和差热分析技术。结果表明,有机磷酸盐有助于矿物油的热氧化稳定性(初始分解温度 (IDT) 矿物油:91.28 °C < IDT 矿物油 + 有机磷酸盐 (1%):156.42 °C)。与其他同类化合物(磷酸二苯酯)相比,所得有机磷酸酯显示出显着的热稳定性。