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Evaluation of the dielectric properties of grease containing copolymers and ester

机译:评估含油脂的共聚物和酯的介电性能

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Poly(1-octadecene-co-maleic anhydride) bis behanate ester, poly(1-octadecene-co-maleic anhydride) bis stearate ester, and ethylene glycol bis stearate ester were prepared and their structures were confirmed by IR spectroscopy. Wax gel was prepared from base oil blend (base lube oil grade 260/290, transformer oil) and microcrystalline wax in ratio 2.3: 1, respectively, in the presence of antioxidant and anticorrosion additives in ratio of 0.1-2%. Atactic polypropylene was added in mixture with the above copolymers and ester to the wax gel in different proportions. Dielectric constant, dielectric loss, and volume resistivity at frequency range of 1-10 ~3 kHz 35°C have shown better results than that of wax gel alone. The grease which includes poly(1-octadecene-co-maleic anhydride) bis behanate ester in mixture with atactic polypropylene recorded the best results.
机译:制备了聚(1-十八烯-顺丁烯二酸酐)双山han酸酯,聚(1-十八烯-顺丁烯二酸酐)双硬脂酸酯和乙二醇双硬脂酸酯,并通过红外光谱确认了它们的结构。由基础油混合物(基础润滑油等级260/290,变压器油)和微晶蜡分别以2.3:1的比例和在抗氧化剂和防腐添加剂的比例为0.1-2%的情况下制备蜡凝胶。将无规立构聚丙烯与上述共聚物混合并以不同比例将酯加入蜡凝胶中。在35°C的1-10〜3 kHz频率范围内,介电常数,介电损耗和体积电阻率显示出比单独的蜡凝胶更好的结果。包含聚(1-十八碳烯-顺丁烯二酸酐-顺丁烯二酸酐)双山at酸酯与无规立构聚丙烯混合的润滑脂,效果最佳。

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