Nanoparticle-enhanced ester-mineral oil blends: Electrical insulation boost with calcium copper titanate (CCTO) and boron nitrate (BN)

Next Materials Pub Date : 2025-08-06 DOI:10.1016/j.nxmate.2025.101034

Sujatha Balaraman , Chellappan Suresh , Rengaraj Madavan , Alagar Karthick

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Abstract

Mineral oil is the most common type of transformer oil, but it has a low fire point and does not break down in the environment, so it is not ideal. Biodegradable, non-toxic, and fireproof ester-based oils are considered second-generation insulators. These oils are continuously under investigation as potential alternatives to mineral oil, the current standard for insulation. These ester-based oils have their dielectric properties amplified by the addition of various nanomaterials. The primary goal of this research is to create a base fluid by mixing mineral and natural oils, then to disperse nanoparticles of Calcium Copper Titanate (CCTO) and Boron Nitrate (BN). Combining the two nanomaterials improves the dielectric properties of nanofluids, according to the results. The AC breakdown voltage of the oil blend is 41 % lower than that of the CCTO dispersed nanofluid, according to reports. Similarly, the AC breakdown voltage of the nanofluid containing BN is up to 35 % greater than that of the oil mixture. Additionally, oil blends dispersed with CCTO have superior dielectric and coolant properties.

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纳米颗粒增强酯-矿物油混合物：钛酸铜钙（CCTO）和硝酸硼（BN）的电绝缘增强剂

矿物油是最常见的一种变压器油，但它的燃点低，在环境中不分解，所以不理想。可生物降解、无毒、防火的酯基油被认为是第二代绝缘体。这些油作为矿物油的潜在替代品一直在研究中，矿物油是目前的绝缘标准。这些酯基油的介电性能通过添加各种纳米材料而增强。这项研究的主要目标是通过混合矿物油和天然油来制造一种基础流体，然后分散钛酸钙铜（CCTO）和硝酸硼（BN）纳米颗粒。结果表明，两种纳米材料的结合提高了纳米流体的介电性能。据报道，混合油的交流击穿电压比CCTO分散的纳米流体低41% %。同样，含有BN的纳米流体的交流击穿电压比油混合物高35% %。此外，与CCTO分散的油混合物具有优越的介电和冷却性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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