The effect of acetic acid on the conduction of water in oil

The effect of organic acid, which is one of the deteriorated compounds of aged oil in transformer, on the state of dissolved water and on the conduction of water, was discussed. Dissolved water molecules do not always diffuse uniformly in oil. Some water clusters are formed and interact with liquid molecules by hydrogen bond. The interacting water cluster contributes conduction phenomena in oil. In practical use, the aged oil contains some ketonic, ester, carbonic compounds. And water molecules, which bond these polar bases, can increase conductivity. The acetic acid, which is one of the organic acids in aged oil, can interact with water molecules. In this paper, the acetic acid was dropped in the liquid that was modified aged oil. The state and the amount of water cluster were observed by FT-IR method. As a result, the dropping of a little amount of acetic acid, a part of water cluster was removed from liquid and conductivity was decreased.