1results about How to "Does not affect dielectric properties" patented technology

The application relates to the technical field of electrical insulation materials, and discloses a natural ester insulating oil and a preparation method thereof, the preparation method of the natural ester insulating oil comprising the following steps: preparing a composite pour point depressant mother liquor containing polymethyl acrylate and an intermolecular spacer; atomizing and injecting the composite pour point depressant mother liquor into a base oil flow for online mixing, and controlling the momentum flux ratio to be 5-20; gradient quenching the mixed oil flow, and controlling the cooling rate to be 6-15 DEG C / min. According to the application, fluid mechanics control and thermodynamics locking are adopted, so that the polymethyl acrylate pour point depressant is in a non-equilibrium state solvated dispersion structure in the base oil. The obtained insulating oil has a filter blocking tendency value less than 1.05, the application has excellent low-temperature fluidity and micro cleanliness, solves the problems of uneven dispersion and easy agglomeration of the polymer pour point depressant in the natural ester, and is suitable for high-voltage power equipment.