Estolide Dielectric Fluids for Transformer Biodegradability
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Solution Overview
Problem
Conventional dielectric fluids used in electrical transformers are non-biodegradable and toxic, posing environmental risks and failing to meet environmental degradation standards, while also having limitations in properties like viscosity and pour point.
Innovation Solution
Development of dielectric fluids comprising estolide compounds with specific structural formulas, which are partially or fully biodegradable, meeting OECD biodegradability standards and exhibiting improved viscometric properties and oxidative stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional dielectric fluids are used in electrical transformers, then the equipment can operate with established cooling and insulating functions, but the fluids are non-biodegradable and toxic, posing environmental risks and failing to meet environmental degradation standards
Solution Approach 1:
The patent changes the chemical composition parameters of dielectric fluids by introducing estolide compounds with specific molecular structures (Formula I with controlled x, y, n, R1, and R2 parameters). This chemical parameter change transforms the fluid's environmental properties, making it biodegradable while maintaining dielectric strength, viscosity, and pour point within acceptable ranges for transformer operation.
Solution Approach 2:
The patent creates composite dielectric fluids by combining estolide compounds with other compatible substances. The estolide base fluid serves as a composite material that integrates both environmental benefits (biodegradability) and functional performance (insulating and cooling properties), resolving the contradiction between eco-friendliness and reliability.
2Object-affected harmful factors
If estolide compounds with specific formulas are used to improve biodegradability, then environmental compliance is achieved, but the complexity of formulating fluids with optimal viscosity and pour point increases
Solution Approach 1:
The patent systematically adjusts formulation parameters including the estolide compound structure (x, y, n values), additive concentrations, and blending ratios. By changing these parameters, the patent optimizes viscosity and pour point while maintaining biodegradability, reducing formulation complexity through methodical parameter optimization rather than trial-and-error.
Solution Approach 2:
The patent employs feedback mechanisms by testing and measuring key properties (viscosity, pour point, biodegradability) of estolide-based formulations and adjusting the composition accordingly. This iterative feedback process allows for systematic optimization of multiple properties simultaneously, managing formulation complexity through controlled experimentation and data-driven adjustments.
Data Source
AI summary
Provided herein are dielectric fluids comprising at least one estolide compound of formula (II); in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided herein are uses of dielectric fluids and electrical devices such as transformers that comprise a dielectric fluid comprising at least one estolide compound.