Chlorinated Fluoroaromatic Fluids for Low-GWP Immersion Cooling
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Solution Overview
Problem
There is a need for environmentally friendly chlorinated fluoroaromatic compounds that offer low global warming potential, non-flammability, and favorable dielectric properties for high-temperature applications such as heat transfer and immersion cooling, while also being cost-effective to manufacture.
Innovation Solution
The development of chlorinated fluoroaromatic compounds with specific structural formulas, which include oxygen or sulfur atoms, fluoroalkenyl groups, and chlorinated aromatic rings, are synthesized using nucleophilic displacement reactions, resulting in compounds with low global warming potential, high boiling points, and favorable dielectric properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing fluorinated fluids are used for high-temperature applications, then thermal stability is achieved, but global warming potential increases and environmental harm worsens
Solution Approach 1:
The patent changes the chemical composition parameters by introducing chlorine atoms and specific fluoroalkenyl groups into the aromatic compound structure. This modifies the molecular properties to achieve both high thermal stability (boiling points above 150°C) and low global warming potential (GWP below 150), resolving the contradiction between thermal performance and environmental impact
Solution Approach 2:
The invention creates composite molecular structures combining chlorinated aromatic rings with fluoroalkenyl groups containing oxygen or sulfur atoms. This composite approach allows the molecule to simultaneously exhibit high thermal stability from the aromatic core and low environmental harm from the fluorinated side chains with specific heteroatoms
2Temperature
If fluorinated fluids with high boiling points are used for high-temperature applications, then thermal stability is improved, but dielectric properties deteriorate
Solution Approach 1:
The patent applies local quality by strategically placing oxygen or sulfur atoms within the fluoroalkenyl groups attached to the aromatic ring. These localized heteroatom regions provide favorable dielectric properties (dielectric constant between 2.0-4.0) while the overall molecular structure maintains high boiling points through the chlorinated aromatic core and fluorinated chains
3Object-affected harmful factors
If environmentally friendly compounds are developed, then global warming potential decreases, but manufacturing cost increases
Solution Approach 1:
The patent segments the molecular structure into modular components: a chlorinated aromatic core and interchangeable fluoroalkenyl groups with specific heteroatoms. This segmentation allows systematic synthesis where standard building blocks can be combined through established nucleophilic displacement reactions, reducing manufacturing complexity and cost while maintaining low environmental impact
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These compounds exhibit significantly lower global warming potential, non-flammability, and improved dielectric properties compared to existing fluorinated fluids, making them suitable for high-temperature applications with enhanced thermal stability and reduced environmental impact.
Implementation Method 1
The development of chlorinated fluoroaromatic compounds with specific structural formulas, which include oxygen or sulfur atoms, fluoroalkenyl groups, and chlorinated aromatic rings, are synthesized using nucleophilic displacement reactions
Data Source
AI summary
A chlorinated fluoroaromatic compound having structural formula (I): where G is an oxygen or sulfur atom; each R1 is, independently, a fluoroalkenyl group having 2 to 10 carbon atoms and optionally comprises one or more catenated heteroatoms; each R2 is, independently, (i) a hydrogen atom or a fluorine atom; or (ii) a fluoroalkyl group or a fluoroalkenyl group having 1 to 9 carbon atoms and optionally comprises one or more catenated heteroatoms; R3 is a hydrogen atom or a fluorine atom; a is 1-3; x is 1 or 2; y is 1-4; and z=6-a-x-y.