Glycol-Free Antifreezing Coolant Composition for Vehicle Cooling Systems
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Solution Overview
Problem
Conventional antifreeze solutions using glycol or alcohol are environmentally harmful, flammable, and exhibit reduced corrosion resistance at high temperatures, necessitating the development of a glycol-free, environmentally friendly coolant with superior cooling and corrosion resistance properties.
Innovation Solution
An antifreezing coolant composition comprising an aliphatic or aromatic carboxylic acid salt, an anthranilamide compound, a corrosion inhibitor, a triazole compound, and an aqueous solvent, which forms a thin film on metal surfaces to provide high corrosion resistance and effective cooling performance at both low and high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If glycol or alcohol is used as an antifreeze agent, then antifreezing performance is improved, but environmental harm and flammability increase
Solution Approach 1:
The patent removes glycol and alcohol from the coolant composition entirely, extracting the harmful substance while maintaining antifreeze functionality through alternative means (inorganic salts and carboxylic acid salts), thereby eliminating environmental harm and flammability risks
Solution Approach 2:
The patent changes the chemical composition parameters by substituting organic antifreeze agents (glycol/alcohol) with inorganic salts (nitrate, nitrite, sulfate, chloride) and carboxylic acid salts, fundamentally altering the chemical properties to achieve non-flammability and environmental friendliness while maintaining freezing point depression capability
2Object-affected harmful factors
If environmentally friendly antifreeze solution without glycol is used, then environmental friendliness is improved, but corrosion resistance at high temperatures deteriorates
Solution Approach 1:
The patent creates a composite corrosion protection system by combining multiple corrosion inhibitors (nitrate, nitrite, sulfate, chloride salts) with carboxylic acid salts and organic acids, forming a synergistic mixture that provides comprehensive corrosion resistance at high temperatures while maintaining environmental friendliness
Solution Approach 2:
The patent applies different types of corrosion inhibitors targeting different metal components and corrosion mechanisms - nitrate and nitrite for iron-based metals, sulfate for aluminum, chloride for specific alloys, and carboxylic acid salts for general metal protection, creating localized protection strategies for different system components
3Reliability
If conventional glycol-based coolant is used, then corrosion resistance is maintained, but environmental pollution increases
Solution Approach 1:
The patent extracts and removes glycol from the coolant formulation, eliminating the source of environmental pollution while replacing its functional roles (freezing point depression and corrosion protection) with environmentally benign inorganic salts and carboxylic acid salts
Solution Approach 2:
The patent converts potentially harmful substances into beneficial ones by replacing toxic glycol with non-toxic inorganic salts and biodegradable carboxylic acid salts, transforming the coolant from an environmentally harmful substance to an environmentally friendly alternative that maintains all necessary protective functions
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
The composition achieves superior antifreezing performance at low temperatures and high corrosion resistance at high temperatures, making it suitable for use in vehicle cooling systems without the environmental drawbacks of glycol-based solutions.
Implementation Method 1
The antifreezing coolant composition may form a thin film on the surface of a metal for use in cooling systems for vehicles to thereby exhibit high corrosion resistance at low and high temperatures
Implementation Method 2
The antifreezing coolant composition may form a thin film on the surface of a metal
Implementation Method 3
The environmentally friendly antifreeze solution, which is useful as a freezing-point depression agent
Data Source
AI summary
Disclosed is an antifreezing coolant composition, which does not include glycol but includes environmentally friendly materials, such as a carboxylic acid salt, an anthranilamide compound, a corrosion inhibitor and a triazole compound. The antifreezing coolant composition may form a thin film on the metal surface in cooling systems for vehicles to thereby exhibit high corrosion resistance at low and high temperatures, superior antifreezing performance at low temperatures, and superior cooling performance at high temperatures.