Deicing Blend Using Composite Salts and Urea Coating
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Solution Overview
Problem
Existing deicing compositions are either highly corrosive to metal surfaces or lack sufficient ice-melting properties, leading to prolonged dangerous driving and pedestrian hazards after snow or ice storms.
Innovation Solution
A deicing composition comprising a mixture of NaCl, KCl, and MgCl2 in specific weight ratios, combined with an ice melt trigger and urea, which is applied to surfaces to effectively melt ice while minimizing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If NaCl is used as a deicing composition, then ice-melting performance is improved, but corrosivity to metal surfaces increases
Solution Approach 1:
The patent applies composite materials by combining multiple salt components (NaCl, KCl, MgCl2, CaCl2) in specific weight ratios to create a deicing composition that achieves both effective ice melting and reduced corrosivity. The composite formulation leverages the complementary properties of each salt to resolve the contradiction between melting performance and metal surface protection.
Solution Approach 2:
The patent employs parameter changes by optimizing the weight ratios of different salt components and controlling particle size distribution (0.5mm to 2.0mm) to achieve the desired balance between ice-melting effectiveness and reduced corrosivity to metal surfaces.
2Object-affected harmful factors
If alternative compositions less corrosive than NaCl are used, then corrosivity to metal surfaces is reduced, but ice-melting properties become insufficient
Solution Approach 1:
The patent uses composite materials by formulating a multi-component salt mixture where each component contributes specific properties. The combination of less corrosive salts (KCl, MgCl2, CaCl2) with controlled amounts of NaCl, along with additives like urea and iron oxide, creates a composition that maintains ice-melting effectiveness while reducing overall corrosivity compared to pure NaCl applications.
Solution Approach 2:
The patent applies local quality by coating salt particles with urea and iron oxide, creating a layered structure where the coating provides localized corrosion protection while the core salt material delivers ice-melting functionality. This localized differentiation allows the composition to address both contradictory requirements simultaneously.
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 demonstrates improved ice-melting performance and reduced corrosion, ensuring safer driving conditions and pedestrian safety by rapidly melting ice without causing significant damage to metal surfaces.
Implementation Method 1
a deicing composition comprising a mixture including NaCl, KCl, and MgCl2... to effectively melt ice
Data Source
AI summary
Novel deicing compositions and methods of using and forming those compositions are provided. The compositions comprise a blend of NaCl, KCl, and MgCl2, with the NaCl preferably being coated with a solution comprising an ice melt trigger and/or urea. The deicing composition has low corrosion, particularly when compared to a NaCl solution. At the same time, the compositions have superior melt properties compared to NaCl solutions as well as other prior art deicers. The deicing compositions are useful for melting ice on surfaces such as roadways.