Mixed Coating Material for Aircraft Anti-Icing
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Solution Overview
Problem
Existing anti-icing equipment on aircraft is ineffective in preventing icing on all airframe surfaces, leading to increased fuel consumption due to weight and operational inefficiencies, and current high-water-repellent coating materials like AIS have low durability and are difficult to apply to large structures.
Innovation Solution
A mixed coating material comprising a cold curing resin and a fluororesin, such as tetrafluoroethylene resin, that cures at normal room temperature, providing a durable and highly water-repellent coating film with a preferred fluororesin content ratio of 43 wt % to 67 wt %, enhancing anti-icing effects without significant weight or fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ultraviolet curable mixed coating material (AIS) is used to achieve high water repellency, then water repellent performance is improved, but durability deteriorates due to erosion and it becomes difficult to apply to large structures
Solution Approach 1:
The patent changes the curing mechanism from ultraviolet light-dependent photopolymerization to moisture-dependent chemical curing. This parameter change allows the coating to cure at room temperature without UV exposure, enabling application to large aircraft structures where UV curing is impractical, while maintaining high water repellency through the fluororesin composition
Solution Approach 2:
The patent uses a composite coating system combining fluororesin (for water repellency) with reactive diluents and curing agents that undergo chemical bonding. This composite approach creates a durable, erosion-resistant coating that maintains its water repellent properties, resolving the contradiction between initial performance and long-term durability
2Area of stationary object
If anti-icing equipment scale is increased to cover all airframe surfaces, then anti-icing coverage is improved, but airframe weight increases
Solution Approach 1:
The patent replaces mechanical/thermal anti-icing systems (heating elements, pneumatic boots) with a chemical coating solution. The fluororesin-based coating provides passive anti-icing protection through surface chemistry rather than active mechanical or thermal systems, eliminating the need for heavy equipment while achieving complete airframe coverage
Solution Approach 2:
The coating enables self-service anti-icing protection that does not require external power or active systems. The chemical properties of the fluororesin coating provide automatic water and ice repellency without requiring heating, pressurization, or other energy-intensive mechanisms, thereby reducing airframe weight
3Reliability
If anti-icing equipment is run more intensively to cover portions beyond capabilities, then anti-icing effectiveness is improved, but fuel consumption increases
Solution Approach 1:
The patent replaces energy-intensive active anti-icing systems with a passive chemical coating that requires no power input. The fluororesin coating provides continuous anti-icing protection through its inherent low surface energy properties, eliminating the need for continuous heating or pressurization and thereby reducing fuel consumption
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 coating material achieves high durability and effective anti-icing performance with improved water repellency and slippage, maintaining performance even under erosion, suitable for large structures like aircraft, reducing fuel consumption and weight.
Implementation Method 1
a cold curing resin that undergoes reaction curing at normal room temperature
Implementation Method 2
highly water-repellent coating films... fluororesin... tetrafluoroethylene resin
Data Source
AI summary
A mixed coating material is obtained by mixing a cold curing resin that undergoes reaction curing at normal room temperature, and a fluororesin. The constituent ratio of the fluororesin in a coating film ranges from 43 wt % to 68 wt %.