Water-Based Hydrophobic Coating With Graphene for Durable Application
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Solution Overview
Problem
Existing hydrophobic coatings require complex application processes, pre-coating steps, and high temperatures for drying, and often contain solvents harmful to the environment and user health, while lacking long-term durability and easy applicability.
Innovation Solution
A hydrophobic coating composition comprising a suspension of fluorinated silane and multilayer graphene in an aqueous medium, which can be easily applied at ambient temperatures without additional surface treatments, using a simple mixing process that stabilizes the graphene suspension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydrophobic coatings are used, then hydrophobic performance is achieved, but complex application processes and high temperatures for drying are required
Solution Approach 1:
The patent changes the physical and chemical parameters of the coating system by using fluorinated silane compounds with specific molecular structures (containing C-F bonds and silane groups) that enable hydrophobic performance at ambient temperatures without requiring complex application processes or high-temperature drying
Solution Approach 2:
The patent creates a composite coating system combining fluorinated silane compounds with building materials (such as concrete, brick, or stone) to form an integral hydrophobic layer that provides both hydrophobic performance and structural integration, eliminating the need for separate pre-coating or post-treatment steps
2Reliability
If conventional hydrophobic coatings are used, then water repellency is achieved, but solvent-based formulations harm the environment and user health
Solution Approach 1:
The patent changes the chemical composition parameters by formulating the coating with water-based fluorinated silane compounds instead of traditional solvent-based systems, eliminating harmful solvents while maintaining hydrophobic performance through the fluorinated silane chemistry that provides water repellency without requiring organic solvents
Solution Approach 2:
The patent converts the potentially harmful solvent-based formulation into a beneficial water-based system by using fluorinated silane compounds that provide the necessary hydrophobic effect without requiring harmful solvents, thereby eliminating environmental and health hazards while maintaining water repellency
3Reliability
If conventional hydrophobic coatings are used, then surface protection is achieved, but long-term durability is insufficient
Solution Approach 1:
The patent creates a durable composite structure where fluorinated silane compounds form an integral part of the building material matrix, creating a permanent hydrophobic layer that is chemically bonded to the substrate and resistant to degradation over time, thereby ensuring long-term durability of the protective function
Solution Approach 2:
The patent changes the chemical bonding parameters by using fluorinated silane compounds that form strong chemical bonds with building materials, creating a permanent integrated hydrophobic layer rather than a surface-level coating, which ensures long-term durability and resistance to environmental degradation
4Reliability
If conventional hydrophobic coatings are used, then hydrophobic effect is achieved, but additional surface treatments and pre-coating steps are required
Solution Approach 1:
The patent creates a universal coating formulation that can be applied directly to various building materials (concrete, brick, stone) without requiring separate pre-coating or surface treatment steps, as the fluorinated silane compounds are designed to bond directly with the substrate and provide hydrophobic performance in a single application
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 achieves long-term superhydrophobic performance with high water contact angles, maintaining durability and ease of application, reducing environmental and health risks associated with solvent use.
Implementation Method 1
The coating achieves long-term superhydrophobic performance with high water contact angles
Implementation Method 2
a suspension of at least one fluorinated silane and graphene in an aqueous medium
Data Source
AI summary
This disclosure provides for a hydrophobic coating composition containing a suspension of at least one fluorinated silane polymer and graphene in an aqueous medium and a method of preparing the hydrophobic coating composition involving the steps of a) providing a mixture of multilayer graphene, a fluorinated silane polymer and an aqueous medium; and b) subjecting the mixture to agitation.