Olefinic Membrane Composite with Silicone Coating for Contaminant Resistance
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Solution Overview
Problem
EPDM roofing membranes are vulnerable to environmental factors such as UV light, greases, acids, and phosphorus-containing compounds, which can degrade their performance and durability.
Innovation Solution
A membrane composite is developed with an olefinic membrane core partially encapsulated by a crosslinked silicone coating on both surfaces, enhancing resistance to environmental contaminants and providing a substrate for sealants and adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an olefinic membrane (EPDM) is used for roofing, then protection from moisture and UV light degradation is provided, but resistance to environmental contaminants (greases, acids, phosphorus-containing compounds) is insufficient
Solution Approach 1:
The patent applies composite materials by combining an olefinic membrane base layer with a silicone coating layer to create a multi-layer roofing membrane. The olefinic membrane provides structural integrity and UV resistance, while the silicone coating adds resistance to environmental contaminants such as greases, acids, and phosphorus-containing compounds. This composite structure resolves the contradiction by integrating materials with complementary properties to achieve both contaminant resistance and overall durability.
Solution Approach 2:
The patent applies parameter changes by modifying the surface properties of the olefinic membrane through the addition of a silicone coating. The silicone coating changes the surface energy, chemical composition, and physical properties of the membrane surface, enabling it to resist environmental contaminants that would otherwise degrade the olefinic membrane. This parameter change allows the membrane to maintain reliability in industrial and commercial settings while preserving the original UV protection and moisture resistance.
2Object-affected harmful factors
If a silicone coating is applied to enhance contaminant resistance, then resistance to environmental factors is improved, but the complexity of the membrane structure increases
Solution Approach 1:
The patent applies flexible shells and thin films by using a silicone coating layer that is thin yet highly effective at protecting the olefinic membrane from environmental factors. The silicone coating forms a flexible protective shell on the membrane surface, providing UV light and contaminant resistance without adding significant structural complexity or rigidity. This thin film approach resolves the contradiction by delivering enhanced protection while maintaining a relatively simple and flexible membrane structure.
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 silicone-coated membrane composite demonstrates improved resistance to environmental factors and meets industry standards for roofing systems, ensuring durability and compatibility with various sealants and adhesives.
Implementation Method 1
a first silicone coating layer disposed on said first planar surface; and a second silicone coating layer disposed on said second planar surface. One or more embodiments of the present invention provide a first or second silicone coating layer that is crosslinked.
Data Source
AI summary
A membrane composite comprising an olefinic membrane core having first and second planar surfaces, a first silicone coating layer disposed on the first planar surface, and a second silicone coating layer disposed on the second planar surface.