Epoxy Polysiloxane Hybrid Coating for Weather and Corrosion Resistance
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Solution Overview
Problem
Epoxy-based coatings and flooring materials face challenges with weatherability, mechanical abuse resistance, and the need for additional topcoats to maintain chemical and corrosion resistance, particularly under sunlight exposure and in industrial environments with heavy impact and chemical exposure.
Innovation Solution
Development of epoxy-polysiloxane polymer coating compositions comprising a non-aromatic epoxide resin, a polysiloxane, and a cure system with a blend of alkoxy functional aminosilanes, which form a cross-linked epoxy polysiloxane polymer structure, offering improved chemical, corrosion, and weather resistance, as well as flexibility and mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If epoxy based protective coatings are used to provide corrosion resistance and chemical resistance, then corrosion protection and chemical resistance are improved, but weatherability and color/gloss retention deteriorate due to UV light exposure causing chalking
Solution Approach 1:
The patent creates a composite coating system combining epoxy resin (for corrosion/chemical resistance) with polysiloxane resin (for weatherability) in a single hybrid formulation. This composite material integrates the beneficial properties of both resin systems, allowing the coating to maintain corrosion resistance while achieving superior UV resistance and color/gloss retention without chalking.
2Object-affected harmful factors
If a two or three coat system with weatherable topcoat is applied over epoxy coating, then weatherability and color/gloss retention are improved, but device complexity and application labor increase
Solution Approach 1:
The patent merges the functions of the epoxy basecoat (corrosion protection) and the polysiloxane weatherable topcoat into a single hybrid coating composition. This eliminates the need for separate application steps, reducing both material complexity and labor requirements while maintaining both corrosion resistance and weatherability in one coating layer.
Solution Approach 2:
The hybrid epoxy-polysiloxane coating performs multiple functions simultaneously: it provides corrosion resistance from the epoxy component, chemical resistance, and superior weatherability with color/gloss retention from the polysiloxane component. This multi-functional coating replaces what previously required multiple specialized coatings applied in sequence.
3Reliability
If conventional epoxy coating is applied to provide chemical containment and corrosion protection, then chemical resistance and corrosion resistance are improved, but resistance to mechanical abuse such as impact and flexing deteriorates
Solution Approach 1:
The patent formulates a composite hybrid resin system that combines epoxy resin (providing chemical/corrosion resistance) with polysiloxane resin (providing mechanical flexibility and impact resistance). The resulting coating maintains the chemical containment properties of epoxy while gaining the mechanical abuse resistance needed for industrial flooring and chemical containment applications.
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 epoxy-polysiloxane polymer coatings demonstrate enhanced resistance to chemicals, corrosion, and weathering, with improved flexibility and mechanical strength, eliminating the need for additional topcoats and providing superior performance in industrial settings.
Implementation Method 1
wherein the combined composition reacts to form a cross-linked epoxy polysiloxane polymer structure
Data Source
AI summary
Epoxy-polysiloxane based coating and flooring compositions exhibiting improved flexibility, and excellent weatherability and corrosion resistance after curing are described. The epoxy-polysiloxane polymer coating composition may be prepared by combining a polysiloxane, an epoxide resin material and a cure system including a blend of compounds selected from a dialkoxy functional aminosilane, a trialkoxy functional aminosilane, and an amino functional polysiloxane resin, where the blend has an average alkoxy functionality value ranging from 2.0 to 2.8.