Solvent-Free Alkoxysilane Coating for Microbial Corrosion
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Solution Overview
Problem
Current anti-corrosion coatings for metals, particularly those addressing microbially influenced corrosion (MIC), are either toxic, expensive, or have limited durability and require solvents, making them unsuitable for long-term protection and environmental safety.
Innovation Solution
A high-density protective coating based on pre-condensed alkoxysilane precursors, specifically trialkoxysilane compounds like MTEOS, which form a dense network without solvents, providing excellent adhesion and corrosion resistance without the need for additional inhibitors or biocides, and can incorporate anti-MIC organisms within a porous coating system for enhanced longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tin-containing paints are used to counter MIC corrosion, then corrosion resistance is improved, but environmental safety deteriorates due to toxicity to aquatic life
Solution Approach 1:
The invention changes the chemical composition parameters by using copper-free, tin-free formulations based on zinc phosphate and other environmentally safe pigments, achieving both corrosion protection and environmental safety
Solution Approach 2:
The invention uses composite paint systems combining multiple functional components including zinc phosphate, barium sulfate, and various resins to achieve superior corrosion resistance without toxic heavy metals
2Reliability
If copper-containing paints are used for corrosion protection, then corrosion resistance is improved, but environmental safety deteriorates due to toxicity
Solution Approach 1:
The invention changes the chemical composition by completely eliminating copper and other toxic heavy metals, using environmentally safe alternatives like zinc phosphate and barium sulfate that provide equivalent or superior corrosion protection
Solution Approach 2:
The invention uses naturally occurring, non-toxic minerals like zinc phosphate and barium sulfate that are environmentally safe and can be replenished through normal weathering, replacing persistent toxic metals
3Ease of manufacture
If conventional solvant-based paint systems are used, then ease of manufacture is improved, but environmental safety deteriorates due to solvent emissions
Solution Approach 1:
The invention changes the physical state parameter by using water-based formulations instead of organic solvent systems, eliminating VOC emissions while maintaining ease of application and manufacture
Solution Approach 2:
The invention substitutes organic solvent-based delivery systems with water-based systems, replacing the chemical mechanism of solvent evaporation with water evaporation that has no harmful emissions
4Duration of action of moving object
If porous coating systems are used to incorporate anti-MIC organisms, then duration of action is improved, but corrosion resistance deteriorates due to water diffusion through pores
Solution Approach 1:
The invention applies different properties to different parts of the coating system: the base coat provides dense corrosion protection, while the top coat contains controlled porosity for organism incorporation, with each layer optimized for its specific function
Solution Approach 2:
The invention uses a composite multi-layer coating system where the base coat uses dense, non-porous materials for corrosion protection, while the top coat uses porous materials that can harbor anti-MIC organisms, combining the benefits of both approaches
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 superior corrosion resistance, maintaining integrity even after immersion in aqueous media, with a long-lasting antimicrobial effect and reduced environmental impact due to solvent-free synthesis, while maintaining transparency and mechanical stability.
Implementation Method 1
pre-condensed coat-forming alkoxysilane precursors, wherein the molecules of the pre-condensed coat-forming alkoxysilane precursors are built up from monomer units selected from the group formed by coat-forming alkoxysilane precursors, wherein the molecules of the pre-condensed coat-forming alkoxysilane precursors are cross-linked with each other
Data Source
AI summary
The invention relates to a protection layer which is used as anticorrosion layer on corrosion-prone substrates, especially corroding metals, alloys and other materials, especially on steel, and as a basecoat for the application of further porous layer systems or as a topcoat, and to the process for production thereof and to use on a coated substrate for protection against corrosion and specifically for use against microbially induced corrosion (MIC), wherein the anticorrosion layer comprises a high-density protection layer on a corrosion-prone substrate, containing pre-condensed layer-forming alkoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are formed from monomer units selected from the group of the triethoxysilane precursors, wherein the molecules of the pre-condensed layer-forming alkoxysilane precursors are crosslinked with one another, and wherein the high-density protection layer has a layer thickness of at least 50 μm.