Aqueous Paint Composition Resolving Blistering and Solvent Emission
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Solution Overview
Problem
Existing shop primers used in the shipbuilding industry have poor long-term performance and are susceptible to blistering when overcoated and immersed in water, primarily due to the use of volatile solvents and inadequate corrosion protection.
Innovation Solution
A two-component aqueous paint composition is developed, comprising an oligomeric or polymeric binder formed from specific monomers and colloidal silica, along with a reactive filler material of zinc oxide, which minimizes solvent usage and enhances corrosion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If volatile solvents are used in silicate-based binders, then the paint composition achieves adequate stability and ease of manufacture, but it causes environmental harm and health hazards
Solution Approach 1:
The invention changes the chemical composition parameters by replacing volatile organic solvents with water as the primary solvent, and by modifying the binder chemistry to use silane-modified polymers that provide adequate stability without requiring volatile solvents. This parameter change eliminates harmful emissions while maintaining paint composition stability through alternative chemical mechanisms.
Solution Approach 2:
The invention creates an inert environment by using water instead of volatile organic solvents, eliminating the harmful atmospheric emissions associated with traditional paint formulations. The water-based system provides a non-harmful medium that maintains paint stability without contributing to air pollution or health hazards.
2Object-generated harmful factors
If conventional water-based binders are used to avoid volatile solvents, then environmental harm is reduced, but the paint composition suffers from poor long-term performance and blistering
Solution Approach 1:
The invention uses composite materials by combining silane-modified polymers with colloidal silica and reactive fillers to create a binder system that maintains the environmental benefits of water-based paints while achieving the long-term performance and blister resistance previously associated with solvent-based systems. The composite structure provides enhanced durability and adhesion properties.
Solution Approach 2:
The invention introduces colloidal silica and reactive fillers as intermediary substances that mediate between the water-based binder and the substrate, providing enhanced adhesion and blister resistance. These intermediaries improve the interface properties and long-term performance without requiring volatile solvents.
3Reliability
If the paint composition is designed for corrosion protection, then substrate protection is improved, but the formulation complexity increases
Solution Approach 1:
The invention achieves multi-functionality by designing a binder system that simultaneously provides adhesion, corrosion protection, and blister resistance within a single water-based formulation. The silane-modified polymer combined with colloidal silica and reactive fillers delivers multiple protective functions without requiring separate coating layers or complex multi-component systems.
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 paint composition provides improved stability, reduced blistering, and enhanced corrosion protection, ensuring compatibility with further coatings and withstanding welding and cutting operations without health hazards.
Implementation Method 1
an oligomeric or polymeric compound the oligomeric or polymeric compound being formed from at least one monomer of the general formula I: Si(OR1)4 where R1 is hydrogen, lower alkyl or lower alkoxy
Implementation Method 2
a reactive filler material which reactive filler material comprises zinc oxide
Implementation Method 3
an aqueous binder, which aqueous binder comprises an oligomeric or polymeric compound
Data Source
AI summary
A two component paint composition that, after mixing, comprises the following components in aqueous solution: a) from the first component: i) an aqueous binder, which aqueous binder comprises an oligomeric or polymeric compound the oligomeric or polymeric compound being formed from at least one monomer of the general formula I: Si (OR1)4 where each R1 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl, aryl or -(C=O)R4 group, and each R4 group is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl or aryl group, and at least one monomer having the general formula II: (R2)4-mSi(OR3)m where each R2 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl or aryl group, and wherein at least one -R2 group comprises the group -RXQRZ or -RXN(RW)2 where Rx is any C1 to C10 bivalent organic bridging group, Q is selected from an Oxygen or a Sulphur radical and Rz comprises an H, alkyl, alkenyl, alkynyl, aralkyl or aryl group, and each Rw is independently selected and defined as for Rz above; where each R3 is independently selected from hydrogen or any alkyl, alkenyl, alkynyl, aralkyl, aryl or -(C=O)R5 group, where R5 is defined as for R4 above, and m = 1 to 3; and, optionally at least one colloidal silica; b) from the second component i) at least one reactive filler material.