Aqueous Fluorescent Coating for Highly Visible Screw Members
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Solution Overview
Problem
Conventional aqueous compositions for coating threaded members lack excellent visibility.
Innovation Solution
An aqueous composition comprising an aqueous binder and an aqueous emulsion-type fluorescent pigment with a surface tension of 15.5 to 80 mN/m, optionally with a non-fluorescent colorant, microcapsules encapsulating a curable compound and a curing agent, to enhance visibility and fixing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional aqueous compositions are used for coating threaded members, then environmental sustainability is improved, but visibility is insufficient
Solution Approach 1:
The patent applies fluorescent pigments that convert absorbed light into visible fluorescence, transforming the coating's optical properties. The fluorescent pigment absorbs UV light and emits visible light, providing excellent visibility while maintaining the aqueous composition's environmental benefits. This directly resolves the contradiction by changing the color/optical characteristics of the coating.
2Illumination intensity
If fluorescent pigment is added to aqueous composition, then visibility is improved, but dispersion stability may deteriorate
Solution Approach 1:
The patent introduces a surfactant as an intermediary substance that mediates between the fluorescent pigment and the aqueous binder. The surfactant reduces surface tension and improves wetting, allowing the hydrophobic fluorescent pigment to disperse uniformly and stably in the aqueous medium. This resolves the stability issue while maintaining visibility enhancement.
Solution Approach 2:
The patent modifies physical parameters of the aqueous composition, specifically adjusting surface tension through surfactant addition and controlling pH levels. These parameter changes create optimal conditions for fluorescent pigment dispersion, preventing aggregation and maintaining long-term stability while preserving the bright visibility effect.
3Object-affected harmful factors
If aqueous binder is used instead of organic solvent, then environmental sustainability is improved, but adhesion and durability may worsen
Solution Approach 1:
The patent creates a composite aqueous composition combining multiple functional components: aqueous binder, fluorescent pigment, surfactant, and optional curable compounds. This composite formulation achieves adhesion and durability comparable to organic-based coatings while maintaining environmental sustainability. The synergistic interaction of components compensates for the typically lower adhesion of aqueous systems.
Solution Approach 2:
The patent adjusts chemical parameters of the aqueous binder, including molecular weight, functional groups, and crosslinking density. By optimizing these parameters and incorporating curable compounds that form strong bonds with the substrate, the coating achieves excellent adhesion and durability despite being water-based, thus resolving the contradiction between environmental sustainability and coating strength.
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 composition achieves high visibility and excellent fixing force while maintaining an aqueous nature, with enhanced environmental sustainability.
Implementation Method 1
an aqueous emulsion-type fluorescent pigment having a surface tension of 15.5 to 80 mN/m
Implementation Method 2
an anti-loosening agent composition in the form of an aqueous dispersion containing a microcapsule, in which an epoxy resin or the like as a reactive adhesive is encapsulated
Implementation Method 3
a liquid or semisolid polyamide containing a free amino group, which acts as a curing agent and also as a binder for the microcapsule
Data Source
AI summary
An object of the present invention is to provide an aqueous composition for coating a threaded member that can attain high visibility while being an aqueous composition. The aqueous composition for coating a threaded member contains component (A): an aqueous binder; and component (B): an aqueous emulsion containing a fluorescent pigment and having a surface tension of 15.5 to 80 mN/m.