UV-Curable Acrylate Coating for Vehicle Axle Corrosion and Stone Chip Protection
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Solution Overview
Problem
Commercial vehicle axles face significant mechanical and chemical stresses from stone chips and corrosion, requiring a protective coating with excellent covering power, hardening, and adhesion properties that can be applied using conventional methods.
Innovation Solution
A UV-curable composition comprising a mix of aromatic and aliphatic epoxy acrylates, polyester acrylates, reactive diluents, photoinitiators, fillers, pigments, and auxiliary additives, which can be cured using UV radiation, providing enhanced corrosion protection and mechanical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional painting methods and compositions are used, then application simplicity is maintained, but protection against corrosion and stone chips is insufficient
Solution Approach 1:
The patent changes the chemical parameters of the coating composition by using UV-curable acrylate resins instead of conventional paints, enabling superior protective properties while maintaining conventional application methods. The composition parameters (resin type, crosslinking density, filler content) are optimized to achieve both high reliability and ease of application.
Solution Approach 2:
The patent employs composite material principles by combining UV-curable acrylate resins with inorganic fillers and pigments to create a coating that exhibits enhanced mechanical strength, corrosion resistance, and stone chip protection while remaining applicable through conventional painting processes.
2Reliability
If the composition provides strong adhesion and hardening, then protection performance improves, but the formulation complexity increases
Solution Approach 1:
The patent merges multiple functions into a single UV-curable composition formulation. The acrylate resin system simultaneously provides adhesion, hardening, flexibility, and UV curing capability, eliminating the need for separate primers, topcoats, and complex multi-step application processes required by conventional systems.
3Productivity
If the composition cures quickly with UV radiation, then productivity improves, but the need for specialized curing equipment increases complexity
Solution Approach 1:
The patent replaces thermal or chemical curing mechanisms with photopolymerization initiated by UV radiation. This substitution enables rapid curing at ambient temperatures without requiring high-heat furnaces or extended chemical reaction times, achieving high productivity with relatively simple UV curing equipment.
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 offers excellent protection against corrosion and stone chips, with strong adhesion to various surfaces, including metals, and maintains heat resistance up to 140 °C, curing quickly and allowing for easy re-painting, while being solvent-free and VOC compliant.
Implementation Method 1
A composition which is curable by electromagnetic radiation, in particular by UV radiation
Data Source
AI summary
The invention relates to a UV-curable composition, comprising at least one aliphatic epoxy acrylate as the photochemically cross-linkable component, and at least one aromatic epoxy acrylate, and/or at least one preferably aliphatic polyester acrylate, at least one reactive diluent, at least one photoinitiator, at least one filler, and/or at least one pigment, and optionally one or more auxiliary additives. The invention further relates to the use of such a composition as a coating composition, to a method for painting substrates using such a composition, a cured paint, which is produced or can be produced from such a composition, and to a substrate, particularly a vehicle axle comprising such a paint.