UV Curable Polyurethane Acrylate Coating for Anti-Steel and Hardness
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Solution Overview
Problem
Current UV curable coating compositions exhibit poor anti-steel properties, as evidenced by significant differences in contact angle before and after steel wool testing, necessitating an improvement in fingerprint resistance, anti-steel performance, and hardness.
Innovation Solution
A UV curable coating composition comprising a high-functionality UV curable polyurethane acrylate with a functionality of 6 or more, combined with 0.1-3 wt.% fluorine-containing acrylic soil-repellent, and comprising 5-50 wt.% of six-functionality and ten-functionality aliphatic polyurethane acrylates, which enhances abrasion resistance and maintains contact angle stability after steel wool testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional UV curable coating compositions are used, then the coating provides basic protective properties, but the anti-steel property is poor with significant contact angle difference before and after steel wool testing
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating fluorine-containing acrylic soil-repellent (0.1-3 wt.%) and high-functionality polyurethane acrylates (5-50 wt.% six-functionality and 5-50 wt.% ten-functionality) to improve contact angle stability and anti-steel properties while maintaining UV curability
Solution Approach 2:
The patent creates a composite coating system combining fluorine-containing acrylic soil-repellent with high-functionality polyurethane acrylates (6-functional and 10-functional) to achieve synergistic effects that simultaneously improve anti-steel property, contact angle stability, fingerprint resistance, and hardness
2Strength
If high functionality polyurethane acrylate is used to improve hardness and anti-steel, then abrasion resistance increases, but formulation complexity increases
Solution Approach 1:
The patent optimizes the functionality parameter of polyurethane acrylate to 6 or 10, and controls the weight percentage ranges (5-50% for six-functionality and 5-50% for ten-functionality) to achieve high abrasion resistance while managing formulation complexity through defined compositional parameters
3Reliability
If fluorine-containing acrylic soil-repellent is added to improve fingerprint resistance, then soil repellency increases, but the coating composition complexity increases
Solution Approach 1:
The patent adds fluorine-containing acrylic soil-repellent at a controlled concentration of 0.1-3 wt.% to provide fingerprint resistance and soil repellency while minimizing composition complexity through precise dosage control
Solution Approach 2:
The patent integrates fluorine-containing acrylic soil-repellent into the polyurethane acrylate-based coating matrix to create a composite formulation that provides fingerprint resistance without significantly increasing overall formulation complexity
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 solution provides a coating with improved fingerprint resistance, high anti-steel properties, and high hardness, maintaining a stable contact angle and excellent abrasion resistance, suitable for substrates like PMMA, PC, and PET, while being environmentally friendly and suitable for rapid curing.
Implementation Method 1
UV curable coating composition having fingerprint resistance, high anti-steel and high hardness... UV curable coating composition comprising a high-functionality UV curable polyurethane acrylate
Implementation Method 2
0.1-3 wt.% of a fluorine-containing acrylic soil-repellent... improved fingerprint resistance... maintains a stable contact angle
Data Source
AI summary
A high-hardness anti-steel wool UV curable coating composition comprises a high-functionality UV curable polyurethane acrylate. A method of coating a substrate with the high-hardness anti-steel UV curable coating composition and the substrate coated with the same are also provided.