- Customer: Lingyun (Coating Manufacturer for E-Motorcycle Exterior Components)
- Cooperation Model: ODM Customized Development
- Final Application: Electric Motorcycle Exterior Parts (ABS+PC Substrates)
- Product: Chrome Effect Silver Resin
Customer Background
Lingyun specializes in coatings for electric motorcycle exterior components, serving electric motorcycle manufacturers as its downstream customers. The project focused on developing a customized Chrome Effect Silver Resin that delivers both a premium metallic appearance and excellent adhesion on ABS+PC mixed substrates, helping the customer enhance the competitiveness of its chrome coating solutions.
ABS+PC composite substrates are widely used in electric motorcycle components such as body panels, decorative trims, and instrument covers. However, due to the significant differences in polarity and surface properties between ABS and PC materials, achieving stable coating adhesion on both substrates remains a challenge.
The customer had clear requirements:
- Substrate: ABS+PC mixed plastic substrate
- Performance: Excellent metallic finish and strong adhesion performance
- Application: Surface chrome coating for electric motorcycle exterior components
Challenge: Adhesion Issues on ABS+PC Mixed Substrates
Achieving strong adhesion on ABS+PC composite substrates has always been a challenge in plastic coating applications. Due to the different surface energies of ABS and PC, chrome coatings may struggle to form a uniform and durable bond across both materials.
During cross-cut adhesion testing, coatings often show inconsistent adhesion performance between ABS and PC areas, especially around the interface between the two materials, where localized peeling or coating failure may occur.
The customer required the chrome coating to pass the cross-cut test, which means the coating system needed to achieve Class 0 adhesion (cut edges completely smooth with no coating removed) or Class 1 adhesion (coating detachment at the intersections not exceeding 5%). This requirement tested the resin system’s compatibility and adhesion capability on mixed plastic substrates.
Solution Highlights
| Performance Area | Customer Requirement | Our Solution |
| Metallic Appearance | Premium metallic finish effect | Developed a highly oriented resin system that enables aluminum pigments to achieve uniform alignment, delivering a smooth and refined chrome-like finish |
| Adhesion Performance | Strong adhesion on ABS+PC | Optimized Chrome Effect Silver Resin specifically for ABS+PC mixed substrates, creating strong bonding on both ABS and PC surfaces |
| Cross-Cut Adhesion Test | Must pass adhesion test | Achieved Class 0 cross-cut adhesion, with smooth cutting edges and zero coating loss |
| Application Process | Compatible with existing production line | Fully matched the customer’s existing coating process without requiring process adjustments |
Customer Feedback
After evaluation of the Chrome Effect Silver Resin samples, the customer’s technical team provided highly positive feedback:
- The coating passed the cross-cut adhesion test on the first trial, achieving Class 0 adhesion, with no peeling in either ABS or PC areas.
- The metallic finish was smooth, refined, and visually appealing, meeting the appearance requirements of electric motorcycle exterior components.
- Adhesion performance remained stable and consistent across the ABS+PC mixed substrate.
The customer’s technical manager commented:
“The biggest concern for this project was the adhesion issue at the ABS and PC interface. We did not expect the problem to be solved successfully with the first sample trial.”
Project Progress
The project has completed sample approval, and the customer officially placed an order on July 5.
If you are looking for metallic finish paint solutions for ABS, PC, or mixed plastic substrates, Boya Chemical provides customized Chrome Effect Silver Resin development to help solve challenging chrome coating applications.
