In harsh outdoor environments such as bridges, steel structures, petrochemical facilities, and energy equipment, protective coatings must withstand not only UV radiation, salt spray, and chemical corrosion, but also mechanical impact, structural deformation, and temperature fluctuations.
However, traditional high-performance anticorrosion coatings often face a challenge: Higher hardness may lead to brittleness, while improved flexibility may compromise weather resistance and durability.
To overcome this challenge, Quark New Material has developed Durle® SH-219E, a high-performance epoxy-modified polysiloxane resin system designed to achieve an optimized balance between: Weatherability + Mechanical Durability + Construction Performance. SH-219E provides a comprehensive solution for long-life industrial protection applications.
1. High Solid Content Design for Better Efficiency and Lower VOC
SH-219E adopts a high solid content formulation: Clear coat: 85.10%; Pigmented coatings: 92.07%(post-curing)
The high solid content design helps:
✔ Reduce VOC emissions
✔ Increase effective dry film thickness per application
✔ Reduce coating passes
✔ Improve construction efficiency
For large-scale industrial projects, high solid content contributes to better productivity and more sustainable coating solutions.
2. Enhanced Mechanical Performance - Protection Beyond Corrosion Resistance
During transportation, installation, and operation, industrial equipment is often exposed to mechanical impact and structural movement. To address these challenges, SH-219E has been optimized for superior toughness and flexibility.
Test results demonstrate that SH-219E provides: Higher impact resistance, Better flexibility; Reduced risk of coating damage caused by impact, transportation, and structural deformation
3. Excellent Weatherability for Long-Term Outdoor Protection
UV exposure is one of the major causes of coating degradation, including gloss loss, chalking, and color fading.
Durle® SH-219E has been evaluated through accelerated weathering tests including: QUV-B accelerated UV aging and QUV-A long-term weathering simulation. The results demonstrate excellent gloss retention and color stability.
QUV - B Performance – Strong UV Exposure Resistance
Under intensive UV radiation conditions:
✔ SH-219E shows significantly improved resistance to gloss loss
✔ Better color retention and yellowing resistance;
✔ Suitable for strong sunlight exposure environments.
QUV - A Performance – Long-Term Natural Weathering Stability
4. Chemical Resistance Verification
The SH-219E pigmented coating system was evaluated under acid and alkali immersion conditions.
| 5% H2SO4 | 5% NaOH | |
| 10 days | No abnormality | Slight whitening |
The coating demonstrates: Excellent acid resistance; For long-term strong alkaline environments, further formulation optimization may be required according to specific application conditions.
5. Key Advantages of Durle® SH-219E
High Solid Content
More efficient coating application with reduced VOC emissions.
Excellent impact resistance and flexibility for demanding industrial environments.
Outstanding Weatherability
Long-term outdoor durability.
Reliable Application Performance
With continuous material innovation, Quark provides: Longer-lasting protection, higher performance, and more reliable coating solutions for global industrial applications.
