中文简体
EnglishTGIC-Free Polyester Powder Coating
Industrial-grade protective coating solutions: environmentally friendly, durable, and cost-effective.
Intro to TGIC-Free Polyester Powder Coating
TGIC-Free Polyester Powder Coatings utilize Primid or HAA (Hydroxyalkylamide) as the cross-linking agent instead of the more traditional TGIC (Triglycidyl Isocyanurate). This substitution is made to address specific regulatory and environmental concerns regarding the handling and use of TGIC. These coatings maintain the high performance and exceptional UV resistance characteristic of standard polyester, making them fully suitable for exterior applications. The primary function of the TGIC-Free formulation is to offer a safe, compliant alternative that still delivers robust weatherability, excellent color retention, and strong mechanical properties, particularly necessary for markets with stringent health and safety standards like Europe and certain Asian countries.
Safety Compliance and Performance Retention of TGIC-Free
The shift from TGIC to alternative curatives like Primid is driven by the classification of TGIC as a material of concern in various global regulatory frameworks. The Primid/HAA cross-linker reacts with the carboxyl-functional polyester resin to form a highly durable, three-dimensional network. This cross-linking process ensures that the resulting cured film achieves equivalent or superior physical properties compared to its TGIC-cured counterpart. Specifically, TGIC-Free polyesters exhibit excellent flow and leveling, resulting in a very smooth surface finish, and maintain high resistance to chalking and fading in outdoor environments. The required curing conditions are often similar, typically ranging from 180∘C to 200∘C, though some Primid systems can be formulated for lower cure temperatures. By removing TGIC, manufacturers ensure compliance with specific worker safety guidelines and satisfy increasing consumer demand for environmentally conscious and safer coating materials without sacrificing the necessary protective performance for architectural, automotive, and general exterior applications.
Specifications
| Property | Standard Range/Value |
| Cross-Linker Type | Primid or HAA |
| UV Resistance | Excellent |
| Film Thickness (Recommended) | 60 to 90 microns |
| Flexibility (Conical Mandrel) | Very Good |
| Adhesion (Cross-Hatch) | 5B (Excellent) |
| Cure Schedule | 190∘C/10 min (or as specified) |
| TGIC Status | None Detected (TGIC-Free) |
| Primary Application | Exterior Architectural and General Metal |
Application Fields
- European Export Products: Meeting stringent EU REACH regulations regarding TGIC usage.
- Architectural Components: Window/door frames, facades, and railings.
- Children's Play Equipment: Where enhanced material safety standards are required.
- Outdoor Lighting Fixtures: Requiring high UV stability and regulatory compliance.
- Sensitive Manufacturing Environments: Facilities prioritizing worker safety over traditional chemistries.
Key Characteristics
- Regulatory Compliance: Meets guidelines requiring the exclusion of TGIC for worker safety and material handling.
- Uncompromised Exterior Durability: Retains the high UV resistance and weatherability of standard polyesters.
- Smooth Aesthetic Finish: Provides excellent flow and leveling for minimal surface defects.
- Mechanical Robustness: Offers very good flexibility and impact resistance.
- Global Market Acceptability: Preferred or mandatory for export to certain high-regulation markets.
Comparison: TGIC-Free vs. TGIC Polyester
| Feature | TGIC-Free (Primid/HAA) | TGIC Polyester |
| Regulatory Status | Favorable (Lower hazard classification) | Regulated in certain regions |
| Exterior UV Stability | Excellent (Comparable) | Excellent (Comparable) |
| Film Flexibility | Very Good | Good |
| Cure Window | Can be narrower (Requires tight temp control) | Broader |
| Flow and Leveling | Often Superior | Very Good |
Why choose us
Customization: We have a strong R&D team,and we can develop and produce products according to different requirement of customers.
Cost: We have our own raw material production center.So we can offer the most favourable price and good-quality products directly.
Quality: We have our own testing lab and the most advanced and complete inspection equipment, which can ensure the quality of our products.
Capacity: Our annual production capacity is over 30000 tons, we can meet the needs of different customers with diverse purchase quantity.
Service: We focus on developing high-quality products for top-end markets. Our products are in line with international standards, and are mainly exported to Europe, America, Southeast Asia, South America and other destinations around the world.
Shipment: We are only 200 kilometers away from the Shanghai Port and 230 kilometers to Ningbo port, it is very convenient and efficient to ship goods to any other countries.
Customization
Quality
Capacity
Service
Shipment
Frequently Asked Questions (FAQs)
- Q: Are TGIC-Free powders considered as durable as TGIC powders for outdoor use?
- A: Yes. When properly formulated and cured, TGIC-Free polyesters offer equivalent or in some cases superior mechanical and exterior durability performance metrics to TGIC-cured systems.
- Q: Does the absence of TGIC affect the required cure temperature?
- A: While many TGIC-Free systems cure in the conventional range (180∘C to 200∘C), certain HAA-based systems can be engineered for lower cure schedules, but this is formulation-specific.
- Q: Is TGIC-Free polyester more expensive than standard polyester?
- A: The raw material cost for Primid/HAA curatives can be slightly higher than for TGIC, resulting in a marginal increase in the final powder cost, balanced by the safety and compliance benefits.
Selection Guide: TGIC-Free Polyester
Select TGIC-Free Polyester Powder Coating when:
- The highest priority is compliance with international health, safety, and regulatory mandates for the use of hazardous substances.
- The product is intended for export to regions with strict chemical controls.
- The application requires excellent, long-term exterior weatherability and UV stability.
- The finished parts demand a smooth, high-quality aesthetic finish with minimal surface imperfections.
- The manufacturing environment places a premium on safer material handling for personnel.
