TDI Polyester Polyurethane Prepolymer Mining Grade Abrasion Resistant Shore A90 For PU Scraper Sieve Plate
MOQ:
100 Kilograms
Delivery Time:
5-7 working days for stock, 15-25 days for bulk orders
Brand:
ExceedChem
Product Description
Mining Grade TDI Polyester Polyurethane Prepolymer — Abrasion Resistant Shore A90
This TDI-based polyurethane prepolymer system is manufactured by ExceedChem with ISO 9001:2015 certified quality control. Our TDI prepolymers are produced using advanced polymerization technology ensuring consistent batch-to-batch performance and long-term reliability for industrial elastomer applications.
Key Characteristics
- Mining Grade Formulation: Specifically engineered for heavy-duty mining and quarrying applications with enhanced impact resistance
- Superior Abrasion Resistance: DIN 53516 abrasion loss below 35 mm³ ensuring extended service life in harsh environments
- High Impact Resistance: Excellent resistance to impact forces from falling rocks, ores and abrasive slurries
- Polyester Backbone: Provides excellent oil resistance and mechanical strength essential for mining equipment components
- Consistent Shore A90 Hardness: Optimized hardness for mining scraper blades, wear strips and chute liners
Typical Applications
Heavy-duty applications including PU mining scrapers, sieve plates, wear strips, impact bars, chute linings, conveyor belt scrapers and other quarrying equipment components. All products exhibit excellent abrasion resistance, water resistance, and reliable mechanical properties. Color can be adjusted by adding pigment to meet specific customer requirements.
Processing Guidelines
- Preheat the prepolymer to 80-85℃ and maintain for vacuum degassing until all bubbles are removed
- Melt the curing agent (MOCA at 110-120℃ or use liquid E300 DMTDA at room temperature)
- Blend prepolymer with curing agent at the recommended ratio based on NCO content
- Vacuum degas the mixture again for 2-3 minutes
- Cast into preheated molds (100-110℃) and cure at 100℃ for 8-16 hours
- Post-cure at room temperature for 7 days for optimal properties
Packaging & Storage
Available in 20kg/drum or 200kg/drum with nitrogen-sealed packaging. Store in a cool, dry place away from moisture and direct sunlight. If not used completely in one operation, refill with nitrogen gas before resealing. Shelf life is 6 months in original unopened packaging under recommended storage conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Application Grade | Mining and Quarrying |
| Polyol Type | Polyester Polyol |
| Isocyanate | TDI 80/20 |
| Hardness | Shore A90 (±2) |
| NCO Content | 4.3% - 6.0% (±0.2%) |
| DIN 53516 Abrasion | <35 mm³ |
| Appearance at 25℃ | White to yellowish solid |
| Curing Agent | MOCA |
Custom formulations are available upon request. We offer equivalent products to ERA Polymer (Australia), COIM (Italy/Singapore), and other major brands. Please contact us with your specific requirements for a tailored solution.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Qingdao Exceed Fine Chemicals Co.,Ltd
Location
Room 602, Building No. 9, Guoxin Haichuang Industrial Park, No. 50 Binhai Road, Jimo District, Qingdao, Shandong, China. 266000
Contact Person
Louis.liu