Curing Resin Specifications
Product Overview
Curing resins are specialized thermosetting polymers formed by the condensation reaction of phenol or substituted phenols with formaldehyde. These heat-reactive materials exhibit exceptional thermal stability, chemical resistance, and mechanical strength, making them essential components in various industrial applications. The resins demonstrate excellent adhesion properties, low water absorption, and superior dimensional stability under elevated temperatures.
As cross-linking agents, curing resins play a crucial role in rubber processing, adhesive formulations, and coating systems. Their methylol-functional groups enable efficient cross-linking with elastomeric substrates, resulting in superior mechanical and thermal performance with excellent heat resistance and reduced compression set.
Technical Specifications
| Grade | SL-7015 | SL-7025 | SL-7025Y |
|---|---|---|---|
| Composition | Heat reactive octyl phenol-formaldehyde resin | Thermo-reactive para-tert-butylphenol formaldehyde resin | Thermo-reactive para-tert-butylphenol formaldehyde resin |
| Appearance | Yellowish green block (flake) | Light yellow to yellow solid | Light yellow to yellow solid |
| Softening Point (Ring & Ball) | 80-95°C | 80-120°C | 83-93°C |
| Methylol Content | 8.0-13.0% | 8-14% | 10-14% |
Applications
- Tire industry and medicine seal products
- Paint manufacturing and adhesives
- Rubber rollers and industrial applications
- Contact adhesives based on polychloroprene with long open time
- Curing resin for IIR, NR and SBR with excellent heat resistance
- Coating and ink industry applications
- Compatible with IIR, EPDM, NBR, CR and NR rubbers
- Vulcanization agents in rubber processing industries
- Cross-linking agents for natural rubber and synthetic elastomers
Technical Notes
- SL-7015: Flake product with no dust, easily dissolved in solvents and mixed with rubber compounds. Recommended dosage: 8-12 phr. Use with 5-10% neoprene or 2-5% metal halide as activator.
- SL-7025 & SL-7025Y: Designed for contact adhesives with excellent heat resistance and small compression set properties.
- All grades are soluble in aromatic solvents and form vulcanized compounds with excellent thermal stability.
Packaging and Storage
Packaging: 20kg PE bag or Kraft bag with inner PE coating
Storage: Cool, dry place below 35°C (25°C for SL-7025Y), 12 months shelf life. Recommended use within 6 months to prevent agglomeration. Avoid sunlight and moisture exposure.
Safety Information
- Refer to Material Safety Data Sheets (MSDS) prior to using these resins
- Follow proper handling procedures and safety precautions during use
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