Introduction
SINOMER® PM839 is a thiol-terminated polymer curing agent (CAS 72244-98-5) engineered for fast, energy-efficient curing in epoxy resin systems. As a sustainable alternative to traditional agents like Capcure 3-800, it delivers rapid crosslinking with minimal environmental impact, making it ideal for electronics, coatings, and photovoltaic (PV) silicon rod cutting adhesives,Can replace Capcure 3-800;GABEPRO GPM-800;Polythiol QE-340M.
Key Benefits
- Rapid Curing: Achieves full cure at 25–40°C within 1–2 hours, slashing production downtime.
- Low Shrinkage (<1%): Reduces stress-induced defects in delicate applications like PV wafer processing.
- High Adhesion: Bonds strongly to metals, ceramics, and silicon (tested per ASTM D4541).
- Eco-Friendly: Halogen-free (Cl ≤800 ppm), RoHS/REACH compliant, and low-VOC (<1.2%).
Applications
Electronics Encapsulation
-
- Potting compounds for circuit boards, ensuring moisture and thermal resistance.
- Example: Cures at 25°C in 2–4 hours, enabling high-throughput manufacturing.
- Anticorrosive Coatings
- Marine/industrial coatings with enhanced chemical resistance.
- Photovoltaic Silicon Rod Cutting Adhesives (Target Long-Tail Keyword)
- Precision bonding for diamond wire sawing of silicon wafers.
- Performance Highlights:
- Reduces wafer breakage to <0.5% (vs. 1.5–3% industry average).
- Resists glycol-based coolants and 120°C cutting heat.
- Jewelry & Craftwork Bonding
- Clear, non-yellowing bonds for delicate materials.
Technical Specifications
| Property | Value |
|---|---|
| Appearance | Colorless transparent liquid |
| Viscosity (25°C) | 12,000–14,000 mPa·s |
| Mercapto Equivalent | ≥3.0 |
| Storage | Stable under nitrogen, 12-month shelf life |
Case Study: PV Wafer Manufacturer Efficiency Boost
- Challenge: 2.8% wafer breakage due to adhesive stress.
- Solution: Adopted SINOMER® PM839-based adhesive.
- Results:
- Breakage reduced to 0.4%; annual savings: $150,000.
- 20% faster production via 1–2 hour curing at 30°C.
Why Choose SINOMER® PM839?
- Cost Efficiency: 30% lower energy use vs. high-temperature curing.
- Performance: Exceeds ASTM/ISO benchmarks for hardness (≥3H) and thermal stability.
- Sustainability: Aligns with global green manufacturing standards.
Get Started Today!
Optimize your epoxy or PV adhesive process with SINOMER® PM839.
📧 Contact Us: info@sinocurechem.com | 📞 +86 15668330235