Product Image
Hand Lay-up Resin/
Overview
ALITA 191DC DCPD Type Unsaturated Polyester Resin
Category：Hand Lay-up ResinCode：ALITA 191DC
Applications
ALITA 191DC is an unsaturated polyester resin primarily derived from dicyclopentadiene (DCPD), featuring medium viscosity and medium reactivity.
- Features: High solid content, low viscosity, low shrinkage, and good wetting properties for glass fibers.
- Physical Performance: Provides excellent mechanical strength, water resistance, and heat resistance.
- Applications: Widely used for general-purpose glass fiber reinforced plastic (FRP) products, and also suitable for stone repair and reinforcement.
Specifications
| Inspection Items | Indicator Range | Unit | Test Method |
|---|---|---|---|
| Appearance | Yellow transparent viscous liquid | -- | -- |
| Acid Value | 17 - 23 | mgKOH/g | GB/T 2895-2008 |
| Viscosity (25℃) | 0.25 - 0.45 | Pa.s | GB/T 7193-2008 |
| Solid Content | 68 - 75 | % | GB/T 7193-2008 |
| Thermal Stability (80°C) | ≥ 24 | h | GB/T 7193-2008 |
| Gel Time (25℃) | 5 - 18 | min | GB/T 7193-2008 |
Note: Gel time test system: Accelerator (0.6% Co/Naph) 2%; Curing Agent (Nouryon M-50) 2%.
Properties
| Inspection Items | Typical Casting Value | Typical FRP Value | Unit | Test Method |
|---|---|---|---|---|
| Barcol Hardness | 40 | 66 | -- | GB/T 3854 |
| HDT | 85 | -- | ℃ | GB/T 1634 |
| Elongation at Break | 2.0 | -- | % | GB/T 2567 |
| Tensile Strength | 50 | 330 | MPa | GB/T 2567/1447 |
| Tensile Modulus | 3100 | 17000 | MPa | GB/T 2567/1447 |
| Flexural Strength | 90 | 330 | MPa | GB/T 2567/1449 |
| Flexural Modulus | 3200 | 17000 | MPa | GB/T 2567/1449 |
Usage Instructions
1. Composition: Contains wax; does not contain accelerator or thixotropic agent.
2. Light Sensitivity: Photosensitive; may gel when exposed to light. Do not open packaging until use; avoid exposure to strong light.
3. Curing System Recommendation: * Recommended use of pure cobalt-based accelerators (0.4-2.0%) and MEKP curing agents (1.0-2.5%).
- Not recommended to use colorless accelerators containing copper or potassium salts, as they may lead to poor curing or surface tackiness.
4. Process Adjustments: * If gelling is too fast in high-temperature environments, it is not recommended to drastically reduce curing agent; instead, add an appropriate amount of retarder.
- If surface tackiness occurs in high-humidity environments, wax solution can be added to alleviate the issue.
5. Selection Reminder: 191DC emphasizes high hardness and heat resistance. If higher toughness is required or production conditions are limited, ALITA Orthophthalic 191 resin is recommended.
Storage & Handling
- Safety: Avoid contact with skin and eyes; personal protective equipment must be worn.
- Storage: Strongly recommended to store in a stable environment below 25℃.
- Prohibitions: Keep away from direct sunlight, steam pipes, or other heat sources. No outdoor storage; keep sealed to prevent moisture ingress and monomer loss. Follow the "FIFO" principle.