Fast Curing Wind Turbine Blade Hand Lay-up Epoxy Resin
725-EP3001A&725-EP3002B Fast Curing Wind Turbine Blade Hand Lay-up Epoxy Resin is a two-component epoxy system designed for fiber reinforced composite manufacturing. It provides low viscosity, excellent fiber wettability, fast curing characteristics, good mechanical properties, and reliable performance for wind turbine blades, composite covers, fairings, and other FRP structures.
Product Description
725-EP3001A&725-EP3002B is a two-component modified epoxy resin system specially developed for hand lay-up manufacturing of wind turbine blades and fiber reinforced composite components.
The system consists of 725-EP3001A epoxy resin component and 725-EP3002B hardener, providing excellent processing performance, rapid curing capability, and high-quality composite properties.
Compared with conventional hand lay-up epoxy systems, this product features a shorter curing response, excellent fiber wetting ability, low viscosity, and stable mechanical performance after curing, making it suitable for composite manufacturers requiring improved production efficiency.
The resin system meets the performance requirements of the German Classification Society standards for wind turbine blade paste applications and is suitable for producing structural composite components with high strength, durability, and fatigue resistance.
Product Advantages
Fast Curing Performance
With a pot life of ≥30 minutes at 25℃, this epoxy system provides a faster curing response, helping improve production efficiency for hand lay-up composite manufacturing.
Excellent Fiber Impregnation
The mixed viscosity of 300-1000 cP at 25℃ allows effective resin penetration into reinforcement fibers, ensuring uniform impregnation and improved laminate quality.
Good Processing Performance
The resin offers:
- Low viscosity
- Easy manual application
- Good fiber wettability
- Stable processing characteristics
making it suitable for various fiber reinforced composite production processes.
Reliable Mechanical Properties
After curing, the resin provides:
- High tensile strength
- Excellent flexural strength
- High modulus
- Low water absorption
- Good dimensional stability
for long-term composite applications.
Suitable for Wind Energy Composites
Designed for wind turbine blade paste applications, this epoxy resin provides a balance between processing efficiency and structural performance.
Applications
725-EP3001A&725-EP3002B epoxy resin is used in:
Wind Energy Industry
- Wind turbine blades
- Blade reinforcement structures
- Engine room covers
- Blade fairings
Composite Manufacturing
- Glass fiber reinforced composites
- FRP components
- Hand lay-up composite structures
Other Applications
- Sports equipment
- Lightweight composite products
- Industrial composite parts
Technical Properties
Component A: 725-EP3001A Epoxy Resin
| Property | Unit | Value |
|---|---|---|
| Appearance | - | Colorless transparent syrupy liquid |
| Viscosity (25℃) | cP | 2000-3000 |
| Density (25℃) | g/ml | 1.1-1.2 |
| EEW | g/eq | 165-185 |
| Storage Life | Month | 12 |
Component B: 725-EP3002B Hardener
| Property | Unit | Value |
|---|---|---|
| Appearance | - | Blue clear liquid |
| Viscosity (25℃) | cP | 15-55 |
| Density (25℃) | g/ml | 0.94-1.1 |
| Amine Value | mgKOH/g | 400-550 |
| Storage Life | Month | 12 |
Mixed Resin Properties
Mixing Ratio:
725-EP3001A : 725-EP3002B = 100 : 34 ±2
| Property | Unit | Value |
|---|---|---|
| Mixed Viscosity (25℃) | cP | 300-1000 |
| Density | g/ml | 1.1-1.2 |
| Pot Life (25℃) | min | ≥30 |
| Exothermic Peak Temperature | ℃ | ≤170 |
Cured Resin Performance
Curing condition:
10h @70℃
| Property | Unit | Value |
|---|---|---|
| Density | g/cm³ | 1.1-1.2 |
| Tg (Teig) | ℃ | ≥65 |
| Tg (Tmg) | ℃ | ≥70 |
| Tensile Strength | MPa | ≥60 |
| Tensile Modulus | MPa | ≥2700 |
| Fracture Elongation | % | ≥2.5 |
| Flexural Strength | MPa | ≥100 |
| Flexural Modulus | MPa | ≥2700 |
| Volumetric Shrinkage | % | ≤5 |
| Water Absorption | % | ≤0.5 |
| HDT | ℃ | ≥65 |
Processing Guidelines
Mixing Ratio
Recommended mixing ratio:
725-EP3001A : 725-EP3002B = 100 : 34 ±2
Mixing Procedure
For optimal performance:
- ✅ Accurately measure resin and hardener.
- ✅ Mix thoroughly for at least 2 minutes.
- ✅ Ensure complete mixing at container walls and bottom.
- ✅ Maintain correct mixing ratio during automated processing.
Recommended Processing Conditions
Working temperature:
20℃-30℃
Recommended humidity:
Below 70%
Recommended curing temperature:
50℃-80℃
The curing process can be adjusted according to:
- Component size
- Production requirements
- Heating conditions
Storage and Packaging
Packaging
725-EP3001A
- 220 kg sealed drums
725-EP3002B
- 200 kg sealed drums
Storage Conditions
- Temperature: 10℃-40℃
- Dry environment
- Keep containers tightly sealed
- Avoid moisture contamination
The curing agent is moisture sensitive and may absorb water and carbon dioxide from the atmosphere. Proper sealing after opening is required to maintain final product performance.
FAQ
1. What is fast curing hand lay-up epoxy resin?
Fast curing hand lay-up epoxy resin is a composite resin system designed for manual fiber reinforcement processes where shorter curing time and improved production efficiency are required.
2. What is this epoxy resin used for?
It is mainly used for wind turbine blades, blade covers, fairings, and other fiber reinforced composite structures.
3. What is the difference between this resin and standard hand lay-up epoxy resin?
This system provides a shorter pot life and faster curing response, making it suitable for applications requiring higher production efficiency.
4. Is this epoxy resin suitable for glass fiber composites?
Yes. The resin provides excellent fiber wettability and is suitable for glass fiber reinforced composite manufacturing.
5. What is the mixing ratio?
The recommended ratio is:725-EP3001A : 725-EP3002B = 100 : 34 ±2
