Wind Turbine Blade Infusion Epoxy Resin

Product Description

725-EP1002A&725-EP1001B is a two-component high-performance infusion epoxy resin system specially designed for the manufacturing of wind turbine blades and fiber reinforced composite structures.

The system consists of 725-EP1002A epoxy resin component and 725-EP1001B curing agent, providing excellent processing performance, mechanical strength, and long-term durability for large composite applications.

With low mixed viscosity, extended working time, excellent fiber wetting ability, and controlled exothermic reaction, this epoxy resin system enables smooth resin flow and uniform impregnation during vacuum infusion processes, helping manufacturers produce high-quality composite components with stable performance.

The product is developed to meet the performance requirements of wind turbine blade infusion applications according to German Classification Society standards, making it suitable for demanding renewable energy composite manufacturing.

Product Advantages

Excellent Infusion Performance

The mixed resin system features low viscosity (200-300 cP at 25℃), allowing efficient penetration into reinforcement fibers and improving resin distribution during vacuum infusion manufacturing.

This helps reduce defects such as dry spots and incomplete impregnation in large composite structures.

Long Working Time for Large Composite Components

With a pot life of ≥4 hours at 25℃, 725-EP1002A&725-EP1001B provides sufficient processing time for large-scale composite production, improving manufacturing flexibility and operational reliability.

Low Exothermic Heat Release

The maximum exothermic peak temperature is controlled at ≤100℃, reducing thermal stress during curing and making the resin suitable for large-volume composite structures.

High Mechanical Strength and Fatigue Resistance

After curing, the epoxy resin provides excellent tensile strength, flexural strength, modulus, and fatigue resistance, meeting the requirements of wind turbine blade applications where long service life and structural reliability are required.

Excellent Fiber Wetting Capability

The resin system has good compatibility with reinforcement materials, ensuring effective fiber impregnation and improved laminate quality.

Applications

725-EP1002A&725-EP1001B infusion epoxy resin is widely used for:

Wind Energy Composite Applications

• Wind turbine blades
• Wind blade reinforcement structures
• Nacelle covers
• Fairings
• Large composite housings

Fiber Reinforced Composite Manufacturing

• Glass fiber reinforced composites (GFRP)
• Carbon fiber reinforced composites (CFRP)
• Vacuum infusion composite components
• Lightweight composite structures

Other Industries

• Sports equipment
• Industrial composite parts
• High-performance composite products

Technical Properties

Component A: 725-EP1002A Epoxy Resin

Component B: 725-EP1001B Hardener

Mixed Resin Properties

(Mass Ratio: 725-EP1002A : 725-EP1001B = 100 : 32 ±2)

Cured Resin Performance

(Curing condition: 7h @30℃ + 10h @70℃)

Processing Guidelines

Mixing Ratio

The recommended mixing ratio is:

725-EP1002A : 725-EP1001B = 100 : 32 ±2 (by weight)

Accurate weighing and complete mixing are required to achieve the designed mechanical properties.

Mixing Procedure

Before application:

1. Measure the resin and hardener according to the recommended ratio.
2. Mix thoroughly for at least 2 minutes.
3. Ensure material at the container bottom and corners is fully blended.
4. For automatic mixing equipment, regularly check the discharge ratio and adjust equipment parameters when necessary.

Curing Recommendations

Recommended processing temperature:

20℃-30℃

Recommended curing temperature:

50℃-80℃

The curing process can be adjusted according to:

• Composite structure size
• Production speed
• Heating conditions
• Resin quantity

For large composite applications, optimized curing parameters should be confirmed according to actual production conditions.

Storage and Handling

Storage Conditions

• Storage temperature: 10℃-40℃
• Keep containers tightly sealed
• Store in a dry environment
• Avoid moisture contamination

The curing agent is moisture sensitive and may absorb water and carbon dioxide from the air. Proper sealing after opening is recommended to maintain product quality.

Packaging

725-EP1002A Epoxy Resin

• 220 kg sealed drum

725-EP1001B Hardener

• 200 kg sealed drum

Frequently Asked Questions (FAQ)

1. What is wind turbine blade infusion epoxy resin?

Wind turbine blade infusion epoxy resin is a specialized resin system used with fiber reinforcement materials to manufacture lightweight and high-strength composite blades through vacuum infusion processes.

2. Is 725-EP1002A&725-EP1001B suitable for vacuum infusion?

Yes. The resin system has low viscosity, excellent flow performance, and good fiber wetting capability, making it suitable for vacuum infusion manufacturing of wind turbine blades and composite components.

3. What are the main advantages of this epoxy resin system?

The main advantages include low viscosity, long pot life, low exothermic heat, excellent mechanical strength, fatigue resistance, and reliable processing performance.

4. What industries can use this infusion epoxy resin?

It is mainly used in wind energy, composite manufacturing, sports equipment, and other industries requiring high-performance fiber reinforced composite materials.

5. What is the mixing ratio of this epoxy resin?

The recommended mixing ratio is 100 parts epoxy resin component (725-EP1002A) to 32 parts curing agent (725-EP1001B) by weight.