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Product Introduction
STD7730 is a two-component, solvent-free epoxy structural adhesive with high thixotropic paste consistency, suitable for mechanical dispensing. After application at room temperature, it is cured by heating at 70-80°C and achieves optimal performance upon cooling. Designed for bonding ultra-large wind turbine blades, offshore wind turbine blades, and similar large composite structures.
Characteristics & Applications
Characteristics:
-
Excellent thixotropy and anti-sagging properties
-
Long open time
-
Low density, high toughness, and strength
Applications:
-
Bonding for ultra-large epoxy FRP wind turbine blades
Typical Physical Parameters of Components (Before Curing)
|
Component |
Liquid A |
Liquid B |
|---|---|---|
|
Appearance |
Yellow high-thixotropic paste |
Blue high-thixotropic paste |
|
Viscosity (25°C)/mPa·s |
4,000-10,000 |
4,000-10,000 |
|
Mixed Viscosity (25°C)/mPa·s |
4,000-10,000 |
4,000-10,000 |
|
Post-Curing Color |
Green |
Green |
Curing Conditions and Processes
|
Component |
Liquid A |
Liquid B |
|---|---|---|
|
Weight Ratio |
100 |
50 |
|
Pot Life (100g, 25°C)/min |
180-210 |
180-210 |
|
Curing Conditions |
75°C/5h |
75°C/5h |
Accurate proportioning and thorough mixing are required.
Properties of Cured Material
|
Property |
Value |
|---|---|
|
Tensile Strength (MPa) |
≥56 |
|
Tensile Modulus (MPa) |
≥3,000 |
|
Elongation at Break |
≥3% |
|
Glass Transition Temperature (°C) |
≥70 |
|
FRP/FRP Tensile Shear Strength (MPa) (0.5mm bondline) |
≥22 |
|
FRP/FRP Tensile Shear Strength (MPa) (3mm bondline) |
≥15 |
*Data represents typical cured properties and should not be interpreted as product specifications. Cured at 75°C/5h.
Packaging
25kg, 200kg, 1000kg
Storage Conditions & Shelf Life
-
Store in a cool, dry, and clean environment.
-
Seal immediately after use.
Shelf life in original packaging under proper storage conditions: 12 months.
Personal Protection
|
Personal Protective Equipment |
Impermeable gloves to avoid skin contact. |
|
Respiratory Protection |
No special protection required. |
|
Eye Protection |
Chemical splash goggles recommended. |
|
Body Protection |
Wear protective clothing resistant to this product. Equip with boots, gloves, eyewash stations, and emergency showers as needed. |
First Aid
Skin Contact
-
Rinse thoroughly with soap and water for 5 minutes or until contaminants are removed.
Eye Contact
-
Lift eyelids and rinse with running water or saline for 20 minutes.
-
Seek immediate medical attention.
Inhalation
-
Move to fresh air immediately.
-
Seek medical help if symptoms persist.