Structural Sealants
Product information：
|
Item |
Typical Value |
Test Method / Standard |
|
Appearance |
Uniform, smooth paste; no crusting/bubbles |
Visual Inspection |
|
Curing Type |
Neutral cure (alcohol-based or oxime-based) |
- |
|
Tack-Free Time (25°C, 50% RH) |
5 – 30 minutes |
GB/T 13477.5 |
|
Curing Rate |
2 – 4 mm / 24 hours |
GB/T 13477.5 |
|
Density |
1.30 ± 0.10 g/cm³ |
GB/T 13477.2 |
|
Shore A Hardness |
25 – 35 |
GB/T 531.1 |
|
Tensile Strength |
≥ 0.8 MPa |
GB/T 528 |
|
Elongation at Break |
≥ 400% |
GB/T 528 |
|
Tear Strength |
≥ 10 kN/m |
GB/T 529 |
|
Modulus @23°C (23% elongation) |
0.4 – 0.6 MPa |
GB/T 22083 |
|
Movement Capability |
±25% ~ ±50% |
GB/T 22083 / ISO 11600 |
|
Adhesion to Various Substrates |
Good adhesion, no substrate failure |
GB/T 13477.8 |
|
Mildew Resistance Grade |
Grade 0 (Excellent, top level) |
ASTM G21 / GB 1741 |
|
Temperature Resistance |
-50°C to +180°C |
- |
|
UV Aging Resistance |
No cracking, chalking, or peeling |
Artificial Weathering Test |
|
Shrinkage Rate |
≤ 10% |
GB/T 13477.6 |
|
VOC Content |
≤ 30 g/L (low VOC, eco-friendly) |
US EPA Method 24 / GB 18583 |
|
Packaging |
300mL (cartridge) / 590mL (sausage) |
- |
|
Shelf Life |
12 months (unopened, stored below 25°C) |
- |
Structural sealant is a high-performance silicone-based adhesive, cured through condensation or addition reaction. With its unique molecular structure, it provides outstanding weather resistance, superior bonding strength, and long-lasting structural sealing. It is widely applied in curtain wall systems, glass assemblies, and bonding of various substrates such as metal, stone, and concrete.
Key Features
High Bonding Strength
Excellent adhesion to glass, aluminum, stainless steel, concrete, and most construction substrates.
Superior Weather Resistance
Effectively withstands UV exposure, rain, humidity, and extreme climates without deterioration.
Durable & Flexible
Maintains elasticity after curing, absorbs stress, and accommodates structural movement.Eco-Friendly – Low VOC, non-
corrosive, and compliant with international environmental standards.
Easy Application
Single-component, smooth extrusion, and convenient tooling for efficient construction.
Performance
- Adhesion Strength – High modulus and strong bonding capacity, ensuring safety in curtain wall structures.
- Temperature Resistance – Continuous service range from -40°C to +120°C, withstanding higher peaks for short durations.
- Elastic Modulus – Excellent elongation and recovery, adapting to thermal expansion and contraction of substrates.
- Aging Resistance – No chalking, cracking, or deterioration under long-term outdoor exposure, service life over 20 years.
- Compatibility – Good compatibility with most curtain wall accessories and sealing materials.
Storage & Shelf Life
Storage Conditions
Keep in a cool, dry, and well-ventilated place, away from direct sunlight and high temperatures.
Recommended Temperature
Store between 5°C and 27°C.
Shelf Life
12 months in unopened original packaging; products beyond shelf life should be tested and confirmed before use.
Color
White, black, transparent, etc. The color can be customized as needed.
Product Details:
FAQ
Q: Is a primer required before application?
A: In most cases, a primer is not needed for common substrates. However, for porous or difficult-to-bond surfaces, a compatibility test or primer may be recommended to ensure optimal adhesion.
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