MF889A
Silicone Stone Weatherproofing Sealant
♦ DESCRIPTION/APPLICATIONS
.TYPICAL PERFORMANCE
SILANDE MF889A Silicone Stone Weatherproofing Sealant, a one-part, RTV, neutral-cure, architectural grade sealant, is designed specifically for the assembly of stone and the weatherproofing of stone, glass and most other construction substrates without primer. It easily extrudes in any weather and cure at ambient temperature by reaction with moisture in the air to form a durable, flexible silicone rubber seal.
- No corrosion and pollution to porous building materials such as granite and marble.
- Suitable for use on extension/compression movement capability of up to ± 25% of the original joint size.
- Excellent adhesion to most building material without primer, such as stone, glass, metal, tiles and anodized aluminium.
- Excellent weather sealing and temperature stability:-60°C to 180°C.
- High elasticity and high modulus.
- Resistant to ozone.
♦ TECHNICAL DATA-TYPICAL PROPERTIES
| TEST ITEMS |
TECHNICAL DATA |
TEST RESULT |
STANDARD |
| Test Conditions: T (23 ±2)°C, (50 ± 5)% R.H. |
| Sag, mm |
W3 |
0 |
GB/T 13477.6 |
| Extrusion Property, s |
W10 |
1.9 |
GBH 16776 |
| Application Time, min |
- |
20 |
- |
| Tack-free Time, h |
W3 |
2.5 |
GBH 13477.5 |
| Curing Time, d |
- |
7-14 |
- |
| Range of Application Temperature, °C |
- |
5-40 |
- |
| Test Conditions: 28d placed at T (23 ±2)°C, (50 ± 5)% R.H. |
| Hardness, Shore A |
20-60 |
51 |
GBfT 531.1 |
| Range of Temperature Resistance, °C |
- |
-60-180 |
- |
| Movement Capability, % |
25 |
25 |
|
o+ . o . Stain Depth
Stain Property, |
W2 |
0 |
GB/T 23261 |
| mm Stain Width |
W2 |
0 |
|
| Modulus at 100% Elongation, Mpa |
|
0.7 |
|
| Elongation at Break, % |
- |
190 |
GBH 13477.8 |
| Tensile Strength, Mpa |
|
1.00 |
|
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