MF889A Silicone stone weathering sealant
APPLICATIONS
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 stonc, glass and most other construction substrates without primer. It casily extrudes in any weather and cure at ambient temperature by reaction with moisture in the air to form a durable, flexible silicone rubber seal.
FEATUR ES
No corrosion and pollution to porous building materials such as granite and marble.
Suitable for use on extension/compression movement capability of up to25% 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.
APPLICA BLE STANDAR DS
GB/T 23261 1 S25HM
ASTMC920TypeS, GradeNS, Class25
SHELF LIFE AND STORANGE
12 months from the date of manufacture,store in a low moisture, dark place below 30 °C in the original unopened packing.
COLORS
Black/Grey/White
Application method
Surface cleaning
Remove all impurities and pollutants such as grease, dust, water stains, frost, surface stains, defective sealants, assembly accessories, and protective coatings in the seams and assembly depression.
Non-porous materials such as metals and glass must be used to clean the surface according to the "double cloth wiping". In all cases, the solvent must be wiped with a clean, no descending white cloth. Methods of cleaner or soapy water.
The porous material must be ground, saw, rinsing (water temple), machine B grind or synthesis the above method cleans the surface, and be sure to keep him to completely clean and dry. The material such as dust and loose particles should be blown off with oil-containing compressed air or by vacuum cleaner.
Use primer
When the MF889A silicone stone weather resistant seal is usually used, i is used. Over, you must test by a bonding test to determine if a primer is required. If the test is required to determine the primer, the primer is poured into a piece of offset to a thin layer to the surface of the sewing to the thin layer, and it is safe.
Shield
Open-well polyurethane foam rod, closed porosity polyethylene and unsettled polyoleacid material are recommended liner materials. For shallow seams, it is recommended to use a polyethylene tape to prevent three-sided bonding.
liner material
The parts near the seam are shaded to ensure that the work line is perfect. Never let the shielding tape contact the cleaning surface that will be rubbed. After the glue is completed, before the sealing gel has not been fell, we must be trimmed immediately. After the repair work is completed, the shielding tape should be removed immediately.
Glue method
Install the appropriate pad material, bond the spacer or tape as required.
The MF889A silicone stone weather resistant sealing gel is continuously squeezed and filled with seams, and the sealing adhesive is compacted in the gasket material and the surface of the seam in the surface of the sealing glue surface. It is recommended to use a convex tool to trim the surface to be concave, and soap or water can be used as a helper material when trimming. After the trimming, the shield tape was torn off immediately.
Uncorrified silicone sealants should be careful not to splash into the unbelrable surface, such as polished granite or other natural stone, because these unsucked silicone sealants cannot be completely removed with organic or chlorinated solvents, so These surfaces must be obscured, or be careful when geling to prevent sealing gums from being in contact with these surfaces, once uncured sealants come into contact with these surfaces, it will leave a film on the surface, which may affect Beautiful view of the surface of the substrate.
Operation precautions
If you accidentally enter your eyes, you should immediately use a lot of water. It is not allowed to contact the skin for a long time, avoiding childhood contactless food, drug or cosmetics, please do adhesive tests and refer to the company's technical information and safety data sheets, understand Safe use, hazards, etc. information for products. If the security matters not involved in this product, please follow the requirements of JGJ102.
Storage and validity
Packing the goods, in a cool, ventilated, dry, can be stored in 12 months, using the "validity" of the product packaging
Package
Plastic tube: 300ml per piece, 25 soft packages per box: 592ml each, 20
Limit
This product is not allowed to be used as a structural glue, nor is it tested or stated as suitable for medical or medicinal.
This product is not suitable for:
Groundwater seam or excessive friction
Long-term immersion in the water
It is possible to seep over the oil, plasticizer, solvent surface, or part of the vulcanized rubber gasket or tape
Frost or moist surface
Completely in contact with the air in the air (sealed adhesive required water gas curing) Sealed glue surface is painted in the paint (- Paint cannot be attached to the silica gel surface)
Direct contact with food or other food grade surface applications
♦ 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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