Mf889 Silicone Weatherproof Sealant for Curtain Wall

• After-sales Service: 24 Hours After-Sales Service
• Type: Silicone Sealant
• Seal Tape Kind: Organic Material
• Seal Tape Usage: Architecture
• Material: Composite Materials
• State: Fluid
• Model NO.: MF889
• Mildew Proof: Mildew Proof
• Bonding Material: Glass
• Transport Package: Sausage
• Specification: 592 ml / 20 pcs/carton
• Trademark: SILANDE
• Origin: China
• HS Code: 3506919010
• Production Capacity: 50000PCS/Years

Product Description

MF889 Silicone Weatherproof Sealant for curtain wall
Features and advantages

1. It is an ideal sealing material for stretching, connecting, peripheral sealing and other moving joints
2. Neutral curing, suitable for coated glass, float glass, wooden materials, aluminum profiles, galvanized steel,

Masonry and other materials

1. The original joint width can be stretched/compressed 35%
2. Excellent weather resistance, sunlight, rain, ice, snow, ozone or extreme temperature will not cause adverse effects
3. For most building materials and components, good adhesion can be achieved without primer
4. Easy to use, can be extruded at any time by using a general glue gun
5. Excellent anti-sag performance

Composition

1. One-component, neutral, room temperature moisture curing silicone sealant.

Application

1. MF889 silicone weathering sealant is suitable for glass assembly, curtain wall and building exterior wall design.It can be weatherproof and waterproof.

Product manual
MF889 silicone weather-resistant sealant is a one-component, non-sagging, neutral curing sealant. It can be easily extruded and used at most outside ambient temperatures and is formed by the reaction of water vapor in the air. Durable and elastic silicone sealant.

Colour
In addition to black, gray and white, it can also be produced in consultation according to the special colors required by customers.
Adopt standards
MF889 silicone weathering sealant meets or exceeds the following standard specifications:
JC/T 882 | 25HM
GB/T 14683 G, F 25HM
GB/T 22083 G, F 35HM
ISO11600F, G 25HM
ASTMC920S type, NS type, 35HM, suitable for NT, G, A type applications

Operation precautions
If it gets into eyes accidentally, rinse with plenty of water immediately
Do not contact with skin for a long time, avoid contact with children
Do not contaminate food, drugs or cosmetics
Before use, please do a bonding test and refer to the company's technical data and safety data sheet to learn about the safe use and hazards of the product. All safety items not involved in this product, please follow the requirements of JGJ 102

Storage and validity period
The packaged product can be stored for 12 months in a cool, ventilated and dry place, and it can be used before the "expiry date" of the outer packaging of the product

Package
Plastic tube: 300ml per tube, 25 tubes per box
Flexible packaging: 592ml per strip, 20 strips per box

Application method

Surface cleaning

Remove all the grease, dust, water stains, frost, surface dirt, residual sealant, glass assembly accessories, protective coatings and other impurities and contaminants left in the joints and assembly parts.

Glue injection

Install the backing material, spacer block, spacer spacer and tape etc. as required. Masking tape should be used in the area connected to the seam to ensure a neat and beautiful sealant line.
For the surface of non-porous materials, there is usually no need to coat the primer to have good adhesion, but for the surface of some porous materials, it may need to be painted to ensure good adhesion. It is recommended to Do adhesion test before starting work.
Continuously squeeze MF889 silicone weather-resistant sealant into and fill up the joints (the sealant can be constructed with a pneumatic glue gun and other glue injection equipment). When using a pneumatic gun, the operating pressure should be adjusted to prevent bubbles from being generated during glue injection.
When the surface of the sealant is not yet skinned, press the sealant onto the backing material and the joint surface with appropriate strength, and smooth the surface of the sealant.
After leveling, remove the masking tape immediately. Do not use liquids such as water, soapy water, or alcohol to help level it.

Use restrictions
This product is not allowed to be used as a structural glue, nor has it been tested or stated as suitable for medical or pharmaceutical use.
This product is not suitable for: joints in groundwater or places subject to excessive friction
Long-term immersion in water may leak oil, plasticizer, solvent on the surface of building materials, or partially vulcanized rubber gasket or tape
On frosty or wet surfaces
A place where the air is completely inaccessible during curing (the sealant needs to be cured by moisture) application of paint on the surface of the sealant (generally paint cannot adhere to the surface of silicone)
Direct contact with food or other food-grade surface applications

Main Specifications
 

Guideline	Test items	skills requirement	Test results
When uncured, test under the conditions of temperature (23±2)ºC and relative humidity (50±5)%
GB/T 13477.2	density,glcm3	-	1.49
GB/T13477.6	Sag,mm	3	0
GB/T 13477.3	Extrusion,mv/min	≥80	360
-	operating hours,min	-	30
GB/T 13477.5	Tack-free time,h	≤3	2.5
	Curing time,d	-	7~14
-	Construction temperature range,ºC		5~40
Curing for 28 days under the conditions of temperature (23±2)ºC and relative humidity (50±5)%
GB/T531.1	hardness,Shore A	20~60	45
GB/T 22083	Displacement ability,%	35	35
-	Temperature resistance range after curing,ºC	-	-60~180
GB/T 13477.8	100% elongation modulus,MPa Elongation at break,% Tensile Strength,MPa	-	0.5 350 1.10