Sikasil® IG-16
1-component silicone insulating glass secondary sealant
Sikasil® IG-16 is a neutral-curing, high-modulus silicone insulating glass secondary sealant with excellent adhesion to many substrates.
- Meets requirements of EN 1279-4
- Suitable for air- and noble gas-filled
insulating glass units - Excellent UV and weathering resistance
- Bonds well to glass as well as metal and plastics spacers
PRODUCT BENEFITS
- Meets requirements of EN 1279-4
- Suitable for air- and noble gas-filled
insulating glass units - Excellent UV and weathering resistance
- Bonds well to glass as well as metal and plastics spacers
Areas of Application
Sikasil® IG-16 is ideal as a secondary edge seal for air and noble gas-filled insulating glass. This product is suitable for experienced professional users only. Tests with original substrates and conditions have to be performed ensuring adhesion and material compatibility.Product Details
| Chemical base | 1-component silicone | |
| Color (CQP001-1) | Black | |
| Cure mechanism | Moisture-curing | |
| Cure type | Neutral | |
| Density (uncured) | 1.5 kg/l | |
| Non-sag properties (CQP061-4 / ISO 7390) | 2 mm | |
| Application temperature | ambient | 5 ─ 40 °C |
| Skin time (CQP019-1) | 25 minutes A | |
| Tack free time (CQP019-3) | 100 minutes A | |
| Curing speed (CQP049-1) | (see diagram) | |
| Shore A hardness (CQP023-1 / ISO 48-4) | 45 | |
| Tensile strength (CQP036-1 / ISO 527) | 1.8 MPa | |
| 100 % modulus (CQP036-1 / ISO 527) | 1.2 MPa | |
| Elongation at break (CQP036-1 / ISO 527) | 300 % | |
| Tear propagation resistance (CQP045-1 / ISO 34) | 6 N/mm | |
| Service temperature | -40 ─ 150 °C | |
| Shelf life | unipack drum / pail | 15 months B 12 months B |
| CQP = Corporate Quality Procedure | A) 23 °C / 50 % r. h. | B) storage below 25 °C |
CURE MECHANISM
Sikasil® IG-16 cures by reaction with atmospheric moisture. At low temperatures the water content of the air is generally lower and the curing reaction proceeds somewhat slower (see diagram 1).
Diagram 1: Curing speed Sikasil® IG-16
Application
Surface preparation
Surfaces must be clean, dry and free from grease, oil and dust. Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond.
Application
The optimum temperature for substrate and sealant is between 15 °C and 25 °C.
Sikasil® IG-16 can be processed with hand, pneumatic or electric driven piston guns as well as pump equipment. For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.
Joints must be properly dimensioned.
Basis for calculation of the necessary joint dimensions are the technical values of the adhesive and the adjacent building materials, the exposure of the building elements, their construction and size as well as external loads.
Joints deeper than 15 mm must be avoided.
Tooling and finishing
Tooling and finishing must be carried out within the skin time of the sealant or adhesive.
When tooling freshly applied Sikasil® IG-16, press the adhesive to the joint flanks to get a good wetting of the bonding surface. No tooling agents must be used.
Removal
Uncured Sikasil® IG-16 may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically.
Hands and exposed skin have to be washed immediately using hand wipes such as Sika® Cleaner-350H cleaning towels or a suitable industrial hand cleaner and water. Do not use solvents on skin.
Overpainting
Sikasil® IG-16 cannot be overpainted.
Application limits
Recommended solution from Sika for structural glazing and window bonding are usually compatible to each other. These solutions consist of products such as Sikasil® SG, IG, WS and WT series. For specific information regarding compatibility between various Sikasil® products and other Sika products contact the Technical Department of Sika Industry.
To exclude materials influencing Sikasil® IG-16, all materials such as gaskets, tapes, setting blocks, sealants, etc., in direct and indirect contact have to be approved by Sika in advance.
Where two or more different reactive sealants are used, allow the first to cure completely before applying the next one.
The above mentioned Sika process materials may only be used in structural glazing or window bonding applications after a detailed examination and written approval of the corresponding project details by Sika Industry.