Secondary Sealing IG Two Part Structural Silicone Sealant
Silicone Structural Insulating Glass Sealant for secondary seal
Two part silicone sealant suited for the secondary sealing in structural insulating glass units
FEATURES
Two part, neutral fast cure rate, suitable for factory application.
High level of tensile strength and mechanical properties.
Excellent adhesion to a wide range of substrates including coated glass, low -E glass, tempered glass, laminated glass, aluminium and steel spacers etc.
Excellent weatherability and high resistance to ultra-violet radiation ,heat and humidity, and ozone.
Excellent resistance to temperature extremes, unaffected performance from –50 ℃ to +150 ℃.
Excellent unprimed adhesion to wide range of substrates.
Good compatibility with other neutral silicone sealants.
COLOURS
Part A (base) of GB 886 is available in white, part B(curing agent) in black, black colour after mixing.
BASIC USES
GB 886 Silicone Structural Insulating Glass Sealant is specially designed for use as secondary sealant for structural insulating glass units.
TYPICAL PROPERTIES
These values are not intended for use in preparing specifications.
| Test Method | Property | Unit | Standard | Result |
| GB/T 13477 (ISO 7390) | Slump | mm | ≤3 | 0 |
| GB/T 13477 (ISO 9048) | Extrusion rate | s | ≤10 | 1.9 |
| GB/T 13477 (ASTM D2377) | Tack free time | h | ≤3 | 1.3 |
| GB/T 13477 (ISO 8339) | Modulus at 10% extension | MPa | ≥0.15 | 0.22 |
|
GB/T 531 (ISO 7619 )
53113477 |
Hardness | Shore A | 30～60 | 43 |
| GB/T 13477 | Adhesion at 25% extension |
No failure |
No failure | |
| GB/T 13477 (ISO 8339) | Tensile strength at |
MPa
|
||
| 23℃ | ≥0.60 | 1.13 | ||
| 90℃ | ≥0.45 | 0.87 | ||
| -30℃ | ≥0.45 | 1.58 | ||
| water immersion | ≥0.45 | 1.03 | ||
| water-UV exposure | ≥0.45 | 0.98 | ||
| GB 16776 (ASTM C 792) | Heat aging | |||
| weight loss | % | ≤6.00 | 3.4 | |
| chalking | Nil | Nil | ||
| cracking | Nil | Nil |
*GB: Chinese National Standard
ASTM: American Society for Testing and Materials
ISO: International Standardization Organization
PACKAGING
GB 886 is available in kit: part A base in 200L drums (net 190L), part B is available in 20L pails (net 19L).
SPECIFICATIONS
GB 886 is designed to meet or even exceed the specification of Chinese national standard GB24266-2009.
STORAGE AND SHELF LIFE
GB 886 should be stored in original unopened containers. It has a shelf life of months from the date of manufacture.
LIMITATIONS
GB 886 should not be applied:
For structural glazing of glass units onto a metal frame. GB 992 two part structural silicone and GB 999 one part structural silicone are recommended for that application.
To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulks.
To frost laden or damp surfaces.
For continuous water immersion.
When surface temperature below 4℃ or over 50℃.
Get in Touch
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