GUIBAO 882 Silicone Insulating Glass Sealant
secondary sealant, secondary seal, silicone sealant, building sealant, IG sealant
- GUIBAO 882 Silicone Insulating Glass Sealant is specially designed for use as secondary sealant for insulating glass units.
- 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, aluminum 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 ℃
- Good compatibility with other neutral silicone sealants
Colours
Part A (base) of GUIBAO 882 is available in white, part B (curing agent) in black, black color after mixing.
Packaging
GUIBAO 882 is available in kit: part A in 200L drums (net 180L), part B in 20L pails (net 18L).
For more details, please download:
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) | Extrudability (after 20 min.) | s | ≤10 | 1.4 |
| GB/T 13477(ASTM D 2377) | Tack free time | h | ≤3 | 1.0 |
| GB/T 531.1 (ISO 7619 ) | Hardness | Shore A | 30～60 | 47 |
| GB/T 13477 (ISO 8339) | Tensile strength | MPa | ≥0.6 | 0.8 |
| GUIBAO 16776 | Adhesion failure | % | ≤10 | 0 |
| GUIBAO 16776 (ASTM C 792) | Heat aging | |||
| weight loss | % | ≤6 | 4.5 | |
| chalking | Nil | Nil | ||
| cracking | Nil | Nil |
*GB: Chinese National Standard
ASTM: American Society for Testing and Materials
ISO: International Standardization Organization
Complete technical information and literature, adhesion testing and compatibility testing results are available from GUIBAO.
Surface Preparation
Clean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, old sealants, surface dirt, or glazing compounds and protective coatings.
Mixing and Dispensing
To obtain the optimal performance of GUIBAO 882, it is recommended that base and curing agent thoroughly mixed using a two-part silicone dispensing machine.
GUIBAO 882 should be mixed at a ratio of 9:1～11:1 base to curing agent by volume, or 11:1～13:1 base to curing agent by weight for optimal performance.
Lot matching of GUIBAO 882 base to curing agent is not required. Before use, it is recommended that curing agent be stirred to ensure the homogeneity of all components.
GUIBAO 882 part B curing agent will react with atmospheric moisture, therefore should not be exposed to air for prolonged periods of time.
Priming
Priming is not usually required when using GUIBAO 882. But it is essential that adhesion is tested prior to use to decide whether to use primer or not.
Masking and Tooling
Areas adjacent to joints may be masked to ensure a neat sealant line Do not allow mask tape to touch clean surfaces to which the silicone sealant is to adhere. Tooling should be completed in one continuous stroke after sealant application. Masking tape should be removed immediately after tooling.
Equipment Cleaning
When not being used, it is recommended that the dispensing equipment be purged either with the base component or flush with suitable solvent.
