Active Member
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[China]
Address: No.16, Xinyuan Road, Hi-tech Zone, Chengdu 610041, P.R.CHINA
Contact name:nora
Chengdu Guibao Science & Technology Co., Ltd., |
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Silicone Weatherproofing Sealant for Stone Curtain Wall
FEATURES
One part, neutral cure, easy for application
Non-staining to natural stones and other porous substrates
Outstanding UV and weathering resistance
BASIC USES
GB 997 Silicone Sealant for Stone Applications is specially
formulated for
Weatherseal in stone curtain walling and cement panel precasting
Bonding and caulk seal in ceramic engineering
Sealing the joints between stone and other construction materials
such as glass and metals etc.
COLOURS
GB 997 is available in black, gray and other customized colours.
PACKAGING
GB997 is available in cartridges(net 300ml),24 pieces to a carton or in sausages (net 500ml),20 pieces to a carton
TYPICAL PROPERTIES
| Test Method | Property | Unit | Standard | Result | |
| GB/T 13477 (ISO 7390) | Slump | mm | ≤3 | 0 | |
| GB/T 13477 (ISO 8394) | Extrusion rate | ml/min. | ≥80 | 373 | |
| GB/T 13477 (ASTM D 2377) | Tack free time | h | ≤3 | 1.2 | |
| GB/T 13477 (ISO 7389) | Extension recovery | % | ≥80 | 90 | |
| GB/T 13477 (ISO 8339) | Modulus at 23℃ | MPa | ＞0.4 | 0.74 | |
| GB/T 13477 (ISO 11600) | Movement capability | % | ±20 | ±20 | |
| GB/T 13477 | Adhesion at fixed stretch | No failure | No failure | ||
| GB/T 13477 | Adhesion after heat contract and cold extension | No failure | No failure | ||
| GB/T 13477 | Adhesion at fixed stretch after water immersion | No failure | No failure | ||
| GB/T 23261 | Staining | Stain depth | mm | ≤2.0 | 0 |
| Stain width | mm | ≤2.0 | 0 | ||
| GB/T 13477 (ISO 10563) | Weight loss | % | ≤5.0 | 3.0 | |
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SPECIFICATIONS
GB 997 is designed to meet or even exceed the requirements of
Chinese national specification GB/T 23261-2009 20HM
Complies with ASTM C 1248
LIMITATIONS
GB 997 should not be applied:
As structural sealant
To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulks
In totally confined spaces as sealant requires atmospheric moisture for cure
To frost laden or damp surfaces
For continuous water immersion
When surface temperature below 4℃ or over 50℃
HOW TO USE
Surface Preparation
Clean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, surface dirt, protective coatings.
Application Method
Install back-up materials or joint fillers, setting blocks, spacer shims, and tapes. Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required for non-porous surfaces, but may be necessary for optimal seal performance of certain porous surfaces. So adhesion test is always recommended.
Apply GB 997 in a continuous operation using dispensing guns. Before a skin forms, tool the sealant with light pressure to spread the sealant against the backing materials and joint surfaces. Remove masking tape as soon as the bead is tooled.
SAFETY INFORMATION
GB 997 is a chemical product, not edible, no implantation into body and should be kept away from children.
Cured silicone rubber can be handled without any risk to health.
Should uncured silicone sealant contact with eyes, rinse thoroughly with water and seek medical treatment if irritation persists.
Avoid prolonged exposure of skin to uncured silicone sealant.
Good ventilation is necessary for work and cure places.
TECHNICAL SERVICES
Complete technical information and literature, adhesion testing, stain testing and compatibility testing are available from Guibao.
DISCLAIMER
The information presented herein is offered in good faith and is believed to be accurate. However, because conditions and methods of using our products are beyond our control, this information should not be used in substitution for customer’s tests to ensure that our products are safe, effective, and fully satisfactory for intended specific applications.
