 Silicone Sealant for Construction
Characteristics
- One-part, easy to use, good extrudability and pheopexy over the temperature range from 4 +40,direct application to construction with sealant gun.
- Neutral cure, non-corrosive to metal, coated glass, concrete and other building materials.
- Strong movement capability, its seal performance will not be affected by allowed extension or contraction, or shear deformation of curtain walls.
- Outstanding weatherability, aging, ultraviolet rays, ozone, and water resistance.
- Excellent extreme temperature resistance, neither harden, crack or become fragile even under the temperature of 50, nor degrade, or become soft under the temperature of +200, always good elasticity.
- Excellent unprimed adhesion to most building materials.
- Excellent compatibility with other neutral silicone sealants.
Basic Uses
- Weather seal of various glass curtain walls.
- Weather seal of various metal and aluminum curtain walls.
- Joint seal in concrete, plastic and metal constructions.
- A variety of other uses.
Colors
Guibao998 is available in black, gray, and other custom-made colors.
Packaging
Guibao 998 is supplied in 350ml plastic cartridge (net 300ml) or in 600ml foil sausages (net 590ml)
Applicable Standards
Guibao 998 meets or exceeds the following standards:
The United States ASTM C 920-98
China JC/T 882-2001
Typical Technical Properties
|
Property
|
Standard
|
Tested value
|
Testing Method
|
|
25HM
|
25LM
|
|
Droop
Degree (mm)
|
Vertical
|
≤3
|
0
|
0
|
GB/T 13477
|
|
Horizontal
|
No droop
|
No droop
|
No droop
|
|
Tack-free Time (h)
|
≤3
|
0.3
|
0.9
|
GB/T 13477
|
|
Extrudability(ml/min)
|
≥80
|
113
|
192
|
GB/T 13477
|
|
Elasticity recovery,%
|
≥80
|
94
|
92
|
|
|
Tensile Strength
Mpa
|
23
|
HM
|
LM
|
0.6
|
0.4
|
GB/T 13477
|
|
-20
|
0.4
or0.6
|
≤0.4
|
|
≤0.6
|
|
0.4
|
GB/T 13477
|
|
Adhesion at fixed extension
|
No failure
|
No failure
|
No failure
|
GB/T 13477
|
|
Adhesion as hot pressed and cold stretched
|
No failure
|
No failure
|
No failure
|
GB/T 13477
|
|
Adhesion as soaked in water and exposed to light
|
No failure
|
No failure
|
No failure
|
GB/T 13477
|
|
Mass loss,%
|
≤10
|
3
|
4.1
|
GB 16776
|
|
Fire retardant
|
|
none
|
|
GB/T 2408
|
| |
|
|
|
|
|
|
|
Storage and Shelf Life
Guibao 998 should be stored in cool and dry places over the temperature range from 0to 27, under which the shelf life is nine months from the date of manufacture as indicated on product packaging.
Curing Time
As exposed to air, Guibao998 begins to cure in a surface-to-interior sequence. Its tack-free time is about 1.5 hours, the final cure and the optimum adhesion occurs 21 days later.
Application Limitations
Guibao998 should not be applied
- As structural sealant.
- To the materials that will bleed oil, plasticizer or solvent such as the pregnated wood.
- To the places without ventilation, as Guibao998 requires atmospheric moisture to cure.
- To damp or frost-laden surfaces.
- To places damp all the year round or continuously immersed in water.
- When surface temperature is below 4 or over 40 ,application is not recommended.
- To the surface of copper, lead, zinc-coated metal.
Safe-Handling Information
Completely cured Guibao 998 is not toxic, but avoid contacting eyes before cure If that happens, rinse with a lot of water and seek medical treatment. Uncured Guibao 998 Weather Proof Sealant should be kept away from children. The product will give off low-molecule substance, so construction area and cure area should be kept ventilated to avoid the unfavorable effect on human health caused by the over-concentration of low-molecule substance.
Technical Services
Complete technical information and literature, adhesion testing, compatibility testing and are available from Guibao.
Disclaimer
Guibao believes that the information is an accurate description of the typical characteristics and/or uses of the product or products. It is customers responsibility to thoroughly study and test the product in the specific application to determine its performance, efficacy and safety. |
Guibao 998 Silicone Weather-proof Sealant
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