JOINLEADER 990 Structural Silicone Sealant is a one-part high quality, neutral and room-temperature cured Silicone Structural Sealant.
JOINLEADER 990 Structural Silicone Sealant has excellent adhesion without applying primer painting to many architecture materials such as glass, coated glass, anode aluminum material, granite and coated mental material
JOINLEADER 990 Structural Silicone Sealant has high ultimate tensile strength sealant ideally suited for structural bonding and protective glazing applications
One component, odorless, neutral and non-corrosive cure at room temperature.
Excellent resistance to weather, over 50 years’ duration
Excellent resistance to low and high temperature, performance changes little between -50°C~200°C
Excellent mechanical properties
Very good adhesion and compatibility, especially to metals (non-corrosive) and various paint systems.
Compatible to most membrane-plated glass or hollow glass.
Meets global standards for structural glazing (American, China, Europe)
BEFORE CURED: 23°C±2°C, RH50%±5%
Aspect Thixotropic Paste
Gravity, g/ cm3 1.30~1.45
Skinning Time,min: 25-60
Application Temperature, °C +5°C to +40
AFTER CURED: 23°C±2°C, RH50%±5% 21days
Service Temperature: -50°C to +250°C
Tack-free time, h
Mass loss by heat, %
Joint Movement Capability,%
Tear Strength, die B,ppi
Tensile at 25% Elongation,MPa
Tensile at 50% Elongation,MPa
Elongation at break,%
JOIN LEADER 990 Structural Silicone Sealant can be used for structural glazing and sealing for glass, stone, aluminum panel curtain wall, and secondary seal of insulating glass, filling and sealing for complex edge.
JOIN LEADER 990 Structural Silicone Sealantis suitable as a secondary edge sealant for the manufacture of multipane insulating glass used in structural glazing façades.
JOIN LEADER 990 Structural Silicone Sealant is also used for sealing and bonding in building construction and technical/industrial applications.
DESIGN FOR STRUCTURAL ASSEMBLY JOINTS
The design of silicone structural joints is prepared according to the general rules in construction area by designing experts. The basic designing rule of typical silicone structural joints includes:
The width of structural glue shall not be less than 6mm.
The depth of structural glue shall not be less than 6mm.
The width of structural glue shall be equal to or larger than its depth..
Structural joint must be filled fully with glue in normal way.
Structural joint cannot be moved during its solidification period.
The design in joint must assure that air can touch structural glue so that the glue will solidify. When silicone structural sealant is used to support permanent load, the designed load intensity is 6.9 KPa.
Note: Designing rule may be different for other specialized system. The suitable rule of this kind of system will change according to its particular design.
12 months in unopened packaging in a cool and dry storage place at temperatures between +5°C and 27°C.
Also we can produce weatherproofing sealant with special color upon customers' requirement.