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  • IOTA 997 Silicone Sealant For Stone Applications

    IOTA 997 Silicone Sealant For Stone Applications


    Not staining to porous materials, special for stone curtain wall

    Features

    1. One part, neutral cure, odorless and easy for application

    2.  Non-staining on natural stones and other porous substrates

    3.  Outstanding UV and weathering resistance

    COLOURS

    IOTA 997 is available in black, gray and other customized colours. 

    PACKAGING

    IOTA 997 is available in cartridges (net 300ml) or in sausages (net 500ml).

    SPECIFICATIONS

    IOTA 997 is designed to meet or even exceed the requirements of Chinese national specification GB/T 23261-2009 20HM Complies with ASTM C 1248

    Typical properties

    Method

    Test Item

    Unit

    Standard

    Result

    GB/T 13477 (ISO 7390)

    Slump

    Mm

    ≤3

    ≤3

    0

    0

    GB/T 13477 (ISO 8394)

    Extrusion rate

    ml/min.

    ≥80

    373

    192

    GB/T 13477 (ASTM D 2377)

    Tack free time

    h

    ≤3

    1.2

    1.3

    GB/T 13477 (ISO 7389)

    Extension recovery

    %

    ≥80

    96

    92

    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

    Extension/compression rate

    %

    ±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

    GB: Chinese National Standard   

    ASTM: American Society for Testing and Materials 

    ISO: International Standardization Organization

    The “GB” testing method is equivalent or partly equivalent to that in the “()”

     

    STORAGE AND SHELF LIFE

    IOTA 997 should be stored at or below 27℃ in original unopened containers. It has a shelf life of 12 months from the date of manufacture.

     

    LIMITATIONS

    IOTA 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 IOTA 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



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