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  • IOTA 1092 High Performance Silicone Structural Glazing Sealant

    IOTA 1092 High Performance Silicone Structural Glazing Sealant

    1. High performance ;    

    2. Structural sealing and glazing for the curtain wall of skyscrapers and high-rise buildings

     

    Features:

    1.Two parts , neutral cure to form an extremely tough elastomeric rubber . 

    2.High level mechanical properties , high tensile strength and extension rate

    3.Excellent weatherability and high resistance to ultra-violet radiation ,heat and humidity, and ozone

    4.Excellent stability through wide temperature range from –50 ℃ to +150 ℃

    5.Excellent unprimed adhesion to wide range of substrates

    6.Good compatibility with other neutral silicone sealants

     

    COLOURS

    Part A(base) of IOTA1092 is available in white, part B(curing agent) in black. Black color after mixed.

     

    PACKAGING

    IOTA 1092 is available in kit:Part A in 200Ldrums (net 190L), part B in 20L pails (net 18.5L).

     

    SPECIFICATIONS

    IOTA 1092 is designed to meet or even exceed the requirements of Chinese national specification GB16776-2005 Silicone Sealant for Structural Glazing Chinese corporate specification Q/71304249-7.015-2009 Complies with ASTM C 1184

     

    Typical properties: 

    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 (ASTM D 2377)

    Tack free time

    h

    ≤3

    0.8

    GB/T 13477

    Working time (after 20 min.)

    s

    ≤10

    2.0

    GB/T 531.1 (ISO 7619)

    53113477

    Hardness

    Shore A

    3060

    40

    GB 16776 (ASTM C 792)

    Heat Aging

     

     

     

    weight loss

    %

    ≤10

    3.3

    cracking

     

    Nil

    Nil

    chalking

     

    Nil

    Nil

    GB/T 13477 (ISO 8339)

    Tensile strength 

    MPa

     

     

    23

     

    ≥1.20

    1.43

    90

     

    ≥ 0.9

    1.17

    -30

     

    ≥ 0.9

    1.75

    water immersion

     

    ≥ 0.9

    1.75

    water-UV exposure

     

    ≥ 0.9

    1.22

    adhesion failure

    %

    ≤ 5.0

    0

    extension rate at ultimate tensile strength at 23

    %

    ≥ 150

    210

     *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

    IOTA1092 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 1092 should not be applied:

    To the materials that bleed oils , plasticizers or solvents, such as impregnated wood, oil-based caulks.

    To frost laden or damp surfaces .

    For continuous water immersion.

    When surface temperature below 4℃ or over 50℃

     

    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 IOTA 1092, it is recommended that base and curing agent thoroughly mixed using an airless two-part silicone dispensing machine.

     

    IOTA 1092 should be mixed at a ratio of 9:1~11:1 base to curing agent by volume, or 11:1~13:1base to curing agent by weight.

    Lot matching of IOTA 1092 base to curing agent is not required. Before use, it is recommended that curing agent be fully stirred to ensure the homogeneity of all components.

     

    IOTA 1092 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 IOTA 1092. 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.



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