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  • IOTA 886 Silicone Structural Insulating Glass Sealant

    IOTA 886 Silicone Structural Insulating Glass Sealant

    Special for the secondary seal of structural insulating glass units used for curtain wall

     

    PRODUCT FEATURES

    1.Two part, neutral fast cure rate, suitable for factory application  

    2. High level of tensile strength and mechanical properties

    3. Excellent adhesion to a wide range of substrates including coated glass, low -E glass, tempered glass, laminated glass, aluminium and steel spacers etc.

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

    5. Excellent resistance to temperature extremes, unaffected performance from –50 ℃ to +150 ℃

    6. Excellent unprimed adhesion to wide range of substrates

    7. Good compatibility with other neutral silicone sealants

     

    COLOURS 

    Part A (base) of IOTA 886 is available in white, part B(curing agent) in black, black color after mixture. 

     

    PACKAGING

    IOTA 886 is available in kit: part A base in 200Ldrums (net 190L), part B is available in 20L pails (net 18.5L) 

     

    SPECIFICATIONS

    IOTA 886 is designed to meet or even exceed the specification of Chinese national standard GB24266-2009.

     

    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 (ISO 9048)

    Extrusion rate

    s

    ≤10

    1.9

    GB/T 13477 (ASTM D2377)

    Tack free time

    h

    ≤3

    1.3

    GB/T 13477 (ISO 8339)

    Modulus at 10% extension

    MPa

    ≥0.15

    0.22

    GB/T 531 (ISO 7619 )

     

    Hardness

    Shore A

    3060

    43

    GB/T 13477

    Adhesion at 25% extension

     

    No

    failure

    No failure

    GB/T 13477 (ISO 8339)

    Tensile strength at

    MPa

     

     

     

     

    23

     

    ≥0.60

    1.13

     

    90

     

    ≥0.45

    0.87

     

    -30

     

    ≥0.45

    1.58

     

    water immersion

     

    ≥0.45

    1.03

     

    water-UV exposure

     

    ≥0.45

    0.98

    GB 16776 (ASTM C 792)

    Heat aging

     

     

     

     

    weight loss

    %

    ≤6.00

    3.4

     

    chalking

     

    Nil

    Nil

     

    chalking

     

    Nil

    Nil

     

    STORAGE AND SHELF LIFE

    IOTA 886 should be stored at or below 27℃ in original unopened containers. It has a shelf life of months from the date of manufacture.

     

    LIMITATIONS

    IOTA 886 should not be applied:

    For structural glazing of glass units onto a metal frame.

    IOTA 992 two part structural silicone and IOTA 999 one part structural silicone are recommended for that application

    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℃

     

    HOW TO USE

    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

    Lot matching of IOTA 886 base to curing agent is not required. Before use, it is recommended that curing agent be stirred to ensure the homogeneity of all components.

    IOTA 886 part B curing agent will react with atmospheric moisture, therefore should not be exposed to air for prolonged period of time.

    To obtain the optimal performance of IOTA 886, it is recommended that base and curing agent thoroughly mixed using a two-part silicone dispensing machine.

    IOTA 886 should be mixed at a ratio of 9:1~11:1 base to curing agent by volume, or 11:1~13:1 base to curing agent by weight.



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