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

Details

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 weigh
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