IOTA 999 silicone structural sealant

IOTA 999 silicone structural sealant

Details

IOTA 999 silicone structural sealant

 

FEATURES

1. One part, neutral cure to form an extremely tough elastomeric rubber ensuring a durable, flexible, and watertight bond 

2. Non-corrosive

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

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

 

COLOURS:

IOTA 999 is available in black, gray, and white. 

 

PACKAGING:

IOTA 999 is available in disposable cartridges (net 300ml) and sausages (net 590ml)

 

SPECIFICATIONS

IOTA 999 is designed to meet or even exceed the requirements of Chinese national specification GB16776-2005 Silicone Sealant for Structural Glazing 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 (ISO 8394)

Extrusion rate

s

≤10

1.6

GB/T 13477 (ASTM D 2377)

Tack free time

h

≤3

1.0

GB/T 531.1 (ISO 7619)

53113477

Hardness

Shore A

2060

49

GB 16776 (ASTM C 792)

Heat Aging

 

 

 

weight loss

%

≤10

3.6

cracking

 

Nil

Nil

chalking

 

Nil

Nil

GB/T 13477 (ISO 8339)

Tensile strength

MPa

 

 

 

23

 

≥0.60

1.08

90

 

≥0. 45

0.90

-30

 

≥0. 45

1.66

water immersion

 

≥0. 45

1.12

water-UV exposure

 

≥0. 45

1.03

adhesion failure

%

≤5.00

0

extension rate at ultimate tensile strength at 23

%

≥100

220

 

STORAGE AND SHELF LIFE

IOTA 999 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 999 should not be applied:

 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 substrate 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.

 

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 999 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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