Sealant IOTA SLT 3E

Description：

IOTA SLT 3E is a one-component silicone sealant, acidic curing, which when exposed to atmospheric humidity, forms a flexible and durable elastomeric seal which possesses good resistance to severe weathering conditions.

Examples of applications：

IOTA SLT 3E is a general purpose silicone sealant which offers good performance on many different applications where weather tightness is required:

Caulking doors and windows; 
Shop windows, display cases, panels and signs;

Plumbing, drains, guttering;

HVAC ducting;

Sealing of electrical conduit;

Boat maintenance;

DIY general purpose sealing. 

Advantages:

IOTA SLT 3E bonds strongly to clean uncoated glass, ceramics and glazed or painted surfaces without the need to prime.

The rheological properties of IOTA SLT 3E allow high rates of extrusion whilst the thixotropy enables the sealant to be used on vertical jointing and underside applications

IOTA SLT 3E presents good stability to temperature variations (-30°C to+ 120°C), UV rays, rain, snow...

Characteristics:

1,Before curing

Type of sealant .......................................................................................................... acetic

Specific gravity, g/cm3,approx .................................................................................... 0.97

Flow resistance, mm, approx ............................................................................................. 0

Extrusion ,g/min, approx. ................................................................................................. 215

2,Curing

Surface formation time*, min. approx. .............................................................................. 9

Tack-free time*. min. approx .......................................................................................... 20

Curing rate*, mm / 1 day, approx ...................................................................................... 3

mm / 3 day, approx ................................................................................... 6.5

mm / 7 day, approx ...................................................................................... 9

Application temperature℃ .................................................................................. +5 to +40

3, After curing

Shore A hardness, approx ................................................................................................. 20

Elastic recovery, %, approx .............................................................................................. 95

Joint movement capability, %, approx ........................................................................... 20

Operating temperature, °C ................................................................................ -30 to +120

Mechanical properties on a 2 mm thick film after 3 days curing*

Modulus at 100% elongation, MPa, approx ................................................................... 0.5

Tensile strength, MPa, approx ......................................................................................... 1.8

Elongation at break, % approx ....................................................................................... 450

Mechanical properties on slabs *

Modulus at 60% elongation, MPa, approx ..................................................................... 0.4

Tensile strength, MPa, approx ......................................................................................... 0.7

Elongation at break, %, approx ..................................................................................... 150

* at a temperature of 23°C and relative humidity of 50%

Processing:

Joint dimensions :

The movement capability of sealants as well as local regulations must be considered. Joint width should be twice the depth.

Joint preparation:

The joint faces to be bonded must be clean, dry and free from dust, oil, grease, old sealant and any traces of contaminant which may affect adhesion. Surfaces should be degreased with solvent soaked cloth and then wiped with a clean cloth. To remove dust, use oil-free compressed air.

Priming:

For almost substrates, IOTA SLT 3E need not primers. Whether use primer or not when applied on special substrates, prior test is recommended.

Sealant application:

For good performance it is essential that the sealant is only bonded to the two facing sides of the joint. To achieve this install a backup material (closed cell polyethylene or open cell polyurethane foam). Apply the sealant in a continuous operation making sure all air pockets or voids are eliminated. Tool the sealant with light pressure to spread the material against the joint surfaces.

This operation should be made with a dry spatula before skin formation occurs.

Excess uncured sealant should be wiped and cleaned with a commercial solvent, cured sealant can only be removed by scraping (i.e. with a razor blade), or with a special silicone remover product.

Limits of use:

IOTA SLT 3E must not be used on sensitive surfaces which could react with the acetic acid which is released during cure, nor should it be used on materials where migration of constituents can take place, e.g. certain rubbers.

Avoid the use of IOTA SLT 3E where there is possibilities of food contact.

IOTA SLT 3E is not recommended where abrasion or physical abuse will be

encountered. For all uses in permanent immersion, please consult us.

Colors: Translucent, White. For other colors, please consult us.

Packaging:

IOTA SLT 3E is available in 195 kg drums and 820 kg big bags.

Storage and shelf-life:

IOTA SLT 3E has a shelf life of 24 months, IOTA SLT 3E has a shelf life of 18 months, guaranteed by IOTA from its date of manufacture, when stored at a temperature between –5°C to +50°C in its original unopened packaging. After opening the product must be used quickly.