Non-sag 2-part Silicone Sealant

Non-Sag 2-Part Silicone Sealant

Product Category : Silicone Sealants

Supplier : Mccoy Silicones Limited

Product Details

Product Profile of Non-sag 2-part Silicone Sealant

McCoy Silicones Limited, an ISO 9001:2000 Certified Company is the manufacturer of Non-sag 2-part Silicone Sealant, Sikasil IG-25. The Non-sag 2-part Silicone Sealant is a neutral, condensation-curing, elastic silicone sealant with high mechanical strength and outstanding adhesion to many substrates. The Non-sag 2-part Silicone Sealant is a professional silicone sealant which is specially designed for sealing, bonding and mending in construction applications. This silicone sealant is particularly suitable for the manufacture of multilane insulating glass. The Non-sag 2-part Silicone Sealant is used in structural glazing façades with high mechanical strength and excellent adhesion to many construction materials such as glass and metal. The two parts component A [base compound] and component B [catalyst paste] must be mixed, and cure at room temperature to form an elastomer. The features of the Non-sag 2-part Silicone Sealant are as follows: Neutral curing system: odorless External quality control Long shelf-life: simplified stock keeping Solvent less Non-sag Ready gunnability at low [+5°C] and high [+40°C] temperatures Very low shrinkage on curing After cure: elastic at low [-40°C] and high [+150°C] temperatures Excellent UV and weathering resistance Highly load-resistant Abrasion resistant Not corrosive to metals and many plastics Compatible with PVB layer of safety glasses Free of abrasive fillers Excellent adhesion on most float, tinted and coated glasses and to plastic and metal spacers Excellent resistance to water and the effects of moisture The Non-sag 2-part Silicone Sealant is available in black. The other two components of the Non-sag 2-part Silicone Sealant available in following color:

Color Component A: creamy white

Color Component B: black

The Non-sag 2-part Silicone Sealant is available in following packages

Component A: 200 l drum: 260 kg, 187.1 litres

Component B: IG-25 Standard and IG-25 FC: 20 l pail: 20 kg, 18.5 litres

IG-25 OC: 30 l pail: 26 kg, 24.1 litres

The technical specifications of the Non-sag 2-part Silicone Sealant are:

Movement Capability

Cured rubber [after 2 weeks +23°C / 50% r.H.] + 12.5% [ISO 9047] 25% [ASTM C920]

Density

Unmixed Components IG-25 Standard A [base compound]and B [catalyst paste] 1.39 kg/l [Comp. A] [ISO 1183-B] 1.08 kg/l [Comp. B] Uncured compound [IG-25 Standard]: mixture of base compound and catalyst paste in weight ratio 13: 1 or volume ratio 10: 1 1.37 kg/l [ISO 1183-B]

Extrusion Rate

Uncured compound IG-25 Standard: mixture of base compound and catalyst paste in weight ratio 13: 1 or volume ratio 10: 1 8 ml/10 s at +23°C [3 mm nozzle, p = 0.21 N/mm2] 10 minutes after mixing

Viscosity Unmixed components IG-25 Standard A [base compound] and B [catalyst paste]

1`100`000 mPas [Comp. A] [+23°C / D = 0.85 s-1] 150`000 mPas [Comp. B] [+23°C / D = 0.85 s-1]

Tack-free Time

Uncured compound: mixture of base compound and catalyst paste in weight ratio 13: 1 [IG-25 Standard and IG-25 FC] and 10: 1 [for IG-25 OC] or volume ratio 10: 1 [IG-25 Standard and IG-25 FC] and 7.5: 1 [IG-25OC] 120 - 180 minutes

Sag Flow

Service Temperature

Cured rubber -40°C to +150°C after 2 weeks [+23°C / 50% r.H.]

Water Vapor Diffusion Coefficient

Cured rubber [after 2 weeks +23°C / 50% r.H.] 15 g /m-2 d-1 [2.2 mm film] [DIN 53122-A] The Non-sag 2-part Silicone Sealant has the following mechanical Data

Shore A Hardness

Cured rubber [after 2 weeks +23°C / 50% r.H.] 42 [ISO 868] Uncured compound IG-25 Standard: mixture in weight ratio 13 : 1 or volume ratio10 : 1 Shore A Hardness

Tear Strength

Cured rubber [after 2 weeks +23°C / 50% r.H.] 6.0 N/mm [ISO 34-C]

E-Modulus

Cured rubber [after 2 weeks +23°C / 50% r.H.] N/mm2 at 100% elongation [ISO 37, rod S2] 0.90 N/mm2 at 100% elongation [ISO 8339-A] 0.50 N/mm2 at 25% elongation [ISO 8339-A]