SM20 Methacrylate Structural Adhesive
SM20A: 1 kg Bucket
SM20B: 1 kg Bucket
SM20 is a 1 to 1 meter – mix methacrylate based structural adhesive formulated to bond almost all engineered thermoplastics, thermosets, composites and metal structural elements together, in any combination. It has excellent adhesion to as – received metal surfaces including aluminium, stainless steel and plated steels and forms tough, high strength bonds without surface preparation, primers, or chemical wipes.
It features a medium cure time for assembly flexibility to allow for positioning and multiple operations, but provides for faster fixture. SM20 has outstanding durability and environmental resistance to many common industrial solvents, fuels, lubricants and environmental conditions.
This product is formulated as non – sag, and is easy to dispense through static mixer tubes and cartridges. It is also easy to accurately weigh the two parts, in a 1 to 1 ratio, and mixed with a spatula.
We recommend abrading metal surfaces.
Process and Performance Benefits
UNCURED PROPERTIES
Part A Part B
Viscosity (cps) 50000 50000
Density (g/cc) 0,965 0,965
Colour Off White Amber
Mix ratio (weight & volume) 1 to 1
CURING PROPERTIES
Mixed Viscosity (cps) 90000
Mixed Density 0,97 g/ cc
Working Time 10 to 18 minutes
Fixture Time 30 – 35 minutes
Full Cure Time 24 Hours
CURED PROPERTIES
Colour Amber
Hardness 78 D
Elongation 10 to 18% estimated
Operating Temperature – 40 C to 120 C
Coverage 1 kg covers 0,21 m2 @ 0,25 mm thickness
CURED ADHESIVE PROPERTIES
Tensile Strength : 26,5 Mpa
Gap filling : 10 mm
Impact Resistance: 960 J/ m
SUBSTRATE SHEAR STRENGTH
Polyester GRP / GRP Substrate Failure
ABS / ABS Substrate Failure
S. Steel / S. Steel 22 Mpa
Aluminium / Aluminium 22 Mpa
Aluminium / ABS Substrate Failure
Gel Coat / Gel Coat Substrate Failure
Polyester GRP / Gel Coat Substrate Failure
CLEAVAGE PEEL STRENGTH (ASTM D 3807)
S. Steel / S. Steel 20 PLI
Chemical Resistance ASTM D 1002 (cured for 7 days @ 25 C)
Immersion 30 days (Aluminium / Aluminium)
Petrol 22 Mpa
Xylene 22 Mpa
Water @ 23 C 22 Mpa
Water @ 90 C 21 Mpa
SHELF LIFE: Refer to expiry date at 25C. Do not freeze.
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