ITW Plexus® A0420/MA420 Methacrylate Adhesive

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ITW Plexus® A0420/MA420 Methacrylate Adhesive
Categories:	Polymer; Adhesive; Thermoset; Methacrylate; Methacrylate Adhesive
Material Notes:	Plexus® AO420 is a two-part methacrylate adhesive designed for structural bonding of thermoplastic, metal, and composite assemblies. Combined at a 10:1 ratio, AO420 is a rapid-curing system. Plexus AO420 is the standard choice for composite bonding applications in the transportation industry because it requires virtually no surface preparation. In addition, this product provides a unique combination of excellent fatigue endurance, outstanding impact resistance, and superior toughness. Plexus AO420 is available in amber, blue, or black colors and is supplied ready-to-use to be dispensed as a non-sagging gel. Excellent chemical resistance to : hydrocarbons, acids and bases (pH 3-10), salt solutions. Susceptible to: polar solvents, strong acids and bases. Recommended for: ? ABS? Acrylics? FRP? Gel coats? Steel (Exterior applications require the use of coatings or primers that inhibit oxidation of the steel.) ? PVC? Polyesters (including DCPD modified)? Aluminum*? Steel, Stainless? Styrenics? Urethanes (general)? Vinyl Esters Color: off white/amber (adhesive), off white, blue, and black (activator). Information provided by ITW Performance Polymers.
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Physical Properties	Original Value	Comments

Density	8.10 lb/gal	adhesive. Uncured.
	8.20 lb/gal	Cured
	8.80 lb/gal	Activator. Uncured.
Volatile Organic Compounds (VOC) Content	<= 20 g/l	During cure
Viscosity	35000 - 80000 cP @Temperature 22.2 °C	Activator
	100000 - 125000 cP @Temperature 22.2 °C	Adhesive.

Mechanical Properties	Original Value	Comments
Tensile Strength	2700 - 3000 psi	ASTM D638
Elongation at Break	30 - 50 %	ASTM D638
Tensile Modulus	75000 - 100000 psi	ASTM D638
Adhesive Bond Strength	3000 - 3800 psi	Lap Shear Cohesive Strength; ASTM D1002

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	250 °F
Minimum Service Temperature, Air	-67.0 °F
Flash Point	51.0 °F

Processing Properties	Original Value	Comments
Working Life	4.00 - 6.00 min @Temperature 23.3 °C
Shelf Life	7.00 Month	B Side Back
	7.00 Month	Black in Cartridges
	10.0 Month	Standard Colors in cartridges
	10.0 Month	Activator (B side)
	13.0 Month	Adhesive (A side)

Descriptive Properties
Fixture Time (mins)	18 to 22	74°F cure. Varies with bond gap and temperature.
Gap Filling (in)	0.03 to 0.375	Room temperature cure.
Mix Ratio by volume	10 to 1	Adhesive to Activator. Room temperature
Mix Ratio by weight	9.1 to 1.0	Adhesive to Activator. Room temperature

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PITWP9001 / 239511

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