ITW Plexus® MA8120 Methacrylate Adhesive

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ITW Plexus® MA8120 Methacrylate Adhesive
Categories:	Polymer; Adhesive; Thermoset; Methacrylate; Methacrylate Adhesive
Material Notes:	Plexus® MA8120 is an advanced direct-to-metal, low halogen two-part methacrylate structural adhesive. It is designed for the structural bonding of various metal, plastic, and composite assemblies. MA8120 does a superb job of bonding of metals without primers to other metals or engineered thermoplastics, and composite assemblies with little to no surface preparation. Combined at a 1:1 ratio by volume, MA8110/8120 can bond hot-dip and electrogalvanized zinc steel and other metals to dissimilar substrates. This product provides a unique combination of high strength, toughness, and fatigue endurance, for industrial and transportation assembly with superior thin film cure. Excellent resistance to: ? Acids and Bases (pH 3-10) ? Salt Solutions. Susceptible to: ? Polar Solvents ? Strong Acids and Bases. Adhesive color; off white (uncured-room temperature). Activator color: gray (uncured-room temperature) Information provided by ITW Performance Polymers.
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Physical Properties	Original Value	Comments

Density	7.96 lb/gal	Activator. Uncured.
	8.07 lb/gal	Cured
	8.10 lb/gal	adhesive. Uncured.
Volatile Organic Compounds (VOC) Content	<= 10 g/l	During cure
Viscosity	40000 - 70000 cP @Temperature 22.2 °C	Activator
	40000 - 70000 cP @Temperature 22.2 °C	Adhesive

Mechanical Properties	Original Value	Comments
Tensile Strength	2500 - 3000 psi	ASTM D638
Elongation at Break	>= 40 %	ASTM D638
Tensile Modulus	80000 - 110000 psi	ASTM D638
Adhesive Bond Strength	1800 - 2400 psi	Lap Shear Cohesive Strength; ASTM D1002

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	180 °F
Minimum Service Temperature, Air	-40.0 °F
Flash Point	51.0 °F

Processing Properties	Original Value	Comments
Working Life	18.0 - 22.0 min @Temperature 23.3 °C
Shelf Life	7.00 Month	Activator (B side)
	7.00 Month	Adhesive (A side)
	7.00 Month	Cartridges

Descriptive Properties
Fixture Time (mins)	75 to 90	74°F cure. Varies with bond gap and temperature.
Gap Filling (in)	0.03 to 0.05	Room temperature cure.
Mix Ratio by volume	1 to 1	Adhesive to Activator. Room temperature
Mix Ratio by weight	1.01 to 1.0	Adhesive to Activator. Room temperature

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PITWP9014 / 239524

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