Permabond TA437 Toughened Acrylic Adhesive

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Permabond TA437 Toughened Acrylic Adhesive
Categories:	Polymer; Adhesive; Thermoset; Acrylic/Cyanoacrylate Adhesive
Material Notes:	PERMABOND TA437 is a single component structural acrylic adhesive designed primarily for bonding metals, ferrites and ceramics. The typical fixture time of TA437 when used with Initiator 41 is 30 – 45 seconds. The fast fixture time of TA437 makes it an ideal adhesive for high speed production lines. When the use of the activator is not desirable, the material can be used by itself but the fixture time will be 3-5 minutes. This product provides high strength, tough, durable bonds with good impact resistance. Features & Benefits: Adhesion to a wide variety of substrates Fast cure at room temperature No mix application High shear and peel strength Good impact strength High temperature resistance Information provided by Permabond.
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Physical Properties	Original Value	Comments

Density	1.10 g/cc	uncured
Viscosity	115000 - 125000 cP @Temperature 25.0 °C	Uncured
Storage Temperature	5.00 - 25.0 °C

Mechanical Properties	Original Value	Comments
Tensile Strength	30.0 MPa	DIN 53288
Adhesive Bond Strength	4.00 MPa	Steel to Ferrite using Initiator 41 after 3 minutes, Shear
	>= 14.0 MPa	Substrate Failure, Steel to Ferrite using Initiator 41 after 24 hours, Shear
	14.0 - 20.0 MPa	Mild steel, Shear
Impact	10 - 20	kJ/m² Adhesive Impact Strength; ASTM D950
Peel Strength	3.40 - 4.00 kN/m	ISO 4578

Electrical Properties	Original Value	Comments
Volume Resistivity	2.00e+13 ohm-cm	ASTM D257
Dielectric Constant	4.6 @Frequency 1e+7 Hz	ASTM D150
Dielectric Strength	30.0 - 50.0 kV/mm	ASTM D149

Thermal Properties	Original Value	Comments
CTE, linear	80.0 µm/m-°C	ASTM D696
Thermal Conductivity	0.100 W/m-K	ASTM C177

Processing Properties	Original Value	Comments
Cure Time	0.500 - 1.00 hour	working strength
	24.0 hour	full cure
	30.0 - 45.0 sec	handling time with initiator 41
	180 - 300 sec	handling time with no initiator
Shelf Life	12.0 Month

Descriptive Properties
Appearance	Orange viscous liquid	Uncured
Maximum Gap Fill (mm)	0.5
Strength Retention	100% at 0°C	Relative to 0°C
	15% at 250°C	Relative to 0°C
	35% at 200°C	Relative to 0°C
	65% at 150°C	Relative to 0°C
	85% at 100°C	Relative to 0°C
	95% at 50°C	Relative to 0°C

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PPERMA912 / 162778

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