ITW Devcon® DFense Blok™ Fast Cure (FC) Wear-Resistant Epoxy Compound

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ITW Devcon® DFense Blok™ Fast Cure (FC) Wear-Resistant Epoxy Compound
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Alumina ceramic bead-filled epoxy system with outstanding wear and abrasion resistance for severe service conditions. Fast cure allows for repaired processing equipment to be returned to service in as little as 2 hours. Uses: Repair scrubbers, ash handling systems, pipe elbows, screens, chutes, chippers, bins, hoppers, bunkers, separators and digester tables. Protect exhausters, launderers, housing fans, crushers, breakers, and conveyor screws. Features: Fast cure for minimal downtime, Superior wear and abrasion resistance, Able to withstand impact, Resistant to a wide range of chemicals, Non-sagging. Information provided by ITW Performance Polymers.
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Physical Properties	Original Value	Comments

Specific Gravity	2.05 g/cc	Cured
Solids Content	100 %	Uncured

Mechanical Properties	Original Value	Comments
Hardness, Shore D	80
Flexural Strength	7488 psi	ASTM D790
Compressive Strength	7178 psi	ASTM D695
Adhesive Bond Strength	2764 psi	Adhesive Tensile Shear; ASTM D1002

Electrical Properties	Original Value	Comments
Dielectric Constant	45	ASTM D150

Thermal Properties	Original Value	Comments
CTE, linear	33.0 µin/in-°F	ASTM D696
Maximum Service Temperature, Air	140 °F	Temperature Resistance - Wet
	300 °F	Temperature Resistance - Dry
Shrinkage	0.080 %	Linear During cure; ASTM D2566

Processing Properties	Original Value	Comments
Cure Time	2.00 - 3.00 hour @Temperature 24.0 °C
	10.0 hour @Temperature 24.0 °C
	168 hour @Temperature 24.0 °C	As Tested
Pot Life	15.0 min @Temperature 23.9 °C

Descriptive Properties
Chemical/Solvent Resistance	1,1,1-Trichloroethane: very good	30 day immersion at 75°F. Sample cured 7 days at RT
	Ammonia: excellent	30 day immersion at 75°F. Sample cured 7 days at RT
	Gasoline (Unleaded): fair	30 day immersion at 75°F. Sample cured 7 days at RT
	Hydrochloric Acid 10%: very good	30 day immersion at 75°F. Sample cured 7 days at RT
	Methanol: poor	30 day immersion at 75°F. Sample cured 7 days at RT
	Methyl Ethyl Ketone: poor	30 day immersion at 75°F. Sample cured 7 days at RT
	Sodium Hydroxide 50%: excellent	30 day immersion at 75°F. Sample cured 7 days at RT
	Sulfuric Acid 10%: very good	30 day immersion at 75°F. Sample cured 7 days at RT
	Trisodium Phosphate: very good	30 day immersion at 75°F. Sample cured 7 days at RT
Color	Gray	Cured
Coverage	53 sq. in/lb	Uncured at 1/4"
Mix Ratio by volume	2:1
Mix Ratio by weight	2:1
Recoat Time	1 to 1.5 hrs
Specific Volume (in.³/lb)	13.5	Cured
Viscosity	Non-sag putty Mixed

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PITWD9173 / 239683

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