ITW Devcon® DFense Blok™ Quick Patch Wear-Resistant Epoxy Compound

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ITW Devcon® DFense Blok™ Quick Patch Wear-Resistant Epoxy Compound
Categories:	Polymer; Thermoset; Epoxy
Material Notes:	Alumina ceramic bead-filled epoxy system with a very fast cure speed, allowing for emergency patching of processing equipment. Provides wear and abrasion resistance for extended service life. Uses: Patch holes, leaks and cracks in all types of processing equipment such as: scrubbers, ash handling systems, pipe elbows, screens, chutes, recontour chippers, bins, hoppers, bunkers, separators, digester tables, exhausters, launderers, housing fans, crushers and breakers. Features: Eliminates downtime, Exceptionally fast cure for emergency patching, Applies to vertical and overhead surfaces, Easy to mix, Ceramic beads for wear resistance. Information provided by ITW Performance Polymers.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.86 g/cc	1.86 g/cc	Cured
Solids Content	100 %	100 %	Uncured

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	84	84
Flexural Strength	33.6 MPa	4880 psi	ASTM D790
Compressive Strength	42.51 MPa	6166 psi	ASTM D695
Adhesive Bond Strength	17.20 MPa	2495 psi	Adhesive Tensile Shear; ASTM D1002

Electrical Properties	Metric	English	Comments
Dielectric Constant	51	51	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	55.8 µm/m-°C	31.0 µin/in-°F	ASTM D696
Maximum Service Temperature, Air	93.3 °C	200 °F	Temperature Resistance - Dry
Shrinkage	0.10 %	0.10 %	Linear During cure; ASTM D2566

Processing Properties	Metric	English	Comments
Cure Time	30.0 min @Temperature 24.0 °C	0.500 hour @Temperature 75.2 °F	Functional cure
	360 min @Temperature 24.0 °C	6.00 hour @Temperature 75.2 °F
	10100 min @Temperature 24.0 °C	168 hour @Temperature 75.2 °F	As Tested
Pot Life	4.00 min @Temperature 23.9 °C	4.00 min @Temperature 75.0 °F

Descriptive Properties
Chemical/Solvent Resistance	1,1,1-Trichloroethane: fair		30 day immersion at 75°F. Sample cured 7 days at RT
	Ammonia: fair		30 day immersion at 75°F. Sample cured 7 days at RT
	Gasoline (Unleaded): very good		30 day immersion at 75°F. Sample cured 7 days at RT
	Hydrochloric Acid 10%: fair		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%: fair		30 day immersion at 75°F. Sample cured 7 days at RT
	Sulfuric Acid 10%: fair		30 day immersion at 75°F. Sample cured 7 days at RT
	Trisodium Phosphate: fair		30 day immersion at 75°F. Sample cured 7 days at RT
Color	Gray		Cured
Coverage	60 sq. in/lb		Uncured at 1/4"
Mix Ratio by volume	1:1
Mix Ratio by weight	1:1
Recoat Time	20 to 30 minutes
Specific Volume (in.³/lb)	14.89		Cured
Viscosity	Non-sag putty Mixed

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PITWD9174 / 239684

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