Master Bond MB297 Ethyl Cyanoacrylate Adhesive System

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Master Bond MB297 Ethyl Cyanoacrylate Adhesive System
Categories:	Polymer; Adhesive; Thermoset; Acrylic/Cyanoacrylate Adhesive
Material Notes:	Key Features: One component, non-mix system Top level adhesion to a wide variety of substrates Fast setting with rapid fixture time Industrial grade Product Description: Master Bond MB297 is a single component ethyl cyanoacrylate adhesive. MB297 is a high strength, rapid curing general purpose type cyanoacrylate system. MB297 has a higher viscosity (2,200-2,400 cps) and a slightly longer open time than low viscosity counterparts. Similar to other types of “super glue”, MB297 cures very rapidly with the rate of cure dependent upon the humidity—the higher it is, the faster the cure. Because curing is normally fast, minimal contact pressure is usually sufficient for bonding. It must be emphasized that this high strength system requires no heating or mixing. It typically sets up within 20-50 seconds depending upon the humidity and the substrates. The bond strength is exceptionally high in the shear mode. MB297 bonds well to a variety of substrates, especially to plastics, rubbers and metals. It has reasonably good chemical resistance, especially to cleaning agents. (See chemical resistance table.) The service temperature range for this system is -60°F to +250°F. MB297 is a versatile, high performance, industrial grade cyanoacrylate that can be used in a wide array of different applications in the aerospace, electronic, OEM, electrical, optical and R&D industries. Product Advantages: Rapid curing at room temperature; usually sets up within 1 minute No heating or mixing Contact pressure usually sufficient for fixturing Bonds well to a wide variety of substrates Higher viscosity Information provided by Master Bond Inc.
Vendors:	Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.05 g/cc	1.05 g/cc
Viscosity	2200 - 2400 cP	2200 - 2400 cP

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	70	70
Tensile Strength	41.4 MPa	6000 psi
Elongation at Break	2.0 - 3.0 %	2.0 - 3.0 %
Tensile Modulus	1.38 - 1.72 GPa	200 - 250 ksi
Adhesive Bond Strength	2.00 MPa	290 psi	Butyl-Butyl, Tensile lap; Substrate Failure
	2.14 MPa	310 psi	Steel-Butyl, Tensile lap; Substrate Failure
	2.34 MPa	340 psi	Steel-Natural Rubber, Tensile lap; Substrate Failure
	3.31 MPa	480 psi	SBR-SBR, Tensile lap; Substrate Failure
	3.72 MPa	540 psi	Chloloroprene-Chloloroprene, Tensile lap
	3.72 MPa	540 psi	Natural Rubber-Natural Rubber, Tensile lap; Substrate Failure
	3.72 MPa	540 psi	Neoprene-Steel, Tensile lap
	3.79 MPa	550 psi	Nitrile-Nitrile, Tensile lap; Substrate Failure
	3.86 MPa	560 psi	NBR-NBR, Tensile lap; Substrate Failure
	4.00 MPa	580 psi	Neoprene-Neoprene, Tensile lap; Substrate Failure
	4.14 MPa	600 psi	Polystyrene-Polystyrene, Tensile lap
	5.52 MPa	800 psi	Phenolic-Phenolic, Tensile lap; Substrate Failure
	6.27 MPa	910 psi	Nylon-Nylon, Tensile lap
	6.76 MPa	980 psi	Nylon-Bakelite, Tensile lap
	6.89 MPa	1000 psi	Delrin-Delrin, Tensile lap
	7.03 MPa	1020 psi	NBR-Aluminum, Tensile lap
	7.93 MPa	1150 psi	Aluminum-Aluminum, Tensile lap
	8.27 MPa	1200 psi	Chromium-Chromium, Tensile lap
	8.96 MPa	1300 psi	ABS-ABS, Tensile lap; Substrate Failure
	10.3 MPa	1500 psi	Nylon-Copper, Tensile lap; Substrate Failure
	10.3 MPa	1500 psi	Steel-PVC (rigid), Tensile lap; Substrate Failure
	11.5 MPa	1670 psi	Aluminum-Stainless Steel, Tensile lap
	12.0 MPa	1740 psi	Steel-Stainless Steel, Tensile lap
	15.2 MPa	2210 psi	Polyester-Polyester, Tensile lap
	16.5 MPa	2400 psi	Steel-Aluminum, Tensile lap
	16.6 MPa	2410 psi	Brass-Brass, Tensile lap
	16.8 MPa	2440 psi	Steel-Steel, Tensile lap
	17.2 MPa	2500 psi	Copper-Copper, Tensile lap
	17.2 MPa	2500 psi	Stainless-Stainless, Tensile lap
	19.3 MPa	2800 psi	PVC(rigid)-PVC(rigid), Tensile lap; Substrate Failure

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1.00e+15 ohm-cm	>= 1.00e+15 ohm-cm
Dielectric Constant	3.6 @Frequency 1000 Hz	3.6 @Frequency 1000 Hz

Thermal Properties	Metric	English	Comments
CTE, linear	70.0 - 75.0 µm/m-°C	38.9 - 41.7 µin/in-°F
Maximum Service Temperature, Air	121 °C	250 °F
Softening Point	152 - 157 °C	305 - 315 °F
Minimum Service Temperature, Air	-51.1 °C	-60.0 °F

Processing Properties	Metric	English	Comments
Cure Time	0.330 - 0.830 min	0.00550 - 0.0138 hour	set up time, substrate dependent
Shelf Life	6.00 Month @Temperature 4.44 - 10.0 °C	6.00 Month @Temperature 40.0 - 50.0 °F	in original, unopened containers

Descriptive Properties
Chemical Resistance	75% Initial Strength Retained		Gasoline at 22°C, 1000 hrs
	80% Initial Strength Retained		Gasoline at 22°C, 500 hrs
	85% Initial Strength Retained		Isopropanol at 22°C, 500 hrs
	85% Initial Strength Retained		Isopropanol at 22°C, 1000 hrs
	90% Initial Strength Retained		Mineral Spirit at 22°C, 500 hrs
	90% Initial Strength Retained		Mineral Spirit at 22°C, 1000 hrs
	90% Initial Strength Retained		Motor Oil at 40°C, 500 hrs
	90% Initial Strength Retained		Motor Oil at 40°C, 1000 hrs
Color	Colorless, transparent liquid

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.

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PMASTM922 / 185515

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