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Metal adhesives

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Master Bond MB306 Low Viscosity Methyl Cyanoacrylate
Categories: Polymer; Adhesive; Thermoset; Acrylic/Cyanoacrylate Adhesive

Material Notes: Key Features:
  • One component, non-mix system
  • Excellent adhesion, especially to metals
  • Fast setting with rapid fixture time
  • Industrial grade
Product Description: Master Bond MB306 is a single component methyl cyanoacrylate adhesive. MB306 is a low viscosity, rapid setting cyanoacrylate system. Similar to other types of “super glue”, MB306 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 10-30 seconds depending upon the humidity and the substrates. The bond strength is exceptionally high in the shear mode. MB306 bonds well to a variety of substrates, such as plastics and rubbers, but it is most useful for bonding 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 +200°F. MB306 is a versatile, high performance, industrial grade methyl cyanoacrylate that can be used in many different applications in the aerospace, electronic, OEM, electrical, optical and R&D industries.

Product Advantages:

  • Rapid curing at room temperature; usually sets up within 30 seconds
  • No heating or mixing
  • Contact pressure usually sufficient for fixturing
  • Bonds well to a wide variety of substrates, especially metals
  • Low 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.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.05 g/cc
Viscosity 75 - 95 cP
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 70
Tensile Strength 6000 psi
Elongation at Break 2.0 - 3.0 %
Tensile Modulus 200000 - 250000 psi
Adhesive Bond Strength 290 psiButyl-Butyl, Tensile lap; Substrate Failure
 340 psiNatural Rubber-Steel, Tensile lap; Substrate Failure
 450 psiNatural Rubber-Natural Rubber, Tensile lap; Substrate Failure
 460 psiSBR-SBR, Tensile lap; Substrate Failure
 530 psiNeoprene-Steel, Tensile lap
 540 psiChloloroprene-Chloloroprene, Tensile lap; Substrate Failure
 550 psiNitrile-Nitrile, Tensile lap; Substrate Failure
 560 psiNBR-NBR, Tensile lap; Substrate Failure
 560 psiNeoprene-Neoprene, Tensile lap; Substrate Failure
 600 psiPolystyrene-Polystyrene, Tensile lap; Substrate Failure
 650 psiDelrin-Delrin, Tensile lap
 690 psiNylon-Nylon, Tensile lap
 780 psiBakelite-Nylon, Tensile lap
 990 psiNBR-Aluminum, Tensile lap
 1200 psiABS-ABS, Tensile lap; Substrate Failure
 1400 psiPhenolic-Phenolic, Tensile lap; Substrate Failure
 1490 psiAluminum-Steel, Tensile lap
 1500 psiCopper-Nylon, Tensile lap; Substrate Failure
 1840 psiChromium-Chromium, Tensile lap
 1980 psiAluminum-Aluminum, Tensile lap
 2050 psiPolyester-Polyester, Tensile lap
 2090 psiAluminum-Stainless Steel, Tensile lap
 2190 psiStainless-Steel Steel, Tensile lap
 2200 psiPVC (rigid)-Steel, Tensile lap; Substrate Failure
 2800 psiPVC(rigid)-PVC(rigid), Tensile lap; Substrate Failure
 2960 psiBrass-Brass, Tensile lap
 2980 psiBrass-Steel, Tensile lap
 3100 psiStainless-Stainless, Tensile lap
 3200 psiSteel-Steel, Tensile lap
 3400 psiCopper-Copper, Tensile lap
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cm
Dielectric Constant 3.6
@Frequency 1000 Hz
 
Thermal PropertiesOriginal ValueComments
CTE, linear 70.0 - 75.0 µm/m-°C
Maximum Service Temperature, Air 250 °F
Softening Point 300 - 310 °F
Minimum Service Temperature, Air -60.0 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 0.167 - 0.500 minset up time, substrate dependent
Shelf Life 6.00 Month
@Temperature 4.44 - 10.0 °C
in original, unopened containers
 
Descriptive Properties
ColorColorless, transparent liquid

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PMASTM927 / 185520

Metal adhesives

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