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Metal adhesives

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Master Bond EP30NS Two part, nanosilica filled epoxy system
Categories: Polymer; Thermoset; Epoxy; Epoxy Encapsulant, Unreinforced

Material Notes: Key Features:
  • Excellent physical strength properties
  • Outstanding dimensional stability
  • Exceptionally low shrinkage upon curing
  • Highly abrasion resistant
Master Bond EP30NS is a nanosilica filled, moderate viscosity epoxy with good flow. It can be used for high performance bonding, sealing, coating and encapsulation. It is formulated to cure at room temperature or more rapidly at elevated temperatures. The optimum cure is overnight at room temperature, followed by 2-3 hours at 150-200°F. It has an easy to use, non-critical four to one mix ratio by weight. This system is 100% reactive and does not contain any solvents or diluents. It is especially recommended when a moderate viscosity epoxy with high dimensional stability and good physical strength properties are desired. It adheres well to a wide variety of materials including metals, composites, glass, ceramics, rubbers and many plastics. The cured system has top notch electrical insulation properties. It resists many chemicals including water, oils, fuels, acids, bases and solvents. The special property profile of this system is due to the nanosilica component of the formulation. It also gives the EP30NS much higher abrasion resistance than typical epoxy and much lower shrinkage upon curing (linear shrinkage, less than 0.01%). The service temperature range is -60°F to +300°F. Part A is translucent, Part B is transparent. This system is intended to be used in the aerospace, electronic, optical, opto-electronic and specialty OEM applications where the property enhancements due to the properties of the nanosilica are desirable.

Product Advantages:

  • Convenient mixing: moderate viscosity, easy to apply
  • High physical strength properties; forms dimensionally stable, rigid bonds
  • Outstanding electrical insulation properties; well suited for smaller pottings
  • Excellent abrasion resistance
  • Passes ASTM E595 for NASA low outgassing

Information provided by Masterbond.

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
Viscosity 250 - 500 cPPart B
 25000 - 45000 cPmixed
 70000 - 90000 cPPart A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80 - 90
Tensile Strength 9000 - 110000 psi
Tensile Modulus 400000 - 450000 psi
Compressive Strength 18000 - 20000 psi
Adhesive Bond Strength 1400 - 1600 psilap shear, Al/Al
Taber Abrasion, mg/1000 Cycles 18.3CS-17 wheel
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity >= 1.00e+15 ohm-cm
Dielectric Constant 3.5
@Frequency 60 Hz
Dielectric Strength 450 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 30.0 - 35.0 µm/m-°C
Maximum Service Temperature, Air 300 °F
Minimum Service Temperature, Air -60.0 °F
 
Optical PropertiesOriginal ValueComments
Refractive Index 1.56
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
 24.0 - 48.0 hour
@Temperature 23.9 °C
Working Life 20.0 - 30.0 minAfter mixing, 100 g batch
Shelf Life 3.00 - 6.00 MonthIn original unopened containers
 
Descriptive Properties
Cure scheduleovernight at 75°F plus 2-3 hours at 150-200°FOptimum
Mixing Ratio4:1Parts A to B, by weight

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PMASTM713 / 233770

Metal adhesives

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