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Ensinger PEI

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Master Bond MasterSil 153Med Black Two Component Silicone
Categories: Polymer; Thermoset; Silicone

Material Notes: Key Features:
  • Meets ISO 10993-5 for cytotoxicity
  • Self priming feature
  • Serviceable from -65°F to +400°F
  • Exceptionally high tensile lap shear strength
Product Description: Master Bond MasterSil 153Med Black is a two component silicone compound with a paste consistency for high performance bonding and sealing. It passes ISO 10993-5 for cytotoxicity and can be used in medical device applications. MasterSil 153Med Black is an addition cured system and does not require exposure to air for cross-linking. It has a convenient one to one mix ratio by weight, and will not outgas while curing. It is 100% solids and contains no solvents. MasterSil 153Med Black exhibits typical silicone flexibility and high temperature resistance. MasterSil 153Med Black has an exceptionally long working life and very low exotherm. It bonds well to a wide variety of substrates including most metals, many plastics, glass and ceramic. Most importantly, it will bond well to cured silicone rubber. It has superb electrical insulation properties. Its remarkable flexibility allows it to withstand severe thermal cycling and resist vibration and shock. It has a self priming feature that enhances the bonding properties of the system. Also, it is very water resistant. MasterSil 153Med Black is translucent and is serviceable over the broad temperature range of -65°F to +400°F. It is widely used in medical device applications where high flexibility and splendid temperature resistance are required.

Product Advantages:

  • Addition cured, no by-products released during cure, does not require air for curing
  • Low exotherm, very long pot life
  • Bonds well to many substrates, including silicone rubber
  • Exceptionally high tensile lap shear strength
  • Meets ISO 10993-5 specifications

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
Viscosity 50000 - 250000 cPPart B, thixotropic
 150000 - 300000 cPPart A, thixotropic
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 20.0 - 35.0
Tensile Strength 400 - 500 psi
Elongation at Break 400 - 500 %
Adhesive Bond Strength 550 - 750 psilap shear, aluminum to aluminum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cm
Dielectric Constant 3.20
@Frequency 1e+6 Hz
Dielectric Strength 450 V/mil
@Thickness 3.17 mm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 350 - 400 µm/m-°C
Maximum Service Temperature, Air 204 °C
Minimum Service Temperature, Air -54.0 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 - 3.00 hour
@Temperature 93.3 °C
option
 48.0 - 72.0 hour
@Temperature 23.9 °C
option
Working Life 300 - 420 minafter mixing, 100 gram batch
Shelf Life 6.00 Monthin original, unopened containers
 
Descriptive Properties
Mixing ratio1:1Part A to B
Optimum cure scheduleOvernight at room temperature followed by 1 hour at 150-200°F

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