eFunda Polymers: Properties of Epoxy {flexibilized, casting resins and compounds}
engineering fundamentals Polymer Material Properties
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Epoxy
 
List of Suppliers
Additives: flexibilized
Application: casting resins and compounds
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   7 - 2415  compressive   D638
Tensile Strength (MPa)   14 - 69 at break   D638
Compressive Strength (MPa)
at yield or break
  7 - 97     D695
Flexural Strength (MPa)
at yield or break
  7 - 90     D790
Elongation at break (%)   20 - 85     D638
Hardness   65 - 89  Shore D   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  1.2 - 2.7     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   20 - 100     D696
Deflection Temperature (ºC)   23 - 121   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  0.96 - 1.35   D792
Water Absorption (% weight increase)  0.27 - 0.5  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted
  235 - 400   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  thermoset  Tm, crystalline  
Linear Mold Shrinkage (cm/cm)  0.001 - 0.01   D955

Suppliers
Conap, Inc. Olean, NY  800-836-3666
Dow Plastics Midland, MI  800-441-4369
Emerson & Cuming Specialty Polymers Billerica, MA  800-832-4929
Epic Resins Palmyra, WI  800-242-6649
ITW Devcon Danvers, MA  800-933-8266
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