Surlyn® 7940

Category: EMAA , Ethylene Methacrylic Acid
Manufacturer: DuPont Packaging & Industrial Polymers
Trademark: Surlyn®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: ivo6ar_Surlyn-7940.pdf
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Surlyn® 7940 is a lithium ionomer thermoplastic resin. It is available for use in
conventional extrusion and injection equipment, to create various sheets or shapes.
Surlyn® 7940 thermoplastic resin is an advanced ethylene/acid/acylate terpolymer,
in which some of the MAA acid groups have been partially neutralized with lithium
ions.
General Information
Features
  • Terpolymer
Forms
  • Pellets
Processing Method
  • Blow Molding
  • Extrusion
  • Injection Molding
  • Sheet Extrusion
PhysicalNominal ValueUnitTest Method
Specific Gravity 0.940g/cm³ASTM D792, ISO 1183
Melt Mass-Flow Rate (MFR) (190°C/2.16 kg)2.6g/10 minASTM D1238, ISO 1133
Ion Type Lithium
ThermalNominal ValueUnitTest Method
Freezing Point
    -- 48°CISO 3146
    -- 48°CASTM D3418
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore D)68ASTM D2240, ISO 868
MechanicalNominal ValueUnitTest Method
Tensile Strength
    Yield, 23°C, Compression Molded 115.2MPaASTM D638
    Break, 23°C 26.2MPaASTM D638, ISO 527-2
Tensile Elongation (Break, 23°C)290%ASTM D638, ISO 527-2
Flexural Modulus (23°C)420MPaASTM D790
ImpactNominal ValueUnitTest Method
Tensile Impact Strength ASTM D1822
    -40°C 525kJ/m²
    23°C 462kJ/m²
ThermalNominal ValueUnitTest Method
Vicat Softening Temperature 63.0°CASTM D1525, ISO 306
Peak Melting Temperature 91.0°CASTM D3418, ISO 3146
OpticalNominal ValueUnitTest Method
Haze (6350 µm)4.0%ASTM D1003
InjectionNominal ValueUnit
Processing (Melt) Temp 185 to 285°C
Note Message
1 .Type IV, 50 mm/min
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