Adiprene® L 275

Category: PUR-Ether/TDI , Polyurethane (Polyether, TDI)
Manufacturer: Chemtura
Trademark: Adiprene®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: WWfBtZ_Adiprene-L-275.pdf
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ADIPRENE L 275 is a polyether-based liquid urethane prepolymer which is readily processable by conventional hand and machine mixing techniques similar to those used for ADIPRENE L 315. ADIPRENE L 275 produces high quality vulcanizates in the 70-75 Shore D hardness range when cured with MBCA (4,4'-methylene-bis[o-chloroaniline]). These tough, high resilience elastomers have many unique features:
  • Excellent low-temperature flexibility
  • Excellent abrasion resistance
  • Good hydrolytic stability
  • Good compression set resistance
  • Outstanding impact strength
  • Excellent processing and controlled hardness build-up

ADIPRENE L 275 has a longer working life when mixed with curatives than does ADIPRENE L 315, making it more suitable for the preparation of large parts.
General Information
Features
  • Good Abrasion Resistance
  • Good Processability
  • Good Toughness
  • High Impact Resistance
  • Hydrolytically Stable
  • Low Temperature Flexibility
  • Resilient
Forms
  • Liquid
Processing Method
  • Casting
  • Compression Molding
  • Vacuum Casting
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.21g/cm³ASTM D792
Molding Shrinkage - Flow 1.7%ASTM D955
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore D)74ASTM D2240
Hardness - P & J
    21°C 3.00
    70°C 4.00
    100°C 7.00
    121°C 8.50
MechanicalNominal ValueUnitTest Method
Flexural Modulus 758MPaASTM D790
Compressive Strength ASTM D695
    10% Strain 42.3MPa
    25% Strain 78.6MPa
ElastomersNominal ValueUnitTest Method
Tensile Stress (100% Strain)35.0MPaASTM D412
Tensile Strength 49.1MPaASTM D412
Tensile Elongation (Break)230%ASTM D412
Tear Strength (Split)20kN/mASTM D470
Compression Set 1(70°C, 22 hr)1.1%ASTM D395A
Bayshore Resilience 47%ASTM D2632
ImpactNominal ValueUnitTest Method
Notched Izod Impact 960 to 1000J/mASTM D256
ThermalNominal ValueUnitTest Method
Deflection Temperature Under Load (1.8 MPa, Unannealed)48.0°CASTM D648
Brittleness Temperature -54.0°CASTM D746
ThermosetNominal ValueUnit
Thermoset Components
    Hardener Mix Ratio by Weight: 26
    Resin Mix Ratio by Weight: 100
Pot Life 3.0min
Post Cure Time (100°C)16hr
Uncured PropertiesNominal ValueUnit
Curing Time (100°C)1.0hr
Note Message
1 .2.8 MPa (400psi) load
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