Structural Epoxy Resin T26 (EP-PCF)



Т26 is a single part low viscosity epoxy infusion carbon fabric plasticized resin developed for high-loaded structures. T26 offers simple and flexible processing due to low viscosity at relatively low impregnation temperatures (110°С). T26 was developed specially for RTM and vacuum infusion molding, to produce laminates with low porosity and extremely high mechanical performance, especially in crack resistance. It shows the following features and properties:

  • One-part resin designed specifically for high-temperature infusion or RTM
  • Wide processing window > 7 hours at 110°C
  • Curing at 180°C provides glass transition temperature of 205°C
  • High wet glass transition temperature —172°C
  • Very high resistance to impact
  • Operating temperatures from –60°C to 150°C
  • Properties


    Compressive strength Rmc

    638 MPa at 20 °C

    ASTM D6641

    Compressive strength, transverse Rs,trans

    608 MPa at 20 °C

    ASTM D6641

    Elastic modulus E

    66 GPa at 20 °C

    ASTM D3039

    Elastic modulus, transverse E

    66 GPa at 20 °C

    ASTM D3039

    Shear modulus, G₁₂ G12

    4.3 GPa at 20 °C

    ASTM D5379

    Shear strength, τ₁₂ τ12

    79 MPa at 20 °C

    Shear strength, τ₁₃ τ13

    66 MPa at 25 °C

    ASTM D2344

    Hide chart

    Strain energy release GIC

    ASTM D5528

    Tensile strength Rm

    904 MPa at 20 °C

    ASTM D3039

    Tensile strength, transverse Rm,trans

    904 MPa at 20 °C

    ASTM D3039

    Technological properties

    Application areas

    Drones;Sports equipment: Frame, wheels, seat, seat post, handlebar, head stem and crank arm of a sports bicycle are made of carbon composite;Geometry strengthen elements: Experimental stringer panel

    Processing history

    Samples for testing were obtained by vacuum infusion based on T26 resin and plasticized carbon fabric (PCF) 22508 covered by veil.

    Processing methods

    Preheat the resin to 60-90°С in its container for transfer to the resin pot. Degas the resin for 30-40 minutes while heating to 90°С. Preheat the tool to 100-110°С (or to 115-120°С for parts having complex shape or for UD parts). Maintaining resin pot temperature of 95 °С and tool temperature of 100-115 °С, begin resin infusion. After complete impregnation increase tool temperature at 2°С/min to 180°С. Dwell at 180°С for 3 h. Cool the tool to 90°С at <5°С/min before releasing part from tool.

    This material data has been provided by Itecma.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.