Epoxy Resin ТO200

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ТО200 is a two-part epoxy resin with unique characteristics, combining high heat resistance, strength and processability. The impregnation temperature is 20-25°C. Flexible curing mode in combination with post-curing allows achieving the required heat resistance at the minimum curing temperature. It shows the following features and properties:

  • Wide processing window >2 hours at 25°C
  • Curing at room temperature
  • Tracking of infusion process under UV light
  • Low exotherm
  • High mechanical properties
  • For tooling up to 200°C
  • This material data has been provided by Matmatch.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    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.

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    23.0 °C

    1.15 g/cm³

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    ASTM D792



    Elastic modulus

    23.0 °C

    3.26 GPa

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    ASTM D638

    Flexural strength

    23.0 °C

    94 MPa

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    ASTM D790

    Plane-Strain Fracture Toughnes

    23.0 °C

    0.64 MPa·√m

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    ASTM D5045

    Tensile strength

    23.0 °C

    60 MPa

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    ASTM D638

    Strain energy release

    ASTM D5045



    Coefficient of thermal expansion

    23.0 °C

    8.7E-5 1/K

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    ASTM E831

    Glass transition temperature

    211 °C

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    ASTM E2092

    Impregnation temperature

    20 - 25 °C

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    Max service temperature

    120 - 180 °C

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    for manufacturing CFRP and GFRP or for composite tooling respectively.

    Technological properties

    Application areas

    The resin can be used for manufacturing CFRP or GFRP with sustainable properties up to 120°C, or for composite tooling with service temperatures up to 180°C.

    Processing methods

    Thoroughly mix components A and B at 25°C in a 1:0.4388 weight ratio. It is recommended to use device with automatic mixing and mix under vacuum. Degas the resin with intensive mixing for 15-30 minutes at 20-25°С, pressure no more than 10 mbar. Assemble vacuum bag. Perform a leak test, the rate of the vacuum loss should not be more than 1 mbar per minute. The residual pressure in the bag must not be more than 10 mbar. Assemble the second vacuum bag. Carry out a leak test of the second vacuum bag with same conditions. The recommended impregnation temperature is 25°C. It is recommended to preliminarily dry the reinforcing material in a vacuum bag at 60-80°C for at least 1 h or 6 h at 25°C. Maintaining the temperature of the mold at 20-30°C, start the infusion process. After complete impregnation, close the resin inputs, continue evacuation from inner bag for at least 30 minutes at 25-40°C. Close the outputs from the inner bag. Continue evacuation from outer vacuum bag until gelation (~24 h at 25°C). After 48-72 hours, you can remove the part from the mold and post-cure. Post-cure: Increase the temperature at a rate of 5°C/h to 80°C then at rate 10-15°C/h to 180°C, dwell for 1 hour (or with step mode same as in picture). Highest mechanical properties of CFRP are achieved at a temperature of 80-120°C. When cured at higher temperatures, a higher heat resistance is achieved with a slight fall in the mechanical characteristics of the CFRP.