Epoxy resin TK123

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Description

TK123 is a two-part low viscosity epoxy infusion resin developed for tooling up to 120°С, or CFRP parts with sustainable properties up to 90°С. The resin offers simple and flexible processing due to low viscosity at room temperature (lower than 500 mPa*s at 25°C). TK123 was developed specially for vacuum infusion molding, to produce laminates with low porosity and good mechanical performance. It shows the following features and properties:


  • Two-part resin system for vacuum infusion and RTM
  • Wide processing window > 2 hours at 25°C
  • Curing at room temperature
  • Low exotherm
  • High mechanical properties
  • For tooling up to 120°C
  • Los datos sobre este material han sido proporcionados por Matmatch.

    A menos que se indique lo contrario, todas las medidas corresponden a condiciones de temperatura ambiente. A menos que se indique lo contrario, se utilizan las unidades del SI.
    Las normas armonizadas son similares a uno o varios estándares del proveedor. Es posible que algunas normas armonizadas se ajusten al estándar original, mientras que otras pueden quedar fuera de su alcance.

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    Propiedades

    General

    PropertyTemperatureValueComment

    Densidad

    23.0 °C

    1.14 g/cm³

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    ASTM D792

    Mecánica

    PropertyTemperatureValueComment

    Módulo elástico

    23.0 °C

    3.56 GPa

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    ASTM D638

    Plane-Strain Fracture Toughnes

    23.0 °C

    0.96 MPa·√m

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    ASTM D5045

    Resistencia a la flexión

    23.0 °C

    161 MPa

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    ASTM D790

    Resistencia a la tracción

    23.0 °C

    80 MPa

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    ASTM D638

    Liberación de energía de deformación

    ASTM D5045

    Aplicaciones térmicas

    PropertyValueComment

    Temperatura de transición del vidrio

    101 °C

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    ASTM E2092

    Technological properties

    Property
    Application areas

    Marine: The shells of boats and sport catamarans can be made of composites;Composite tooling: ITECMA composite tooling materials combines low CTE index with extreme lightness.

    Processing methods

    Thoroughly mix components A and B at 25°C in a 1: 0.434 weight ratio. The error in the dosage of components should not exceed 2%. Particular attention should be given to mixing at the walls and bottom of the mixing tank. It is recommended to use devices 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, between the layers of the vacuum film airweave should be laid . Carry out a leak test of the second vacuum bag. The residual pressure in the bag must not be more than 10 mbar. Maintain temperature at 25-40°C. The recommended impregnation temperature is 25-35°C. It is recommended to preliminarily dry the reinforcing material in vacuum bag at 60-80°C for at least 1 hour. Maintaining the temperature of the mold at 25-35°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 (~24h at 25°C). After 48-72 hours, you can remove the part from the mold and post-cure without mold. Post-cure: Increase the temperature at a rate of 2°C/h to 80°C, keep it at 80°C for 6 hours. Curing is allowed immediately after the impregnation process without being removed from the mold. Increase the temperature at a rate of 2°C/min to 80°C, exposure at 80°C for 6 hours. Before removing the part, cool the tooling to at least 50°C at a speed of no more than 5°C/min. Curing (heating rate 2°C/min) or post-curing (heating rate 2°C/h) to 120°C is permissible to obtain a glass transition temperature of 140°C.