Kynar Flex® 2800-20

Alternative and trade names
PVDF
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Description

Kynar Flex® resins are fluorinated thermoplastic copolymers.

Outstanding characteristics: chemical resistance, imperviousness to UV, high barrier properties, high purity, good mechanical and thermo-mechanical properties.

Kynar Flex® resin is a standard grade of granules, compared to the homopolymer grades, which exhibits a lower modulus, a better resistance to stress cracking in alkaline and oxidizing media, and a lower melting point. For cable coating, extrusion of tube and plaque, injection molding.

Additional characteristics:

  • Easily processed using conventional equipment
  • Excellent thermal stability
  • Retains properties after aging
  • Pigmentable
  • UL RTI temperature rating 125°C

  • This material data has been provided by Arkema Technical Polymers.

    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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    Properties

    General

    PropertyValueTesting StandardConditionComment

    Coefficient of friction

    0.33 [-]

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    ASTM D1894

    vs Steel, Static

    0.33 [-]

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    ASTM D1894

    vs Steel, Kinetic

    Density

    1.77 - 1.8 g/cm³

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    ASTM D792

    1.78 g/cm³

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    ISO 1183

    dry

    Limiting oxygen index

    42 %

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    ASTM D2863, ISO 4589-1/-2

    dry

    Water absorption

    0.03 %

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    Sim. to ISO 62

    Mechanical

    PropertyTemperatureValueTesting StandardConditionComment

    Compressive strength

    31 - 41.4 MPa

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    ASTM D695

    Elastic modulus

    0.552 - 0.896 GPa

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    ASTM D638

    0.7 GPa

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    ISO 527-1/-2

    dry

    Elongation

    50 %

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    ISO 527-1/-2

    dry

    min. | nominal

    100 - 300 %

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    ASTM D638

    Elongation at yield

    15 %

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    ISO 527-1/-2

    dry

    Flexural modulus

    0.483 - 0.758 GPa

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    ASTM D790

    Hardness, Shore D

    60 - 70 [-]

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    ASTM D2240

    Impact strength, Charpy notched

    -30 °C

    5 kJ/m²

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    ISO 179/1eA

    dry

    23 °C

    60 kJ/m²

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    ISO 179/1eA

    dry

    Impact strength, Charpy notched, ASTM

    23 °C

    534 - 1070 J/m

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    ASTM D256

    Impact strength, Charpy unnotched

    -30 °C

    235 kJ/m²

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    ISO 179/1eU

    dry

    23 °C

    177 kJ/m²

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    ISO 179/1eU

    dry

    Unlock all property charts

    Impact strength, Charpy unnotched, ASTM

    No Break at 23°C

    ASTM D256

    Tensile strength

    17.2 - 34.5 MPa

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    ASTM D638

    Yield strength

    20 - 34.5 MPa

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    ASTM D638

    27 MPa

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    ISO 527-1/-2

    dry

    Thermal

    PropertyValueTesting StandardConditionPressureComment

    Coefficient of thermal expansion

    0.000126 - 0.000185 1/K

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    ASTM D696

    0.00016 1/K

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    ISO 11359-1/-2

    dry

    Glass transition temperature

    -41.1 - -39.4 °C

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    ASTM D7028

    -40 °C

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    ISO 11357-1/-2

    dry

    10°C/min

    Heat deflection temperature

    40 - 55 °C

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    ASTM D648

    2 MPa

    248 °F/hr

    48 °C

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    ISO 75-1/-2

    dry

    2 MPa

    60 - 75 °C

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    ASTM D648

    0.45 MPa

    248 °F/hr

    68 °C

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    ISO 75-1/-2

    dry

    0.45 MPa

    Melting point

    140 - 145 °C

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    ASTM D3418

    143 °C

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    ISO 11357-1/-3

    dry

    10°C/min

    Relative temperature index, electrical

    130 °C

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    UL 746B

    Relative temperature index, mechanical strength

    130 °C

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    UL 746B

    Specific heat capacity

    745 - 958 J/(kg·K)

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    DSC

    Thermal conductivity

    0.144 - 0.18 W/(m·K)

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    ASTM D433

    Thermal decomposition in air

    375 °C

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    TGA

    1% wt. loss

    Thermal decomposition in nitrogen

    410 °C

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    TGA

    1% wt. loss

    Vicat softening temperature

    76 °C

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    ISO 306

    50°C/h 50N

    Flammability

    At thickness 1.5 mm IEC 60695-11-10: V-0, At thickness 0.8 mm IEC 60695-11-10: V-0

    Electrical

    PropertyValueFrequencyTesting StandardCondition

    Dielectric constant

    3.5 - 10.6 [-]

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    1KHz

    ASTM D150

    6 [-]

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    1MHz

    IEC 60250

    dry

    11 [-]

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    100Hz

    IEC 60250

    dry

    Dielectric strength

    51.2 - 59.1 kV/mm

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    ASTM D149

    Dissipation factor

    0.02 - 0.21 [-]

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    100KHz

    ASTM D150

    0.057 [-]

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    100Hz

    IEC 60250

    dry

    0.234 [-]

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    1MHz

    IEC 60250

    dry

    Volume resistivity

    2e+14 Ω·cm

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    ASTM D257

    65% RH

    2e+14 Ω·cm

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    IEC 60093

    dry

    Optical

    PropertyValueTesting StandardComment

    Refractive index

    1 [-]

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    ASTM D542

    sodium D line

    Rheological Properties

    PropertyValueTesting StandardConditionComment

    Melt mass-flow rate

    1 - 8 g/10min

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    ASTM D1238

    230°C/5kg

    Melt viscosity

    1200 - 2000 Pa·s

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    ASTM D3835

    Melt volume-flow rate

    4.5 cm³/10min

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    ISO 1133

    dry

    230°C/5kg

    Technological properties

    Property
    Application areas

    Chemical Process Industry,Chemical Process Industry - Injection Molding,Fluoropolymer Processing Aids

    Processing methods

    Injection Molding:

  • Melt temperature (°C) ISO 294: 240
  • Mold temperature (°C) ISO 10724: 90
  • Injection velocity (mm/s) ISO 294: 10
  • Pressure at hold (MPa) ISO 294: 13