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      Insulation compound EI6

      NO.

      Test Items

      Values

      1

      Before ageing test

      1.1 Tensile strength(MPa)

      ≥5.0

      1.2 Elongation at break(%)

      ≥200

      2

      Air oven ageing test

      2.1 Test condition

      135±2℃/168h

      2.2 Tensile strength(MPa)

      ≥5.0

      2.3 Tensile strength rate(%)

      ±30

      2.4 Elongation at break rate (%)

      ±40

      3

      Air bomb ageing test

      3.1 Test condition

      127±2℃/40h

      3.2 Tensile strength rate(%)

      ±30

      3.3 Elongation at break rate (%)

      ±30

      4

      Heat extension test

      4.1 Test condition

      250±3℃/15min, stress20N/cm2

      4.2 Loading elongation rate(%)

      < 100

      4.3 Un-loading elongation rate(%)

      < 25

      5

      Ozone ageing test

      5.1 Test condition

      25±2℃/24h, concentration 2.5-3%

      5.2 Test result

      No cracks

      5.3 Test condition

      40±2℃/72h, concentration 200±50ppm

      5.4 Test result

      No cracks

      6

      Low-temperature bend test

      6.1 Test condition

      -50±3℃

      6.2 Low-temperature elongation at unbreak(%)

      > 30

      6.3 Wire surface after low-temperature bend

      No cracks

      7

      Maximum material operating temperature

      90℃

      Polymer:  EPDM

      Standard No.:EN 50363-1:2005


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