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      Insulation compound EI4

      NO.

      Test Items

      Values

      1

      Before ageing test

      1.1 Tensile strength(MPa)

      ≥5.0

      1.2 Elongation at break(%)

      ≥250

      2

      After oven ageing test

      2.1 Test condition

      100±2℃/168h

      2.2 Middle range of tensile strength (MPa)

      ≥4.2

      2.3 Middle range of elongation at break (%)

      ≥250

      3

      Compatibility oven ageing test

      3.1 Test condition

      80±2℃/168h

      3.2 Tensile strength rate(%)

      ±25

      3.3 Elongation rate at break (%)

      ±25

      4

      Air bomb ageing test

      4.1 Test condition

      127±2℃/40h,0.55MPa


      4.2 Tensile strength rate(%)

      ±30


      4.3 Elongation at break rate (%)

      ±30

      5

      Ozone ageing test

      5.1 Test condition

      40℃/72h, concentration 2ppm or 25℃/24h,260ppm

      5.2 Test result

      Without crack

      6

      Heat extension test

      6.1 Test condition

      200±3℃/15min,stress 20N/cm2

      6.2 Loading elongation rate(%)

      < 100

      6.3 Un-loading elongation rate(%)

      < 25

      7

      Low-temperature bend test

      7.1 Test condition

      -40℃/4h

      7.2 Low-temperature elongation at unbreak rate (%)

      > 30

      7.3 Wire surface after low-temperature bend

      Without crack

      8

      Oxygen index and flame resistance (EN50265-2-1 burning test)

      ≥20

      GB5013 & HD22 & VDE282


      Return
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