Project

index

first-class.

qualified

Tensile strength/Mpa

  room temperature ≥

2.4

2.2

60℃  ≥

0.9

0.7

elongation at break/%

room temperature ≥

300

250

   -20℃  ≥

150

100

tear strength/(kN/m)              ≥

15

Watertightness (30min)

0.2 MPa   impermeable

Cold bending temperature/℃          ≥

20

Heating expansion amount/mm

Extend  ≤

2

Shrink    ≤

4

air heat ageing

(80℃×168h)

Tensile strength retention rate%、

80

elongation at break retention rate /%

70