PY

Ⅰ

Ⅱ

1

soluble content(g/㎡)≥

3.0mm

2100

4.0mm

2900

2

tensile properties

tensile force(N/50mm) ≥

400

600

The maximum peak tensile% ≥

30

40

3

tear strength/N ≥

180

300

4

heat resistance

70℃，2h No flow, dripping

5

Low temperature flexibility/℃

-15

-25

flawless

6

waterproofness

0.3MPa，120min

7

peeling strength with waterproof sheet (N/mm)≥

no treatment

1.0

heat treatment

1.0

8

Permeability oil /sheet≤

2

9

persistent adhesivity/min≥

15

10

               peeling strength with cement mortar(N/mm)≥                      

no treatment

2.0

heat treatment

1.5

11

peeling strength with cement mortar after flooding(N/mm) ≥

1.5

12

thermal ageing(70℃，168h)

Pull retention%≥

90

Elongation rate%≥

80

Low Temperature flexibility/℃

-13

-23

flawless

13

thermal stability

appearance

No drum, fold, sliding, flowing

dimensional change/% ≤

2.0