PVC waterproof membranes

Item

         Specification

   H

    L

   P

   G

    GL

The resin thickness of Middle fabric，mm≥

—

            0.40

Tensile Properties

Maximum tension N/cm ≥

—

120

250

—

  120

Tension strength Mpa≥

10

10

Maximum tension elongation%≥

15

Fracture elongation，%≥

200

150

200

100

Heat treatment size change rate，%≤

2.0

1.0

0.5

0.1

0.1

Low-temperature bending

-25℃No crack

Water tightness

0.3Mpa,2hNo seepage

Attack resistance

0.5kg·m,No seepage

 static charge resistance

20kgNo seepage

Seam strip strength，N/mm≥

4.0orMembranes break

3.0

right-angle tear strength,N/mm≥

50

50

    Trapezoid tear strength，N≥

150

250

220

Water absorption（70℃ 168h）％

After soaking≤

4.0

air-cure later≥

-0.40

Heat aging（80℃）

 Time

672h

 Appearance

No blister，flaw，delamination，coherence，hole

Tensile strength retention，%≥

85

Elongation rate of keeping，％≥

80

 Low temperature bend

-20℃No crack

Chemistry

resistance

Appearance

No blister，flaw，delamination，coherence，hole

Tensile strength retention％≥

85

Elongation rate of keeping％≥

80

Low-temperature bending

-20℃No crack

Artificial weather accelerated aging

 Time

1500h^b

Appearance

No blister，flaw，delamination，coherence，hole

Tensile strength retention％≥

85

Elongation rate of keeping％≥

80

Low temperature bend

-20℃No crack