TPO Water-resistant Membrane

No.

Test Item

Indicators

L

1

The thickness of resin layer above the reinforcement fabric   mm≥

2

Stretching Performance

Maximum Tension  N/cm ≥

200

Tension Strength  Mpa≥

Max. Tension Elongation       %≥

Breaking Elongation%≥

250

3

Heating Treatment Size Change Rate%≤

1.0

4

Low-temperature Bending

    -40°C  No Craze

5

Water Impermeability

0.3Mpa,2h

Water Impermeability

6

 Impact Resistance

0.5kg·m ,

Water Impermeability

7

     Anti-static Load^a

8

Seam Peel Strength  N/mm ≥

4.0or Membrane Breaking

9

Right-angle Tear Strength  N/mm ≥

10

Trapezoid Tear Strength   N≥

300

11

Water Absorbing Capacity

(70°C168h)%

After Soaking ≤

4.0

After Airing≥

-0.40

12

Heat aging(80°C)

Time

672h

Appearance

No blisters, cracks, delamination, bonding and holes

Tensile Strength (max. tensile)Retention%≥

90

Elongation Retention %≥

90

Cold Bending

-40°C  No Craze

13

Chemical Resistance

Appearance

No blisters, cracks, delamination, bonding and holes

Tensile Strength (max. tensile)Retention %≥

90

Elongation Retention   %≥

90

Cold Bending

-40°C

No Craze

14

Artificial climate accelerating ageing

Time

1500h^b

Appearance

No blisters, cracks, delamination, bonding and holes

Tensile Strength (max. tensile)Retention %≥

90

Elongation Retention   %≥

90

Cold Bending

-40°C

 No Craze

a  Anti-static loading is only applied to the roofing membrane.

bThe artificial climate accelerated time is 2500 hours for single roofing membrane.