Thermoplastic Polyolefin Roofing Membranes
1.Resistanct to many chemicals
2.Good cold-temperature flexibility
Thermoplastic Polyolefin Roofing Membranes
Products Description
In general, TPO membranes are being marketed as a product that combines the properties of EPDM and PVC, without the associated drawbacks that the latter two materials have. In other words, they are supposed to be as UV-resistant and as heat-resistant as EPDM, and as heat-weldable as PVC. The following benefits and characteristics have been reported for TPOs [1-3]: • environmentally friendly and recyclable
• seams can be heat welded • available in many colours
• resistant to heat and UV degradation • resistant to many chemicals • good cold-temperature flexibility • no external plasticizers added.
Physical Properties
TPO Physical Properties
Item | Specification | |||||||
H | L | P | G | GL | ||||
The resin thickness of Middle fabric, mm≥ | — | 0.40 | ||||||
Maximum tension,N/cm ≥ | — | 200 | 250 | — | 200 | |||
Tension strength,Mpa≥ | 12 |
|
| 12 |
| |||
Maximum tension elongation,%≥ |
|
| 15 |
|
| |||
Fracture elongation,%≥ | 500 | 250 |
| 400 | 200 | |||
Heat treatment size change rate %≤ | 2.0 | 1.0 | 0.5 | 0.1 | 0.1 | |||
Low temperature bend | -40°C No crack | |||||||
Water tightness | 0.3Mpa,2h, No seepage | |||||||
Attack resistance | 0.5kg·m,No seepage | |||||||
Static charge resistance | — | 20kg ,No seepage | ||||||
Seam strip strength ,N/mm≥ | 4.0 or Membranes break | 3.0 | ||||||
Right-angle tear strength,N/mm≥ | 60 |
|
| 60 |
| |||
Trapezoid tear strength N≥ | — | 300 | 450 |
| 350 | |||
Bibulous rate (70°C 168h), % | After soaking≤ | 4.0 | ||||||
Air-cure later≥ | -0.40 | |||||||
Heat aging (115°C)
| Time | 672h | ||||||
Appearance | No blister,flaw,delamination,coherence,hole | |||||||
Tensile strength retention,%≥ | 90 | |||||||
Elongation rate of keeping,%≥ | 90 | |||||||
Low temperature bend | -40°C, No crack | |||||||
Chemistry resistance | Appearance | No blister,flaw,delamination,coherence,hole | ||||||
Tensile strength retention,%≥ | 90 | |||||||
Elongation rate of keeping,%≥ | 90 | |||||||
Low-temperature bending | -40°C, No crack | |||||||
Artificial weather accelerated aging | Time | 1500hb | ||||||
Appearance | No blister,flaw,delamination,coherence,hole | |||||||
Tensile strength retention%≥ | 90 | |||||||
Elongation rate of keeping%≥ | 90 | |||||||
Low temperature bend | -40°C ,No crack | |||||||
Application Range
Products form waterproof layers in roof ,basement, steel structure roofing,big market,large workshop,etc.
