TPO full form is Thermoplastic Poly Olefin - sheet applied membrane.
As per Standard ASTM D 6878 – 03, Standard Specification for Thermoplastic Polyolefin Based Sheet Roofing are as follows:
Thickness,
min, mm (in)
Sheet-overall
1.0
(0.039)
Coating over
fabric or scrim, weathering side only 0.305
(0.012)
Breaking
strength, min, N (lbf) 976
(220)
Elongation
at reinforcement break, min, % 15
Tearing
strength, min, N (lbf) 245
(55)
Brittleness
point, max, °C (°F) -40
(-40)
Ozone
resistance, no cracks Pass
Properties
after heat aging: (retained values)
Breaking
strength, % min 90
Elongation
at reinforcement break, % min 90
Tearing
strength, % min 60
Weight
change (mass), max % ±1
Linear
dimensional change, max, % ±1
Water
absorption, max, mass % ±3
Factory seam
strength, min, N (lbf) 290
(66)
Weather
resistance: (retained values)
Visual
inspection Pass
Breaking
strength, % min 90
Elongation
at reinforcement break, min, % 90
Many thanks to google.com and doc88.com from where the details have been collected.
No comments:
Post a Comment