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Waterproofing membrane
performance The new waterproof material has strong impermeability, high resistance to high and low temperatures, as well as good strength and elongation. It is easy to operate, fast, and easy to master. It is widely used for roof waterproofing of high-end buildings, underground engineering waterproofing, tunnel top waterproofing, and leakage in garbage dumps.
scope of application Roads, railways, airports, water conservancy projects, environmental protection projects, electric power projects, waterproof materials, ground leather substrates, etc.
Technical Parameter
A、Appearance
Serial Number
project
index
1
cut
Flat and without obvious serrations
2
Perforation repair point No more than 2 per roll
3
Water marks, clouds, and mechanical scratches
Not obvious
4
Joints and Breaks
Not allowed
5
Tolerance on length and thickness
Length ± 0.1 (in meters)
Thickness ± 0.1 (in mm)
B、PVC Reference standard (GB/T12953-91)
Serial Number
project
Superior products
First Grade
Qualified products
1
tensile strength Mpa≥
15.0
10.0
7.0
2
elongation at break %≥
250
200
150
3
Heat treatment size change rate %≤
2.0
2.0
3.0
4
Low temperature bending
-No cracks at 20 ℃
5
impermeability
0.2Mpa, impermeable for 24 hours
6
Perforation resistance
Impermeable to water
7
Adhesion in shear state
≥ 2.0N/mm or broken at the joint
C、EVA、PE Reference standard (GB/T17643-2011)
Serial Number
project
index
GL
GH
GL-1
GL-2
GH-1
GH-2
1
tensile strength（Mpa）
≥14
≥17
≥25
2
elongation at break（%）
≥400
≥450
≥550
3
Right angle tear strength（N/mm）
≥50
≥80
≥110
4
Carbon black content（%）
≥2
5
Environmental stress cracking resistance F20（h）
≥1500
6
Oxidation induction time at 200 ℃（min）
≥20
7
Water vapor permeability coefficient g.cm/（cm2.s.Pa）
≤1.0×10-16
8
-70 ℃ low-temperature impact embrittlement performance
pass through
9
dimensional stability %
±3