1.Product description
Tunnel Waterproofing HDPE Membrane(DYP-819) is a widely used waterproof membrane that using ethylene, vinyl acetate co-polymer/polyethylene as main material, mixing in other modification additives. Its anti-aging and high durability make it specially adaptable for tunnel waterproofing engineering.
2. Product advantages & standard
High tensile strength
High elongation and resistance to cracking or rupture.
low cold-bending rate;
Rarely affected by environment temperature changes.
Convenient construction, soft and flexible property to well bond with the substrate surface.
Anti-mildew and acid & alkali corrosion,
Specially suitable for hot gas welding , seamless and tightly bond after welding,
No volatile solvent, no toxic gases, no pollution to the environment.
Executive standard: GB18173.12012 Polymeric Waterproof Materials Section I: Sheet | |||
Item | Index(JS2) | ||
Tensile strength /Mpa | 23℃ ≥ | 16 | |
60℃ ≥ | 6 | ||
Elongation at break /% | 23℃ ≥ | 550 | |
60℃ ≥ | 350 | ||
Tear Strength/（kN/m） ≥ | 60 | ||
Watertightness/30min | 0.3Mpa, no leakage | ||
Cold bending | -35℃, no crack | ||
Heat-treatment size change /mm | Extend ≤ | 2 | |
Shrinkage ≤ | 6 | ||
Lap-joint peeling strength | Standard /N/mm ≥ | 1.5 | |
Retention rate after water soaking (23℃*168h) /% ≥ | 70 | ||
3. Product Specification
Thickness(mm): 0.7/0.8/1.0/1.2/1.5/2.0
Width: 1~4m
Length: 20-30m or customized.
4.Application scope
Tunnel, metro or other underground waterproofing engineering;
River,Lack ,pond and tank liner waterproofing;
Swimming pool, drinking pool, or reservoir waterproofing;
chemical plant, oil refinery, gas storage tank, chemical reaction pool lining,
Building roofing waterproofing;
5.Packing & Storage
Keep the packaging complete and without damage, store product in ventilated, dry place,
stack height should not exceed 5 roll layers.
Avoid direct sunlight, acid, alkali, oil & organic solvent contact, and be away from heat source.
Storage period is one year under normal storage & transportation condition