Waterproof board It is a kind of anti-seepage material made of high molecular polymer as the basic raw material, which is divided into homogeneous waterproof board and composite waterproof board. Its main function is to prevent liquid leakage and gas volatilization. Raw materials generally include: small density polymer ethylene （ LDPE ）Linear density small polyethylene（ LLDPE ）High density polyethylene（ HDPE ）, ethylene/vinyl acetate copolymer（ EVA ）, polyvinyl chloride (PVC), ethylene vinyl acetate modified asphalt (ECB), etc. The waterproof board is mainly used for seepage prevention and isolation in rock engineering, but it also plays a role in strengthening and protection. It is mainly used for anti-seepage of earth rock dam, rockfill dam, masonry dam, concrete dam, tailings dam, sewage reservoir dam, channel, liquid storage pool and other projects; Anti seepage lining of subway, basement and tunnel; Seepage prevention of highway * * * foundation; Geotextiles such as filament geotextile and bentonite waterproof blanket shall be used in the sanitary waste landfill. wait.
Product features:
1. Excellent flexibility, impermeability, elongation and wear resistance;
2. It has good isolation and puncture resistance;
3. No chemical pollution;
4. Acid and alkali resistance and a variety of chemicals, good dimensional stability, good adhesion, easy to construct.
Product use:
1. Seepage prevention and waterproofing works of roads, * * *, tunnels, subways and water conservancy;
2. Waste landfill, ash dam, tailings dam and other environmental protection projects.
PVC Performance parameters of waterproof board
S/N | project | First Grade |
one | Tensile strength Mpa | ten |
two | Breaking tensile rate% | two hundred |
three | Size change rate of heat treatment | two |
four | Low temperature bending rate | - 20 ℃, no crack |
five | Permeability resistance | 0.2mpa24h impermeable |
six | Puncture resistance | Impermeable |
seven | Pastability in cutting state | ≥ 2.0N/mm or fracture occurs at the joint |
EVA Performance parameters of waterproof board
S/N | Specifications project | index |
one | Tensile strength Mpa | ≥14 |
two | Breaking tensile rate% | ≥400 |
three | Right angle tearing strength N/mm | ≥50 |
four | Carbon black content% | ≥2 |
five | Resistance to environmental stress cracking F20. h | - |
six | Oxidation induction time at 200 ℃ min | - |
seven | Water vapor permeability coefficient g.cm (cm/s/) | ≤1.0×10 -16 |
eight | -70 ℃ low temperature impact embrittlement property | adopt |
nine | Dimensional stability% | ±3 |
