Ethylene-vinyl acetate (EVA), also known as poly (ethylene-vinyl acetate) (PEVA), is the copolymer of ethylene and vinyl acetate. The weight percent of vinyl acetate usually varies from 10 to 40%, with the remainder being ethylene. There are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the materials are used.
EVA waterproof membrane is a kind of flexible sheet material manufactured through a series of processes including shaping, cooling, testing, bundling and packaging, with ethylene vinyl acetate copolymer as the main raw material, mixed with an appropriate amount of modifiers, antioxidants, ultraviolet absorbers, colorants, fillers, plasticizers, etc.
EVA waterproof membrane is featured by excellent resistance to environmental stress cracking, good toughness, weather resistance, low temperature resistance, strong elasticity, resistance to stress cracking, flexibility, high strength, small specific gravity, high elongation, conveninent laying, no displacement, etc. It applies to a variety of underground caves, tunnels, subways, municipal construction and other waterproofing and seepage-proofing works.
| TESTED PROPERTY | TEST METHOD | UNIT ENGLISH METRIC |
VALUE ENGLISH METRIC |
|||
| 30PV | 40PV | 50PV | 60PV | |||
| Thickness | ADTM D 5199 | mil(mm) | 30±1.5（0.76±0.04） | 40±2（1.02±0.05） | 50±2.5（1.27±0.06） | 60±3（1.52±0.08） |
| Tensile properties: Strength at break Elongation Modulus @ 100% |
ASTM D 882 Min | lbs/in(kN/m) % lbs/in(kN/m) |
73(12.8) 380 32（5.6） |
97(17) 430 40（7.0） |
116(20.3) 430 50（8.8） |
137(24.0) 450 60（10.5） |
| Tear Strength | ASTM D 1004 min | Ib(N) | 8(35) | 10(44) | 13(58) | 15(67) |
| Dimensional Stability | ASTM D1204 Max Chg | % | 3 | 3 | 3 | 3 |
| Low temperature impact | ASTM D 1790 Pass | °F（°C） | -20（-29） | -20（-29） | -20（-29） | -20（-29） |
| INDEX PROPERITIES | ||||||
| Specific Gravity | ASTM D 792 Typical | g/cc | 1.2 | 1.2 | 1.2 | 1.2 |
| Water Extraction %loss(Max) | ASTM D 1239 Max Loss |
% | 0.15 | 0.2 | 0.2 | 0.2 |
| Average Plasticizer Molecular Weight | ASTM D 2124 | 400 | 400 | 400 | 400 | |
| Votatility Loss % loss(Max) | ASTM D 1203 Max Loss | % | 0.7 | 0.5 | 0.5 | 0.5 |
| Soil Burial Break strength Elongation Modulus @ 100% |
G160 max chg | % % % |
5 20 20 |
5 20 20 |
5 20 20 |
5 20 20 |
| Hydrostatic Resistance | ASTM D 751 min | psi(kpa) | 100(690) | 120(830) | 150(1030) | 180（1240） |
| SEAM STRENGTH | ||||||
| Shear Strength | ASTM 882 D min | lbs/in(kN/m) | 58.4(10) | 77.6(14) | 96(17) | 116(20) |
| Peel Strength | ASTM 882 D min | lbs/in(kN/m) | 15(2.6) | 15(2.6) | 15(2.6) | 15(2.6) |
| This data is provided for informational purposes only. Trump ECO makes no warranties as to the suitability or the fitness for a specific use or merchantability of the products referred to. | ||||||
Municipal works: Subway station and subway running tunnel.
Convenient construction, easy welding.
By Yannick Vergoz from Victoria - 2017.02.14 13:19
By Esther from UAE - 2018.10.01 14:14
