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.
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Convenient construction, easy welding.
- Excellent toughness, weather resistance, low temperature resistance.
- Independent bubble structure, low surface water absorption rate, and good permeability.
- Corrosion resistance to organic solvents such as acid, alkali, salt, oil, etc.
- Good anti-seepage performance and high barrier property.
| Items | |||
| FS2 | JS2 | ||
| Tensile Strength | Normal temperature(23℃) | 60(N/cm) | 16(MPa) |
| High temperature(60℃) | 30(N/cm) | 6(MPa) | |
| Elongation at break | Normal temperature(23℃) | 400 | 550 |
| Low temperature(-20℃) | 300 | 350 | |
| Tear strength | 50(N) | 60(KN/m) | |
| Impervious(0.3MPa,30min) | No leakage | No leakage | |
| Low temperature bending | -20℃ No crack | -35℃ No crack | |
| Notes: | |||
| Thickness | 30mil(0.8mm),40mil(1.0mm),50mil(1.2mm),60mil(1.5mm),80mil(2.0mm) Customized. | ||
| Roll length | 20m | ||
| Roll Width | 2m | ||
| L ype | Fiber backing coils are suitable for concrete base bonding systems or mechanical fastening systems. | |||||
| P type | Reinforced coil is suitable for mechanical fixed waterproof system. | |||||
| H type | Homogeneous coil is suitable for flooding and fine node processing. | |||||
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Municipal works: Subway station and subway running tunnel.
- Highway: Highway tunnel.
- High-speed railway: High-speed railway running tunnel.
- Industrial and civil building: Waterproofing engineering of basement foundation slab and side wall constructed in the method of external prevention and internal pasting.
