Waterproof membrane is mainly used for building walls, roofs, as well as tunnels, highways, landfills, etc., to resist the external rain, groundwater leakage can be curled into a roll of flexible building materials, as the basis for engineering And no leakage between the building connection, the entire project is the first waterproof barrier, the entire project plays a vital role. The main products are asphalt waterproofing membrane and polymer waterproofing membrane
The asphalt or polymer waterproof material impregnated in the carcass, made of waterproof material products, in the form of coil, known as waterproofing membrane. According to the main composition of different materials, divided into asphalt waterproofing membrane, high polymer modified asphalt waterproofing membrane and synthetic polymer waterproofing membrane; according to the different carcass are divided into no carcass membrane, paper coil, glass fiber Tire Coil, Glass Fabric Coil and Polyethylene Tire Coil.
Waterproof membrane requirements have good water resistance, stability of the temperature change (high temperature does not flow, no blistering, not confuse; low temperature does not brittle crack), a certain mechanical strength, extensibility and resistance to fracture, to There is a certain degree of flexibility and anti-aging and so on.
The waterproofing membrane is a curlable sheet-like waterproofing material. Is one of the important varieties of waterproofing materials in construction engineering.
According to its main waterproof composition material can be divided into asphalt waterproof material, high polymer modified waterproof membrane and synthetic polymer waterproofing membrane (SBC120 polyethylene polypropylene composite membrane) three categories. There are PVC, EVA, PE, ECB and other waterproofing membrane
Asphalt waterproofing membrane is in the base tire (such as base paper, fibrous fabric) dip on asphalt, and then spread in the surface of powder or sheet of the isolation material made of curled sheet waterproof material.
1. Water resistance
Water resistance refers to the role of water and water infiltration after its performance is basically the same, under the action of pressure water is impermeable, commonly used impermeability, water absorption and other indicators.
2. Temperature stability
Temperature stability refers to the high temperature does not flow, no blistering, no sliding, low temperature does not brittle performance, that is, under certain temperature changes to maintain the original performance. Commonly used heat resistance, heat resistance and other indicators that.
3. Mechanical strength, extensibility and resistance to fracture
It refers to the waterproof membrane to withstand a certain load, stress or deformation under certain conditions do not break the performance. Commonly used tension, tensile strength and elongation at break and other indicators that.
Flexibility refers to the ability to maintain flexibility at low temperatures. It is easy to ensure that the construction, not brittle is very important. Commonly used flexibility, low temperature bending and other indicators that.
5. Atmospheric stability
Atmospheric stability refers to the ability to resist erosion under long-term effects of factors such as sunlight, heat, ozone and other chemical attack media. Commonly used anti-aging, thermal aging retention rate and other indicators that.