Understanding of PVC and Asphalt Waterproof Rolls
PVC waterproofing membrane, also known as polyester fiber reinforced polyvinyl chloride (PVC) waterproofing membrane, is a thermoplastic PVC membrane that uses polyester fiber fabric as reinforcement ribs. Through a special extrusion coating process, the double-sided PVC plastic layer and the middle polyester reinforcement ribs are combined to form a polymer membrane. The membrane has good dimensional stability and a low coefficient of thermal expansion.
Polyester fiber reinforced polyvinyl chloride (PVC) waterproofing membrane is a thermoplastic PVC membrane that uses polyester fiber fabric as reinforcement ribs. Through a special extrusion coating process, the double-sided polyvinyl chloride SBS waterproofing membrane ethylene plastic layer and the middle polyester reinforcement rib are combined to form a polymer membrane. The advanced formula of polyvinyl chloride plastic layer is combined with the network structure of polyester fiber fabric to provide the membrane with good dimensional stability and low thermal expansion coefficient, improving the long-term performance of the membrane when directly exposed to the natural environment. The construction method is hot air welding to ensure the effectiveness of the weld seam.
1. PVC waterproofing membrane has high tensile strength, good elongation, and small thermal size change rate.
2. It has good weldability, and the joint is integrated with the base material after hot air welding.
3. It has good water vapor diffusion, and the condensate is easy to release. The moisture left in the base PVC waterproof membrane layer is easy to discharge.
4. Resistant to aging, UV radiation, chemical corrosion, and root penetration.
5. It has good flexibility at low temperatures (-20 ℃).
6. Long service life (25 years on the roof and over 50 years underground), and no environmental pollution.
7. The surface of the color reflects ultraviolet radiation, and the surface of the PVC waterproof membrane absorbs less heat and has a low temperature.
8. Excellent flexibility and stretchability, high tensile strength, excellent dimensional stability, high mechanical strength, corrosion resistance, root penetration resistance, weather resistance, UV resistance, hail resistance.
Asphalt waterproofing membrane is a rollable waterproof material made by impregnating the body of raw paper, fiber fabric, fiber felt and other materials with asphalt, and then applying powdered, granular or sheet-like materials on the surface. Common types include petroleum asphalt paper tire felt, petroleum asphalt glass cloth felt, petroleum asphalt fiberglass tire felt, petroleum asphalt hemp cloth tire felt, etc.
The representative type of asphalt waterproofing membrane is petroleum asphalt paper tire felt, which is made by impregnating the base paper with low softening point petroleum asphalt, then covering both sides of the oil paper with high softening point petroleum asphalt, and sprinkling isolation material. The felt is divided into three grades: 200, 350, and 500 according to the weight of 1 square meter of the base paper, and is classified into qualified, first-class, and high-quality polymer self-adhesive film waterproofing membrane according to its physical properties. Among them, the 200 grade felt is suitable for simple waterproofing, temporary building waterproofing, moisture-proof, and packaging, while the 350 and 500 grade felt are suitable for multi-layer building waterproofing.
Performance.
1. Water resistance.
Water resistance refers to the property that remains basically unchanged under the action of water and after being immersed in water, and has impermeability under pressure water. It is commonly expressed by indicators such as impermeability and water absorption.
2. Temperature stability.
Temperature stability refers to the ability of liquid coils to maintain their original properties under certain temperature changes, without flowing, foaming, sliding, or brittle cracking at high temperatures. It is commonly used to represent liquid coils based on indicators such as heat resistance and heat resistance.
3. Mechanical strength, elongation, and fracture resistance.
It refers to the performance of waterproofing membrane that can withstand certain loads, stresses, or under certain deformation conditions without breaking, commonly expressed by indicators such as tensile strength, tensile strength, and elongation at break.
4. Flexibility.
Flexibility refers to the ability to maintain flexibility under low temperature conditions, which is crucial for ensuring ease of construction and preventing brittle cracking. Commonly used indicators include flexibility and low-temperature bending.
5. Atmospheric stability.
Atmospheric stability refers to the ability to resist erosion under the long-term comprehensive effects of factors such as sunlight, heat, ozone, and other chemical erosion media. It is commonly expressed by indicators such as aging resistance and thermal aging retention rate.
Shandong Wanhe Waterproof Materials Co., Ltd. is a professional waterproof system supplier that integrates scientific research and development, production, sales, and construction services. It is a source manufacturer with quality assurance and price details. Please call 18263660598 for more information http://www.whfscl.com/ .
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