Polymer waterproofing membrane is an important waterproof material widely used in fields such as construction, water conservancy, and transportation. The following is a detailed introduction to polymer waterproofing membranes:
1、 Definition and Classification
Polymer waterproofing membrane is a rollable sheet-like waterproofing material made from synthetic rubber, synthetic resin, or a blend of both, with appropriate additives and fillers added, and processed through mixing, rolling, or extrusion processes. According to the different base materials, polymer waterproofing membranes can be divided into various types, such as EPDM rubber waterproofing membranes, PVC waterproofing membranes, chlorinated polyethylene waterproofing membranes, and rubber plastic blended waterproofing membranes.
2、 Main characteristics
1. High tensile strength: The tensile strength of polymer waterproofing membranes is generally above 3MPa, and some products can reach around 10MPa, meeting the practical needs of membrane handling, construction, and application.
2. High tear resistance: The tear resistance is generally above 20KN/m, and the crack resistance is excellent.
3. Good heat resistance: maintains sufficient strength and stability at high temperatures, does not flow, and does not produce concentrated bubbles.
4. Good low-temperature flexibility * *: Maintain sufficient elastic-plastic properties at low temperatures, without brittle fracture, and some products can be used below -45 ℃.
5. Good corrosion resistance: Resistant to the corrosive effects of chemicals such as acid, alkali, and salt.
6. Excellent aging resistance: It has excellent ozone resistance, UV resistance, weather aging resistance, and good durability.
3、 Production process
The production process of polymer waterproofing membrane mainly includes steps such as raw material preparation, mixing, rolling or extrusion molding, vulcanization (required for some products), inspection, rolling and packaging. Among them, extrusion molding and rolling molding are the main molding processes. By controlling the process parameters, polymer waterproofing membranes with excellent performance can be produced.
4、 Application Fields
Polymer waterproofing membranes are widely used in various waterproofing projects, such as roof waterproofing, basement waterproofing, wall waterproofing, pool waterproofing, subway waterproofing, etc. The characteristics of single-layer laying, cold bonding or self-adhesive construction make the construction more convenient and efficient.
5、 Market Status and Development Trends
The Chinese polymer waterproofing membrane industry has a large market demand and fierce market competition. With the promotion and application of new polymer materials and technological innovation, the performance of polymer waterproofing membranes continues to improve, and the application fields are also expanding. In the future, the polymer waterproofing membrane industry will continue to develop towards high quality, high performance, environmental protection and energy conservation.
6、 Precautions
When using polymer waterproofing membranes, the following points should be noted:
1. The grassroots should be flat, dry, and clean, without any looseness, sanding, or peeling.
2. During construction, the product manual and construction process requirements should be followed to ensure construction quality.
3. When storing, avoid direct sunlight and rain, and maintain ventilation and dryness.
4. Regularly inspect and maintain the waterproof layer to ensure its long-term effectiveness.