Waterproofing membranes are important materials for construction in the industry. Common grounds, roofs, tunnels, highways and other places. Different places have different waterproof levels, and the waterproof membranes used are not the same. How about waterproof membranes? let's figure it out together.
First, pay attention to the product name and packaging logo
According to product standard regulations, the product packaging should be marked with the company name, product label, production date or batch number, production license number, storage and transportation precautions. The product labeling should be strictly according to the standard, consistent with the product name, and must not be vague. Incomplete or incomplete mark and no production mark. When users select these products, they must pay attention to the product mark and recognize the product name because the mark represents the identity of the product. Example: Polyester-cotton non-woven fabric - mesh fabric composite tire production can only be named as bituminous composite tire flexible waterproof membrane or composite tire membrane, and can not be named SBS membrane, its product mark is also Can only be marked on the compound tire standard.
Second, from the base to identify the quality of the coil
General visual inspection from the product's cross-section, the specific method can be used to tear the product to be hand, observed on the cross-section of the exposed fetal fibers, composite tire tear after the cross-section of the grid ribs exposed, It can be concluded that the product must be a composite tire membrane, what kind of compound tire membrane material need to rely on physical tests - soluble content inspection to observe the exposed tire base. However, only the polyester or glass fiber fibers are exposed after the pure polyester tire and glass fiber tire are torn.
Third, strict quality control from physical properties
From the visual inspection of the appearance, only composite tire membranes can be distinguished, but it fails to solve whether the selected products meet the quality requirements. This requires the user to go to the technical organization with the inspection ability and carry out the soluble content according to the corresponding product standards. The physical properties of the factory items are tested by using soluble content items to control the amount of bitumen and modifiers contained in the products, as well as to reveal the true appearance of the tire base used in the product, and to determine whether it is consistent with the product marking.
Fourth, product price comparison
Waterproof membrane products are highly competitive and counterfeit goods are rampant. Taking the SBS modified bitumen membrane with the largest amount of production in the market as an example, the profits of the company are also better than 15%. There are many ultra-low-cost SBS modified bitumen membranes on the market with little SBS content, and even without SBS, they are replaced with waste rubber powder. Therefore, when buying, pay attention to avoid selecting products that are significantly lower than the market price.
The main waterproof material for waterproofing membranes is a waterproof membrane composed of asphalt and macromolecules. It is also mainly divided into bitumen waterproof membranes and macromolecular waterproof membranes.
1. Asphalt waterproofing membrane can be mainly divided into ordinary asphalt, paper tar felt, oxidized asphalt, oxidized asphalt felt and other waterproofing membranes.
2. Synthetic polymer coils can be divided into rubber, resin, and self-adhesive coils. They are EPDM, chlorinated polyethylene rubber and plastic (CPE), and chlorine. Polyethylene Coil (CPE), Reinforced Polyvinyl Chloride Coil (630), Thermoplastic Polyolefin (TPO), Polyvinyl Chloride Coil (PVC) Waterproof Coil, Polyethylene Polypropylene Coil, EVA Coil, High-density polyethylene web (HDPE), EPDM self-adhesive web, EVA self-adhered web, HDPE waterproof webs, high-polymer pre-rolled anti-adhesive webs, etc.
3, modified bitumen membrane is a polymer modified coil type It is divided into hot-melt self-adhesive type SBS rubber modified bituminous membrane, APP (APAO) modified bituminous membrane, modified plastic powder Asphalt membranes, pvc modified tar asphalt membranes, modified bitumen tire (OEE) membranes, etc.