What are the properties of the tarpaulin

The tent is mainly composed of two parts, one is the aluminum alloy main frame, and the other is the tarpaulin. Tent, tarpaulin products can play the role of rain, heat, cold and so on. Therefore, such products are required to have certain performance. 1. The basic performance requirements of Zhongshan tarpaulin are considered from the various uses of the tarpaulin. Generally, the requirements that should be met are (1) light weight, easy to fold, easy to handle and operate, high strength, wear resistance and long service life (3) waterproof Good performance and air permeability, anti-condensation on the inner side (4) acid and alkali resistance, mildew resistance, anti-corrosion (5) good weather resistance, flame retardant and fire resistance (6) no wicking effect, no moisture conduction phenomenon. Tarpaulins are generally required to have 'three defenses' functions. Namely waterproof, fireproof (flame retardant), mildew proof. 2. Main performance indicators In the specific product design or use, the following performance indicators of the tarpaulin should be considered. Air permeability: The air permeability of tarpaulins must be considered, especially for military tent fabrics. The factors affecting air permeability include base fabric organization, density, material, type of waterproof finishing agent, and resin adhesion. With the increase of resin adhesion, the air permeability of plastic tarpaulin decreases. Of course this depends on the finishing agent used. Generally, most of the tents with air permeability are made of cotton, vinylon, lacquer and other short fiber fabrics finished with paraffin or acrylic resin. In particular, the tensile strength of large tents used as inflatable buildings is extremely important. Generally, the base fabric is made of high-strength polyester, vinylon and other long-fiber fabrics. Waterproof finishing with vinyl chloride resin and chlorosulfonated polyethylene resin. The strength of the product is mainly determined by the strength of the fiber material and the density of the fabric. 3. Elongation skin and dimensional stability: As a canopy tent and a large tent, it is often used under tension. The elongation of the fabric should not be too large, and its dimensional stability is determined by the creep characteristics of the material. 4. Tear strength: The damage of the tarpaulin is mainly caused by tearing, so the tear strength is an important indicator of the tarpaulin. The tear strength is related to whether the tarpaulin will break due to the action of flying foreign objects or expand to the surrounding after forming holes for some reasons, forming large structural cracks. So, when the tension is high. Both high tensile strength and high tear strength are required for the tarpaulin. Water resistance: Water resistance is an important feature of tarpaulins. By dipping and finishing, the vinyl chloride fat is filled in the gaps of the fabric to form a coating film. If the resin adhesion amount per unit area exceeds a certain level, water resistance will not be a problem. If the coating film is thin, when it is bent, rubbed or worn on the surface, the coating film is easily broken, which may cause muddy water.
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