The main properties of tarpaulin products

When designing or using tarpaulin products in detail, the following properties of tarpaulins should be considered. 1. Air permeability The air permeability of tarpaulins must be considered, especially for military tent fabrics. The factors affecting air permeability include base fabric arrangement, density, material, type of waterproofing agent, and resin adhesion. With the increase of resin adhesion, the air permeability of the tarpaulin decreases. Of course this has to do with the cleaning agent used. Generally, most of the tents with air permeability are made of cotton, vinylon, lacquer and other short fiber fabrics that have been cleaned by paraffin or acrylic resin. 2. Tensile strength The tarpaulin must be subjected to various tensions during use, such as tension when sticking, and additional forces such as wind, rain, and province during use. Despite these external forces, they are still required to maintain their original shape and not easily deformed. 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 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 Tarpaulin is often used under tension as eaves tents and large tents. 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 goal of the tarpaulin. The tear strength is related to whether the tarpaulin will rupture due to the action of flying foreign objects or expand to the surrounding after forming a hole for some reasons, forming a large structural crack. So, when the tension is high. Both high tensile strength and high tear strength are required for the tarpaulin. 5. Water resistance Water resistance is an important feature of the tarpaulin. After dipping and cleaning, the vinyl chloride resin is filled in the gaps of the fabric arrangement to form a coating film. If the resin adhesion amount per unit area exceeds a certain level, water resistance is not 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. 6. Flame retardancy From the perspective of safety in use, the tarpaulin is required to have good flame retardancy. Flame retardancy can be obtained by selecting flame retardant fibers and flame retardant base fabrics. It can also be achieved by adding flame retardant to the coating agent. The amount of flame retardant added is directly related to the flame retardant effect. In addition to the above performance requirements, the tarpaulin also requires excellent cold resistance, heat resistance, tarpaulin, creep resistance, repeated fatigue resistance, abrasion resistance and bending resistance.

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