What are the characteristics of tarpaulin products?

What are the characteristics of tarpaulin? Tent and tarpaulin products provide protection from rain, heat and cold. Therefore, such products are required to have certain properties. (1) Basic performance requirements of tarpaulins Considering the various uses of tarpaulins, the general requirements are: (1) Light weight, easy to fold, easy to carry and operate; (2) High strength, wear resistance, and long service life; ( 3) Good waterproof and breathable performance, no condensation inside; (4) Acid and alkali resistance, mildew resistance, corrosion resistance; (5) Good weather resistance, flame retardancy and fire resistance; (6) No wicking effect, no Moisture transfer phenomenon. Tarpaulins usually require 'three defenses' functions. Namely, waterproof, fireproof (flame retardant) and mildew proof. (2) Main performance indicators In the design or use of a specific product, the following performance indicators of the tarpaulin should be considered. 1. Breathability: The breathability of tarpaulins needs to be considered, especially for military tents. Factors affecting breathability include base fabric structure, density, material, type of waterproof finish and resin adhesion. The air permeability of the tarpaulin decreases as the resin adhesion increases. Of course, this has to do with the finish used. Typically, most breathable tents are made of cotton, vinylon, lacquer, and other short-woven fabrics that are finished with paraffin or acrylic. Tent tarpaulin 2. Tensile strength: The tarpaulin needs to withstand various tensions during use, for example, it will be tensioned when it is tightened: during use, it will withstand additional forces such as wind, rain and savings. Despite these external forces, they are required to maintain their original shape and not easily deform. This requires the tarpaulin to have high tensile strength, and the tensile strength in the warp and weft directions should not be too different. Especially the tensile strength of large tents used as inflatable constructions is very important. Typically, the base fabric is made of high-strength polyester, vinylon, and other long-fiber fabrics. It is waterproof and finished with vinyl chloride resin and chlorosulfonated polyethylene resin. The strength of the product mainly depends on the strength of the fiber material and the density of the fabric. 3. Elongation and dimensional stability: As an eaves tent and a large tent, it is often used under tension. The fabric should not stretch too much and its dimensional stability depends on the creep properties of the material. 4. Tear strength: The damage of the tarpaulin is mainly caused by tearing, so the tear strength is an important sign of the tarpaulin. Tear strength is related to whether the tarpaulin will rupture due to the action of flying foreign objects or for some reason expand into the surrounding environment after forming a hole to form a large structural crack. Therefore, when the tension is high. Not only high tensile strength, but also high tear strength is required. 5. Water resistance: Water resistance is an important feature of tarpaulins. Through impregnation and finishing, vinyl chloride fat is filled in the interstices of the fabric to form a coating film. Water resistance is not a problem if the resin adhesion amount per unit area exceeds a certain level. If the coating film is thin, it can easily crack when bending, rubbing, or wearing the surface, which can lead to muddy water. 6. Flame retardancy: Starting from the safety of use, the tarpaulin is required to have good flame retardancy. Flame retardancy can be achieved by selecting flame retardant fibers and flame retardant base fabrics. It can also be achieved by adding flame retardants to the paint. The amount of flame retardant added is directly related to the flame retardant effect. In addition to the above performance requirements, tarpaulins also require excellent cold resistance, heat resistance, tarpaulin, creep resistance, repeated fatigue resistance, abrasion resistance and bending resistance.

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