What are the functions of tarpaulins? -- Guangyuan Ruifeng New Materials

Category: Tarpaulin

Release Time: 2020-05-20

Summary: A tent is mainly composed of two parts: an aluminum alloy main frame and a tarpaulin. Tarpaulin products can provide protection from rain, heat, and cold, so they require certain special properties. Sailute will tell you what essential properties tarpaulins must have.

Tents are mainly composed of two parts: an aluminum alloy main frame and a tarpaulin. Tarpaulin products can provide protection from rain, heat, and cold, so they require certain special properties. Selter will tell you what essential properties tarpaulins must have? (Crosslinking agent used in PE tarpaulin)

I. Basic Performance Requirements of Tarpaulins

Considering the various uses of tarpaulins, the general requirements are: 1. Lightweight, easy to fold and transport; 2. High strength, wear-resistant, and long service life; 3. Good waterproof and breathable performance, with anti-condensation on the inside; 4. Acid and alkali resistant, mildew-proof, and corrosion-resistant; 5. Good weather resistance, flame retardant, and fire-resistant; 6. No wicking effect, no moisture conduction. Tarpaulins generally require "three-proof" functions: waterproof, fireproof (flame retardant), and mildew-proof. (Crosslinking agent used in PE tarpaulin)

II. Main Performance Indicators

When designing or using products, the following performance indicators of tarpaulins should be considered.

1. Breathability

The breathability of tarpaulins must be considered, especially for military tent tarpaulins. Factors affecting breathability include the base fabric structure, density, material, type of waterproof finishing agent, and resin adhesion. As the resin adhesion increases, the breathability of the tarpaulin decreases. Of course, this is related to the finishing agent used. Tarpaulins with breathability are mostly made of cotton, vinylon, and dacron short-staple fiber fabrics treated with paraffin or acrylonitrile resin. (Crosslinking agent used in PE tarpaulin)

2. Tensile Strength

Tarpaulins are subjected to various tensions during use, such as tension during fixing; and additional forces from wind, rain, and snow during use. Despite these external forces, they are still required to maintain their original shape and not easily deform, which requires the tarpaulin to have high tensile strength and not have too much difference in warp and weft tensile strength. The tensile strength is extremely important, especially for large-scale inflatable buildings. The base fabric generally uses high-strength polyester, vinylon, and other long-fiber fabrics. Waterproof finishing is done with polyvinyl chloride resin and chlorosulfonated polyethylene resin. The strength of the product is mainly determined by the strength of the fiber material and the fabric density. (Crosslinking agent used in PE tarpaulin)

3. Elongation and Dimensional Stability

For awnings and large tents, fabrics used under tension should not have too much elongation, and their dimensional stability is determined by the creep characteristics of the material. (Crosslinking agent used in PE tarpaulin)

4. Tear Strength

Tarpaulin damage is mainly caused by tearing, so tear strength is an important indicator for tarpaulins. Tear strength is related to whether the tarpaulin will rupture due to flying objects or expand around a hole formed for some reason, resulting in large-scale structural tearing. Therefore, when the tension is large, both high tensile strength and high tear strength are required. (Crosslinking agent used in PE tarpaulin)

5. Water Resistance

Water resistance is an important characteristic of tarpaulins. Through impregnation finishing, polyvinyl chloride resin is filled in the gaps of the fabric structure to form a coating. If the amount of resin adhesion per unit area exceeds a certain level, water resistance is not a problem. If the coating is thin and subjected to bending, rubbing, or surface wear, the coating may crack, causing mud and water to seep through. (Crosslinking agent used in PE tarpaulin)

6. Flame Retardancy

From the perspective of safety, tarpaulins are required to have good flame retardancy. Flame retardancy can be achieved by selecting flame-retardant fibers and flame-retardant base fabrics, or by adding flame retardants to the coating agent. The amount of flame retardant added is directly related to the flame retardant effect. (Crosslinking agent used in PE tarpaulin)

In addition to the above performance requirements, tarpaulins are also required to have excellent cold resistance, heat resistance, creep resistance, repeated fatigue resistance, wear resistance, and bending resistance.

Keywords: What are the functions of tarpaulins? -- Guangyuan Ruifeng New Materials

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