PVC Tarpaulin Long Service Life
Jun 12, 2017
The basic performance requirements of PVC tarpaulin
From the various uses of PVC tarpaulins, the general requirements to be met are:
(1) light weight, easy to fold, easy handling;
(2) high strength, wear resistance, long service life;
(3) waterproof performance and breathable performance, PVC Tarpaulin the side of the anti-condensing water;
(4) acid and alkali, mildew, anti-corrosion;
(5) good weather resistance, flame retardant, fire;
(6) no wicking effect, there will be no wetting phenomenon.
PVC tarpaulins generally require a "three anti" function. Waterproof, fire (flame retardant), mildew.
Key performance indicators
In the specific product design or use, to consider the following characteristics of PVC tarpaulin.
1, breathability: PVC tarpaulin must consider its permeability, PVC Tarpaulin especially the military tarpaulin cloth, air permeability of the factors such as the end of cloth tissue, density, materials, waterproof finishing agent species, resin adhesion and so on. With the increase in resin adhesion, PVC tarpaulin air permeability decreased. Of course this is related to the finishing agent used. Generally have the permeability of the canopy most of the paraffin or acrylic resin finishing the cotton, vinylon, lacquer and other short-cut fabric products.
2, tensile strength: PVC tarpaulin in the use of all the tension to bear, such as the tension when the tension to be tension; use the process to be wind, rain, the province and other additional force role. PVC Tarpaulin Despite these external forces, they are still required to maintain the original shape, not easily deformed, which requires PVC tarpaulins have a high tensile strength, and should not have too much latitude and longitude to the tensile strength difference. Especially as inflatable building with a large tent tension strength is extremely important. Generally its base fabric with high-strength polyester, vinylon and other long fiber fabric. The vinyl chloride resin, PVC Tarpaulin chlorosulfonylated polyethylene resin waterproof finishing. The strength of the product is mainly determined by the strength of the fibrous material and the density of the fabric.
3, elongated skin and dimensional stability: as the roof canopy and large tents, PVC Tarpaulin is often used under tension. Fabric elongation should not be too large, the dimensional stability of the material is determined by the creep characteristics.
4, tear strength: PVC tarpaulin damage caused by the main tear, so tear strength is an important indicator of PVC tarpaulin. Tear strength is related to whether the PVC tarpaulin will rupture due to the role of flying objects or for some reason in the formation of holes after the expansion of the surrounding, the formation of large structures crack. So when the tension is big. Both require a high tensile strength of the canopy cloth, PVC Tarpaulin but also requires it to have a high tear strength.
5, water resistance: water resistance is an important feature of PVC tarpaulin, through the impregnation finishing, the vinyl chloride filled with fabric in the gap between the fabric to form a coating. If the amount of resin adhesion per unit area over a certain degree, water resistance is not a problem. If the coating is thin, by bending, soft rub or surface wear, the coating is easy to break, it may cause muddy water.
6, flame retardant: from the use of the safety of the mountain, requiring PVC tarpaulin has a good flame retardant. Flame retardancy can be obtained by selecting flame retardant fibers and flame retardant base cloth, PVC Tarpaulin or by adding flame retardant to the coating agent. The addition of flame retardants has a direct relationship with the flame retardant effect.
PVC tarpaulin in addition to the performance requirements of several, but also requires excellent cold resistance, heat resistance, canopy cloth, creep resistance, anti-fatigue, wear resistance and bending resistance and so on.
