At present, outdoor umbrellas are used as conventional fabrics, mainly polyester fabrics. Polyester is an important variety in synthetic fiber and is the trade name of polyester fiber in China. Polyester can be used as a conventional fabric for outdoor umbrellas because it has the following seven essential characteristics:
First, the intensity is high. The impact strength is 4 times higher than nylon and 20 times higher than viscose;
Second, the flexibility is good. The elasticity is close to that of wool, and when it is stretched by 5% to 6%, it can be almost completely recovered. The resistance is superior to other fibers, the fabric is not wrinkled, and the dimensional stability is good. The elasticity is 2-3 times higher than that of nylon. As an outdoor umbrella that is often used in the courtyard, when you don't have the sun, you want to turn it off. If you want to open it, you can't open it without wrinkling; if you take it out, you won't wrinkle it;
Third, the heat resistance is good. In the summer, it is a great pleasure to be able to enjoy the natural atmosphere while breathing under the umbrella of your own garden.
Fourth, good water absorption. Outdoor umbrellas can be placed outdoors for a long time because it is not afraid of rain and can shelter from the wind;
Fifth, good wear resistance. Wear resistance is second only to nylon with the best wear resistance, better than other natural and synthetic fibers;
Sixth, light resistance is good. It can withstand strong sunlight and can play a good role in shading;
Seventh, corrosion resistance. It is resistant to bleaches, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. Resistant to dilute alkali, not afraid of mildew, but hot alkali can decompose it. This is both simple and convenient for washing outdoor umbrella cloth;
Eighth, the dyeability is poor. Due to its inherent shortcomings, it can't satisfy all customers' choices about color hobbies. Although the colors can't be made in different colors, at least the dozens of conventional colors can still meet the needs of ordinary people. I believe that in the era of advanced technology in the future. The dyeing performance of polyester can definitely be greatly improved.
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