First, the concept and characteristics of rayon
1 What is rayon?
1. Rayon is a common name for viscose fibers. Viscose fibers refer to α-cellulose extracted from cellulosic materials such as wood and vegetable straws, or man-made fibers made from cotton linters that have been processed into a spinning solution and then wet-spun.
2 rayon characteristics
The characteristics of rayon are good dyeability, high vividness and fastness, comfortable wear, resistance to dilute alkali, moisture absorption close to cotton. The disadvantages are poor acid resistance, poor resilience and fatigue resistance, and low wet mechanical strength. It can be purely spun or blended with chemical fibers such as polyester.
Second, the concept and characteristics of cotton
1 What is cotton?
Pure cotton fabric is made of cotton as raw material, through the loom, textiles made of warp and weft yarns interweaved with each other vertically and horizontally. At present, according to the actual processing of cotton sources, it is divided into primary cotton fabrics and recycled cotton fabrics.
2 Cotton Features
1). Cotton fibers have good hygroscopicity
Under normal circumstances, cotton fibers can absorb moisture in the surrounding atmosphere, the moisture content is 8% -10%, so when the human body's skin touch, feel soft and comfortable. If the humidity of the cotton fiber increases and the ambient temperature is high, the moisture of the cotton fiber will evaporate. Maintaining the level of the cotton fabric also makes people feel comfortable.
2). Good heat resistance of cotton fabric
At the same time, when the temperature is 110 degrees Celsius, it will only cause moisture on the fabric to evaporate without damaging the fiber. Therefore, the cotton fiber is used at room temperature at room temperature, and washing does not affect the fabric. In this regard, its heat resistance also improves the durability of the cotton fabric.
3). Cotton fiber has strong resistance to alkali
In the alkaline solution, the cotton fiber does not break down, reflecting the alkali resistance of the cotton fiber. It therefore facilitates the use of contaminated washing and disinfecting impurities after use.
4). Cotton fiber also shows hygiene
Cotton fiber is a natural fiber, its main component is natural element and a small amount of waxy substance and nitrogenous substance, pectin, after testing and practice, cotton fiber and skin contact without any irritation and side effects, long-term use is beneficial to human body and harmless Its sanitary performance is good.
Three, rayon and cotton eight different methods
The appearance of the rayon cloth resembles that of a cotton cloth, and the method of distinguishing it mainly proceeds from the following points:
1. Finishing
Man-made cotton cloth, smooth fabric, very few yarn defects, no impurities, fine and smooth; cotton surface can be seen on the cotton shell, impurities, etc., finish is not as good as artificial cotton cloth.
2. Yarn evenness
The rayon bars of rayon cloth are even and the yam is scarce, while the cotton sliver branch is not as uniform as the rayon, especially in the coarse cotton.
Feel
Regardless of thick fabrics, rayon cloths are mostly soft, while cotton fabrics are slightly rough.
4. Color
The luster and color of the rayon cloth are good. Compared with the cotton cloth, the rayon cloth is brighter and more beautiful.
5. Creased
The rayon cloth is easy to wrinkle. When the hand is rubbed by a cloth and spread out, many wrinkles appear, and it is not easy to recover in time. Although the wrinkles of the cotton cloth are slight, they are slightly smaller than the rayon.
6. Drapability
Artificial cotton drapability is better, cotton drape than rayon cloth.
7. Strong
The strength of rayon cloth is lower, not as good as that of cotton, especially in wet conditions. The fastness of rayon is poor. When drawing from the edge of the fabric, stretching, rayon breaks more easily than cotton, therefore, the rayon texture is mostly Thick, light and thin as pure cotton yarn.
8. Burning
The rayon is close to the flame and burns rapidly. It appears as if we burned black plastic and curled plastic. The lower the cotton content, the stronger the texture is; the cotton is close to the flame and does not shrink. Touch the flame and burn quickly. The flame is orange and blue.
Leaving the flames and continuing to burn, the burning paper is less ashy and linear. The ash is soft and light gray, and the hand touches the powder easily.
For more content, please follow this site
Strap on your walking boots, slap on your compass watch and hit the trails! Before you head out on your adventure, make sure you pack the necessities; energy bar, a bottle of water, and of course sunglasses. The frames, we use the plastic material, which will make your experience with it as comfortable, simple and stress-free as possible. Our Man sunglasses with rich material of metal, plastic, TR90 and acetate. Besides, Nickel free plating, non-toxic painting adopted. Styles divided into classic, fashion and sports.
Novel and creative packing supplied.
Plastic Man Sunglasses,Fashion Glasses For Men,Man Summer Plastic Sunglasses,Mens Plastic Polarized Sunglasses
Wenzhou OUCHENG OPTICAL CO., LTD , https://www.ouchengoptical.com