English Views: 6 Author: Site Editor Publish Time: 2022-10-03 Origin: Site
① Hygroscopicity: Cotton fiber has good hygroscopicity. Under normal conditions, the fiber can absorb moisture from the surrounding atmosphere, and its moisture content is 8-10%. Therefore, it touches human skin and makes people feel soft and soft. Not stiff. If the humidity of the cotton cloth increases and the surrounding temperature is higher, all the moisture contained in the fiber will evaporate, so that the fabric can maintain a water balance and make people feel comfortable.
② Moisture retention: Because cotton fiber is a poor conductor of heat and electricity, its thermal conductivity is extremely low, and because cotton fiber itself has the advantages of porosity and high elasticity, a large amount of air can accumulate between the fibers, and air is a poor conductor of heat and electricity. Therefore, pure cotton fiber textiles have good moisture retention, and people feel warm when wearing pure cotton clothing.
③ Heat resistance: Pure cotton fabric has good heat resistance. When the temperature is below 110°C, it will only cause the moisture on the fabric to evaporate and will not damage the fiber. Therefore, the pure cotton fabric has no effect on the fabric under normal temperature, wear, use, washing, printing and dyeing. Influence, thereby improving the washability and durability of cotton fabrics.
④ Alkali resistance: cotton fiber has a high resistance to alkali. The cotton fiber will not be damaged in the alkali solution. This performance is conducive to the washing of pollution after consumption, disinfection and removal of impurities, and it can also be used for pure cotton textiles. Dyeing, printing and various processes are carried out to produce more new varieties of cotton weaving.
⑤ Hygiene: Cotton fiber is a natural fiber, its main component is cellulose, and a small amount of waxy substances, nitrogenous substances and pectin. The pure cotton fabric has been tested and practiced in many ways, and the fabric has no irritation or negative effect in contact with the skin. It is beneficial and harmless to the human body when worn for a long time, and has good hygienic properties.
Cotton is pure cotton. The 100% cotton fabric feels very soft and comfortable to the touch. Polyester cotton is a mixture of polyester and cotton, and it feels less comfortable than cotton. Dress and not as good as cotton sucker. Various fabrics woven from polyester staple fiber and cotton fiber blended yarn are commonly known as cotton.
Polyester is the largest variety with the highest output among synthetic fibers. Polyester has many trade names, "Polyester" is our country's trade name. The chemical name is polyethylene terephthalate, which is usually formed by the polymerization of chemicals, so the scientific name often carries "poly". Polyester is also called polyester. Structure and performance: The structure shape is determined by the spinneret hole. The cross-section of conventional polyester is round and has no cavity. Changing the cross-sectional shape of the fiber can produce special-shaped fibers. Improve brightness and cohesion. Fiber macromolecules have high crystallinity and high orientation, so the fiber has high strength (20 times that of viscose fiber) and good abrasion resistance. Good elasticity, not easy to wrinkle, stiff and good shape retention, good light resistance and heat resistance, quick-drying after washing, no ironing, good wash and wear performance. Polyester is a chemical fiber fabric, which is not easy to wick away perspiration. It feels thorny to the touch, it is easy to generate static electricity, and it looks bright when tilted.
1. Visual recognition method:
A. 100% cotton: more fluff, poor surface finish
B. Polyester cotton: relatively less fluff, good surface finish, and a certain luster.
2. Combustion method:
A. 100% cotton: it burns immediately near flame, burns paper ignorantly, has less ash, soft black ash.
B. Polyester cotton: near flame shrinkage, dripping, foaming, weak fragrance, hard light brown
The advantages of cotton are sweat-absorbing, breathable, soft and warm, and anti-sensitivity, but the disadvantages are easy to shrink and deform! It is very good to add part of polyester to cotton clothes nowadays, and how cheap are the pure-faced clothes now. Clothes with polyester or spandex are more expensive. Adding polyester will make up for the shortcomings of cotton.
Polyamide/cotton is more wear-resistant than polyester/cotton, and under the same composition ratio, the former feels stiffer.
Nylon/cotton: It is made of nylon yarn and pure cotton yarn interwoven on an air-jet loom. It is an ideal material for making casual wear and fashion. The specifications are plain weave, twill weave, matt, square root and other series. The cloth surface is bright and shiny, and the hand feels smooth and full. It is mostly suitable for windbreakers, cotton clothes, jackets and other styles.
Fine cotton: refers to combed cotton
Polyester: It is an important variety of synthetic fibers and the trade name of polyester fiber in my country. It is a fiber-forming polymer made from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) through esterification or transesterification and polycondensation reaction— —Polyethylene terephthalate (PET), a fiber made by spinning and post-processing.
Polyester cotton: refers to the general name of blended fabrics of polyester and cotton, commonly known as cotton.
Chemical fiber: Chemical fiber fabric is a new type of clothing developed in modern times, with many types. Here mainly refers to the pure spinning, blending or interlaced fabric processed by chemical fiber, that is to say, the fabric woven from purified fiber, excluding the blending and interlacing with natural fiber, the characteristics of chemical fiber fabric are woven into it. The characteristics of chemical fiber itself are determined.
