100% polyester fabric has poor air permeability, but it can be worn in winter (not in plateau). Civil fabrics, airtight, should be treated with special technology, otherwise it is easy to pilling. The fabric is high density, high spinning and high twisting, so don't worry about it pilling easily. ) We often make autumn and winter clothes, and mesh polyester is relatively breathable, which originally existed to reduce costs.
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Clothes will wrinkle when washed, unless you wash them by machine. Polyester fabric is quite stiff and won't wrinkle too much. Worsted wool will wrinkle when it meets water, not to mention polyester, which will be fine.
Polyester fiber is polyester.
1. Characteristics of polyester fiber
Strength: The strength of polyester fiber is nearly 1 times higher than that of cotton and three times higher than that of wool, so polyester fabric is strong and durable.
Heat resistance: it can be used at 70 ~ 170℃, which is the best heat resistance and thermal stability among synthetic fibers.
Elasticity: The elasticity of polyester is close to wool, and its wrinkle resistance is superior to other fibers. This kind of fabric does not wrinkle and has good shape retention.
Abrasion resistance: The abrasion resistance of polyester is second only to that of nylon, ranking second among synthetic fibers.
Water absorption: Polyester has low water absorption and moisture regain and good insulation performance, but due to low water absorption, static electricity generated by friction is large and dyeing performance is poor.
Selection and purchase
Knitted polyester fabric is a kind of chemical fiber fabric. The purchase of this fabric should be carried out from the following aspects. Look at jingwei. Knitted polyester fabrics include warp knitted fabrics and weft knitted fabrics. Although both are made of hot polyester.
Setting or resin treatment, but its extensibility and other properties are still different. Therefore, different styles of clothing should buy fabrics with different properties, because weft-knitted fabrics are often interwoven with yarns of various colors or patterns, which is especially suitable for making exquisite women's tops with different styles; Warp-knitted fabrics should be used for lower garments, such as trousers and skirts. Pants made of warp-knitted polyester fabric have a crisp appearance, compact structure, good wear resistance, less pilling and reeling, and the appearance fullness, elasticity and aesthetics of warp-knitted fabric are worse than those of weft-knitted fabric, so knitted polyester warp-knitted fabric is suitable for pants and skirts.
Look at the grade
Knitted polyester fabrics are divided into first-class, second-class, third-class and inferior products according to quality. From all aspects of fabric, the quality of first-class knitted polyester fabric is naturally superior to other grades of products.
Look at the appearance
Fabric appearance is closely related to fabric structure. Therefore, when selecting knitwear, we should also carefully observe whether the weave is basic or changing, whether the gap between loops is loose or tight, and whether the feel is soft or hard; What is the luster, color and pattern of the fabric? When pulling the fabric with both hands, look at its longitudinal or transverse elasticity and extensibility, whether it is easy to deform, etc. In short, it is necessary to observe whether the fabric meets the basic requirements of the clothing style, so as to achieve the effect of consistent and coordinated appearance of the fabric and clothing style.
Look at defects
There are many appearance defects in knitted polyester fabric, and serious defects will affect the wearing effect. Such as missing needles, holes, missing silk, snagging silk, broken ends, high silk tension, serious weft deviation and so on. Lighter defects, such as oil silk, thick silk, splicing silk, scar, flower color, color difference, curling, bad edge, reflection, etc. Although the fabric with slight defects can be worn, it affects the grade of the fabric. In short, when buying knitted polyester fabrics, the fewer defects on the fabrics, the better. Apart from being unqualified, there must be no serious defects that affect wearing. In addition, if consumers buy knitted polyester jackets, they should also observe the sewing quality. Whether the thread is firm, whether the seam is fine, whether the eye of the needle is too large, etc. Generally speaking, it is better to sew knitted polyester coat with 1 1 needle. If the needle is too thick, it is easy to destroy the coil and cause pinhole, which will affect the quality of knitted polyester jacket.
Edit this paragraph of dyeing
When dyeing at high temperature and high pressure, the dyeing process of disperse dyes on polyester fiber can be divided into the following stages: polyester
(1) disperse dyes gradually approach the fiber interface with the flow of dye solution. At this stage, the nature and state of disperse dyes are basically irrelevant. Both dissolved dye molecules and suspended dye particles flow with the dye solution, and the transfer speed depends on the flow rate of the solution. (2) Because there is a dynamic boundary layer on the fiber surface that is not easy to flow, when disperse dyes enter the dynamic boundary layer and approach the fiber interface, they mainly diffuse to the fiber by themselves. The transfer speed at this stage is not only related to the solution speed, but also related to the diffusion speed of disperse dyes. Therefore, the diffusion speed of dissolved dye molecules is much faster than that of suspensions and aggregates, and the solubility and dispersion state of dispersed dyes have great influence on the transfer speed at this stage. (3) When the molecular force between disperse dyes near the fiber interface is large enough, the disperse dyes will be quickly adsorbed on the fiber surface. The transfer speed at this stage is mainly determined by the structure and properties of fiber and dye molecules, and also related to the properties of interfacial solution. Among them, the solubility and dispersion state of dyes have great influence. The higher the solubility of dye, the greater the interaction between dye molecules and fibers, and the faster the adsorption speed. (4) After the disperse dyes are adsorbed on the fiber surface, there will be concentration difference or chemical potential difference between the dyes inside and outside the fiber, and the dyes will diffuse into the fiber. The diffusion rate here is mainly determined by fiber chemistry and microstructure, and also related to the molecular structure and concentration of dyes. The fiber has high amorphous region content, large pores or large free volume content, high dye solubility and fast diffusion speed. Therefore, the dye diffusion rate at this stage is directly related to the swelling or plasticizing degree of the fiber and the concentration of dispersed dyes in the fiber. The higher the degree of swelling or plasticization, the higher the concentration of disperse dyes in the outer layer of fiber and the faster the diffusion. As can be seen from the above, the dyeing speed depends not only on the structure of dyes and fibers, but also on the solubility of dyes in solution and the swelling or plasticizing degree of fibers during dyeing. Polyester fiber is a hydrophobic synthetic fiber. The molecular structure of polyester fiber lacks active groups that can combine with dyes, such as cellulose or protein fiber. Polyester molecules are closely arranged, and there are only small gaps in the fiber. When the temperature is low, the molecular thermal motion changes its position slightly. Under wet conditions, polyester fiber does not expand the gap like cotton fiber, so it is difficult for dye molecules to penetrate into the fiber. Therefore, improving the plasticization degree of fiber will help dyeing. In addition, the solubility of disperse dyes in water is very low, and the dyes in the dye solution are suspended and dispersed in the dye bath by a large number of dispersants. When dyeing polyester fiber, in order to achieve better dyeing effect, it is usually necessary to add a certain amount of dyeing auxiliaries. These dyeing auxiliaries have many functions in the dyeing process, mainly including: (1) appropriately increasing the solubility of disperse dyes; (2) promoting the adsorption of disperse dyes on the fiber surface; (3) plasticizing the fiber or increasing the swelling degree to accelerate the diffusion speed of disperse dyes in the fiber; (4) Improving the dispersion stability of dyes. Generally, auxiliaries for high-pressure dyeing of polyester fibers include carriers for plasticizing fibers, surfactants for dissolving disperse dyes or stabilizing dye suspensions, and the like. Dyeing auxiliary polyester fiber plays a very important role.
Edit this paragraph to repeat dyeing.
Polyester fiber and filament fabric have strong hydrophobicity, and the usual dyes and dyeing methods can hardly be dyed, so they can only be dyed with disperse dyes. But the whole dyeing process can only be completed at high temperature and high pressure.
Edit this application.
Polyester is widely used in making clothes and industrial products. Flame-retardant polyester is widely used because of its long-lasting flame retardancy. In addition to playing an irreplaceable role in industrial textiles, building interiors and vehicle interiors, it has also played a lot of roles in the field of protective clothing. According to the national standard of flame retardant protective clothing, metallurgical, forestry, chemical, petroleum, fire and other departments should use flame retardant protective clothing. There are more than one million people who should use flame-retardant protective clothing in China, and the market potential of flame-retardant protective clothing is huge. In addition to pure flame retardant polyester, we can also produce multi-functional products such as flame retardant, waterproof, oil repellent and antistatic according to the special requirements of users. If the flame retardant polyester fabric is treated with waterproof and oil repellent finishing, the functionality of flame retardant clothing can be improved; Anti-static flame retardant fabric is made by interweaving flame retardant polyester with conductive fiber. Blending and interweaving flame-retardant fibers with high-performance fibers can produce high-performance flame-retardant fabrics. Flame-retardant fibers are blended with cotton, viscose and other fibers to improve the comfort of protective clothing and reduce secondary burns.
In this section, the development of polyester industry in China is edited.
Polyester is the largest and most widely used synthetic fiber variety in the world. At present, polyester accounts for more than 60% of the world's synthetic fiber production. Widely used in clothing, bedding, various decorative fabrics, special fabrics for national defense and military industry, and other industrial fiber products, such as filter materials, insulation materials, tire cords, conveyor belts, etc. In recent years, with the sustained and rapid growth of domestic economy and the continuous improvement of domestic residents' consumption power, the demand for polyester staple fiber in domestic areas is also increasing. The production capacity of polyester series products in China is increasing at an alarming rate, and the rapid growth of polyester fiber production capacity makes China gradually develop into an important polyester product processing base in the world. In June 2007 +0- 1 1, the total industrial output value of China polyester fiber manufacturing industry reached 242,668.873 million yuan, up 22.56% year-on-year; Cumulative product sales revenue was 236,465,438+03,8065,438+0,000 yuan, up 265,438+0.65% year-on-year; The accumulated total profit was 4,987,999,000 yuan, up by 665,438+0.15% year-on-year. From June to May, 2008, the total industrial output value of China polyester fiber manufacturing industry was104924069,000 yuan, up by 8.72% year-on-year. Accumulated product sales revenue of 10 1 0,674,710,000 yuan, up by10.82% year-on-year; The total accumulated profit was 65,438+0,495,65,438+0.29 thousand yuan, a decrease of 65,438+09.96% compared with the same period of last year. Polyester fiber is the most processed chemical fiber variety among all textile fibers. It is very important to develop differentiated varieties, improve the added value of products and improve the economic benefits of enterprises. Product differentiation is the development direction of polyester fiber, and Chinese polyester fiber manufacturers are also developing in this direction. Therefore, the polyester industry still has great development potential.