What is the chemical fiber production process? What is chemical fiber used for

The production process of flower skewers is divided into: slicing - fuse - spinning - sizing - desizing - weaving - dyeing - post-treatment - inspection.

Chemical fiber is a fiber with textile properties prepared by using natural polymer compounds or synthetic polymer compounds as raw materials, through the preparation of spinning stock solution, spinning and post-treatment.

The length, thickness, whiteness, gloss and other properties of the fiber can be adjusted during the production process. And they have the advantages of lightfastness, wear-resistant, easy to wash and dry, no mildew, and no moth. It is widely used in the manufacture of clothing fabrics, filter cloths, conveyor belts, water hoses, ropes, fishing nets, electrical insulating wires, medical sutures, tire cord fabrics and parachutes, etc.

Generally, polymer compounds can be made into solutions or melts, pressed out of the pores of the spinneret, and then coagulated into fibers. The product can be continuous filaments, short fibers cut to length, or uncut tows, etc. The trade name of chemical fibers is temporarily stipulated in China that synthetic staple fibers are all named "fiber" (e.g., nylon, polyester), cellulose staple fibers are all called "fiber" (e.g., viscose, cupro), and filament is added with the word "silk" at the end, or "fiber" and "fiber" are changed to "silk".

There are generally two methods for the production of synthetic chemical fibers, one is melt spinning, and the other is solution spinning. The general process of polyester melt spinning and slice spinning is like this, which is the typical method of melt spinning, and other melt spinning is similar to this.

Slicing - fuse - spinning - sizing - desizing - weaving - dyeing - post-treatment - inspection.

That's pretty much it.

When it comes to chemical fiber, there may be many friends who are not very clear, so today we will take a look at what chemical fiber is. It generally refers to chemical fibers. According to relevant personnel, chemical fibers use natural polymer compounds as their raw materials.

After that, it is made into a fiber with textile properties after the preparation of spinning stock solution, spinning and subsequent processing. When it comes to fiber, its length is not the same. Some are thicker, some are thinner.

Its glossiness and whiteness can be adjusted during the production process. It has many advantages, such as not rotting, its lightfastness, abrasion resistance and not being eaten by insects.

What are the uses of chemical fibers.

In fact, optical fiber is still widely used in our daily life. Let's take a look at the uses of optical fibers. Optical fibers are generally used to make clothing, filter cloth, and conveyor belts or tires, window cloths, or ropes.

Some are also used in fishing nets, some are also used in electrical insulated wires, medical sutures and so on. According to the relevant personnel, polymer compounds can generally be made into deep liquid or melt, etc., pressed out of this spinneret pores, and then coagulated to form the fiber we know. According to the relevant personnel, this kind of product can be a continuous filament type, and then cut into the length we want, or the situation of uncut tows, etc.

Introduction to the influence of synthetic clothing.

As we have introduced earlier, what is chemical fiber, what is the production process of chemical fiber, and what are the uses of chemical fiber. It has been said above that chemical fiber can be used as a fabric for clothes to make clothes, so is chemical fiber clothing good or bad for our human body? Today, we will find out with the professionals.

Professionals said that the hygroscopicity of chemical fiber clothes is still relatively poor, it is easy to cause our allergies, it is better for our human body than cotton clothes.

After research, we found that polypropylene and this chlorine wheel are generally not hygroscopic, and the moisture absorption rate of nitrile wheel is generally about 40% of cotton. Another because this chemical fiber clothing itself does not have an effective moisture absorption and moisture dissipation function, so sweat will gather on the surface of the body, and the various ingredients contained in the sweat will cause allergies to our ** surface, which is easy for us to have ** allergies or allergic dermatitis.

For what chemical fiber is, the use of chemical fiber, and some of the effects of chemical fiber clothing on our human body are introduced, I hope these will help us. After reading the above content, we also have a further understanding of chemical fiber, in our daily life, we can see the benefits of chemical fiber everywhere. If you still have any questions about chemical fiber, you can also get in touch with more content about chemical fiber and understand its characteristics in more detail.

The full name of chemical fiber is chemical fiber, which refers to the fiber made of natural or synthetic polymer substances. According to the different raw materials, it can be divided into man-made fibers with natural polymer substances as raw materials and synthetic fibers with synthetic polymer substances as raw materials.

The preparation of chemical fibers is usually made into a spinning melt or solution from natural or synthetic polymer substances or inorganic substances, and then filtered, measured, extruded into a liquid stream by a spinneret (plate), and then solidified into fibers. At this time, the fiber is called primary fiber, its mechanical properties are very poor, and it must go through a series of post-processing processes to meet the requirements of textile processing and use. Post-processing mainly focuses on stretching and heat setting of fibers to improve the mechanical properties and dimensional stability of fibers.

Stretching is the orientation of macromolecules or structural units in primary fibers along the fiber axis; Heat setting is mainly to relax the internal stress in the fiber. The post-processing of wet-spun fibers also includes washing, oiling, drying and other processes. When spinning filament, it can be wound into a cylinder through the above process; When spinning staple fibers, it is necessary to add processes such as crimping, cutting and baling.

Man-made fibers mainly include viscose fibers and nitric acid.

Ester fiber, acetate fiber, cupra fiber and artificial protein fiber, among which viscose fiber is divided into ordinary viscose fiber.

and new viscose fibers with outstanding properties (such as high wet modulus fibers, super viscose fibers and permanent crimped viscose fibers, etc.).

Synthetic fibers mainly include polyamide 6 fibers (called nylon or nylon 6 in China, polyacrylonitrile fibers.

In China, it is called acrylic fiber, polyester fiber.

Polyester in China), polypropylene fiber (polypropylene in China), polyvinyl formaldehyde fiber (vinylon in China) and special fibers (including corrosion-resistant fibers made of tetrafluoroethylene polymerization, high-temperature resistant fibers with temperatures of more than 200 meters, high-strength, high-modulus fibers with strength greater than 10 grams denier and modulus greater than 200 grams of denier, as well as flame-retardant fibers, elastomer fibers, functional fibers, etc.). In the 50s of the 20th century, the modification of synthetic fibers was carried out, mainly by physical or chemical methods to improve the properties of synthetic fibers such as moisture absorption, dyeing, antistatic, anti-combustion, anti-fouling, anti-pilling, etc., and also increased the varieties of chemical fibers.

Chemical fiber is a fiber synthesized by chemical methods, chemical fiber is easy to produce static electricity when rubbed, and the water absorption capacity is extremely poor, of course, it is not suitable for underwear, such as spandex. Wearing chemical fiber underwear has a pinprick feeling when sweating. Pure cotton is a pure natural fabric, and the underwear made is relatively comfortable to wear.

Production process. 1.Slice spinning:

2.Melt Spinning:

Terephthalic acid + ethylene glycol Ethylene terephthalate (five-kettle polymerization or three-kettle polymerization) Melt filtration Pressurization Cooling Five-way valve Melt distribution pipe Spinning box Metering pump Component Side blow Tanker Pre-network Polyester POY tensioner Feed roller 1st heater False twister 2nd hot box 3rd roller Winding roller Polyester DTY

Introduction to Synthetic Fibers.

Synthetic fiber is a synthetic linear polymer with suitable molecular weight and soluble (or fusible) properties, which is spun and formed and post-processed. These polymers with fibroforming properties are often referred to as fibroforming polymers.

Compared with natural fibers and man-made fibers, the raw materials of synthetic fibers are prepared by synthetic methods, and the production is not limited by natural conditions. In addition to the general superior properties of chemical fibers, such as high strength, light weight, easy to wash and dry quickly, good elasticity, and not afraid of mold, synthetic fibers of different varieties have some unique properties.

Functional classification. 1. High-temperature resistant fibers, such as polybendazole fibers;

2. High-temperature corrosion-resistant fibers, such as PTFE;

3. High-strength fibers, such as polyterephthalyl p-phenylenediamine;

4. Radiation-resistant fibers, such as polyimide fibers;

5. In addition, there are flame retardant fibers, polymer optical fibers, etc.

The clothes we wear are made of various different kinds of fabrics, and the fabrics are spun from fibers, and the types of fibers used in weaving are different types of fabrics. We all know that there are several categories of clothes, such as cotton, satin, chemical fiber, etc., and the traditional clothing fabrics are cotton, linen or other natural fiber cloths, but with the continuous development of the chemical industry, a variety of chemical fibers have appeared one after another, making the fabrics of our clothes more and more abundant. The earliest chemical fiber fabric is called polyester, and the appearance of this chemical fiber fabric has been greatly improved, and compared with ordinary fabric clothes, the appearance of chemical fiber fabric clothes is more beautiful.

So how are chemical fibers made? What kind of craftsmanship does it have? The following rabbit will introduce chemical fibers and their manufacturing processes.

First, about chemical fibers.

The so-called chemical fiber is one of the main types of man-made fibers, which are made of natural polymer compounds or synthetic polymer compounds as raw materials through a series of manufacturing processes. The length, thickness, gloss, and color of natural fibers are natural and difficult to make big changes, while chemical fibers can be changed by some adjustments in the production process.

2. The manufacturing process and characteristics of different types of chemical fibers.

The manufacturing process of all chemical fibers is very similar, that is, it includes the preparation of spinning solution or melt, spinning and post-processing. Below I will give you a brief introduction to the production process of some common chemical fibers:

1. Regenerated fiber, it is the closest to the chemical fiber of Tianmao Jinran, including two categories of regenerated cellulose fiber and rich and strong fiber, which are made of cellulose and protein and other compounds as raw materials, and then made into a spinning solution through a certain chemical process, and finally spun and processed into finished fiber.

2. Synthetic fiber, it is a veritable man-made fiber, including polyester, cotton, chlorine, spandex, vinylon, etc., which are all made of synthetic polymer compounds, which is in stark contrast to recycled fibers.

3. One of the most critical processes in the production process of chemical fibers is spinning, and according to the different processes of spinning, chemical fibers can be divided into several types, such as filament, staple fiber, heterosexual fiber, composite fiber, and textured silk.

Different kinds of chemical fibers, their characteristics and uses are different, for example, recycled fibers have the advantages of good luster, high strength, soft texture, easy dyeing, good moisture absorption and air permeability, excellent elasticity, etc., therefore, it is widely used in the garment manufacturing industry, clothes made of man-made fibers, not only beautiful appearance, high comfort, and clothes are durable.