China is currently the world’s largest chemical fiber producer and exporter, and occupies an important position in the global chemical fiber industry chain.
The chemical fiber industry undertakes the upstream petrochemical industry and the downstream textile and garment related industries. At the same time, affected by the fluctuation of raw material price and macroeconomic prosperity, it shows an upward trend as a whole.
The chemical fiber industry has entered a relatively mature development stage, and has gradually formed a large-scale and large-scale industry pattern. The optimization, greening and differentiation of industrial structure have become the new development direction of the industry.
The concentration of chemical fiber industry is relatively high. Leading enterprises can continue to expand production capacity by taking advantage of volume and industrial chain.
Definition, classification, main varieties and naming rules of chemical fibers
Chemical fiber, also known as chemical fiber, refers to the fiber with textile properties prepared from natural or synthetic polymer compounds through the processes of preparation of spinning stock solution, spinning and post-treatment.
Based on raw materials, chemical fiber can be divided into man-made fiber and synthetic fiber. Man made fiber takes wood, bamboo, pulp, waste cotton yarn and other materials containing natural cellulose as raw materials and synthesizes organic polymer compounds after addition polymerization or polycondensation reaction. The products include viscose staple fiber, viscose filament and acetic acid filament; Synthetic fiber is a high molecular polymer synthesized by complex chemical reaction with oil, natural gas and coal as raw materials. Common products include polyester, nylon, acrylic and spandex.
According to the morphological and structural characteristics, chemical fibers are divided into filament and staple fibers. Filament is a spinning fluid. After spinning, forming and post-processing, it is a fiber category with a length of kilometers, which can be subdivided into monofilament, twisted filament, double twisted filament, cord filament and deformed filament. The length of short fiber products is distributed between a few centimeters and tens of centimeters. According to their length, they can be subdivided into cotton type, wool type and medium length short fibers.
In addition, chemical fibers can also be classified into melt spinning fibers and solution spinning fibers according to fiber manufacturing methods; According to the composition of single fiber, it is classified into single component fiber and multi-component fiber; According to the difference of fiber properties, it is divided into differentiated fiber, functional fiber and high-performance fiber.
Naming rules of chemical fibers: the short fibers of man-made fibers are all called “fiber”, and the short fibers of synthetic fibers are all called “Lun”. If it is a long fiber, add “silk” or “filament” at the end of the name.
