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How to change the fiber properties of composite spun fibers

source：www.03559659.cn  |  Release time：2025-04-08
Composite spun fibers change their properties in various ways, mainly including the following aspects:
1. Combining the characteristics of different polymers: Composite spun fibers are composed of two or more polymers with different properties. For example, by combining high-strength polyester with soft polyamide, the fibers can have both the high strength of polyester and the soft feel of polyamide, thereby improving the mechanical properties of the fibers and giving them both good strength and flexibility.
2. Adjusting the microstructure of fibers: By changing the process parameters of composite spinning and the distribution of different components, the microstructure of fibers can be regulated. If the sea island composite spinning process is adopted, the "island" phase polymer is uniformly dispersed in small particles in the "sea" phase polymer, forming a special microstructure that can increase the specific surface area of the fibers and make them have better adsorption and dyeing properties.
3. Changing the surface properties of fibers: Using skin core composite spinning to form a specific skin structure on the fiber surface. If hydrophilic polymers are used for the cortex, such as a layer of hydrophilic polyvinyl alcohol composite on the surface of hydrophobic polypropylene fibers, the moisture absorption and anti-static properties of the fibers can be significantly improved, and the wearing comfort of the fibers can be improved. At the same time, the special surface structure can also reduce the friction coefficient of the fiber surface, giving the fiber a better smooth feel.
4. endowing fibers with special properties: selecting polymers with special properties for composite can enable fibers to obtain corresponding special properties. For example, by combining polymers with antibacterial properties with conventional fiber materials, composite spun fibers with antibacterial properties can be produced, which can be used in fields such as medical and home textiles to effectively prevent bacterial growth and improve the hygiene and safety of products. In addition, by combining polymers with photochromic and electrochromic functions, fibers can also be endowed with intelligent response characteristics.

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