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CN-121976322-A - Preparation method of antibacterial thermal fiber and application of antibacterial thermal fiber in fabric

CN121976322ACN 121976322 ACN121976322 ACN 121976322ACN-121976322-A

Abstract

The invention relates to functional fibers and preparation thereof, in particular to a preparation method of an antibacterial thermal fiber, which comprises an outer skin part and a core part completely covered by the skin part. The method of the invention not only successfully prepares the antibacterial thermal insulation fiber with the thermal regulation function, but also has stable fiber structure, strong functionality and long service life. By precisely controlling the various steps in the preparation process, in particular the preparation of the core fiber, the preparation of the sheath material, the coating and the shaping steps, the fiber is ensured to have excellent thermal regulation performance.

Inventors

  • TANG GONGZHENG
  • LU FUTONG
  • WANG XIAOYUN
  • ZHOU XIAOJUN

Assignees

  • 烟台北方家用纺织品有限公司

Dates

Publication Date
20260505
Application Date
20260320

Claims (7)

  1. 1. The preparation method of the antibacterial thermal fiber comprises an outer skin part and a core part completely covered by the skin part, and is characterized by comprising the following steps: 1. passing the core fiber through a hydrodynamic sheath material, coating the sheath material on the core fiber; 2. Repeating the first step for 2-20 times; 3. And (5) shaping.
  2. 2. The method according to claim 1, wherein the skin material is one of PA, PVC, PAN and PET, and the core material is one of PE, PP and PA, and a PCM material is added.
  3. 3. The method of claim 2, wherein the skin portion is 5% -90% by weight and the core portion is 10% -95% by weight.
  4. 4. The method according to claim 3, wherein in the first step, the weight ratio of the PCM material in the core is 1% -25%.
  5. 5. The method according to claim 4, wherein in the second step, the raw materials of the sheath in the flow state through which the core fiber passes each time are the same or different.
  6. 6. The preparation method according to any one of claims 1 to 5, comprising the steps of: 1) Preparation of core fibers Uniformly mixing PCM master batch and master batch of core fiber according to a proportion, and melt spinning to prepare core fiber; 2) Preparation of a hydrodynamic leather Material Melting leather raw materials or transferring the leather raw materials into a plurality of sizing tanks after the leather raw materials are dissolved by a solvent, sequentially arranging holes with gradually increased diameters between every two sizing tanks, and arranging a drying pipe behind each hole; 3) Coating Sequentially passing the fibers obtained in the step 1) through the sizing tank in the step 2) and then passing through the holes and the drying pipes; 4) Shaping And (3) shaping the fiber coated in the step (3) under the condition of constant temperature and constant humidity.
  7. 7. The method of claim 6, wherein the method is applied to a fabric.

Description

Preparation method of antibacterial thermal fiber and application of antibacterial thermal fiber in fabric Technical Field The invention relates to functional fibers and preparation thereof, in particular to a preparation method of antibacterial thermal fibers. Background The chemical fiber is one of important raw materials of textile products such as clothes, and compared with the natural fiber, the chemical fiber has the advantages of good performance stability, wide sources, long service life and the like. Because the raw materials of the chemical fiber have high purity, the function of the chemical fiber is single, and a plurality of fibers are commonly mixed or functional components are added into the fibers, so that the fabric has a plurality of composite performances. For example, nanometer titanium dioxide is added into polyamide fiber to prepare nylon cloth with ultraviolet absorption. Although the functional component is added to bring the property to the fiber, the functional component and the fiber main body material are not well compatible due to the difference in material quality, and even some granular added components can form stress concentration points to reduce the mechanical property of the fiber. In addition, certain additive components limit the addition of these components because they are not suitable for contact with the skin or for exposure to air. The fiber of the sheath-core structure is a composite fiber and consists of a sheath part and an inner core part of an outer layer, wherein the core part can be completely covered by the sheath part or can be partially exposed, the sheath part is usually a component of a fiber main body, and various functional components can be added into the core part. The fiber surface of the sheath-core structure retains the function of the host fiber while the various functional components added to the core provide additional properties to the fiber. However, the fiber with the sheath-core structure also has the problems of interfacial compatibility and inconsistent deformation caused by the difference of materials of the sheath part and the core part, and the mechanical properties of the fiber are affected. The existing equipment for preparing the sheath-core structure adopts a melt spinning method, melts of the sheath part and the core part simultaneously pass through a hollow annular spinneret plate, and the core part melt and the sheath part melt are cooled into filaments after being spun by the spinneret plate. . Disclosure of Invention Aiming at the problems that the mechanical properties of the fiber are reduced due to the difference between the skin part and the core part of the fiber with the existing skin-core structure and the problems that the equipment and the process requirements are high and the types of the prepared fiber are limited in the existing preparation method of the fiber with the skin-core structure, the invention provides a preparation method of an antibacterial thermal fiber, which comprises an outer skin part and a core part completely covered by the skin part, and the preparation method comprises the following steps: 1. passing the core fiber through a hydrodynamic sheath material, coating the sheath material on the core fiber; 2. Repeating the first step for 2-20 times; 3. And (5) shaping. Specifically, the leather raw material is one of PA, PVC, PAN or PET, the core raw material is one of PE, PP or PA, and the PCM material is added. Wherein, PA has excellent wear resistance and elasticity, PVC has good chemical corrosion resistance and insulation, PAN has high modulus and high strength, and PET has good heat resistance and ageing resistance. The choice of these materials allows the leather to have different performance characteristics depending on the particular needs. In the core raw material, PE has excellent flexibility and low temperature resistance, PP has higher rigidity and heat resistance, and PA can also be used as the core raw material to provide additional strength. In particular, the PCM added in the core can absorb and release heat, realize temperature regulation in a specific temperature range, endow the fiber with a thermal regulation function, and is suitable for the fields of intelligent textiles and temperature control materials. Further, the leather weight ratio is 5% -90%, the core weight ratio is 10% -95%, and the weight ratio of the PCM material in the core is 1% -25%. The weight ratio of the leather part to the core part can be adjusted according to actual requirements so as to realize optimal performance balance. For example, when higher wear resistance and elasticity are required, the proportion of PA in the skin material may be appropriately increased, and the duty ratio of the core material may be adjusted accordingly. Conversely, if higher flexibility and low temperature resistance are sought, the PE duty cycle in the core can be increased. The weight ratio of the PCM material in the core pa