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CN-122013499-A - Preparation process of graphene fabric blended antibacterial fabric

CN122013499ACN 122013499 ACN122013499 ACN 122013499ACN-122013499-A

Abstract

The invention provides a preparation process of graphene fabric blending antibacterial fabric, which comprises the steps of blending nano graphene powder with polyester chips, preparing graphene composite chips through double-screw melt extrusion, preparing graphene embedded polyester fiber yarns through melt spinning of the composite chips, weaving or knitting the yarns to form fabric grey cloth, sequentially performing scouring, dyeing, water washing and pre-shaping treatment, sending the pre-treated fabric into a spectrum irradiation device, performing uniform irradiation treatment under the condition of infrared-visible light composite wave bands, and then performing low-temperature drying and shaping finishing to obtain the graphene fabric blending antibacterial fabric. According to the invention, the graphene material is added in the polyester slicing stage and the graphene embedded composite fiber is formed through melt spinning, so that the graphene is uniformly distributed in the fiber internal structure, and the antibacterial function is independent of the fabric surface finishing layer, so that stable antibacterial performance can be maintained under the conditions of repeated washing or long-term use.

Inventors

  • JIN YANCHAO

Assignees

  • 苏州凌际纺织科技有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (9)

  1. 1. The preparation process of the graphene fabric blended antibacterial fabric is characterized by comprising the following steps of: S1, selecting terylene slices for spinning, adding nano graphene powder according to a preset weight ratio after drying and impurity removal pretreatment, carrying out uniform blending and dispersion by high-speed mixing equipment, and carrying out double-screw melt extrusion granulation to obtain terylene composite slices with uniformly dispersed graphene; S2, carrying out secondary drying and dehydration on the graphene and polyester composite slice, then sending the graphene and polyester composite slice into melt spinning equipment, and carrying out the processes of melting, screw extrusion, spinning forming, drafting orientation, heat setting and winding to obtain graphene embedded polyester fiber yarns, so that graphene is uniformly distributed in a fiber internal structure, and a composite fiber with an antibacterial function is formed; S3, weaving or knitting the graphene polyester yarns to prepare fabric grey cloth, and sequentially performing scouring, dyeing, water washing and pre-shaping treatment on the grey cloth to remove sizing agent and impurities, so as to obtain a pre-treated fabric with stable structure; S4, sending the pretreated fabric into a spectrum irradiation treatment device, carrying out uniform irradiation treatment on the fabric under the condition of infrared-visible light composite wave band, and promoting activation of graphene microstructure inside the fiber and energy transfer through spectrum energy coupling action, so as to improve antibacterial activity and action efficiency of graphene in the fiber; S5, drying, shaping and finishing the fabric subjected to the spectrum irradiation treatment at a low temperature to obtain a graphene blended antibacterial fabric finished product with long-acting antibacterial performance.
  2. 2. The preparation process according to claim 1, wherein the nano graphene powder in the step S1 is a multi-layer graphene material, the number of layers is not more than 10, and the particle size is nano-scale; The weight adding proportion of the graphene powder to the polyester chips is 1% -5%.
  3. 3. The preparation process according to claim 1, wherein the blending in the step S1 is completed by a high-speed stirring mixer, the mixing speed is 800-1200 r/min, the mixing time is 20-40 min, and the twin-screw melt extrusion temperature is controlled to be 270-290 ℃.
  4. 4. The preparation process according to claim 1, wherein the temperature of the melt spinning section in the step S2 is controlled to be 260-310 ℃, the spinning draft is 2.5-3.5 times, and the winding speed is controlled according to the conventional spinning process parameters of polyester.
  5. 5. The process according to claim 1, wherein the fabric is woven in a plain weave, twill weave or weft knit structure in step S3.
  6. 6. The preparation process according to claim 1, wherein the dyeing in the step S3 is performed by using a disperse dye at a high temperature of 110-130 ℃ and rinsing with clear water after dyeing to remove the flooding and residual dye.
  7. 7. The preparation process according to claim 1, wherein the spectrum irradiation in the step S4 is infrared-visible light composite spectrum irradiation, and the irradiation wavelength range is 500-2500 nm.
  8. 8. The preparation process according to claim 7, wherein in the step S4, the fabric passes through the irradiation cavity at a constant speed through the crawler conveyor mechanism, the transmission speed is 0.5-1.5 m/min, the temperature in the irradiation cavity is controlled to be 40-60 ℃, and the irradiation time is 15-30 min.
  9. 9. The process according to claim 1, wherein the low-temperature setting treatment temperature in the step S5 is 120-140 ℃, the drying time is 5-10 min, and the setting pressure is 0.2-0.4 MPa.

Description

Preparation process of graphene fabric blended antibacterial fabric Technical Field The invention relates to the technical field of textile fabric production, in particular to a preparation process of graphene fabric blended antibacterial fabric. Background In the technical field of textile fabrics, in order to improve the hygienic property and the use safety of the fabric, an antibacterial function is generally introduced into the fabric. The conventional antibacterial fabric is mainly finished by chemical antibacterial auxiliary agents, wherein silver ion antibacterial technology is a common technical scheme. The technology generally leads silver ion antibacterial agents to be introduced on the surfaces of fibers or fabrics, so that the silver ion antibacterial agents release antibacterial active substances in the use process, thereby inhibiting bacterial reproduction. However, the antibacterial finishing mode generally depends on the adhesion of antibacterial components on the surface of the fabric, the antibacterial components are easy to migrate or fall off in the long-term use or repeated washing process, so that the antibacterial performance is gradually reduced, the stable and durable antibacterial effect is difficult to realize, and meanwhile, the compatibility of part of antibacterial auxiliary agents in a dyeing and finishing system is complex, and the processing stability of the fabric is possibly influenced. In recent years, graphene has been tried to be applied to antibacterial textile materials because of certain physical antibacterial properties. In the prior art, graphene is mainly introduced into the fabric through a graphene yarn weaving or graphene coating printing mode. However, the former has certain limitation in terms of fiber materials and processing suitability, while the latter distributes graphene on the surface layer of the fabric, so that a stable structure is difficult to form in the fiber, thereby affecting the stability and uniformity of the antibacterial effect; therefore, a preparation process of graphene fabric blended antibacterial fabric is provided. Disclosure of Invention In view of the above, the invention provides a preparation process of graphene fabric blended antibacterial fabric, which solves or alleviates the technical problems existing in the prior art, and at least provides a beneficial choice. The technical scheme of the invention is realized in that the preparation process of the graphene fabric blended antibacterial fabric comprises the following steps: step S1, preparing graphene and polyester composite slices: The preparation method comprises the steps of selecting a special clean polyester slice for spinning as a base raw material, firstly carrying out drying impurity removal pretreatment on the polyester slice, removing moisture, dust and mechanical impurities in the raw material, avoiding the problems of agglomeration and yarn breakage in subsequent processing, adding nano graphene powder into the pretreated polyester slice according to a preset weight ratio, fully blending and dispersing the two raw materials by adopting high-speed mixing equipment, ensuring that the graphene powder is uniformly distributed in a polyester slice gap without local agglomeration and layering phenomenon, sending the blended mixture into a double-screw extruder, carrying out melting, extrusion and granulating, and finally obtaining the polyester composite slice with uniformly dispersed graphene by virtue of melting, blending and granulating, laying a raw material foundation for subsequent spinning, and ensuring the uniform distribution of graphene in fibers from the source. Step S2, preparing graphene embedded blended yarns: And (3) carrying out secondary drying and dehydration on the graphene polyester composite slice prepared in the step (S1), thoroughly removing residual moisture in the slice, preventing air bubbles and broken filaments in the spinning process, sending the dried composite slice into professional melt spinning equipment, sequentially completing the whole set of spinning procedures of melt plasticization, screw extrusion, spinning forming, drafting orientation, heat setting and winding, and accurately controlling parameters such as spinning temperature, drafting multiple, winding speed and the like to prepare the graphene embedded polyester fiber yarn. According to the method, graphene is directly embedded into the internal structure of the polyester fiber through a slice spinning process, and is not only attached to the surface of the fiber, so that the yarn has basic antibacterial performance, and meanwhile, the original physical and mechanical properties of the polyester fiber are reserved, so that the method is suitable for various weaving process requirements. Step S3, fabric weaving and pretreatment: The graphene and polyester blended yarn prepared by the S2 is adopted, any one of plain weave, twill weave and weft knitting is selected for weaving a