CN-122013395-A - High-wear-resistance moisture power generation core spun yarn and preparation method and application thereof

CN122013395ACN 122013395 ACN122013395 ACN 122013395ACN-122013395-A

Abstract

The application relates to the technical field of spinning, and discloses a high-wear-resistance moisture power generation core spun yarn and a preparation method and application thereof. The core spun yarn consists of an inner electrode, an electricity generating layer and an outer electrode, wherein the inner electrode is silver-plated filament, metal wire or carbon fiber, the electricity generating layer is moisture absorption modified cotton fiber, wool fiber, viscose fiber or bamboo pulp fiber, and the outer electrode is a perforated conductive non-woven fabric strip. The preparation method comprises the steps of coating the surface of the inner electrode with the power generation layer through friction spinning, and coating the surface of the power generation layer with the outer electrode by using a wire coating machine to form a three-layer coated layered structure. According to the application, the conductive non-woven fabric is used as the outer electrode, so that the wear resistance of the yarn is greatly improved, the fiber is used as the power generation layer, the specific surface area of the power generation layer is increased, the moisture absorption power generation performance is enhanced, the moisture generation core spun yarn with good wear resistance, stable electrode medium and high moisture absorption power generation power is obtained, and the flexible wearable energy field requirement is adapted.

Inventors

TANG WENYANG
XU WEILIN
WANG JIAXI
Fu chiyu
LIU PING
CHEN XIAOYU
YUAN GUOSHU
CHEN SHUANGTING
LIU YONG
XIA ZHIGANG

Assignees

武汉纺织大学
山东圣润纺织有限公司

Dates

Publication Date: 20260512
Application Date: 20260331

Claims (10)

1. The high-wear-resistance moisture power generation core spun yarn is characterized by comprising an inner electrode, a power generation layer and an outer electrode, wherein the inner electrode is positioned on a yarn core layer, the power generation layer is positioned on a yarn middle layer, and the outer electrode is positioned on a yarn cortex; The inner electrode comprises any one of silver-plated filaments, metal wires or carbon fibers; the power generation layer is made of moisture absorption modified cotton fibers; The outer electrode is a conductive non-woven fabric strip with a perforated surface.
2. The high abrasion-resistant moisture power generation core spun yarn of claim 1 wherein the core spun yarn layer structure has a core layer thickness of 5-80 μm, an intermediate layer thickness of 30-200 μm and a skin layer thickness of 50-400 μm.
3. The highly abrasion-resistant moisture-activated core spun yarn of claim 1 wherein the power generation layer further comprises any one of wool, viscose and bamboo pulp fibers.
4. The high abrasion-resistant moisture power generation core spun yarn of claim 1, wherein the width of the conductive non-woven fabric strip is 1-2 cm, the perforation density is 5-20 pieces/cm 2 , and the aperture is 0.5-2 mm.
5. The preparation method of the high wear-resistant wet gas power generation core spun yarn is characterized by comprising the following steps of: And then, the composite core yarn is put on a yarn coating machine, and the outer electrode is coated on the surface of the composite core yarn to obtain the high wear-resistant moisture power generation core-spun yarn.
6. The method for preparing the high abrasion-resistant moisture power generation core spun yarn of claim 5, wherein the method for preparing the moisture absorption modified cotton fiber comprises the following steps: Soaking cotton fibers in 10wt% NaOH solution for 5-10 min, taking out the cotton fibers, soaking the cotton fibers in 10wt% ethanol solution for 5-10 min, and finally drying the cotton fibers at 70-80 ℃ for 5-10 min to obtain wax-removed cotton fibers; Mixing 10wt% PVA solution and 30wt% PSSA solution, stirring for 10-20 min at a stirring speed of 500-1000 rpm to obtain a pretreatment agent, soaking the wax-removed cotton fibers in the pretreatment agent for 15-30 min, taking out the cotton fibers and drying to obtain the moisture-absorbing modified cotton fibers.
7. The preparation method of the high abrasion-resistant moisture power generation core spun yarn of claim 6, wherein the mass ratio of 10wt% PVA solution to 30wt% PSSA solution is (5-10): (15-30).
8. The method for preparing the high-abrasion-resistance moisture power generation core spun yarn according to claim 5, wherein spinning parameters of the friction spinning machine are that the core yarn tension is 1-10 cN, the yarn output speed is 5-20 m/min, the cotton fiber feeding speed is 0.3-1 m/min, the carding roller rotating speed is 2000-4000 r/min, and the friction rolling rotating speed is 3000-4500 r/min.
9. The method for preparing the high-abrasion-resistance moisture power generation core spun yarn according to claim 5, wherein the spinning parameter of the yarn coating machine is that the feeding speed of the composite core yarn is 3-15 m/min, the tension of the composite core yarn is 0.5-15 cN, and the coating twist of the outer electrode is 300-600T/m.
10. The application of the high wear-resistant moisture power generation core spun yarn is characterized in that the moisture power generation yarn can be applied to self-powered wearable equipment.

Description

High-wear-resistance moisture power generation core spun yarn and preparation method and application thereof Technical Field The application relates to the technical field of spinning, in particular to a high-wear-resistance moisture power generation core spun yarn and a preparation method and application thereof. Background The Moisture Electric Generator (MEG) is a novel green energy acquisition technology, can utilize atmospheric moisture or moisture evaporation to generate electric energy, does not need an additional energy storage element, has the advantages of light weight, environmental protection, simple structure and the like, and is commonly used in the field of wearable equipment. The core is that energy conversion is realized by the interaction of materials and moisture through charge separation and directional migration, and the energy conversion is mainly divided into two power generation mechanisms of ion migration and charge separation. In the ion migration mechanism, hydrophilic materials adsorb moisture to form a conductive medium, ions directionally migrate under the drive of a humidity gradient and are collected by an electrode to form current, in the charge separation mechanism, surface charge separation occurs after the special materials adsorb the moisture, and the charges move along a specific direction and are led out by the electrode to form current. At present, various structures of moisture power generation devices are developed, wherein compared with film type and block type devices, the yarn-based device has the advantages of flexibility, braiding, good air permeability, mechanical stability and the like, can solve the problem of short plates of the traditional devices on flexibility, integration and comfort, is an ideal scheme for long-acting autonomous power supply of wearable equipment and sensors of the Internet of things, and has electric output performance which is mainly improved through structural design or material optimization. The Chinese patent application with publication number of CN121065871A discloses a moisture power generation yarn with a sheath-core structure, a preparation method and application thereof, wherein the yarn at least comprises a metal core layer, a cladding yarn layer and a conductive coating. The coating yarn layer comprises polyvinyl alcohol fibers doped with lithium chloride, the polyvinyl alcohol fibers are tightly wrapped on the outer periphery of the metal core layer through conjugated electrostatic spinning, the conductive coating is nano conductive silver paint, and the conductive coating is not in direct contact with the metal core layer. The yarn has good flexibility, and has excellent surface waterproof and moisture permeability, stability and reusability while forming stable output current and voltage. The application adopts a perforated conductive non-woven fabric as an external electrode, the structure of the conductive non-woven fabric is stable, the external electrode is not easy to damage and is invalid in the use process, meanwhile, the internal power generation layer can fully contact external moisture through perforation, the moisture absorption power generation power is improved, and the moisture absorption power generation yarn with good wear resistance, stable electrode medium and high moisture absorption power generation power can be obtained by adopting the scheme. Disclosure of Invention Aiming at the defects of the prior art, the primary purpose of the application is to provide a high wear-resistant moisture power generation core spun yarn, and a preparation method and application thereof. The application adopts conductive filaments as electrodes in a core layer, moisture-absorbing modified cotton fibers as an electricity generation layer and perforated conductive non-woven fabrics as outer electrodes of a skin layer to form the core-spun yarn with three layers of skin cores, adopts the conductive filaments and the conductive non-woven fabrics as the inner and outer electrodes to ensure good conductivity of the electrodes, adopts the moisture-absorbing modified cotton fibers as the electricity generation layer to provide good moisture-absorbing electricity generation performance, especially has a large specific surface area, effectively increases the moisture absorption performance, adopts the perforated conductive non-woven fabrics as the outer electrodes, and adopts the perforated conductive non-woven fabrics as the outer electrodes, so that the structure of the non-woven fabrics provides excellent wear resistance, and simultaneously increases the contact area between the electricity generation layer and moisture through perforation, thereby finally obtaining the moisture electricity generation yarn with good wear resistance, stable electrode medium and high moisture absorption electricity generation power. In order to achieve the above purpose, the present application provides the following technical scheme: The app