CN-119502469-B - Intelligent driving film composite fabric and preparation method thereof

CN119502469BCN 119502469 BCN119502469 BCN 119502469BCN-119502469-B

Abstract

The invention provides an intelligent driving film composite fabric and a preparation method thereof, wherein the pretreatment yarn is obtained by alkali treatment of a humidity-sensitive yarn; twisting the pretreated yarn after absorbing water to obtain twisted yarn, preparing the twisted yarn into woven fabric through a weaving process, and curing the woven fabric serving as a bottom layer and a hydrophobic film material serving as a surface layer to obtain the intelligent driving film composite fabric. According to the invention, through the fish scale structure of the hydrophobic film and the design of the bottom layer moisture-sensitive yarns, the response of the fabric under different humidity conditions can be realized. Hydrophilic groups arranged on cellulose macromolecules promote excellent moisture absorption properties of the fibers. The yarn treated by alkali liquor changes the ratio of the internal crystal area to the amorphous area, and strengthens the humidity sensitivity. The invention combines multiple functions into a whole, improves the performance of the fabric in the aspects of humidity management and environmental adaptability, and is beneficial to more effectively coping with the requirements of humidity change and environmental regulation in various application occasions.

Inventors

WANG DONG
ZHAO QINGHUA
Peng Linghao
LIU LIANGXIAO
XUE HENG

Assignees

武汉纺织大学

Dates

Publication Date: 20260512
Application Date: 20241012

Claims (7)

1. The preparation method of the intelligent driving film composite fabric is characterized by comprising the following steps of: S1, adding a moisture-sensitive yarn into a NaOH solution for alkali treatment to obtain a pretreated yarn; s2, twisting the pretreated yarn obtained in the step S1 after absorbing water to obtain twisted yarns; s3, preparing the twisted yarns obtained in the step S2 into woven fabric through a weaving process; S4, curing the woven fabric obtained in the step S3 serving as a bottom layer and the hydrophobic film material serving as a surface layer to obtain the intelligent driving film composite fabric; wherein the moisture-sensitive yarn is one or more of cotton yarn, silk, wool fiber and viscose fiber; the hydrophobic membrane material is of a scaly structure; The curing treatment mode is to compound the end parts of the scales of the hydrophobic membrane material with the bottom fabric, and gaps exist between the front ends of the scales and the membrane material.
2. The method for preparing the intelligent driving film composite fabric according to claim 1, wherein in the step S1, the concentration of the NaOH solution is 140-420 g/L.
3. The method for preparing the intelligent driving film composite fabric according to claim 2, wherein the moisture regain of the pretreated yarn is 40-70%.
4. The method for producing an intelligent driving film composite fabric according to claim 1, wherein in the step S2, the twist of the twist is 300 to 1500 twists.
5. The method for producing an intelligent driving film composite fabric according to claim 4, wherein the twist direction is right-handed.
6. The method for producing a composite fabric for an intelligent driving membrane according to claim 1, wherein in step S4, the hydrophobic membrane material is one of a polytetrafluoroethylene membrane, a polyethylene membrane and a silicone membrane.
7. An intelligent driving film composite fabric, characterized in that it is produced by the method for producing an intelligent driving film composite fabric according to any one of claims 1 to 6.

Description

Intelligent driving film composite fabric and preparation method thereof Technical Field The invention relates to the technical field of intelligent materials, in particular to an intelligent driving film composite fabric and a preparation method thereof. Background The intelligent material is a novel material and can respond to external stimulus under certain conditions. With the advent of the 4.0 era of industry, intelligent materials with "life" as a core have been rapidly developed. Intelligent materials are regarded as intersecting subjects in the new material field, and are the focus of attention of research subjects of various subjects. Along with the improvement of people's going to outdoor exercises and the performance requirement to intelligent materials, traditional intelligent communication equipment faces the problems of poor energy supply continuous performance, low portability and the like, and the rescue is not timely, so that serious life loss is caused. In addition, complex outdoor environments require intelligent materials to have multiple functions of intelligence, protection, flexibility, and wearing comfort. The intelligent material provides intelligence, and needs to ensure high flexibility, wearing comfort, durability and certain protection of the base material, and meanwhile, the intelligent material also needs to realize large-scale production and customized preparation, so that in the development process of the outdoor multifunctional intelligent material, the realization of passive reaction is active response, and the self-response functional intelligent material becomes a main research direction of the intelligent material in the future. In view of the foregoing, there is a need for an improved intelligent driving film composite fabric and a method for preparing the same, which solve the above-mentioned problems. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide the intelligent driving film composite fabric and the preparation method thereof, and response of the fabric under different humidity conditions is realized through the fish scale structure of the hydrophobic film and the design of the bottom yarn. In order to achieve the above purpose, the invention provides a preparation method of an intelligent driving film composite fabric, which comprises the following steps: S1, adding a moisture-sensitive yarn into a NaOH solution for alkali treatment to obtain a pretreated yarn; s2, twisting the pretreated yarn obtained in the step S1 after absorbing water to obtain twisted yarns; s3, preparing the twisted yarns obtained in the step S2 into woven fabric through a weaving process; S4, curing the woven fabric obtained in the step S3 serving as a bottom layer and the hydrophobic film material serving as a surface layer to obtain the intelligent driving film composite fabric. As a further improvement of the invention, in the step S1, the concentration of the NaOH solution is 140-420 g/L. The moisture-sensitive yarn is one or more of cotton yarn, silk, wool fiber and viscose fiber. The moisture regain of the pretreated yarn is 40-70%. As a further improvement of the invention, in the step S2, the twist degree of the twisting is 300-1500 twists. The twisting direction is right-handed. As a further improvement of the present invention, in step S4, the hydrophobic membrane material is one of a polytetrafluoroethylene membrane, a polyethylene membrane and a silicone membrane. Further, the hydrophobic membrane material is of a scaly structure. The curing treatment mode is to compound the end parts of the scales of the hydrophobic membrane material with the bottom fabric, and gaps exist between the front ends of the scales and the membrane material. The invention also provides the intelligent driving film composite fabric, which is prepared by the preparation method of the intelligent driving film composite fabric. The beneficial effects of the invention are as follows: The invention provides an intelligent driving film composite fabric and a preparation method thereof, and response of the fabric under different humidity conditions can be realized through the fish scale structure of a hydrophobic film and the design of bottom yarns. Hydrophilic groups arranged on cellulose macromolecules promote excellent moisture absorption properties of the fibers. Although the original purpose of treating the yarn with alkali liquor is to improve dyeing and taking performance, the yarn after alkali liquor treatment changes the ratio of an internal crystal area to an amorphous area, strengthens humidity sensitivity, and when the humidity of the surrounding environment changes, the fiber can generate a hygroscopic expansion effect, the humidity increases fiber untwisting and the humidity reduces fiber twisting and whirling. When the humidity is high, the moisture-sensitive yarn can be untwisted, so that the pore diameter is enlarged, water is allowed to pass thro