阅读说明：本技术 一种光触媒纺织品面料的制备方法 (Preparation method of photocatalyst textile fabric ) 是由 陆亚兰 马传滕 黄钢跃 黄胜康 于 2021-06-29 设计创作，主要内容包括：本发明公开了一种光触媒纺织品面料的制备方法,包括以下步骤：S1、织造：将经纱和纬纱梭织形成基布,并且经纱和纬纱分别每隔0.3～1.3cm嵌一条导电丝,经纱、纬纱和导电丝的截面为异形；S2、染色：采用退浆、精炼和染色的浴法工艺对基布处理；S3、光触媒配方制备：向纳米级二氧化钛中引入抗菌剂,得到光触媒溶液或光触媒印料；S4、将S1织造的基布放入S2配制的溶液中或以印花的方式在基布上印制。利用浸轧工艺在面料中加入纳米级的二氧化钛及抗菌剂,通过浸泡入光触媒溶液中或在人体汗腺发达部位印制有印花,使光触媒附着于织物内部或表面,使面料在太阳光紫外线的照射下达到自洁净功能,增加服装舒适性,减少人员更换服装频率,减少污水和碳的排放。(The invention discloses a preparation method of a photocatalyst textile fabric, which comprises the following steps: s1, weaving: weaving the warp yarns and the weft yarns into base cloth, embedding a conductive wire in each of the warp yarns and the weft yarns every 0.3-1.3 cm, and enabling the cross sections of the warp yarns, the weft yarns and the conductive wires to be special; s2, dyeing: treating the base cloth by adopting a bath process of desizing, refining and dyeing; s3, preparing a photocatalyst formula: introducing an antibacterial agent into the nano-scale titanium dioxide to obtain a photocatalyst solution or a photocatalyst printing material; s4, putting the base cloth woven by the S1 into the solution prepared by the S2 or printing the base cloth in a printing mode. Nanometer titanium dioxide and an antibacterial agent are added into the fabric by using a padding process, and the photocatalyst is attached to the inside or the surface of the fabric by soaking in a photocatalyst solution or printing on a developed part of a human sweat gland, so that the fabric achieves a self-cleaning function under the irradiation of sunlight ultraviolet rays, the comfort of the garment is improved, the garment replacement frequency of personnel is reduced, and the discharge of sewage and carbon is reduced.)

1. The preparation method of the photocatalyst textile fabric is characterized by comprising the following steps of:

s1, weaving: weaving warp yarns and weft yarns into base cloth, embedding a conductive wire in each of the warp yarns and the weft yarns every 0.3-1.3 cm, wherein the cross sections of the warp yarns, the weft yarns and the conductive wires are special;

s2, dyeing: treating the base cloth by adopting a bath process of desizing, refining and dyeing;

s3, preparing a photocatalyst formula: introducing an antibacterial agent into the nano-scale titanium dioxide to obtain a photocatalyst solution or a photocatalyst printing material;

s4, completely putting the base cloth woven by the S1 into the solution prepared by the S3, or printing on the base cloth in a printing mode.

2. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: in the S3, the photocatalyst is prepared by mixing 0.5-2% of nano-titanium dioxide, 2-5% of antibacterial agent and 90-96% of PH neutral water according to the weight ratio, magnetically stirring for 0.5-1h, and standing for 0.5-1h to obtain the photocatalyst solution.

3. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the cross sections of the warp yarns, the weft yarns and the conductive yarns comprise C-shaped, polygonal or rice-shaped structures so as to wrap more photocatalyst formulas.

4. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: in the S4, the base cloth soaked in the photocatalyst solution for 0.5 to 1 hour is subjected to padding and drying treatment to prepare the base cloth; padding pressure is 3-5KG, the mangle rolling rate is guaranteed to be 65-80%, the drying temperature is 150-180 ℃, and the drying speed is 15-50 m/min.

5. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the antibacterial agent comprises one or more of metals such as silver, copper, zinc and the like or ions thereof.

6. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the particle size of the nano-scale titanium dioxide is 3-5 nm.

7. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: in the step S4, the base fabric prepared by printing is printed with a print at least at a part where sweat glands of a human body are developed.

8. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the mixing mass ratio of the nano-scale titanium dioxide to the antibacterial agent in the photocatalyst printing material is 1: 4-1: 5.

9. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the photocatalyst printing material also comprises a printing dye.

10. The method for preparing photocatalyst textile fabric according to claim 1, characterized in that: the warp yarns of the base fabric are made of 75D-100D/72F-576F superfine fibers, and the weft yarns are made of 75D-150D/72F-576F superfine fibers; or the base fabric is formed by interweaving 50D-300D/72F-576F superfine fibers in warp yarns and 50D-300D/72F-1152F superfine fibers in weft yarns.

Technical Field

The invention relates to the technical field of fabrics, in particular to a preparation method of a photocatalyst textile fabric.

Background

The conventional textile fabric has good wear resistance, high strength coefficient, water resistance and water washing resistance, but the wearing comfort is neglected, the clothes can be replaced in time in outdoor exercises and training for a long time, and the clothes made of the fabric which can be self-cleaned are very needed.

The long-time outdoor activities make the clothing full of harmful substance such as sweat, dust, because some post personnel's clothing particularity can not carry out conventional washing, human sweat can not accomplish self-purification again, need prepare a surface fabric, only rely on the irradiation of sunlight ultraviolet to just can reach surface fabric self-purification and air-purifying.

Disclosure of Invention

The invention overcomes the defects of the prior art, provides a preparation method of a photocatalyst textile fabric, and aims to provide a fabric which can achieve self-purification and air purification only by irradiation of sunlight and ultraviolet rays.

In order to achieve the purpose, the invention adopts the technical scheme that: the preparation method of the photocatalyst textile fabric is characterized by comprising the following steps of:

s1, weaving: weaving warp yarns and weft yarns into base cloth, embedding a conductive wire in each of the warp yarns and the weft yarns every 0.3-1.3 cm, wherein the cross sections of the warp yarns, the weft yarns and the conductive wires are special;

s2, dyeing: treating the base cloth by adopting a bath process of desizing, refining and dyeing;

s3, preparing a photocatalyst formula: introducing an antibacterial agent into the nano-scale titanium dioxide to obtain a photocatalyst solution or a photocatalyst printing material;

s4, completely putting the base cloth woven by the S1 into the solution prepared by the S2, or printing on the base cloth in a printing mode.

In a preferred embodiment of the present invention, in the S3, the photocatalyst formulation is prepared by mixing 0.5% -2% of nano-titanium dioxide, 2% -5% of antibacterial agent and 90% -96% of PH neutral water by weight, magnetically stirring for 0.5-1h, and standing for 0.5-1h to obtain the photocatalyst solution.

In a preferred embodiment of the present invention, the cross-sections of the warp, the weft and the conductive yarn include a C-shaped, polygonal or cross-shaped structure to wrap more of the photocatalyst formulation.

In a preferred embodiment of the present invention, in S4, the base cloth soaked in the photocatalyst solution for 0.5 to 1 hour is padded and dried to prepare; padding pressure is 3-5KG, the mangle rolling rate is guaranteed to be 65-80%, the drying temperature is 150-180 ℃, and the drying speed is 15-50 m/min.

In a preferred embodiment of the present invention, the antimicrobial agent comprises one or more of silver, copper, zinc, and the like, or ions thereof.

In a preferred embodiment of the present invention, the nano-sized titanium dioxide has a particle size of 3 to 5 nm.

In a preferred embodiment of the present invention, in S4, the base fabric is printed at least at the part where sweat glands of a human body are developed.

In a preferred embodiment of the present invention, the mixing mass ratio of the nano-titanium dioxide and the antibacterial agent in the photocatalyst printing material is 1:4 to 1: 5.

In a preferred embodiment of the present invention, the photocatalyst printing material further includes a printing dye.

In a preferred embodiment of the invention, the warp yarns of the base fabric adopt 75D-100D/72F-576F superfine fibers, the weft yarns adopt 75D-150D/72F-576F superfine fibers, the weaving density of the warp yarns is 50-75 pieces/cm in the warp direction, and the weaving density of the weft yarns is 30-45 pieces/cm in the weft direction; or the base fabric is formed by interweaving 50D-300D/72F-576F superfine fibers in warp yarns and 50D-300D/72F-1152F superfine fibers in weft yarns, wherein the weaving density of the warp yarns is 60-80 pieces/cm in the warp direction, and the weaving density of the weft yarns is 35-50 pieces/cm in the weft direction.

In a preferred embodiment of the invention, the weave pattern is woven using a plain weave, twill weave heavy duty loom.

In a preferred embodiment of the present invention, the conductive filaments are copper filaments, stainless steel filaments, graphite or carbon filaments, and polyester antistatic filaments. The present invention is preferably a carbon fiber conductive yarn.

The invention solves the defects in the background technology, and has the following beneficial effects:

(1) the invention relates to a photocatalyst textile fabric, which is printed on a developed part of sweat glands of a human body by soaking in a photocatalyst solution; so that the photocatalyst is attached to the inside or surface of the fabric.

(2) According to the invention, the nanoscale titanium dioxide and the antibacterial agent are added into the fabric by using the padding process, so that the fabric can rapidly achieve a self-cleaning function under the irradiation of sunlight ultraviolet rays, the comfort of the clothes is greatly enhanced, the frequency of replacing the clothes by personnel is reduced, the discharge of sewage is reduced, and the discharge of carbon is reduced.

(3) The base fabric of the invention can be cotton, terylene, chinlon or blended products thereof, and has wider application. The warp yarns, the weft yarns and the conductive yarns which are preferably used are profiled fibers, so that the woven base fabric has a concave shape on a micro fiber structure, photocatalyst particles in printing materials or solutions easily enter the profiled structure to wrap more photocatalyst formulas, and thus, the photocatalyst with micro-nano sizes can be firmly combined with the fibers, and the fabric is waterproof and washable.

(4) The photocatalyst textile fabric prepared by the invention is suitable for outdoor activities, when people do long-time outdoor activities, the main distribution areas of the high humidity and high temperature areas are at the positions of the back scapula, the front chest, the armpit and the like, and the prints containing photocatalyst particles are printed at the developed sweat glands, so that the sweat parts of the human body directly achieve self-purification, and the fabric can achieve self-purification and air purification only by the irradiation of sunlight ultraviolet rays without conventional washing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;

fig. 1 is a flowchart of a method for preparing a photocatalyst textile fabric according to a preferred embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1, a flow chart of a method for preparing a photocatalyst textile fabric mainly comprises the following steps:

s1, weaving: weaving the warp yarns and the weft yarns into base cloth, embedding a conductive wire in each of the warp yarns and the weft yarns every 0.3-1.3 cm, and enabling the cross sections of the warp yarns, the weft yarns and the conductive wires to be special;

s2, dyeing: treating the base cloth by adopting a bath process of desizing, refining and dyeing;

s3, preparing a photocatalyst formula: introducing an antibacterial agent into the nano-scale titanium dioxide to obtain a photocatalyst solution or a photocatalyst printing material;

s4, completely putting the base cloth woven by the S1 into the solution prepared by the S3, or printing on the base cloth in a printing mode.

The warp, the weft and the conductive filaments used in the invention are all profiled fibers, and the cross sections of the warp, the weft and the conductive filaments comprise C-shaped, polygonal or rice-shaped structures, so that the base fabric after weaving has a concave shape on a micro-fiber structure, photocatalyst particles in printing materials or solutions easily enter the profiled structures and wrap more photocatalyst formulas, and thus, the photocatalyst with micro-nano size can be firmly combined with the fibers, and the fabric is waterproof and washable.

The photocatalyst formula is transplanted to the fabric in two ways. The photocatalyst is prepared by mixing 0.5-2% of nano-scale titanium dioxide, 2-5% of an antibacterial agent and 90-96% of PH neutral water according to the weight ratio, magnetically stirring the mixture for 0.5-1h, and standing the mixture for 0.5-1h to obtain a photocatalyst solution. Completely soaking the base cloth in the solution prepared by S2, and padding and drying the base cloth soaked in the photocatalyst solution for 0.5-1h to prepare the base cloth; padding under the pressure of 3-5KG to ensure that the mangle rolling rate is 65-80%, the drying temperature is 150-180 ℃, and the drying speed is 15-50m/min, so that the titanium dioxide is uniformly distributed on the base cloth.

It should be noted that nano titanium dioxide is an important inorganic transition metal oxide material, and nano titanium dioxide is an active titanium TiO2, which belongs to an n-type semiconductor material, and has high catalytic activity, good weather resistance, and excellent ultraviolet resistance. The dispersed nano material is attached to the surface of the fabric through a special process to form the nano film, the original performance of the material is not changed, and the material has a durable washing resistance function. The forbidden band width of the nano titanium dioxide is 3.2ev (anatase), when the nano titanium dioxide is irradiated by light (ultraviolet light) with the wavelength less than or equal to 387.5nm, electrons of a valence band can obtain the energy of photons and go forward to a conduction band to form photo-generated electrons (e-); and photogenerated holes (h +) are correspondingly formed in the valence band.

The grain size of the nano-scale titanium dioxide is 3-5 nm. The preparation process of the nano-scale titanium dioxide with the size is simple, the size is controllable, the production efficiency is improved, and the cost is saved. In the present invention, it is preferable to use titanium dioxide of 5nm because titanium dioxide of 5nm has good dispersibility and can be self-dispersed in pure water without stirring. The dispersed liquid can be directly sprayed to the fabric to form a uniform titanium dioxide nano coating. The catalytic activity of the 5nm titanium dioxide in the invention is tested, harmful substances such as sweat, dust and the like can be captured and decomposed, and the odor removing effect is good.

In the invention, titanium dioxide is dispersed in an antibacterial solution, each TiO2 particle in the solution is approximately regarded as a small short-circuit photoelectrochemical cell, and photo-generated electrons and holes generated by photoelectric effect respectively migrate to different positions on the surface of TiO2 under the action of an electric field. The photo-generated electrons e-on the surface of TiO2 are easily captured by oxidizing substances such as oxygen dissolved in water, while the holes H + can oxidize organic matters adsorbed on the surface of TiO2 or oxidize OH-and H2O molecules adsorbed on the surface of TiO2 into OH free radicals, and the base cloth is soaked in the formula solution, so that most organic matters and inorganic pollutants on the surface of the base cloth can be oxidized, and the organic matters and the inorganic pollutants are mineralized into inorganic small molecules, CO2, H2O and other harmless substances.

The second mode provided by the invention is to print the printing material on the base cloth by using printing equipment. The printing material comprises printing dye and photocatalyst. The mixing mass ratio of the nano-scale titanium dioxide to the antibacterial agent in the photocatalyst printing material is 1: 4-1: 5. The base cloth prepared by the printing mode is printed with the printing at least at the sweat gland part of the human body. During long-time outdoor activities, the main distribution areas of the high humidity and high temperature areas are printed on the parts such as the rear scapula, the front chest, the armpit and the like, and the printing containing photocatalyst particles is printed on the parts, so that the sweat parts of the human body directly achieve self-purification, the sweat parts only depend on the irradiation of sunlight ultraviolet rays, the conventional washing is not needed, and the purposes of fabric self-purification and air purification can be achieved.

Certainly, the invention does not limit the photocatalyst formula to be transplanted on the fabric to the soaking or cloth printing process, but also includes but is not limited to a mode of transferring the photocatalyst to the base cloth by spraying, drawing, spraying and the like, and the aim is to enable the photocatalyst formula to be attached to the surface or the inside of the base cloth in a certain mode, and enable the photocatalyst formula to be processed on the surface of the base cloth and in gaps among fibers, so that the processed base cloth has certain effects of antibiosis, ultraviolet resistance, ventilation and self-cleaning.

The antibacterial agent provided by the invention comprises one or more of metals such as silver, copper, zinc and the like or ions thereof. The addition of the antibacterial agent can promote the fabric to absorb sunlight, so that the fabric has a good response effect under the sunlight, and the effect of the photocatalyst is enhanced.

The base fabric of the invention can be cotton, terylene, chinlon or blended products thereof. The warp yarn is preferably 75D-100D/72F-576F superfine fiber, the weft yarn is 75D-150D/72F-576F superfine fiber, the weaving density of the warp yarn is 50-75 pieces/cm in the warp direction, and the weaving density of the weft yarn is 30-45 pieces/cm in the weft direction; or the base cloth is formed by interweaving 50D-300D/72F-576F superfine fibers in warp yarns and 50D-300D/72F-1152F superfine fibers in weft yarns, wherein the weaving density of the warp yarns is 60-80 pieces/cm in the warp direction, and the weaving density of the weft yarns is 35-50 pieces/cm in the weft direction. The fabric weave is woven by a plain weave and twill heavy weight loom.

The conductive yarn can be selected from filaments spun by fibers with the conductivity of more than 10 < -5 > S/m, such as copper fiber yarns, stainless steel wires, graphite or carbon fiber yarns, polyester antistatic filaments and the like. The present invention is preferably a carbon fiber conductive yarn. The linear density of the conductive yarn is smaller than that of the normal warp yarn, but the weavability of the weaving process can be satisfied. The product is high-performance antistatic fiber, and has effect of preventing static electricity causing various faults. The cloth is mixed with a small amount of fiber to have permanent antistatic performance.

In conclusion, the nano-scale titanium dioxide and the antibacterial agent are added into the fabric by using the padding process, so that the fabric can rapidly achieve the self-cleaning function under the irradiation of sunlight ultraviolet rays, the comfort of the clothes is greatly enhanced, the frequency of replacing the clothes by personnel is reduced, the discharge of sewage is reduced, and the discharge of carbon is reduced.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.