An ultra-dry fibrous material and a method for its production

Abstract

The application discloses a super-speed dry fiber material, the fiber of the super-speed dry fiber material comprises a hollow structure and a fiber body, the fiber body covers the hollow structure, a plurality of holes are formed on the fiber body, and at least part of the plurality of holes are communicated with the hollow structure. The opening state of the plurality of hole structures on the surface of the fiber body is realized, the specific surface area of the fiber material is improved, the hygroscopicity and the moisture conductivity are improved, the fast-drying effect of the material is realized, the air-permeable characteristics of the material are improved, and the long-term effective fast-drying performance can be maintained.

Description

Technical Field

[0001] This application relates to the textile field, and in particular to an ultra-fast drying fiber material and its preparation method. Background Technology

[0002] With the increasing popularity of functional fabrics, people generally choose quick-drying fabrics to increase comfort in hot summer weather, humid environments during the rainy season, and when exercising.

[0003] However, fabrics generally suffer from the problem of difficulty in achieving both moisture absorption and quick-drying properties. For example, hydrophilic fabrics such as pure cotton have good moisture absorption but cannot effectively wick away sweat. Adding auxiliaries to fabrics to achieve sweat-wicking functions, such as moisture-wicking finishing agents, can improve the quick-drying performance of the fabric. However, after several washes, such fabrics lose their quick-drying effect due to the loss of the auxiliaries. Adding auxiliaries also generates chemical waste, which pollutes the environment.

[0004] To improve the quick-drying performance of existing fabrics, current technologies combine various functional fibers using specific weaving methods. This creates a capillary effect in the fabric's macrostructure, allowing it to absorb sweat and achieve moisture-wicking. However, this method also faces the challenge of damaging the macrostructure after washing and rubbing, causing the fabric to lose its quick-drying properties.

[0005] Therefore, how to prepare materials that are both environmentally friendly and durable, and achieve quick-drying properties in fabrics, is a difficult problem for those skilled in the art. Summary of the Invention

[0006] The purpose of this application is to overcome the problems of the prior art and provide an ultra-fast drying fiber material and its preparation method to achieve the functional application of quick-drying clothing and shoes.

[0007] To achieve the above objectives, this application provides an ultra-fast drying fiber material. The ultra-fast drying fiber material uses one or more of bundled fibers or interwoven fibers. The fiber includes a hollow structure and a fiber body. The fiber body covers the hollow structure and forms a plurality of pores. At least some of the pores are connected to the hollow structure.

[0008] Optionally, the holes may exist independently of each other or multiple holes may exist side by side.

[0009] Optionally, the pores are distributed in the fiber body or on the surface of the fiber body, and the porous structure is one or more of a honeycomb structure or a sponge structure.

[0010] Optionally, the hole is an open hole structure.

[0011] Optionally, the aperture of the hole is smaller than the hollow diameter of the hollow structure;

[0012] Optionally, the aperture of the hole is 0.2 to 1 μm, and the hollow diameter of the hollow structure is 3 to 20 μm.

[0013] Optionally, the ultra-fast drying fiber material of this application satisfies at least one of the following characteristics: the porosity of the ultra-fast drying fiber material is 6% to 12%; the resilience of the ultra-fast drying fiber material is greater than or equal to 0.93; and the evaporation rate of the ultra-fast drying fiber material before and after washing is greater than or equal to 0.35 g / hr.

[0014] This application also provides a method for preparing ultra-fast drying fiber materials, comprising the following steps:

[0015] S1: Preparation of silica aerogel sections;

[0016] S2: The silica aerogel slices are melt-spun into fibers, which are then spun through a hollow spinneret. The spun fibers are cooled, bundled, and wound to obtain ultra-fast dry fiber pre-oriented yarns.

[0017] S3: Obtain hollow structure fiber textured yarn by false twisting ultra-fast dry fiber pre-oriented yarn;

[0018] S4: Hollow structure deformed fiber filaments are placed in an alkaline solution for alkali reduction treatment to obtain ultra-fast drying fiber material.

[0019] Optionally, the S1 preparation method includes the following steps:

[0020] S11: The surface-modified silica powder is dispersed in a diol solution to obtain a pretreated silica dispersion; the pretreated silica dispersion is added to the polyester synthesis process to obtain silica aerogel slices.

[0021] Optionally, the silica powder is prepared from fumed silica.

[0022] Optionally, the diol solution is one or more of ethylene glycol, butanediol, or propylene glycol, and the polyester is synthesized from one or more of polyethylene terephthalate, polybutylene terephthalate, or polypropylene terephthalate.

[0023] Optionally, the S2 preparation method includes the following steps:

[0024] S21: Melt spinning: The silica aerogel slices are fed into a screw extruder, melted at high temperature, extruded as melt, and impurities in the melt are filtered out. The melt is then ejected through a spinneret with a hollow cross section, cooled, bundled, and wound to obtain ultra-fast dry fiber pre-oriented yarn with a hollow cross section.

[0025] Optionally, the parameters for melt spinning are: spinning temperature: 280-290°C, spinning winding speed: 2500-3000 m / min; the parameters for false twist are: twist direction: S / Z, texturing speed: 500-600 m / min, draw ratio: 1.55-1.65, heating temperature: 175-185°C, D / Y: 1.65-1.7.

[0026] Optionally, the alkali concentration for the alkali opening process is 0.6% to 1.2%, the temperature is 100 to 120°C, the time is 60 to 100 min, and the bath ratio of the fiber material to the alkali solution is 1:(20 to 50).

[0027] Optionally, the step further includes weaving, dyeing, and spinning the ultra-fast drying fiber material into clothing.

[0028] Compared with existing technologies, this application has the following advantages:

[0029] 1. Multiple pores are created on the surface of the fiber body. This porous structure increases the specific surface area of ​​the fiber material, improves its moisture absorption and wicking properties, and achieves a fast-drying effect.

[0030] 2. By connecting the pores of the fiber body with the hollow structure, the fiber material is opened up 360 degrees under microscopic conditions, allowing air to circulate and improving the material's breathability; whereas in the existing technology, the fabric is formed by weaving the fiber material and opening up the two sides of the fabric to allow air to circulate by leaving gaps in the fabric structure.

[0031] 3. By connecting the pores of the fiber material with the hollow structure, moisture can quickly pass through the fiber, improving the material's moisture conductivity. This breaks the pattern that the hollow structure can only play the role of heat insulation, expanding the use of hollow fiber materials from only being used in thermal insulation fabrics to the field of moisture-wicking and quick-drying fabrics.

[0032] 4. Using the ultra-fast-drying fiber material provided in this application, the quick-drying performance of the raw yarn is relatively stable, and it can still maintain effective quick-drying performance after repeated wearing and washing. Attached Figure Description

[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 This is a flowchart of a method for preparing an ultra-fast drying fiber material provided in an embodiment of this application.

[0035] Figure 2 This is a scanning electron microscope image of the porous structure of an ultra-fast drying fiber material provided in an embodiment of this application.

[0036] Figure 3 This is a scanning electron microscope image of the hollow structure of an ultra-fast drying fiber material provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] As used herein, "an embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. The content of this application can be more readily understood by referring to the following detailed description of preferred embodiments and included examples. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. In case of conflict, the definitions in this specification shall prevail.

[0039] For the purposes of the detailed description below, it should be understood that various alternative variations and sequences of steps may be employed in this application, unless expressly stated otherwise. Furthermore, except in any operational instance, or otherwise indicated, all figures representing the amounts of ingredients used, for example, in the specification and claims, should be understood to be modified in all cases by the term “about.” Therefore, unless indicated to the contrary, the numerical parameters set forth in the following specification and appended claims are approximate values ​​varying according to the desired performance to be obtained in this application. At least not in an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should be interpreted at least according to the number of reported significant figures and by applying ordinary rounding techniques.

[0040] Although the numerical ranges and parameters described in this application are approximate, the values ​​listed in the specific examples are reported as precisely as possible. However, any numerical value inherently contains some error that is necessarily caused by the standard deviation found in their respective test measurements.

[0041] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are included. For example, a specified range from “1 to 10” should be considered to include any and all subranges between the minimum value 1 and the maximum value 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0042] This application provides an ultra-fast-drying fiber material, comprising one or more of bundled fibers or interwoven fibers. The fiber includes a hollow structure and a fiber body. The cross-section of the fiber is hollow, and multiple pores are formed within and on the surface of the fiber body. The fiber body covers the hollow structure, and at least some of the pores are connected to the hollow structure. Under microscopic conditions, air molecules inside the fiber can propagate from the hollow structure to the fiber body, achieving 360-degree overall permeability. Air can circulate from the inside to the outside of the fiber material, improving its breathability. This breaks the limitation that hollow structures can only insulate against heat exchange, expanding the application of hollow-structured fiber materials from solely thermal insulation fabrics to the field of moisture-wicking and quick-drying fabrics.

[0043] In some embodiments, pores are distributed or dispersed within the fiber body, and also distributed or dispersed on the surface of the fiber body; the pores can be one or more of a honeycomb structure or a sponge structure, wherein a honeycomb structure refers to a regular porous structure, and a sponge structure refers to an irregular porous structure. The pores distributed on the surface of the fiber body are open pore structures, and the boundaries of the pores are ultra-fast drying fiber materials.

[0044] Specifically, the pores can be irregular, and some pores exist independently; others can have two or more pores coexisting. The presence of pores increases the specific surface area of ​​the material and increases the material's air permeability.

[0045] In this structure, the pores distributed on the surface of the fiber body can quickly absorb the moisture carried by the wearer. In the ultra-fast drying fiber material of this application, the moisture enters the hollow structure through the pores, then enters the pores through the hollow structure, and is then discharged into the pores on the surface of the fiber body, leaving the fiber material, thereby improving the moisture conductivity of the fiber material.

[0046] Due to the irregularity of gas diffusion, moisture can also diffuse directly into the outside air through the pores in the fiber body. Due to the existence of the hollow structure, the internal adsorption pressure of the ultra-fast drying fiber material of this application is relatively small. When moisture diffuses directly into the outside air through the pores in the fiber body, it can also achieve the purpose of rapid diffusion.

[0047] In some embodiments, the pore size is 0.2–1 μm, and the hollow diameter of the hollow structure is 3–20 μm.

[0048] Specifically, the pore size can be 0.2, 0.5, 0.8, or 1.0 μm;

[0049] The hollow diameter of the hollow structure can be 3, 5, 6, 10, 12, 16, 17, 18, 19, or 20 μm.

[0050] In some embodiments, the ultra-fast drying fiber material of this application satisfies at least one of the following characteristics: the ultra-fast drying fiber material may have a porosity of 5% to 12%; the ultra-fast drying fiber material is lighter and fluffier, for example, compared with conventional polyester DTY75D / 72F of the same specification, when knitted into plain weave fabric using the same circular knitting machine, the weight of the ultra-fast drying fabric is more than 5% smaller than that of the conventional polyester fabric, and the fabric thickness is more than 2% thicker than that of the conventional polyester fabric.

[0051] This application also provides a method for preparing ultra-fast drying fiber materials, the method comprising the following steps:

[0052] S1: Preparation of aerogel slices: Silica powder is prepared by fumed silica. The surface-modified silica powder is dispersed in a diol solution to obtain a pretreated silica dispersion. The pretreated silica dispersion is added to the polyester slice synthesis process to obtain silica aerogel slices.

[0053] Specifically, the mass ratio of silica powder is 10% to 50%, and the mass ratio of pretreated silica dispersion is 1% to 10%; the mass fraction of silica in the obtained silica aerogel slices is 1% to 5%.

[0054] In some embodiments, the diol solution is one or more of ethylene glycol, butanediol, or propylene glycol, and the polyester is synthesized from one or more of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or polypropylene terephthalate (PTT).

[0055] In some embodiments, trace amounts of additives are added during the surface modification process to make the powder easier to disperse uniformly in the polyester chips.

[0056] S2: Melt spinning: The silica aerogel slices are fed into a screw extruder, melted at high temperature, extruded into a melt, and impurities in the melt are filtered out. The melt is then ejected through a spinneret with a hollow cross section, cooled, bundled, and wound to obtain ultra-fast dry fiber pre-oriented yarn (POY yarn) with a hollow cross section.

[0057] In some embodiments, the preset cross-section can be adjusted according to the requirements of the preset process. For example, due to the difference in rheological properties between aerogel chips and conventional polyester chips, parameters such as the hollow cross-section ratio and aspect ratio of the spinneret holes need to be adjusted, thereby adjusting the diameter of the fiber hollow structure. This prevents the hollow cross-section from being too large, affecting the fiber strength of the material, or too small, affecting the hollowness, further hindering the connection between the hollow structure and the porous structure. The spinneret with the hollow cross-section has a 3C or 4C shaped structure, and the melt is sprayed around this structure. When the melt cools, a hollow structure is formed inside. This method ensures the independence and continuity of the hollow structure inside the fiber material. Figure 3 As shown, under a scanning electron microscope, the hollow structure of each individual fiber material is independent and continuously runs through the fiber body. Compared with the partially hollow structure obtained by chemically melting the internal material of the fiber in the prior art, the hollow structure of this application is more complete.

[0058] In some embodiments, the parameters for melt spinning are: spinning temperature: 250~290℃, spinning winding speed: 2500~3000 m / min;

[0059] Specifically, the spinning temperature can be 250–265℃, 260–280℃, or 280–290℃.

[0060] S3: False twist: The obtained ultra-fast dry fiber pre-oriented yarn is used to obtain hollow structure fiber textured yarn through a false twist process;

[0061] In some embodiments, the parameters of false twist are: twist direction: S / Z, texturing speed: 500-600 m / min, draw ratio: 1.55-1.65, heating temperature: 175-185°C, D / Y: 1.65-1.7;

[0062] S4: Alkali-based fiber opening: Hollow structure deformed fiber is placed in an alkaline solution for alkali reduction treatment to obtain ultra-fast drying fiber material.

[0063] S5: The ultra-fast drying fiber material is woven into fabric using a loom to obtain a fabric with hollow ultra-fast drying fiber material.

[0064] In some embodiments, the alkali for alkali opening is at least one of sodium hydroxide or potassium hydroxide, with a concentration of 0.6% to 1.2%, the opening temperature is 100 to 120°C, the opening time is 60 to 100 min, and the bath ratio of fiber material to alkali solution is 1:(20 to 50).

[0065] In some embodiments, the steps of S4 alkali fiber opening and S5 fabrication can be interchanged.

[0066] The purpose of alkali-based fiber opening is to prepare a fiber body with a porous structure, combined with Figure 2-3 As shown in Embodiment 2 of this application, the thickness of the fiber body is 5–15 μm. If there is no porous structure or the porous structure is only on the outer surface of the fiber body, the fiber will still be a thermal insulation material with low drying speed and air permeability. Therefore, this application needs to connect the porous structure with the hollow structure to further improve the air flow on the surface and inside of the material, so as to achieve the purpose of air permeability and quick drying of the fiber material.

[0067] Specifically, through the alkali fiber opening step, the fiber body is opened, and the fiber weight reduction rate is controlled, so that the fiber can achieve the function of air permeability while ensuring the quality of the fiber itself.

[0068] In some embodiments, the method for preparing ultra-fast drying fiber materials further includes dyeing the ultra-fast drying fiber materials and weaving them into clothing, such as sportswear and sports shoes.

[0069] The following describes an ultra-fast drying fiber material and its preparation method based on specific embodiments.

[0070] Example 1

[0071] S1: Preparation of aerogel slices: Silica powder was prepared using fumed silica. The surface-modified silica powder was dispersed in an ethylene glycol solution at a mass ratio of 10% to obtain a pretreated silica dispersion. Fumed silica dispersion was added during the synthesis of polyethylene terephthalate. The amount of fumed silica dispersion added was 10% of the mass of polyester to prepare aerogel slices containing 1% fumed silica.

[0072] S2: Melt spinning: After the silica aerogel slices are dried and crystallized, they are fed into a screw extruder, melted at high temperature, and the melt is extruded. Impurities in the melt are filtered out. The melt passes through a spinneret with a hollow cross-section having a 3C-shaped structure. The melt is sprayed out around the structure and forms a hollow structure inside during cooling. After cooling, the fibers are bundled and wound to obtain ultra-fast dry fiber pre-oriented yarn (POY yarn) with a hollow cross-section. The fiber hollowness rate is 15% to 20%. The parameters of the spinning process are: spinning temperature: 284 to 286°C, spinning winding speed: 2800 to 2900 meters / min.

[0073] S3: False twist: The obtained ultra-fast dry fiber pre-oriented yarn (POY yarn) is processed by false twist to obtain hollow structure fiber textured yarn;

[0074] S4: Alkali-based fiber opening: Hollow structure deformed fiber filaments are placed in 0.6% NaOH alkaline solution for alkali reduction treatment at a temperature of 100℃ for 70 minutes and a bath ratio of 1:20 to obtain ultra-fast dry fiber material with a porosity of 10%.

[0075] S5: The ultra-fast drying fiber material is woven into fabric using a loom to obtain a fabric containing the ultra-fast drying fiber material.

[0076] Example 2

[0077] S1: Preparation of aerogel slices: Silica powder was prepared using fumed silica. The surface-modified silica powder was dispersed in an ethylene glycol solution at a mass ratio of 20% to obtain a pretreated silica dispersion. The silica dispersion was added during the synthesis of polyethylene terephthalate. The amount of fumed silica dispersion added was 5% of the mass of the polyester to prepare aerogel slices containing 1% fumed silica.

[0078] S2: Melt spinning: After the silica aerogel slices are dried and crystallized, they are fed into a screw extruder, melted at high temperature, and the melt is extruded. Impurities in the melt are filtered out. The melt passes through a spinneret with a hollow cross-section having a 4C-shaped structure. The melt is sprayed out around the structure and forms a hollow structure inside during cooling. After cooling, the fibers are bundled and wound to obtain ultra-fast dry fiber pre-oriented yarn (POY yarn) with a hollow cross-section. The fiber hollowness rate is 15% to 20%. The parameters of the spinning process are: spinning temperature: 284 to 286°C, spinning winding speed: 2800 to 2900 meters / min.

[0079] S3: False twist: The obtained ultra-fast dry fiber pre-oriented yarn (POY yarn) is processed by false twist to obtain hollow structure fiber textured yarn; wherein, twist direction: S / Z, texturing speed: 500~600 m / min, draw ratio: 1.55~1.65, heating temperature: 175-185°, D / Y: 1.65~1.7;

[0080] S4: Fabric weaving: Hollow structure fiber textured yarns are woven into fabric using a loom to obtain primary fabric awaiting further processing;

[0081] S5: Alkali fiber opening: The primary fabric is placed in a 1.0% NaOH alkaline solution for alkali reduction treatment at a temperature of 100℃ and a reduction time of 70 min. The bath ratio is 1:20 to obtain a fabric containing ultra-fast drying fiber material with a porosity of 10%.

[0082] After the fabric is dyed, it is woven into sportswear.

[0083] Example 3

[0084] S1: Preparation of aerogel slices: Silica powder was prepared using fumed silica. The surface-modified silica powder was dispersed in butanediol solution at a mass ratio of 30% to obtain a pretreated silica dispersion. The silica dispersion was added during the synthesis of polybutylene terephthalate. The amount of fumed silica dispersion added was 4% of the polyester mass, and aerogel slices containing 1.2% fumed silica were finally prepared.

[0085] S2: Melt spinning: After the silica aerogel slices are dried and crystallized, they are fed into a screw extruder, melted at high temperature, and the melt is extruded. Impurities in the melt are filtered out. The melt passes through a spinneret with a hollow cross-section having a 3C-shaped structure. The melt is sprayed out around the structure and forms a hollow structure inside during cooling. After cooling, the fibers are bundled and wound to obtain ultra-fast dry fiber pre-oriented yarn (POY yarn) with a hollow cross-section. The fiber hollowness rate is 15% to 20%. The parameters of the spinning process are: spinning temperature: 255 to 260°C, spinning winding speed: 2800 to 2900 meters / min.

[0086] S3: False twist: The obtained ultra-fast dry fiber pre-oriented yarn (POY yarn) is processed by false twist to obtain hollow structure fiber textured yarn; wherein, twist direction: S / Z, texturing speed: 500~600 m / min, draw ratio: 1.55~1.65, heating temperature: 175-185°, D / Y: 1.65~1.7;

[0087] S4: Fabric weaving: Hollow structure fiber textured yarns are woven into fabric using a loom to obtain primary fabric awaiting further processing;

[0088] S5: Alkali fiber opening: The primary fabric is placed in a 0.8% NaOH alkaline solution for alkali reduction treatment at a temperature of 100℃ and a reduction time of 70 min. The bath ratio is 1:20 to obtain a fabric containing ultra-fast drying fiber material with a porosity of 10%.

[0089] After the fabric is dyed, it is woven into sportswear.

[0090] Example 4

[0091] S1: Preparation of aerogel slices: Silica powder was prepared using fumed silica. The surface-modified silica powder was dispersed in a propylene glycol solution at a mass ratio of 40% to obtain a pretreated silica dispersion. The silica dispersion was added during the synthesis of polypropylene terephthalate, with the amount of silica dispersion being 5% of the polyester mass, to prepare aerogel slices containing 2% fumed silica.

[0092] S2: Melt spinning: After the silica aerogel slices are dried and crystallized, they are fed into a screw extruder, melted at high temperature, and the melt is extruded. Impurities in the melt are filtered out. The melt passes through a spinneret with a hollow cross-section having a 4C-shaped structure. The melt is sprayed out around the structure and forms a hollow structure inside during cooling. After cooling, the fibers are bundled and wound to obtain ultra-fast dry fiber pre-oriented yarn (POY yarn) with a hollow cross-section. The fiber hollowness rate is 15% to 20%. The parameters of the spinning process are: spinning temperature: 255 to 260°C, spinning winding speed: 2800 to 2900 meters / min.

[0093] S3: False twist: The obtained ultra-fast dry fiber pre-oriented yarn (POY yarn) is processed by false twist to obtain hollow structure fiber textured yarn; wherein, twist direction: S / Z, texturing speed: 500~600 m / min, draw ratio: 1.55~1.65, heating temperature: 175-185°, D / Y: 1.65~1.7;

[0094] S4: Fabric weaving: Hollow structure fiber textured yarns are woven into fabric using a loom to obtain primary fabric awaiting further processing;

[0095] S5: Alkali fiber opening: The primary fabric is placed in a 1.2% NaOH alkaline solution for alkali reduction treatment at a temperature of 100℃ and a reduction time of 70 min. The bath ratio is 1:20. This includes fabrics containing ultra-fast drying fiber materials with a porosity of 10%.

[0096] After the fabric is dyed, it is woven into sportswear.

[0097] Comparative Example 1 is a fiber fabric with a hollow structure but no porous structure.

[0098] Comparative Example 2 is a fiber fabric with a porous structure but no hollow structure.

[0099]

[0100] As shown in the table above, the fabric made from the ultra-fast drying fiber material of this application can achieve an evaporation rate of over 0.4 g / hr, which far exceeds the national standard. Moreover, after multiple washes, the ultra-fast drying fiber material of this application still has an excellent evaporation rate, and the change rate of evaporation rate before and after washing is within 0.02 g / hr, indicating that the ultra-fast drying fiber material of this application has good structural stability.

[0101] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A method for preparing an ultra-fast drying fiber material, characterized in that, Includes the following steps: S1: Prepare silica aerogel slices. Prepare silica powder using fumed silica. Disperse the surface-modified silica powder in a diol solution to obtain a pretreated silica dispersion. The pretreated silica dispersion was added to the polyester chip synthesis process to obtain silica aerogel chips; S2: The silica aerogel chips are melt-spun, hollow-spun, and then cooled, bundled, and wound to obtain ultra-fast dry fiber pre-oriented yarns, wherein the hollowness of the ultra-fast dry fiber pre-oriented yarns is 15% to 20%; S3: Obtain hollow structure fiber textured yarn by false twisting ultra-fast dry fiber pre-oriented yarn; S4: Hollow structure fiber deformed yarn is placed in an alkaline solution for alkali reduction treatment to obtain ultra-fast drying fiber material; The alkali concentration for alkali opening is 0.6% to 1.2%, the temperature is 100 to 120°C, the time is 60 to 100 minutes, and the bath ratio of the fiber material to the alkali solution is 1:(20 to 50). The ultra-fast drying fiber material meets the following characteristics: the porosity of the ultra-fast drying fiber material is 6% to 12%; the evaporation rate of the ultra-fast drying fiber material before and after washing is greater than or equal to 0.35 g / hr; the resilience of the fiber material is greater than or equal to 0.

93. The diameter of the hollow structure is 3–20 μm; The mass ratio of the pretreated silica dispersion is 1% to 10%; the mass fraction of silica in the obtained silica aerogel slices is 1% to 5%.

2. The method for preparing an ultra-fast drying fiber material according to claim 1, characterized in that, It also includes the following steps: S31: Hollow structure fiber textured yarn is woven into fabric using a loom to obtain primary fabric; S41: The primary fabric is placed in an alkaline solution for alkali reduction treatment to obtain a fabric of ultra-fast drying fiber material.

3. The method for preparing an ultra-fast drying fiber material according to claim 1, characterized in that, The preparation method of this application satisfies the following characteristics: The parameters for melt spinning are: spinning temperature: 250~290℃; The bundle winding speed is 2500-3000 meters per minute. The parameters of the false twist are: twist direction: S / Z, texturing speed: 500-600 m / min, draw ratio: 1.55-1.65, heating temperature: 175-185°, D / Y: 1.65-1.

7.

4. A method for preparing an ultra-fast drying fiber material according to any one of claims 1 to 3, characterized in that, The steps also include weaving, dyeing, and spinning the ultra-fast drying fiber material into clothing.

5. A super-fast drying fiber material, prepared according to any one of claims 1 to 3, characterized in that, The ultra-fast drying fiber material uses fibers comprising a hollow structure and a fiber body, wherein the fiber body covers the hollow structure and the fiber body forms multiple pores, at least some of which are connected to the hollow structure.

6. The ultra-fast drying fiber material according to claim 5, characterized in that, The multiple holes exist independently of each other.

7. The ultra-fast drying fiber material according to claim 5, characterized in that, The pores are distributed in the fiber body or on the surface of the fiber body, and the multiple pores form a honeycomb structure or a sponge structure on the fiber body.

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