A quick-drying fabric for down jacket lining and its preparation method

Abstract

This invention belongs to the field of fabric technology, specifically disclosing a quick-drying fabric for down jacket linings and its preparation method. The quick-drying fabric comprises a base fabric and a composite fiber membrane laminated to one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. The base fabric is woven with modified polyurethane fibers as warp and cellulose acetate fibers as weft. The modified polyurethane fibers are obtained by mixing, melt extruding, and spinning the following raw materials in the indicated mass percentages: 85-95% polyurethane chips, 5-10% calcium titanate, 0.5-1% surfactant, and 0.5-1% dispersant. The quick-drying fabric obtained by this invention possesses excellent moisture-wicking and quick-drying properties as well as antibacterial properties, and the process is simple with good application prospects.

Description

Technical Field

[0001] This invention belongs to the field of fabric technology, and in particular relates to a quick-drying fabric for the lining of down jackets and its preparation method. Background Technology

[0002] Quick-drying fabrics have excellent properties of easily wicking away moisture and quickly dissipating it. When worn, they can guide sweat and moisture from the skin through the inner layer of the fabric to the outer layer. Then, the sweat spreads rapidly on the outer layer of the fabric and convects with the air to carry away the moisture, keeping the fabric dry and comfortable. For the fabric inside down jackets, in order to avoid the growth of bacteria and mites when wearing them, the fabric is also required to have moisture-wicking and quick-drying properties in the actual production process.

[0003] Regarding the development of quick-drying fabrics, existing technologies, such as patent number CN114250541B, disclose a quick-drying fabric. This fabric is obtained by innovatively designing the composition of a hydrophilic finishing liquid and immersing the fabric in the liquid. This allows sweat to be wicked away more quickly to the surface of the fabric, resulting in comfortable wear. However, the method of immersing the fabric in a hydrophilic finishing liquid does not guarantee that the fabric will maintain its quick-drying performance for a long time. With each wash, the quick-drying performance will decrease accordingly, resulting in poor performance. In addition, existing technologies also disclose a process of increasing the surface area of ​​the fibers by deforming the fiber cross-section, thereby improving the moisture-wicking properties. However, due to the complexity of the preparation process, it is difficult to apply on a large scale. Summary of the Invention

[0004] To address the aforementioned problems, the primary objective of this invention is to provide a quick-drying fabric for the lining of down jackets and a method for preparing the same.

[0005] The specific technical solution of the present invention includes:

[0006] As a first aspect of the present invention, a quick-drying fabric for the lining of a down jacket is provided, the quick-drying fabric comprising a base fabric and a composite fiber membrane laminated on one side of the base fabric, wherein the composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate.

[0007] The base fabric is obtained by weaving modified polyurethane fiber as warp yarn and cellulose acetate fiber as weft yarn. The modified polyurethane fiber is obtained by mixing, melt extrusion and spinning the following raw materials in the indicated mass percentages: 85-95% polyurethane chips, 5-10% calcium titanate, 0.5-1% surfactant and 0.5-1% dispersant.

[0008] As a further optimization of the present invention, the warp yarn weaving density is 45-55 yarns / cm, the weft yarn weaving density is 45-60 yarns / cm, and the weaving structure is plain weave.

[0009] As a further optimization of the present invention, the method for preparing the composite fiber membrane is as follows: first, the dried polyvinylidene fluoride powder is dissolved in a solvent, and after stirring and dissolving, a polyvinylidene fluoride spinning solution is obtained. The polyvinylidene fluoride spinning solution is electrospun into a fiber membrane. Then, the fiber membrane is wetted with ethanol and immersed in sodium alginate solution for 1-5 minutes. Finally, it is taken out and immersed in calcium lactate solution for 1-5 minutes to obtain the composite fiber membrane.

[0010] As a further optimization of the present invention, the electrospinning process parameters are as follows: electrospinning voltage of 15-19kV, temperature of 20±2℃, relative humidity of 45±5%, spinning solution flow rate of 1-3ml / h, and distance between the take-up roller and the needle of 10-15cm.

[0011] As a further optimization of the present invention, the polyvinylidene fluoride spinning solution has a mass fraction of 10-15%, the calcium lactate solution has a concentration of 0.02-0.05 mol / L, and the sodium alginate solution has a mass fraction of 0.2-0.5%.

[0012] As a second aspect of the present invention, a method for preparing a quick-drying fabric for the lining of a down jacket as described in any of the above-mentioned embodiments is also provided, comprising the following steps:

[0013] (1) To prepare modified polyurethane fiber, polyurethane chips, calcium titanate, surfactant and dispersant are mixed and stirred for 10-20 min, then mixed and granulated by twin screw extruder, air-cooled and pelletized to obtain masterbatch, and then the masterbatch is placed in melt spinning machine to spin and form modified polyurethane fiber.

[0014] (2) Prepare the base fabric by weaving modified polyurethane fiber as warp yarn and acetate fiber as weft yarn to obtain the base fabric;

[0015] (3) Composite fiber membrane obtained by modifying electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate.

[0016] (4) The composite fiber membrane is calendered and bonded to one side of the base fabric, and then shaped to obtain the quick-drying fabric used for the lining of down jackets.

[0017] As a further optimization of the present invention, step (2) is followed by a step of cleaning the base fabric with a heated hydrochloric acid solution with a mass fraction of 20%, and then washing, drying and ironing the base fabric with clean water.

[0018] In summary, the beneficial effects of the present invention are as follows:

[0019] (1) In this invention, modified polyurethane fiber is obtained by modifying polyurethane fiber with calcium titanate, which is used as warp yarn and cellulose acetate is used as weft yarn to weave a base fabric. The base fabric is acid washed to roughen its surface and form pits or cavities, thereby enhancing the capillary effect on the surface of the base fabric and improving the overall moisture absorption, quick-drying and antibacterial properties of the fabric.

[0020] (2) The present invention obtains a composite fiber membrane by modifying the electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate, thereby improving the hydrophilicity of the membrane. After the membrane and the base fabric are combined, there is a difference in hydrophilicity between the two. Water molecules can quickly conduct moisture from the base fabric side and then evaporate from the base membrane to the outside to complete the quick-drying process, thereby improving the moisture absorption and quick-drying performance of the fabric. Detailed Implementation

[0021] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] This embodiment provides a quick-drying fabric for the lining of down jackets. The quick-drying fabric includes a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. When this quick-drying fabric is used to prepare down jackets, the side of the base fabric that is not laminated with the composite fiber membrane is used as the skin-friendly side.

[0024] The base fabric is woven with modified polyurethane fiber as warp and cellulose acetate fiber as weft. The warp density is 45 threads / cm, the weft density is 45 threads / cm, and the weave structure is plain weave. The modified polyurethane fiber is obtained by mixing, melt extruding, and spinning the following raw materials in the indicated weight percentages: 93% polyurethane chips, 5% calcium titanate, 1% surfactant, and 1% dispersant.

[0025] The composite fiber membrane is prepared as follows: First, dried polyvinylidene fluoride powder is dissolved in a mixed solution of N,N-dimethylacetamide and acetone in equal mass ratio. After stirring and dissolving, a polyvinylidene fluoride spinning solution with a mass fraction of 10% is obtained. The polyvinylidene fluoride spinning solution is then electrospun into a fiber membrane. The electrospinning process parameters are: electrospinning voltage of 19kV, temperature of 20℃, relative humidity of 45%, spinning solution flow rate of 1ml / h, and distance between the take-up roller and the needle of 15cm. The obtained fiber membrane is then wetted with ethanol and immersed in a 0.5% sodium alginate solution for 5min. After that, it is taken out and immersed in a 0.05mol / L calcium lactate solution for 5min to obtain the composite fiber membrane.

[0026] The preparation method of quick-drying fabric includes the following steps:

[0027] (1) To prepare modified polyurethane fiber, polyurethane chips, calcium titanate, surfactant (sodium dodecylbenzenesulfonate in this example) and dispersant (dispersant NNO in this example) are mixed and stirred for 10 min. The mixture is then granulated and air-cooled by a twin-screw extruder to obtain masterbatch. The masterbatch is then placed in a melt spinning machine for spinning to obtain modified polyurethane fiber. The operating temperature of the melt spinning machine from the feed port to the spinneret can be conventionally adjusted in the polyurethane fiber production process according to the existing technology mastered by those skilled in the art, and is not limited here.

[0028] (2) Prepare the base fabric by weaving modified polyurethane fiber as warp yarn and acetate fiber as weft yarn to obtain the base fabric;

[0029] (3) Clean the base fabric with a heated 20% hydrochloric acid solution, then wash and dry the base fabric with clean water and iron it for later use;

[0030] (4) Composite fiber membrane obtained by modifying electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate.

[0031] (5) The composite fiber membrane is calendered and bonded to one side of the base fabric, and then shaped. Here, the process of calendering and bonding the membrane with the base fabric is an existing technology mastered by those skilled in the art, and is not limited here. The quick-drying fabric used for the lining of down jackets can be obtained.

[0032] Example 2

[0033] This embodiment provides a quick-drying fabric for the lining of down jackets. The quick-drying fabric includes a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. When this quick-drying fabric is used to prepare down jackets, the side of the base fabric that is not laminated with the composite fiber membrane is used as the skin-friendly side.

[0034] The base fabric is woven with modified polyurethane fiber as warp and cellulose acetate fiber as weft. The warp density is 55 threads / cm, and the weft density is 60 threads / cm. The weave structure is plain weave. The modified polyurethane fiber is obtained by mixing, melt extruding, and spinning the following raw materials in the indicated weight percentages: 88% polyurethane chips, 10% calcium titanate, 1% surfactant, and 1% dispersant.

[0035] The composite fiber membrane is prepared as follows: First, dried polyvinylidene fluoride powder is dissolved in a mixed solution of N,N-dimethylacetamide and acetone in equal mass ratio. After stirring and dissolving, a polyvinylidene fluoride spinning solution with a mass fraction of 15% is obtained. The polyvinylidene fluoride spinning solution is then electrospun into a fiber membrane. The electrospinning process parameters are the same as in Example 1. The obtained fiber membrane is then wetted with ethanol and immersed in a 0.5% sodium alginate solution for 5 minutes. After that, it is taken out and immersed in a 0.05 mol / L calcium lactate solution for 5 minutes to obtain the composite fiber membrane.

[0036] The preparation method of the quick-drying fabric is the same as in Example 1.

[0037] Example 3

[0038] This embodiment provides a quick-drying fabric for the lining of down jackets. The quick-drying fabric includes a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. When this quick-drying fabric is used to prepare down jackets, the side of the base fabric that is not laminated with the composite fiber membrane is used as the skin-friendly side.

[0039] The base fabric is woven with modified polyurethane fiber as warp and cellulose acetate fiber as weft. The warp density is 45 threads / cm, the weft density is 45 threads / cm, and the weave structure is plain weave. The modified polyurethane fiber is obtained by mixing, melt extruding, and spinning the following raw materials in the indicated weight percentages: 94% polyurethane chips, 5% calcium titanate, 0.5% surfactant, and 0.5% dispersant.

[0040] The composite fiber membrane is prepared as follows: First, dried polyvinylidene fluoride powder is dissolved in a mixed solution of N,N-dimethylacetamide and acetone in equal mass ratio. After stirring and dissolving, a polyvinylidene fluoride spinning solution with a mass fraction of 15% is obtained. The polyvinylidene fluoride spinning solution is then electrospun into a fiber membrane. The electrospinning process parameters are the same as in Example 1. The obtained fiber membrane is then wetted with ethanol and immersed in a 0.2% sodium alginate solution for 5 minutes. After that, it is taken out and immersed in a 0.02 mol / L calcium lactate solution for 5 minutes to obtain the composite fiber membrane.

[0041] The preparation method of the quick-drying fabric is the same as in Example 1.

[0042] Comparative Example 1

[0043] This comparative example provides a quick-drying fabric for the lining of down jackets. The quick-drying fabric includes a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate.

[0044] The base fabric is woven with polyurethane fibers as warp and acetate fibers as weft, with a warp density of 45 threads / cm and a weft density of 45 threads / cm, and a plain weave structure. The polyurethane fibers are obtained by mixing, melt extruding, and spinning the following raw materials in the indicated weight percentages: 99% polyurethane chips, 0.5% surfactant, and 0.5% dispersant.

[0045] The preparation method of the quick-drying fabric is the same as in Example 1.

[0046] Comparative Example 2

[0047] This comparative example provides a quick-drying fabric for the lining of down jackets. The quick-drying fabric includes a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is an electrospun polyvinylidene fluoride membrane.

[0048] The preparation method of electrospun polyvinylidene fluoride (PVDF) membrane is as follows: First, the dried PVDF powder is dissolved in a mixed solution of N,N-dimethylacetamide and acetone in equal mass ratio. After stirring and dissolving, a PVDF spinning solution is obtained. The mass fraction of the PVDF spinning solution is 10%. The PVDF spinning solution is then electrospun into a fiber membrane. The electrospinning process parameters are: electrospinning voltage of 19kV, temperature of 20℃, relative humidity of 45%, spinning solution flow rate of 1ml / h, and distance between the take-up roller and the needle of 15cm.

[0049] The base fabric is woven with modified polyurethane fibers as warp and cellulose acetate fibers as weft. The warp density is 45 threads / cm, and the weft density is 45 threads / cm. The weave structure is plain weave. The modified polyurethane fibers are obtained by mixing, melt extruding, and spinning the following raw materials in the indicated weight percentages: 93% polyurethane chips, 5% calcium titanate, 1% surfactant, and 1% dispersant.

[0050] The preparation method of the quick-drying fabric is the same as in Example 1.

[0051] Verification test

[0052] 1. The quick-drying fabrics prepared in Examples 1-3 and Comparative Examples 1-2 were used as samples. The antibacterial rate was determined according to FZ / T 73023-2006 "Standard for Antibacterial Knitted Fabrics". The moisture absorption and quick-drying properties were determined according to GB T 21655.1-2008 "Evaluation of the Moisture Absorption and Quick-drying Properties of Textiles". The results are shown in Table 1.

[0053] Table 1. Statistical Table of Test Results

[0054] ;

[0055] As can be seen from Table 1, the fabrics prepared in Examples 1-3 are superior to those in Comparative Examples 1-2 in terms of moisture absorption and quick-drying performance and antibacterial performance. Specifically, the difference between Comparative Example 1 and Example 1 is that the warp yarn of the base fabric in Comparative Example 1 is unmodified polyurethane fiber. According to the results, the moisture absorption and quick-drying performance of Comparative Example 1 is lower than that of Example 1, but its antibacterial performance is significantly lower than that of Example 1. It can be seen that the use of modified polyurethane fiber has a positive effect on improving the antibacterial performance of the fabric.

[0056] The difference between Comparative Example 2 and Example 1 is that the composite fiber membrane used in Comparative Example 2 is an unmodified electrospun polyvinylidene fluoride membrane. According to the results, Comparative Example 2 is significantly lower than Example 1 in terms of moisture absorption and quick-drying performance and antibacterial properties. It can be seen that the modification of electrospun polyvinylidene fluoride membrane has a positive effect on improving the moisture absorption and quick-drying performance and antibacterial properties of the fabric.

[0057] 2. To further investigate the effect of modified polyurethane fibers on the properties of the base fabric, the following comparative examples were set up:

[0058] Comparative Example 3

[0059] The only difference between this comparative example and Example 1 is that the modified polyurethane fiber was obtained by mixing, melt extruding, and spinning the following raw materials in the following mass percentages: 93% polyurethane chips, 5% calcium carbonate, 1% surfactant (sodium dodecylbenzene sulfonate), and 1% dispersant (dispersant NNO).

[0060] Comparative Example 4

[0061] The only difference between this comparative example and Example 1 is that the modified polyurethane fiber was obtained by mixing, melt extruding, and spinning the following raw materials in the following mass percentages: 93% polyurethane chips, 5% calcium silicate, 1% surfactant (sodium dodecylbenzene sulfonate), and 1% dispersant (dispersant NNO).

[0062] Comparative Example 5

[0063] The only difference between this comparative example and Example 1 is that step (3) is not performed in the preparation method of the quick-drying fabric.

[0064] The quick-drying fabrics prepared in Comparative Examples 3-5 were used as samples. The antibacterial rate was determined according to FZ / T 73023-2006 "Standard for Antibacterial Knitted Fabrics". The moisture absorption and quick-drying properties were determined according to GB T 21655.1-2008 "Evaluation of Moisture Absorption and Quick-drying Properties of Textiles". The results were compared with those of Example 1 and are shown in Table 2.

[0065] Table 2. Statistical Table of Test Results

[0066] ;

[0067] As can be seen from Table 2, the fabric prepared in Example 1 has better moisture absorption, quick-drying properties and antibacterial properties than Comparative Examples 3-4. The difference between the three lies in the different modified components. Example 1 uses calcium titanate, while Comparative Examples 3-4 use calcium carbonate and calcium silicate, respectively. The data comparison shows that calcium titanate and calcium carbonate have similar effects in improving the moisture absorption and quick-drying properties of the fabric, but calcium titanate has a better effect in improving the antibacterial properties of the fabric. Calcium silicate is not as effective as Example 1 in improving both the moisture absorption and quick-drying properties and the antibacterial properties of the fabric.

[0068] In addition, the difference between Comparative Example 5 and Example 1 is that Comparative Example 5 omitted the acid washing step when preparing the fabric. From the data comparison, it can be seen that Example 1 performed the acid washing step, and the moisture absorption and quick-drying properties of the fabric were improved to a certain extent. This is because when the base fabric is cleaned with heated hydrochloric acid solution, the hydrochloric acid acts on the surface of the base fabric and the calcium titanate component in the modified polyurethane fiber, causing a certain amount of calcium titanate to dissolve. At this time, a certain amount of void structure is generated on the surface of the base fabric, which strengthens its capillary action and enhances its own moisture absorption and wicking properties.

[0069] 3. The impact of composite fiber membranes on fabric performance will be further investigated, with the following comparative examples:

[0070] Comparative Example 6

[0071] The only difference between this comparative example and Example 1 is that the composite fiber membrane is obtained by modifying the electrospun polyvinylidene fluoride membrane with sodium alginate and calcium chloride, and the preparation method of the composite fiber membrane is the same as that of Example 1.

[0072] Comparative Example 7

[0073] The only difference between this comparative example and Example 1 is that the composite fiber membrane is obtained by modifying the electrospun polyvinylidene fluoride membrane with sodium alginate. The preparation method of the composite fiber membrane is as follows: firstly, the dried polyvinylidene fluoride powder is dissolved in a mixed solution of N,N-dimethylacetamide and acetone in equal mass ratio. After stirring and dissolving, a polyvinylidene fluoride spinning solution with a mass fraction of 10% is obtained. The polyvinylidene fluoride spinning solution is then electrospun into a fiber membrane. The electrospinning process parameters are: electrospinning voltage of 19kV, temperature of 20℃, relative humidity of 45%, spinning solution flow rate of 1ml / h, and distance between the take-up roller and the needle of 15cm. After wetting the obtained fiber membrane with ethanol, it is immersed in a 0.5% sodium alginate solution for 10min to obtain the composite fiber membrane.

[0074] The quick-drying fabrics prepared in Comparative Examples 6-7 were used as samples. The antibacterial rate was determined according to FZ / T 73023-2006 "Standard for Antibacterial Knitted Fabrics". The moisture absorption and quick-drying properties were determined according to GB T 21655.1-2008 "Evaluation of Moisture Absorption and Quick-drying Properties of Textiles". The results were compared with those of Example 1 and are shown in Table 3.

[0075] Table 3. Statistical Table of Test Results

[0076] ;

[0077] As shown in Table 3, the fabric prepared in Example 1 exhibits better moisture absorption, quick-drying properties, and antibacterial properties than Comparative Examples 6-7. The difference lies in the different modifying components incorporated into the composite fiber membrane. Example 1 utilizes sodium alginate and calcium lactate, Comparative Example 6 uses sodium alginate and calcium chloride, and Comparative Example 7 uses only sodium alginate. The data comparison shows that the fabric in Example 1 achieves better moisture absorption, quick-drying properties, and antibacterial properties. This is because the combined modification of the polytetrafluoroethylene membrane with sodium alginate and calcium lactate results in the deposition of calcium alginate on the membrane surface, enhancing the membrane's hydrophilicity. This creates a difference in hydrophilicity between the membrane and the base fabric, allowing water molecules to quickly wick moisture from the base fabric side and then evaporate from the base membrane to the outside, completing the quick-drying process and improving the fabric's moisture absorption and quick-drying properties. To verify this conclusion, the contact angle of the composite fiber membranes obtained in Example 1 and Comparative Examples 6-7 was subsequently tested at room temperature using a contact angle meter. The membrane was fixed on a glass slide, and 3 μL of liquid was dropped into it. The change in contact angle was recorded by a camera over the entire time (10 min). Each membrane sample was measured 3 times to minimize error. Finally, the contact angle of the composite fiber membrane obtained in Example 1 was 103°, which is a certain degree of decrease compared to 125° and 137° of Comparative Examples 6-7. The hydrophilicity of the composite fiber membrane obtained in Example 1 is better than that of Comparative Examples 6-7.

[0078] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various improvements without departing from the concept of the present invention, and these improvements all fall within the scope of protection of the present invention.

Claims

1. A quick-drying fabric for the lining of down jackets, characterized in that, The quick-drying fabric comprises a base fabric and a composite fiber membrane laminated on one side of the base fabric. The composite fiber membrane is obtained by modifying an electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. The base fabric is obtained by weaving modified polyurethane fiber as warp yarn and cellulose acetate fiber as weft yarn. The modified polyurethane fiber is obtained by mixing, melt extruding, and spinning the following raw materials in the indicated mass percentages: 85-95% polyurethane chips, 5-10% calcium titanate, 0.5-1% surfactant, and 0.5-1% dispersant, with the sum of all components being 100%. The method for preparing the composite fiber membrane is as follows: First, the dried polyvinylidene fluoride powder is dissolved in a solvent and stirred to obtain a polyvinylidene fluoride spinning solution. The polyvinylidene fluoride spinning solution is electrospun into a fiber membrane. Then, the fiber membrane is wetted with ethanol and immersed in sodium alginate solution for 1-5 minutes. Finally, it is taken out and immersed in calcium lactate solution for 1-5 minutes to obtain the composite fiber membrane.

2. The quick-drying fabric for the lining of down jackets according to claim 1, characterized in that, The warp yarns have a weaving density of 45-55 yarns / cm, the weft yarns have a weaving density of 45-60 yarns / cm, and the weave structure is plain.

3. The quick-drying fabric for the lining of down jackets according to claim 1, characterized in that: The electrospinning process parameters are as follows: electrospinning voltage is 15-19kV, temperature is 20±2℃, relative humidity is 45±5%, spinning solution flow rate is 1-3ml / h, and the distance between the take-up roller and the needle is 10-15cm.

4. The quick-drying fabric for the lining of down jackets according to claim 1, characterized in that, The polyvinylidene fluoride spinning solution has a mass fraction of 10-15%, the calcium lactate solution has a concentration of 0.02-0.05 mol / L, and the sodium alginate solution has a mass fraction of 0.2-0.5%.

5. A method for preparing a quick-drying fabric for the lining of down jackets as described in any one of claims 1-4, characterized in that, Includes the following steps: (1) To prepare modified polyurethane fiber, polyurethane chips, calcium titanate, surfactant and dispersant are mixed and stirred for 10-20 min, then mixed and granulated by twin screw extruder, air-cooled and pelletized to obtain masterbatch, and then the masterbatch is placed in melt spinning machine to spin and form modified polyurethane fiber. (2) Prepare the base fabric by weaving modified polyurethane fiber as warp yarn and acetate fiber as weft yarn to obtain the base fabric; (3) Composite fiber membrane obtained by modifying electrospun polyvinylidene fluoride membrane with sodium alginate and calcium lactate. (4) The composite fiber membrane is calendered and bonded to one side of the base fabric, and then shaped to obtain the quick-drying fabric used for the lining of down jackets.

6. The method for preparing a quick-drying fabric for the lining of a down jacket according to claim 5, characterized in that, Step (2) is followed by cleaning the base fabric with a heated 20% hydrochloric acid solution, then rinsing and drying the base fabric with water and ironing it.