A kind of anti-down textile fabric and its preparation method and application

Abstract

The present invention belongs to the field of textile material technology and provides a down-proof textile fabric, a preparation method, and an application thereof. The down-proof textile fabric comprises a base fabric and a coating disposed on the base fabric. The raw materials for preparing the coating include a down-proof finishing agent. The down-proof finishing agent comprises the following components, calculated by mass percentage: 12% to 20% polyurethane resin, 3% to 8% crosslinking agent, 10% to 12% surfactant, 10% to 15% dispersant, 4% to 10% adhesive, and 35% to 65% water. The weight-average molecular weight of the polyurethane resin is 50,000 to 70,000 g / mol. The down-proof textile fabric provided by the present invention has good mechanical properties, a low grammage, and a down-proofing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of textile materials, and particularly relates to a down-proof textile fabric and a preparation method and application thereof. Background Art

[0002] With the continuous advancement of technology and the increasing demand for functionality from consumers, the textile industry faces enormous challenges in material innovation. Especially in the fields of outdoor sports, military equipment, and high-end fashion, ultra-light, high-strength textile fabrics have become an important direction for improving product performance and user experience. Traditional textile fabrics often face a certain balance problem between weight and strength: lightweight fabrics usually cannot provide sufficient strength, while high-strength fabrics are often bulky, affecting wearing comfort and sports performance. Currently, there are some lightweight, high-performance fabrics on the market, but they still have certain shortcomings in strength, durability, and down-proof properties. Especially in applications in extreme environments, it is still difficult to meet consumers' multiple demands for safety, durability, and comfort.

[0003] Down jackets are becoming more and more light and thin. The method of adding lining cloth to prevent down is increasingly unable to meet people's demand for light, thin and soft down jackets. When traditional textile fabrics are used to make down jackets, down easily leaks out from the pores of the textile fabrics, and the anti-down performance is poor.

[0004] CN114575016A discloses a method for preparing a down-proof, lightweight fabric, which comprises the following steps: (1) grey fabric weaving: the warp and weft yarns are made of ultra-fine polyester filament fibers with specifications of 33D / 120F~50D / 216F, and are densely interwoven in a 1:1 plain weave; (2) pre-dyeing and finishing treatment: the grey fabric woven in step (1) is subjected to a descaling and bleaching treatment, and a loosening process is adopted; (3) dyeing: the grey fabric treated in step (2) is dyed by a dyeing machine, and then dried and shaped; (4) calendering treatment; (5) air softening treatment; and (6) finished product inspection. Although the down-proof, lightweight fabric prepared by this technical solution can achieve softness and good down-proof effect, its gram weight is 58~62g / m 2 , still not thin and light enough.

[0005] CN101629346A discloses an ultra-lightweight leisure sports fabric and a production method thereof. The warp and weft yarns of the ultra-lightweight leisure sports fabric are all composed of 10-20D chemical fiber yarns, and the finished product weight of the fabric is 20-80 g / m 2 , the anti-down property is above level 4. Although the ultra-lightweight casual sports fabric provided by this technical solution can achieve lower weight and better anti-down property, its tear strength is lower.

[0006] Therefore, it is necessary to develop a high-performance fabric that has good mechanical properties, low weight and anti-down drilling effect. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the present invention aims to provide a down-proof textile fabric and its preparation method and application. The down-proof textile fabric has good mechanical properties, low weight and down-proof effect.

[0008] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a down-proof textile fabric, comprising a base fabric and a coating provided on the base fabric; the raw materials for preparing the coating comprise a down-proof finishing agent, and the down-proof finishing agent comprises the following components by mass percentage: 12% to 20% (e.g., 13%, 14%, 15%, 16%, 17%, 18% or 19%) of a polyurethane resin, 3% to 8% (e.g., 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7% or 7.5%) of a cross-linking agent, 10% to 12% (e.g., 10.2%, 10.4%, 11.6%, 12.8%, 13.9%, 14.0%, 15.7%, 16.0%, 17.1%, 18.1% or 19.0%) of a surfactant. 0.6%, 10.8%, 11%, 11.2%, 11.4%, 11.6% or 11.8%, etc.), dispersant 10% to 15% (for example, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14% or 14.5%, etc.), binder 4% to 10% (for example, 5%, 6%, 7%, 8% or 9%, etc.) and water 35% to 65% (for example, 38%, 41%, 44%, 47%, 50%, 53%, 56%, 59% or 62%, etc.); the weight average molecular weight of the polyurethane resin is 50,000 to 70,000 g / mol (e.g., 52000 g / mol, 54000 g / mol, 56000 g / mol, 58000 g / mol, 60000 g / mol, 62000 g / mol, 64000 g / mol, 66000 g / mol or 68000 g / mol, etc.), more preferably 50000-60000 g / mol.

[0010] In the present invention, the weight-average molecular weight of the polyurethane resin is 50,000-70,000 g / mol. If the weight-average molecular weight of the polyurethane resin is too low, the molecular chain of the polyurethane resin is short, and the intermolecular force is weak, which will lead to low mechanical properties of the coating and the anti-down textile fabric formed. The coating is prone to cracking, wear and other problems when subjected to external forces, and the anti-down effect is poor. If the weight-average molecular weight of the polyurethane resin is too high, the viscosity of the polyurethane resin and the anti-down finishing agent will increase, and the formed anti-down textile fabric will become brittle, resulting in a decrease in the tear strength of the anti-down textile fabric.

[0011] In the present invention, the mass percentage of the polyurethane resin in the anti-down finishing agent is 12% to 20%. If the mass percentage of the polyurethane resin is too low, the anti-down finishing agent cannot achieve good wrapping and bonding effects, and it is difficult to form a complete and strong coating on the surface of the base fabric, which will cause the strength of the coating to deteriorate, the tear strength of the anti-down textile fabric to decrease, and the anti-down drilling effect to decrease. If the mass percentage of polyurethane resin is too high, excessive polyurethane resin will reduce the flexibility of the coating and increase the hardness. Excessive hardness will make the coating prone to cracking when subjected to dynamic stress or bending, thereby reducing wear resistance. When the mass percentage of polyurethane resin in the anti-down finishing agent is 15%~20%, and the weight-average molecular weight of the polyurethane resin is controlled at 50,000~60,000g / mol, a uniform, dense coating with good flexibility and strength can be formed on the surface of the base fabric. Within this mass percentage and weight-average molecular weight range, the interaction between polyurethane molecules reaches a better balance, which ensures that the coating has sufficient cohesion and adhesion, and has a certain elasticity, can effectively resist wear and tear from external forces, improve the wear resistance and strength of anti-down textile fabrics, greatly enhance the anti-down drilling effect, and achieve better performance.

[0012] In the present invention, by controlling the weight average molecular weight and content of the polyurethane resin in the anti-down finishing agent within a specific range, it is helpful to improve the anti-down drilling effect while maintaining good mechanical properties.

[0013] Preferably, the base fabric has a woven structure formed by interlacing single and double ultra-fine denier yarns.

[0014] In the present invention, the woven structure formed by interweaving single and double lines of the superfine denier yarn is as follows: Figure 1 As shown, the ultra-fine denier yarn includes a vertical line group and a transverse line group, the vertical line group includes a plurality of vertical single line groups 1 and a plurality of vertical double line groups 2, the transverse line group includes a plurality of horizontal single line groups 3 and a plurality of horizontal double line groups 4, the vertical single line group 1 is arranged between the two vertical double line groups 2, the horizontal single line group 3 is arranged between the two horizontal double line groups 4, the horizontal single line group 3 and the horizontal double line group 4 respectively pass through the upper side or the lower side of the multiple vertical single line groups 1 and the vertical double line groups 2 to achieve the weaving purpose.

[0015] In the present invention, the woven structure formed by the interlacing of single and double lines of the ultrafine denier yarn makes the anti-down textile fabric have higher tearing strength; the anti-down finishing agent is prepared by compounding polyurethane resin, cross-linking agent, surfactant, dispersant, adhesive and water, and the anti-down finishing agent is coated on the base fabric to prepare a coating, which can improve the anti-down drilling effect while maintaining good mechanical properties and low gram weight.

[0016] Preferably, the polyurethane resin includes any one of polyester polyurethane, polycarbonate polyurethane or polyether polyurethane, or a combination of at least two of them.

[0017] Preferably, the crosslinking agent includes any one of polysiloxane, blocked isocyanate or epoxy silane, or a combination of at least two thereof.

[0018] Preferably, the dispersant includes any one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester, naphthalene sulfonic acid dispersant or polycarboxylic acid dispersant, or a combination of at least two thereof.

[0019] Preferably, the adhesive includes any one of a polyurethane adhesive, a polyvinyl acetate adhesive, a polyacrylate adhesive or a butadiene adhesive, or a combination of at least two of them.

[0020] Preferably, the specification of the ultrafine denier yarn is 15-20 D, such as 16 D, 17 D, 18 D or 19 D.

[0021] Preferably, the ultra-fine yarn is made of nylon or polyethylene.

[0022] Preferably, the nylon is nylon 66.

[0023] Preferably, the polyethylene comprises ultra-high molecular weight polyethylene.

[0024] Preferably, the number average molecular weight of the ultra-high molecular weight polyethylene is ≥1 million, for example, 1.5 million, 2 million, 2.5 million, 3 million, 3.5 million or 4 million.

[0025] Preferably, the weight of the anti-down textile fabric is 30-40 g / m 2 , for example 31 g / m 2 , 32 g / m 2 , 33 g / m 2 , 34 g / m 2 , 35 g / m 2 , 36 g / m 2 , 37 g / m 2 , 38 g / m 2 or 39 g / m 2 wait.

[0026] Preferably, the coating has a gram weight of 3 to 10 g / m 2 , for example 4 g / m 2 , 5 g / m 2 , 6 g / m 2 , 7 g / m 2 , 8 g / m 2 or 9 g / m2 wait.

[0027] In the present invention, the gram weight of the coating is calculated by subtracting the gram weight of the base fabric from the gram weight of the down-proof textile fabric.

[0028] In a second aspect, the present invention provides a method for preparing the down-proof textile fabric as described in the first aspect, the preparation method comprising the following steps: coating the down-proof finishing agent on the surface of the base fabric, and pressing to obtain the down-proof textile fabric.

[0029] Preferably, the preparation method comprises the following steps:

[0030] (1) The ultra-fine denier yarn is interwoven with single and double yarns to obtain the grey cloth.

[0031] (2) The grey cloth obtained in step (1) is pre-treated, dyed and shaped to obtain a base cloth.

[0032] (3) coating the anti-down finishing agent on the surface of the base fabric prepared in step (2), and pressing the base fabric to obtain the anti-down textile fabric.

[0033] Preferably, the pretreatment in step (2) includes desizing, scouring, bleaching and mercerizing.

[0034] In the present invention, desizing is used to remove the size on the grey cloth, thereby weakening the bonding force between the fibers of the ultrafine denier yarn and facilitating subsequent processing; scouring is performed by heating and using chemical agents to remove natural impurities and oil stains on the grey cloth, thereby improving the whiteness and water absorption of the grey cloth; bleaching is performed to further remove pigments and impurities on the grey cloth to achieve the desired whiteness; mercerizing is performed by chemical treatment or mechanical stretching to impart gloss to the surface of the grey cloth and improve its dimensional stability and wrinkle resistance. The desizing, scouring, bleaching, mercerizing, and dyeing can be performed by methods known to those skilled in the art or in the prior art. The selection of methods will not affect the mechanical properties and anti-down effect of the resulting down-proof textile fabric, and is not specifically limited here.

[0035] Preferably, the shaping in step (2) includes shaping by hot pressing.

[0036] Preferably, the hot pressing temperature is 190-210°C (for example, 192°C, 194°C, 196°C, 198°C, 200°C, 202°C, 204°C, 206°C, or 208°C), the hot pressing pressure is 20-30 kPa (for example, 21 kPa, 22 kPa, 23 kPa, 24 kPa, 25 kPa, 26 kPa, 27 kPa, 28 kPa, or 29 kPa), and the hot pressing time is 30-60 seconds (for example, 33 seconds, 36 seconds, 39 seconds, 42 seconds, 45 seconds, 48 seconds, 51 seconds, 54 seconds, or 57 seconds).

[0037] In the present invention, the shape and size of the grey cloth can be fixed by hot pressing, thereby preventing deformation during use.

[0038] Preferably, step (3) further includes a drying step after the pressing.

[0039] In a third aspect, the present invention provides a down jacket, comprising the down-proof textile fabric as described in the first aspect.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The anti-down textile fabric described in the present invention includes a base fabric and a coating arranged on the base fabric; the raw materials for preparing the coating include an anti-down finishing agent, and the anti-down finishing agent is prepared by compounding a polyurethane resin, a cross-linking agent, a surfactant, a dispersant, an adhesive and water, and is coated on the surface of the base fabric to prepare a coating, which can improve the anti-down drilling effect while maintaining good mechanical properties and a lower gram weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of a weaving structure formed by interweaving single and double ultra-fine denier yarns;

[0043] Among them, 1-vertical single-line group; 2-vertical double-line group; 3-horizontal single-line group; 4-horizontal double-line group;

[0044] Figure 2 It is a structural diagram of down-proof textile fabric;

[0045] Among them, 5-coating; 6-base fabric. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described below by way of specific embodiments. It should be understood by those skilled in the art that the embodiments are merely to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0047] The sources of some components in the following examples and comparative examples are as follows:

[0048] (1) Polyurethane resin:

[0049] Polyurethane resin A, polyester polyurethane, weight average molecular weight of 50000~60000 g / mol, brand FS1530, manufacturer is Anhui Femtosecond New Materials Co., Ltd.

[0050] Polyurethane resin B, polyester polyurethane, weight average molecular weight of 60000~70000 g / mol, brand FS-108C, manufacturer is Anhui Femtosecond New Materials Co., Ltd.

[0051] Polyurethane resin C, polyester polyurethane, weight average molecular weight of 30000~40000 g / mol, brand FS1209, manufacturer is Anhui Femtosecond New Materials Co., Ltd.

[0052] Polyurethane resin D, polyester polyurethane, weight-average molecular weight of 73,000 g / mol, brand name Refober® SF-2400, manufacturer: Guangzhou Haoyi New Materials Technology Co., Ltd.

[0053] (2) Cross-linking agent:

[0054] Polysiloxane, model 110-18-9, manufacturer is Hubei Xinghengye.

[0055] (3) Surfactants:

[0056] Secondary alkyl sulfonate, brand name SAS60, manufactured by Jinan Daorong Chemical Co., Ltd.

[0057] (4) Dispersant:

[0058] Fatty alcohol polyoxyethylene ether, brand name 68439-49-6, manufacturer is Xingtai Lantian.

[0059] Fatty acid polyoxyethylene ester, brand name CAS No.4119-82-8, manufacturer: Wuhan Penglei Biotechnology.

[0060] Naphthalene sulfonic acid dispersant, brand name DYWELL DN, manufacturer is Xingtianwai Chemical (Shanghai) Co., Ltd.

[0061] (5) Adhesive:

[0062] Polyurethane adhesive: water-based polyurethane resin emulsion, brand PU7108, manufacturer: Shanghai Belt New Material Technology Co., Ltd. Example 1

[0063] This embodiment provides a down-proof textile fabric and a preparation method thereof, wherein the down-proof textile fabric is as follows: Figure 2 As shown, it includes a base fabric 6 and a coating 5 arranged on the base fabric.

[0064] The preparation method comprises the following steps:

[0065] (1) Ultra-fine denier yarn (nylon 66 yarn, specification 15D, manufacturer Yongrong Jinjiang, brand DTY) is warped as follows Figure 1 The single and double lines are interwoven to prepare the grey cloth, and the weight of the grey cloth is 30 g / m 2 ;

[0066] (2) The grey cloth obtained in step (1) is sequentially desized, scour, bleached, mercerized, and dyed, and then hot-pressed for 50 seconds at a temperature of 200° C. and a pressure of 25 kPa to form the base cloth;

[0067] The desizing process includes treating the grey cloth with a caustic soda solution (the concentration of caustic soda is 12 g / L) at 95°C for 30 minutes to remove the size, followed by thorough water washing.

[0068] The scouring comprises treating the grey cloth with a scouring solution prepared by using a caustic soda solution and a surfactant (alcohol ether carboxylate, brand AEC 240, manufactured by Guangzhou Xumei Textile Chemical Research Co., Ltd.) at 95°C for 60 minutes to remove fiber impurities, followed by thorough water washing. The scouring solution has a caustic soda concentration of 0.6% by mass and a surfactant concentration of 0.3% by mass.

[0069] The bleaching process includes treating the grey cloth with a hydrogen peroxide solution (the concentration of hydrogen peroxide is 5 g / L and the pH is 10.5) at 92°C for 40 minutes to improve the whiteness, followed by thorough washing.

[0070] The mercerizing step includes treating the grey cloth with a caustic soda solution (the mass percentage concentration of caustic soda is 25%) at 25°C for 30 minutes to enhance the gloss and dimensional stability, followed by thorough washing.

[0071] The above dyeing includes using disperse dye (brand E-3RL, manufacturer Jinan Xucheng Dye Chemical Co., Ltd.) to prepare a dye solution with a mass percentage concentration of 5%, a bath ratio of 1:50, dyeing at 60°C for 60 minutes, then adding sodium chloride (the mass percentage concentration of sodium chloride in the dye solution is 2%) to the dye solution to promote dyeing at 60°C for 30 minutes, then adding soda ash (the mass percentage concentration of soda ash in the dye solution is 1%) to the dye solution for fixing at 60°C for 30 minutes, and finally using a soaping agent aqueous solution to treat at 100°C for 5 minutes for soaping to remove floating color, wherein the mass concentration of the soaping agent (brand Argacel TCW) in the soaping agent solution is 3g / L.

[0072] (3) Apply the anti-down finishing agent on the surface of the base fabric at a coating amount of 10g / m 2 , and pressed by a calender to make it tightly combined with the grey cloth, the pressing pressure is 200°C, the pressure is 25 kPa, the time is 50 seconds, and it is dried at 100°C for 20 min to obtain the anti-velvet textile fabric.

[0073] The above-mentioned anti-velvet finishing agent includes the following components in percentage by mass: polyurethane resin (polyurethane resin A) 15%, crosslinking agent (polysiloxane) 5%, surfactant (secondary alkyl sulfonate) 11%, dispersant (fatty alcohol polyoxyethylene ether) 13%, adhesive (polyurethane adhesive) 6% and water 50%. Example 2

[0074] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and Example 1 is that the down-proof finishing agent includes the following components, calculated by mass percentage: 16% of a polyurethane resin (polyurethane resin A), 4% of a cross-linking agent (polysiloxane), 12% of a surfactant (secondary alkyl sulfonate), 11% of a dispersant (polyoxyethylene fatty acid ester), 10% of an adhesive (polyurethane adhesive), and 47% of water. Other conditions are the same as those in Example 1. Example 3

[0075] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and Example 1 is that the down-proof finishing agent includes the following components, calculated by mass percentage: 14% polyurethane resin (polyurethane resin A), 8% cross-linking agent (polysiloxane), 10% surfactant (secondary alkyl sulfonate), 15% dispersant (naphthalene sulfonic acid dispersant), 4% adhesive (polyurethane adhesive) and 49% water. Other conditions are the same as in Example 1. Example 4

[0076] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and embodiment 1 is that the ultrafine denier yarn in step (1) is polyethylene yarn with a specification of 15D, manufactured by Dongguan Lanxin New Material Weaving Technology Co., Ltd., with a brand name of LX254. Other conditions are the same as those in embodiment 1. Example 5

[0077] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and Example 1 is that the mass percentage of the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is adjusted to 12%, and the mass percentage of water is correspondingly adjusted to 53%. Other conditions are the same as those in Example 1. Example 6

[0078] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and Example 1 is that the mass percentage of the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is adjusted to 20%, and the mass percentage of water is correspondingly adjusted to 45%. Other conditions are the same as those in Example 1. Example 7

[0079] This embodiment provides a down-proof textile fabric and a preparation method thereof. The only difference between this embodiment and Example 1 is that the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is replaced with a polyurethane resin (polyurethane resin B) of the same mass, and other conditions are the same as those in Example 1.

[0080] Comparative Example 1

[0081] This comparative example provides a down-proof textile fabric and a preparation method thereof, which differs from Example 1 only in that the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is replaced with a polyurethane resin (polyurethane resin C) of the same mass, and other conditions are the same as Example 1.

[0082] Comparative Example 2

[0083] This comparative example provides a down-proof textile fabric and a preparation method thereof, which differs from Example 1 only in that the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is replaced with a polyurethane resin (polyurethane resin D) of the same mass, and other conditions are the same as Example 1.

[0084] Comparative Example 3

[0085] This comparative example provides a down-proof textile fabric and a preparation method thereof. The only difference between the comparative example and Example 1 is that the mass percentage of the polyurethane resin (polyurethane resin A) in the down-proof finishing agent is adjusted to 10%, and the mass percentage of water is correspondingly adjusted to 55%. Other conditions are the same as those in Example 1.

[0086] Comparative Example 4

[0087] This comparative example provides a textile fabric and a preparation method thereof, which differs from Example 1 only in that the textile fabric is a base fabric, the preparation method does not include step (3), and other conditions are the same as those in Example 1.

[0088] The following tests were performed on the down-proof textile fabrics provided in Examples 1 to 7 and Comparative Examples 1 to 3, as well as the textile fabric provided in Comparative Example 4:

[0089] (1) Tear strength: The test shall be carried out in accordance with GB / T 3917.2-2009 “Tear properties of textile fabrics — Part 2: Determination of tear strength of trouser-shaped test specimens (single tear)”.

[0090] (2) Down-proof performance: The test shall be carried out in accordance with GB / T 12705.1-2009 “Test method for down-proof properties of textile fabrics - Part 1: Friction method”.

[0091] (3) Weight: Weighing is performed using a GS-323 electronic balance.

[0092] The test results are shown in Table 1 below:

[0093] Table 1

[0094]

[0095] It can be seen from the contents of Table 1 that the down-proof textile fabrics provided in Examples 1 to 7 have a down-proof number of ≤4, a warp tear strength ≥21 N, and a weft tear strength ≥20 N, and have excellent down-proof effect while maintaining good mechanical properties and low weight.

[0096] Compared with Example 1, if the weight average molecular weight of the polyurethane resin is too low (Comparative Example 1), the obtained down-proof textile fabric is prone to cracking and wear when subjected to external force, resulting in a decrease in the down-proof performance; if the weight average molecular weight of the polyurethane resin is too high (Comparative Example 2), the obtained down-proof textile fabric becomes brittle, resulting in a significant decrease in the tear strength of the down-proof textile fabric; it can be seen that the down-proof textile fabric obtained when the weight average molecular weight of the polyurethane resin is 50,000~70,000 g / mol has better performance.

[0097] Compared with Example 1, if the mass percentage of the polyurethane resin is too low (Comparative Example 3), the anti-down finishing agent cannot achieve good wrapping and bonding effects, and it is difficult to form a complete and strong coating on the surface of the base fabric, which will lead to the deterioration of the strength of the coating, the decrease in the tear strength of the anti-down textile fabric, and the decrease in the anti-down drilling effect.

[0098] Compared with Example 1, if the anti-down finishing agent is not used to prepare the coating (Comparative Example 4), the anti-down performance of the obtained textile fabric is poor.

[0099] While the present invention is illustrated by the above-described embodiments, the present invention is not limited to the above-described process steps, and implementation of the present invention is not necessarily dependent on the above-described process steps. Those skilled in the art will appreciate that any improvements to the present invention, equivalent substitutions for the raw materials used, additions of auxiliary components, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A down-proof textile fabric, characterized in that: The down-proof textile fabric comprises a base fabric and a coating provided on the base fabric; The raw materials for preparing the coating include an anti-down finishing agent, which is composed of the following components by mass percentage: Composition: polyurethane resin 12%-20%, crosslinking agent 3%-8%, surfactant 10%-12%, dispersant 10%-15%, binder 4%-10% and water 35%-59%; the weight average molecular weight of the polyurethane resin is 50,000-60,000 g / mol; The polyurethane resin is polyester polyurethane; The cross-linking agent is polysiloxane; The dispersant is any one of fatty alcohol polyoxyethylene ether, fatty acid polyoxyethylene ester or naphthalene sulfonic acid dispersant or a combination of at least two thereof; The adhesive is a polyurethane adhesive.

2. The down-proof textile fabric according to claim 1, characterized in that: The base fabric has a woven structure formed by interlacing single and double superfine denier yarns.

3. The down-proof textile fabric according to claim 2, characterized in that: The specification of the superfine denier yarn is 15~20D; The material of the superfine denier yarn is nylon or polyethylene; The nylon is nylon 66; The polyethylene includes ultra-high molecular weight polyethylene; The weight of the anti-down textile fabric is 30-40 g / m 2 ; The coating has a gram weight of 3 to 10 g / m 2 .

4. A method for preparing the down-proof textile fabric according to any one of claims 1 to 3, characterized in that: The preparation method comprises the following steps: coating the anti-down finishing agent on the surface of the base fabric, and pressing to obtain the anti-down textile fabric.

5. The preparation method according to claim 4, characterized in that The preparation method comprises the following steps: (1) preparing a grey cloth by interweaving single and double yarns of ultra-fine denier yarn; (2) pre-treating, dyeing and shaping the grey cloth obtained in step (1) to obtain a base cloth; (3) coating the anti-down finishing agent on the surface of the base fabric prepared in step (2), and pressing the base fabric to obtain the anti-down textile fabric.

6. The preparation method according to claim 5, characterized in that The pretreatment in step (2) includes desizing, scouring, bleaching and mercerizing.

7. The preparation method according to claim 5, characterized in that The shaping in step (2) includes shaping by heat pressing; The hot pressing temperature is 190-210°C, the hot pressing pressure is 20-30 kPa, and the hot pressing time is 30-60 seconds; After the pressing in step (3), a drying step is also included.

8. A down jacket, characterized in that: The down jacket comprises the down-proof textile fabric according to any one of claims 1 to 3.

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