Self-softening one-way moisture-conducting environment-friendly fabric and preparation method thereof

Abstract

The invention discloses a self-softening one-way moisture-conducting environment-friendly fabric and a preparation method thereof, and belongs to the technical field of fabric weaving, the front face of the fabric is made of surface yarn chinlon filaments and polyester yarns, the lining is made of polypropylene spandex core-spun yarns, and the fabric is woven through a single-side knitting machine structure and has the characteristics of self-softening and one-way moisture-conducting. Compared with the prior art, the fabric is soft and comfortable, has good moisture permeability and environmental protection property, and is suitable for the fields of outdoor sports, fitness, daily casual clothes and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric weaving, in particular to a self-softening one-way moisture-conducting environmentally-friendly fabric and a preparation method thereof. BACKGROUND

[0002] With the rapid development of modern lifestyles, consumers' demands for textiles are increasingly diverse and functional. In particular, in the fields of outdoor sports, fitness, and daily casual wear, there is a growing market demand for fabrics with specific functions, such as breathability, moisture absorption and sweat-wicking, softness, and comfort. Among many functional fabrics, one-way moisture-conducting fabrics have received widespread attention due to their ability to rapidly conduct moisture from the skin surface to the outside while preventing external moisture penetration.

[0003] However, existing one-way moisture-conducting fabrics in the prior art often have some limitations. For example, some fabrics have good moisture-conducting properties but lack softness, resulting in poor wearing comfort; others may not meet environmental performance expectations or consume large amounts of energy and water resources during production, which is not conducive to sustainable development. In addition, some fabrics on the market perform poorly in oil repellency, limiting their application in specific environments.

[0004] Chinese patent CN104032465A discloses a high-elasticity warm and raised knitted fabric and a preparation method thereof. The high-elasticity warm and raised knitted fabric comprises three layers: the first layer is a flat weft plain needle shape, the middle reinforcing layer is a wave shape, and the raised surface layer is a fluffy pile shape. The fabric is woven from polyamide filament, spandex bare filament, and polyester filament. The high-elasticity warm and raised knitted fabric provided by the present application improves the elasticity of the fabric by using the method of feeding spandex bare filament alone, which also reduces production costs. The loops on the raised surface of the fabric are lengthened, making the fabric have excellent extensibility and improving the loftiness of the prepared fabric. Using polyamide filament as the surface layer of the fabric provides better anti-pilling performance. In addition, the present application uses an active weft knitting terry machine to weave, which can better control the grammage of the fabric, making the prepared fabric more uniform. However, the knitted fabric prepared by the present application lacks drape and oil repellency, which is not conducive to wear. SUMMARY

[0005] To address the above problems, the present application aims to provide a self-softening one-way moisture-conducting environmentally-friendly fabric and a preparation method thereof. Through specific fabric structure design and yarn combination, as well as fine control of spinning process and functional agent preparation method, the softness, moisture-conducting property, and environmental performance of the fabric are comprehensively optimized to meet the needs of modern consumers for comfortable, functional, and environmentally-friendly textiles.

[0006] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0007] A preparation method of a self-softening one-way moisture-conducting environment-friendly fabric is as follows:

[0008] The front surface of the fabric adopts face yarn nylon filament, and polyester yarn is added, and the inside adopts polyamide core-spun yarn, the fabric adopts the structure of a single-jersey machine, the needle cylinder diameter is 13-20 inches, the needle gauge is 28 needles per inch, the thread feeding route number is 8, the fabric is knitted by using a seamless knitting machine, and upper and lower self-locking ports are provided, 8 routes are one cycle during knitting, two kinds of yarns are provided in each route, the first, third, fifth and seventh routes are hung with polyester yarn+polyamide core-spun yarn, the second, fourth, sixth and eighth routes are hung with nylon filament+polyamide core-spun yarn, the second and sixth routes are added with 180-240D spandex for a waistline, and the fabric is knitted into a self-softening one-way moisture-conducting environment-friendly fabric with a grammage of 280-320 g / m 2 .

[0009] The weight ratio of the nylon filament, the polyester yarn, the polyamide core-spun yarn and the 180-240D spandex for the waistline in the self-softening one-way moisture-conducting environment-friendly fabric is 2-4:2-4:3-5:0.5-2.

[0010] The polyamide core-spun yarn is 40-60D polypropylene staple fiber covering 12-28D spandex, and the weight ratio of the 40-60D polypropylene staple fiber to the 12-28D spandex is 6-8:3.

[0011] The nylon filament is 70D / 68F.

[0012] The polyester yarn is 75dtex / 100F thermolite brand.

[0013] A preparation method of the polypropylene staple fiber is as follows, and the components are calculated by weight parts:

[0014] 1-3 parts of an antioxidant, 2-4 parts of a functional agent and 1-3 parts of a red masterbatch and 90-100 parts of polypropylene are placed at a temperature of 110-130 DEG C and heated and continuously stirred for 20-40 minutes, then conveyed to a screw extruder, compacted and plasticized, melted by a screw, filtered through a 180-220-mesh filter, extruded by using an extrusion spinning process through a spinneret hole, cooled, oiled, drawn, crimped, heat set, cut, and packaged to obtain the polypropylene staple fiber, and the specification of the polypropylene staple fiber is 40-60D and the length is 30-38 mm.

[0015] The screw five-zone temperature is: zone 1: 295~305 DEG C; zone 2: 290~300 DEG C; zone 3: 285~295 DEG C; zone 4: 275~285 DEG C; zone 5: 270~280 DEG C; flange zone 270~280 DEG C, elbow zone: 265~275 DEG C, spinning box: 265~275 DEG C, ring blowing speed: 0.4~0.6 m / min, air temperature: 16~20 DEG C, spinning speed: 700~900 m / min, pre-spinning oiling: 1%~2%; oiling wet rate of the original wire: 12%~18%; total draft multiple: 3~5; drawing speed: 70~90 m / min, drawing temperature: oil bath 55~60 DEG C, superheated steam: 100~120 DEG C, crimping machine main pressure: 1.8~2.2 kg / cm 2 , back pressure: 1.2~1.8 kg / cm 2 , heat setting four-zone temperature: zone 1: 100~110 DEG C, zone 2: 110~120 DEG C, zone 3: 115~125 DEG C, zone 4: 85~95 DEG C; 85~95 DEG C cutting and packing.

[0016] The antioxidant is a mixture of tetra [beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and tris (2, 4-di-tert-butylphenyl) phosphite according to the mass ratio 1~3: 1.

[0017] The preparation method of the functional agent is as follows, in terms of weight parts:

[0018] S1, 15~25 parts of cyclic dimethyl polysiloxane, 0.5~2 parts of 3-[tris (2-ethoxyethoxy) silane] propylamine and 0.2~0.4 parts of 1, 1, 3, 3-tetraethyl-1, 3-dimethyl disiloxane are mixed and stirred, then the temperature of the mixture is raised to 80~90 DEG C, at this temperature, 0.05~0.2 parts of 18~22wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 100~110 DEG C, and the temperature is kept for 2~5 hours to obtain a pretreatment product;

[0019] S2, the pretreatment product prepared in step S1 is mixed and stirred with 1~2 parts of (2, 3-epoxypropyl) [2- (isobutenoyloxy) ethyl] dimethyl ammonium chloride and 15~25 parts of 1, 6-heptadiene-4-ol, heated to 80~90 DEG C, and treated at this temperature for 1~5 hours to obtain a post-treatment product;

[0020] S3, the post-treatment product prepared in step S2 is mixed with 2~4 parts of castor oil polyoxyethylene ether and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 with 0.1~0.3 mol / L citric acid aqueous solution, and filtered to obtain the functional agent.

[0021] The effects of each substance of the application are as follows:

[0022] The face veil nylon filament provides strength and abrasion resistance to the fabric, while nylon has good elasticity and recovery, increasing the durability and comfort of the fabric.

[0023] The polyester yarn provides stability and shape retention to the fabric due to its high strength and good abrasion resistance. The Thermolite brand of polyester yarn may have specific thermal properties.

[0024] The polyamide core-spun yarn provides lightweight and quick-drying properties with polypropylene, while the elastane provides elasticity, making the fabric have better fit and comfort.

[0025] The 180~240D elastane used in the waistband increases the elasticity of the fabric in the waistband part to provide better fit and support.

[0026] Antioxidants prevent the oxidation and degradation of polypropylene during processing and use, prolonging the service life of the fabric.

[0027] Functional agents provide special surface properties of polypropylene short fibers, such as softness, smoothness, and may also help improve the moisture-wicking properties of the fabric.

[0028] Emulsifiers help the post-treatment evenly disperse to form a stable emulsion, making it easier to apply to the fabric.

[0029] Red masterbatch is used to provide the desired color to the polypropylene short fibers.

[0030] Polypropylene is the main raw material for polypropylene short fibers, which is a lightweight and durable plastic used to make fibers.

[0031] Aqueous potassium hydroxide solution as an alkaline catalyst, promotes the hydrolysis and further chemical reaction of siloxane in the functional agent raw material.

[0032] The combination and interaction of these substances make the fabric of the invention have the characteristics of self-softening, one-way moisture-wicking and environmental protection, meeting the needs of modern consumers for high-performance textiles.

[0033] Compared with the prior art, it has the following beneficial effects:

[0034] 1) The invention successfully improves the drape and oil resistance of the fabric through specific fabric design and preparation methods. This improvement makes the fabric not only maintain soft and comfortable touch, but also better resist oil stains, improving the practicality and durability of the fabric.

[0035] 2) The invention uses environmentally friendly raw materials and processes in the preparation of the fabric, reducing the impact on the environment. By using environmentally friendly polypropylene staple fiber and functional agents, the fabric of the invention maintains high performance while also meeting the needs of modern consumers for environmentally friendly products.

[0036] 3) The fabric of the invention combines the properties of different materials, such as nylon filament, polyester yarn, and polypropylene spandex core yarn, achieving softness, breathability, and moisture absorption and sweat-wicking functions. The combination of these properties makes the fabric more comfortable to wear, while also meeting the needs of modern life for functional textiles. DETAILED DESCRIPTION

[0037] Main material sources:

[0038] Red masterbatch, brand: 1090, color: red, suitable for plastic varieties: PP, PE, sun resistance: 8 (level), material: PE, Henan Zino Chemical Product Co., Ltd.

[0039] Cyclic dimethyl polysiloxane, CAS number: 69430-24-6, viscosity 25℃ mm 2 / s, main use: softener, Hubei Langbo Wan Biological Medicine Co., Ltd.

[0040] Castor oil polyoxyethylene ether, item number: EL-10, saponification value: 110~130 mgKOH / g, Jiangsu Province Hai'an Petroleum Chemical Plant.

[0041] The remaining raw materials in the examples and comparative examples of the invention are commercially available products.

[0042] The design idea of the invention is to develop an environmentally friendly fabric with self-softening and one-way moisture-wicking properties. Through specific knitting structures and yarn combinations, as well as fine control of spinning processes and functional agent preparation methods, the softness, moisture-wicking properties, and environmental performance of the fabric are optimized to meet the needs of modern consumers for comfortable, functional, and environmentally friendly textiles.

[0043] Example 1

[0044] A method for preparing a self-softening and one-way moisture-wicking environmentally friendly fabric is as follows:

[0045] The front surface of the fabric adopts 70D / 68F nylon filament, adds 75dtex / 100F thermolite polyester yarn, the back surface adopts polyamide core-spun yarn, the fabric adopts the structure of single-jersey machine, the needle cylinder diameter is 18 inches, the needle pitch is 28 needles per inch, the threading route number is 8, it is knitted by using seamless knitting machine, with upper and lower self-locking ports, 8 routes in one cycle during knitting, two kinds of yarns in each route, the first, third, fifth and seventh routes hang 75dtex / 100F polyester yarn + polyamide core-spun yarn, the second, fourth, sixth and eighth routes hang 70D / 68F nylon filament + polyamide core-spun yarn, the second and sixth routes add 210D spandex for waistline, and are knitted into an environmentally-friendly fabric with a self-softening and one-way moisture-conducting function and a weight of 300g / m 2 .

[0046] The weight ratio of the nylon filament, 75dtex / 100F thermolite polyester yarn, polyamide core-spun yarn and 210D spandex for waistline in the environmentally-friendly fabric with a self-softening and one-way moisture-conducting function is 3:3:4:1.

[0047] The polyamide core-spun yarn is 50D polypropylene staple fiber covering 20D spandex, and the weight ratio of the 50D polypropylene staple fiber to the 20D spandex is 7:3.

[0048] The preparation method of the polypropylene staple fiber is as follows:

[0049] 2kg of antioxidant, 3kg of functional agent and 2kg of red masterbatch and 96kg of polypropylene are placed at a temperature of 120℃ for heating and continuous stirring for 30 minutes, then are transported to a screw extruder, are compacted and plasticized, are melted by a screw, are filtered through a 200-mesh filter, are extruded by an extrusion spinning process through the holes of a spinneret, are cooled, are oiled, are drawn, are crimped, are heat set, are cut, and are packaged to obtain polypropylene staple fiber, and the specification of the polypropylene staple fiber is 50D and the length is 35mm.

[0050] The screw five-zone temperature is as follows: zone one: 300℃; zone two: 295℃; zone three: 290℃; zone four: 280℃; zone five: 275℃. The flange zone is 275℃, the elbow zone is 270℃, the spinning box is 270℃, the ring blowing speed is 0.5m / min, the air temperature is 18℃, the spinning speed is 800m / min, the front spinning oiling is 1.5%, the original wire oiling wetness is 15%, the total drawing multiple is 4, the drawing speed is 80m / min, the drawing temperature is oil bath 56℃, the superheated steam is 110℃, the crimping machine main pressure is 2kg / cm 2 , the back pressure is 1.5kg / cm 2 , the heat setting four-zone temperature is as follows: zone one: 105℃, zone two: 115℃, zone three: 120℃, zone four: 90℃; 90℃ cutting and packaging.

[0051] The antioxidant is a mixture of tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester and tris(2,4-di-tert-butylphenyl)phosphite in a mass ratio of 2:1.

[0052] The preparation method of the functional agent is as follows:

[0053] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris(2-ethoxyethoxy)silyl]propylamine and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane are mixed and stirred, then the temperature of the mixture is raised to 85℃, at this temperature, 0.1 kg of 20wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105℃, and the temperature is kept for 4 hours, to obtain a pretreatment product;

[0054] S2, the pretreatment product prepared in step S1 is mixed and stirred with 1.5 kg of (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 20 kg of 1,6-heptadiene-4-ol, heated to 85℃, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0055] S3, the post-treatment product prepared in step S2 is mixed and stirred with 3 kg of castor oil polyoxyethylene ether until uniform, then the pH value of the mixture is adjusted to 5 with 0.2 mol / L citric acid aqueous solution, and filtered to obtain a functional agent.

[0056] Example 2

[0057] A preparation method of a self-softening one-way moisture-wicking environmentally friendly fabric is basically the same as that of example 1, the only difference being that the preparation method of the functional agent is different.

[0058] The preparation method of the functional agent is as follows:

[0059] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of (3-aminopropyl)trimethoxysilane and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane are mixed and stirred, then the temperature of the mixture is raised to 85℃, at this temperature, 0.1 kg of 20wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105℃, and the temperature is kept for 4 hours, to obtain a pretreatment product;

[0060] S2, the pretreatment product prepared in step S1 is mixed and stirred with 1.5 kg of (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 20 kg of 1,6-heptadiene-4-ol, heated to 85℃, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0061] S3, the post-treatment prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 using 0.2 mol / L aqueous citric acid solution, and filtration is performed to obtain the functional agent.

[0062] Example 3

[0063] A preparation method of the self-soft one-way moisture-conducting environment-friendly fabric is basically the same as that in example 1, and the only difference is that the preparation method of the functional agent is different.

[0064] The preparation method of the functional agent is as follows:

[0065] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of diethylenetriamine propyl trimethoxysilane and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyl disiloxane are mixed and stirred, then the temperature of the mixture is raised to 85°C, at this temperature, 0.1 kg of 20 wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105°C, and the temperature is maintained for 4 hours to obtain a pretreatment;

[0066] S2, the pretreatment prepared in step S1 is mixed with 1.5 kg of (2,3-epoxypropyl) [2-(isobutenoyloxy) ethyl] dimethyl ammonium chloride and 20 kg of 1,6-heptadiene-4-ol, stirred, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment;

[0067] S3, the post-treatment prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 using 0.2 mol / L aqueous citric acid solution, and filtration is performed to obtain the functional agent.

[0068] Example 4

[0069] A preparation method of the self-soft one-way moisture-conducting environment-friendly fabric is basically the same as that in example 1, and the only difference is that the preparation method of the functional agent is different.

[0070] The preparation method of the functional agent is as follows:

[0071] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of diethylenetriamine propyl trimethoxysilane and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyl disiloxane are mixed and stirred, then the temperature of the mixture is raised to 85°C, at this temperature, 0.1 kg of 20 wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105°C, and the temperature is maintained for 4 hours to obtain a pretreatment;

[0072] S2, the pretreatment prepared in step S1 is mixed with 1.5 kg (2, 3-epoxypropyl) ethyl bis (2-hydroxyethyl) ammonium chloride and 20 kg 1, 6-heptadiene-4-ol, stirred, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment;

[0073] S3, the post-treatment prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 using 0.2 mol / L aqueous citric acid solution, and filtered to obtain a functional agent.

[0074] Example 5

[0075] A method for preparing a self-softening one-way moisture-wicking environmentally friendly fabric is basically the same as that of Example 1, the only difference being that the method for preparing the functional agent is different.

[0076] The method for preparing the functional agent is as follows:

[0077] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris (2-ethoxyethoxy) silane] propylamine and 0.3 kg of 1, 1, 3, 3-tetraethyl-1, 3-dimethyl disiloxane are mixed and stirred, then the temperature of the mixture is raised to 85°C, 0.1 kg of 20 wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105°C, and the temperature is maintained for 4 hours to obtain a pretreatment;

[0078] S2, the pretreatment prepared in step S1 is mixed with 1.5 kg (2, 3-epoxypropyl) ethyl bis (2-hydroxyethyl) ammonium chloride and 20 kg 1, 6-heptadiene-4-ol, stirred, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment;

[0079] S3, the post-treatment prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 using 0.2 mol / L aqueous citric acid solution, and filtered to obtain a functional agent.

[0080] Example 6

[0081] A method for preparing a self-softening one-way moisture-wicking environmentally friendly fabric is basically the same as that of Example 1, the only difference being that the method for preparing the functional agent is different.

[0082] The method for preparing the functional agent is as follows:

[0083] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris(2-ethoxyethoxy)silyl]propyl amine and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyl disiloxane were mixed and stirred, then the temperature of the mixture was raised to 85°C, at this temperature, 0.1 kg of 20 wt% potassium hydroxide aqueous solution was added, and the temperature was further raised to 105°C, and the temperature was kept for 4 hours to obtain a pretreatment product;

[0084] S2, the pretreatment product prepared in step S1 was mixed and stirred with 1.5 kg of (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 20 kg of 4-penten-2-ol, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0085] S3, the post-treatment product prepared in step S2 was mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture was adjusted to 5 using 0.2 mol / L citric acid aqueous solution, and filtered to obtain a functional agent.

[0086] Comparative Example 1

[0087] A method for preparing a self-softening one-way moisture-conducting environmentally friendly fabric is basically the same as that of Example 1, the only difference being that the method for preparing the functional agent is different.

[0088] The method for preparing the functional agent is as follows:

[0089] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris(2-ethoxyethoxy)silyl]propyl amine and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyl disiloxane were mixed and stirred, then the temperature of the mixture was raised to 85°C, at this temperature, 0.1 kg of 20 wt% potassium hydroxide aqueous solution was added, and the temperature was further raised to 105°C, and the temperature was kept for 4 hours to obtain a pretreatment product;

[0090] S2, the pretreatment product prepared in step S1 was mixed and stirred with 1.5 kg of (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 20 kg of 4-penten-2-ol, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0091] S3, the post-treatment product prepared in step S2 was mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture was adjusted to 5 using 0.2 mol / L citric acid aqueous solution, and filtered to obtain a functional agent.

[0092] Comparative Example 2

[0093] A preparation method of a self-softening one-way moisture-conducting environment-friendly fabric is basically the same as that in Embodiment 1, with the only difference being that the preparation method of the functional agent is different.

[0094] The preparation method of the functional agent is as follows:

[0095] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris(2-ethoxyethoxy)silyl]propylamine and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane are mixed and stirred, then the temperature of the mixture is raised to 85°C, at this temperature, 0.1 kg of 20wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105°C, and the temperature is kept for 4 hours to obtain a pretreatment product;

[0096] S2, the pretreatment product prepared in step S1 is mixed and stirred with 1.5 kg of N,N-bis(2,3-epoxypropyl)isopropylamine and 20 kg of 1,6-heptadiene-4-ol, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0097] S3, the post-treatment product prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 with 0.2 mol / L citric acid aqueous solution, and filtered to obtain a functional agent.

[0098] Comparative Example 3

[0099] A preparation method of a self-softening one-way moisture-conducting environment-friendly fabric is basically the same as that in Embodiment 1, with the only difference being that the preparation method of the functional agent is different.

[0100] The preparation method of the functional agent is as follows:

[0101] S1, 20 kg of cyclic dimethyl polysiloxane, 1 kg of 3-[tris(2-ethoxyethoxy)silyl]propylamine and 0.3 kg of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane are mixed and stirred, then the temperature of the mixture is raised to 85°C, at this temperature, 0.1 kg of 20wt% potassium hydroxide aqueous solution is added, and the temperature is further raised to 105°C, and the temperature is kept for 4 hours to obtain a pretreatment product;

[0102] S2, the pretreatment product prepared in step S1 is mixed and stirred with 1.5 kg of (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 20 kg of isopropyl alcohol, heated to 85°C, and treated at this temperature for 3 hours to obtain a post-treatment product;

[0103] S3, the post-treatment prepared in step S2 is mixed with 3 kg of emulsifier and stirred thoroughly until uniform, then the pH value of the mixture is adjusted to 5 using 0.2 mol / L citric acid aqueous solution, and filtration is performed to obtain the functional agent.

[0104] Comparative Example 4

[0105] A preparation method of a self-softening one-way moisture-wicking eco-friendly fabric is basically the same as that of Example 1, with the only difference being that the preparation method of the polypropylene staple fiber is different.

[0106] The polypropylene staple fiber is commercially available, with a specification of 50D and a brand of DRYARN.

[0107] Test Example 1

[0108] Drapability test

[0109] Softness of a fabric is an important indicator for evaluating its tactile sensation, which involves people's intuitive experience when touching and holding the fabric. Softness can be divided into two dimensions: rigidity and softness. Rigidity refers to the difficulty of bending the fabric, and the fabric that is easy to bend is considered soft, while the fabric that is difficult to bend is considered hard. Softness refers to the difficulty of deformation of the fabric when compressed, and the fabric that is easy to compress is considered soft, while the fabric that is not easy to compress is considered hard. Therefore, the softness of the fabric can be directly reflected by the deformation difficulty, and indirectly measured by the drapability test of the fabric.

[0110] According to the national standard GB / T 23329-2009 "Textiles Determination of drapability of fabrics", the fabric to be tested is cut into a circular sample with a diameter of 24 cm, and a XDP-1 type fabric drapability tester is used to evaluate the drapability characteristics of the sample. The test results are shown in Table 1, in which the sample with lower static drapability coefficient shows better drapability, which also means higher softness. The specific test data is shown in Table 1.

[0111] Table 1

[0112]

[0113] Test Example 2

[0114] Oil repellency test: according to the standard AATCC 118-2013 "Oil repellency: resistance to hydrocarbons test", the oil repellency grade of the self-softening one-way moisture-wicking eco-friendly fabric of the examples and comparative examples is evaluated, and the evaluation standard is shown in Table 2, and the test results are shown in Table 3.

[0115] Table 2

[0116]

[0117] Table 3

[0118]

[0119] From the data of test examples 1-2, it can be seen that the drape and oil repellency of the self-softening unidirectional moisture-wicking environmentally friendly fabric prepared in Example 1 are the best.

[0120] In the functional agent preparation method of Example 1, first in step S1, the cyclic dimethyl polysiloxane, 3-[tris(2-ethoxyethoxy)silyl]propylamine and 1,1,3,3-tetraethyl-1,3-dimethyl disiloxane are mixed and heated to 85°C, and after adding the aqueous potassium hydroxide solution, further heated to 105°C, this process promotes the hydrolysis of siloxane and the reaction between amines, forming a pretreatment. Then in step S2, the pretreatment is mixed with (2,3-epoxypropyl)[2-(isobutenoyloxy)ethyl]dimethyl ammonium chloride and 1,6-heptadiene-4-ol, continue to heat to 85°C and keep for 3 hours, which helps the reaction of epoxy and hydroxyl groups, forming a stable post-treatment. Finally, in step S3, the post-treatment is mixed with emulsifier and the pH value is adjusted to 5, the addition of emulsifier enables the post-treatment to be uniformly dispersed in water, forming a stable emulsion, and finally the functional agent is obtained by filtration. The whole process involves pretreatment of siloxane, ring-opening reaction of epoxy group and emulsification process, and finally a functional agent with specific function is prepared.

[0121] 3-[tris(2-ethoxyethoxy)silyl]propylamine as a silane coupling agent, due to its unique structure, has a longer siloxane branch, and also contains an ether bond. This structure is conducive to the reconstruction of the functional agent, not only enhances the lubricity between fibers, thereby improving the drape of the fabric, but also provides better surface energy control, enhancing the oil repellency of the fabric. In contrast, (3-aminopropyl)trimethoxysilane and diethylenetriamine propyl trimethoxysilane, although also have coupling effect, but they may not be as good as 3-[tris(2-ethoxyethoxy)silyl]propylamine in the uniformity and stability of the siloxane film, resulting in slightly inferior performance in drape and oil repellency. Therefore, the use of 3-[tris(2-ethoxyethoxy)silyl]propylamine is more effective in improving the drape and oil repellency of the fabric.

[0122] In the embodiment 1 of the present application, the 1,1,3,3-tetraethyl-1,3- dimethyldisiloxane used provides more steric hindrance and flexibility due to the presence of four ethyl groups in its molecular structure, which can help the functional agent to form a more uniform and dense siloxane network structure on the surface of the fabric. This structure not only enhances the lubricity between fibers, thereby improving the drape of the fabric, but also can form a more effective barrier on the surface of the fabric, preventing the penetration of oil molecules, thus performing better in oil repellency. In addition, this structural property of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane can also help to increase the surface energy of the fabric, further enhancing the oil repellency of the fabric.

[0123] The (2,3-epoxypropyl)[2-(isobutenyloxy)ethyl]dimethylammonium chloride used in embodiment 1, due to its unique molecular structure, contains an isobutenyloxy group, which can enhance the reactivity with the fibers in the fabric, increase the crosslinking density, and help to improve the drape of the fabric, making the fabric softer and less prone to deformation.

[0124] The 1,6-heptadiene-4-ol used in embodiment 1 has a longer carbon chain and more double bonds in its molecular structure compared to 4-penten-2-ol in embodiment 6 and isopropyl alcohol in comparative example 3, which can make the reaction of 1,6-heptadiene-4-ol with other components in the functional agent more complete, forming a more uniform and stable emulsion. This uniformity can help to form a more delicate and continuous coating on the surface of the fibers, thereby improving the drape of the fabric.

Claims

1. A method for preparing a self-softening, one-way, moisture-conducting, environmentally friendly fabric, characterized in that: Here’s how: The front of the fabric is made of nylon filament yarn with polyester yarn, and the inside is made of polypropylene spandex core-spun yarn. The fabric adopts a knitting single-sided machine structure, the needle diameter is 13~20 inches, the needle pitch is 28 needles per inch, the number of feed lines is 8, and it is woven on a seamless knitting machine with upper and lower self-locking mouths. When knitting, 8 lines are one cycle, and there are two kinds of yarns in each line. The 1st, 3rd, 5th and 7th lines are hung with polyester yarn + polypropylene spandex core-spun yarn, and the 2nd, 4th, 6th and 8th lines are hung with nylon filament + polypropylene spandex core-spun yarn. The 2nd and 6th lines are added with 180~240D spandex for waist circumference, and the woven weight is 280~320g / m 2 Self-soft one-way moisture-wicking environmentally friendly fabric.

2. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 1, wherein: The weight ratio of nylon filament, polyester yarn, polypropylene spandex core-spun yarn and 180-240D spandex for waist circumference in the self-soft unidirectional moisture-conducting environmentally friendly fabric is 2-4:2-4:3-5:0.5-2.

3. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 1 or 2, characterized in that: The polypropylene spandex core-spun yarn is 40-60D polypropylene staple fibers coated with 12-28D spandex, and the weight ratio of the 40-60D polypropylene staple fibers to the 12-28D spandex is 6-8:

3.

4. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 1 or 2, characterized in that: The nylon filament is 70D / 68F.

5. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 1 or 2, characterized in that: The polyester yarn is 75dtex / 100F thermolite brand.

6. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 3, wherein: The preparation method of the polypropylene staple fiber is as follows, in parts by weight: 1-3 parts of antioxidant, 2-4 parts of functional agent, 1-3 parts of red masterbatch and 90-100 parts of polypropylene are placed at a temperature of 110-130°C and continuously stirred for 20-40 minutes, and then transported to a screw extruder. After compaction and plasticization, screw melting, filtering through a 180-220 mesh filter, the mixture is extruded through a spinneret hole using an extrusion spinning process, cooled, oiled, drawn, curled, heat-set, cut and packaged to obtain polypropylene staple fibers. The specifications of the polypropylene staple fibers are 40-60D and the length is 30-38 mm.

7. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 6, wherein: The temperatures of the five screw zones are: Zone 1: 295-305°C; Zone 2: 290-300°C; Zone 3: 285-295°C; Zone 4: 275~285℃; Zone 5: 270~280℃; Flange area: 270~280℃, elbow area: 265~275℃, spinning box: 265~275℃, ring air speed: 0.4~0.6m / min, air temperature: 16~20℃, spinning speed: 700~900m / min, pre-spinning oiling: 1%~2%; raw yarn oiling moisture content: 12%~18%; Total draft ratio: 3~5; drawing speed: 70~90m / min, drawing temperature: oil bath 55~60℃, superheated steam: 100~120℃, crimping machine main pressure: 1.8~2.2kg / cm 2 , back pressure: 1.2~1.8kg / cm 2 , the temperature of the four heat setting zones: Zone 1: 100~110℃, Zone 2: 110~120℃, Zone 3: 115~125℃, Zone 4: 85~95℃; cutting and packaging at 85~95℃.

8. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 6, wherein: The antioxidant is prepared by mixing pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] and tris(2,4-di-tert-butylphenyl) phosphite in a mass ratio of 1-3:

1.

9. The method for preparing the self-softening, one-way moisture-conducting, environmentally friendly fabric according to claim 6, wherein: The preparation method of the functional agent is as follows, in parts by weight: S1. 15-25 parts of cyclic dimethylpolysiloxane, 0.5-2 parts of 3-[tris(2-ethoxyethoxy)silyl]propylamine, and 0.2-0.4 parts of 1,1,3,3-tetraethyl-1,3-dimethyldisiloxane are mixed and stirred, and then the temperature of the mixture is raised to 80-90° C. At this temperature, 0.05-0.2 parts of an 18-22 wt % potassium hydroxide aqueous solution are added, and the temperature is further raised to 100-110° C., and this temperature is maintained for 2-5 hours to obtain a pretreated material; S2. Mixing the pretreated product prepared in step S1 with 1-2 parts of (2,3-epoxypropyl)[2-(isomethacryloyloxy)ethyl]dimethylammonium chloride and 15-25 parts of 1,6-heptadien-4-ol, heating the mixture to 80-90° C. and treating the mixture at this temperature for 1-5 hours to obtain a post-treated product; S3. The post-treated product prepared in step S2 is mixed with 2 to 4 parts of castor oil polyoxyethylene ether and stirred until uniform. Subsequently, the pH value of the mixture is adjusted to 5 with a 0.1 to 0.3 mol / L citric acid aqueous solution, and the mixture is filtered to obtain a functional agent.

10. A self-softening, one-way moisture-conducting, environmentally friendly fabric, characterized in that: The method is as described in any one of claims 1 to 9.

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