Cooling negative ion fabric and its preparation method

Abstract

This invention discloses a cooling negative ion fabric and its preparation method. The preparation method includes: blending and interweaving negative ion fibers with cellulose fibers to obtain an inner layer fabric; blending and interweaving cooling fibers with cellulose fibers to obtain an outer layer fabric; interweaving and blending the inner and outer layer fabrics to obtain a fabric to be treated; sequentially subjecting the inner layer of the fabric to be treated to plasma treatment and cooling microcapsule treatment; and sequentially subjecting the outer layer of the fabric to be treated to plasma treatment and negative ion treatment to obtain the cooling negative ion fabric. The cooling negative ion fabric prepared using the method of this application can effectively improve the cooling performance and anti-fatigue effect of the fabric, while also giving the fabric a good hand feel and breathability. The treated fabric exhibits good washability.

Description

Technical Field

[0001] This invention relates to the fields of textiles, textile chemistry and dyeing and finishing engineering, and more specifically, to a cooling negative ion fabric and its preparation method. Background Technology

[0002] In recent years, increased environmental awareness and the pursuit of a healthy lifestyle have led to higher and higher demands for clothing fabrics. People not only require fabrics to provide adequate coverage and warmth, but also new requirements for comfort, deodorization, absorption of harmful gases, antibacterial properties, fatigue reduction, comfort, breathability, moisture wicking, and antibacterial properties. At the same time, they also want fabrics to have certain health benefits.

[0003] Negative ions help purify the air, boost immunity, improve sleep, relieve stress, enhance mental state, and provide antioxidant benefits. Negative ion textiles are made by adding natural mineral additives (such as tourmaline) during the fiber or dyeing and finishing process. These additives have a polar crystalline structure and generate negative ions upon thermal motion. Studies show that negative ion concentrations exceed 1000 ions / cm³. 3 It is beneficial to human health and can improve immunity.

[0004] Meanwhile, for spring and summer, consumers consider durability, ease of care, and suitability for daily activities when choosing fabrics. Selecting the right fabric is crucial. Cotton, polyester, and cotton-polyester blends are commonly used in spring and summer clothing. Cotton-polyester blends the durability of polyester with the comfort of cotton, offering crispness, quick-drying, abrasion resistance, elasticity, and easy care, making it widely applicable. However, due to the high summer temperatures, the coolness of the fabric becomes an important factor for some consumers when deciding whether to purchase.

[0005] Cooling sensation primarily refers to the "instantaneous cooling sensation upon contact," that is, the cool feeling experienced by the skin when it comes into contact with a fabric at a lower temperature, due to the rapid transfer of heat. Cooling fibers can be prepared using natural fibers with inherent cooling properties, as well as regenerated cellulose fibers. Alternatively, cooling textiles can be made from fibers with added mica powder and gemstone powder. Another method of achieving cooling sensation is through the design of the fiber cross-section. Irregularly shaped fiber cross-sections create a longitudinal multi-groove structure, which enhances wicking capacity. Available cooling fibers include cooling polyethylene fiber, gemstone fiber, nylon, modal fiber, Coolmax fiber (DuPont), SORONA fiber (DuPont), Supercool fiber (Shanghai Guida Technology Co., Ltd.), and CoolDry fiber (Quanzhou Haitian Textile Group), among others.

[0006] In conclusion, a fabric that combines health benefits such as boosting immunity and improving sleep with a cooling sensation may be favored by consumers. Summary of the Invention

[0007] The purpose of this invention is to provide a cooling negative ion fabric and its preparation method, overcoming the problem that existing fabrics capable of generating negative ions cannot also provide a cooling sensation.

[0008] This invention is implemented as follows:

[0009] In a first aspect, the present invention provides a method for preparing a cooling negative ion fabric, comprising:

[0010] The inner layer fabric is obtained by blending and interweaving negative ion fibers and cellulose fibers, and the outer layer fabric is obtained by blending and interweaving cooling fibers and cellulose fibers. The inner and outer layers fabrics are then interwoven and blended to obtain the fabric to be finished.

[0011] The inner layer of the fabric to be treated is sequentially subjected to plasma treatment and cooling microcapsule treatment; the outer layer of the fabric to be treated is sequentially subjected to plasma treatment and negative ion treatment to obtain the cooling negative ion fabric.

[0012] In an optional implementation, at least one of the following features is satisfied:

[0013] a. The mass fraction of negative ion fibers in the inner layer fabric is 70%-90%;

[0014] b. The mass fraction of cooling fibers in the outer fabric is 70%-90%;

[0015] c. The mass fraction of the inner layer fabric in the fabric to be treated is 40%-60%;

[0016] d. Cellulose fibers are selected from at least one of cotton fibers, modal, lyocell and viscose fibers;

[0017] e. The cooling fiber is selected from at least one of nylon, polyethylene nylon fiber and jade fiber;

[0018] f. The negative ion fiber is selected from at least one of bamboo charcoal fiber, alloy germanium fiber and rice husk carbon fiber;

[0019] g. The fabric structure to be finished is selected from one of the following: double-sided fabric structure, pique fabric structure, and rib fabric structure.

[0020] In an optional embodiment, the plasma treatment step includes: using a plasma cleaner to perform plasma treatment on the inner and outer layers of the fabric to be treated, with a maximum radio frequency power of 17-19W and a treatment time of 6-10 minutes.

[0021] And / or, the cooling microcapsule finishing process includes: first, finishing the inner layer of the fabric to be finished with a first crosslinking agent, and then finishing the inner layer of the fabric to be finished with compound microcapsules.

[0022] In an optional embodiment, the first crosslinking agent is selected from at least one of organosilicon crosslinking agents, polycarboxylic acid crosslinking agents, and polyacrylate crosslinking agents;

[0023] And / or, finishing the inner layer of the fabric to be finished after plasma treatment with a first crosslinking agent includes: spraying a 5-10 g / L solution of the first crosslinking agent onto the inner layer of the fabric to be finished, and then drying it at 110-130℃ for 5-7 min, wherein the spraying amount is 70 g / m². 3 -120g / m 3 .

[0024] In an optional embodiment, the treatment of the inner layer of the fabric to be treated using compound microcapsules includes: firstly, performing a single-sided hydrophobic treatment using a screen printing process, with a hydrophobic treatment area of ​​30-50%; then, applying a paste containing the compound microcapsule solution to the inner surface of the fabric to be treated by scraping; pre-drying the fabric at 100-120℃ for 1-3 minutes; then baking it at 130-160℃ for 1-3 minutes; and finally, washing, drying, and ironing to complete the inner layer treatment.

[0025] In an optional embodiment, the slurry includes a cooling finishing agent COOL and a cooling finishing agent T802.

[0026] In an optional embodiment, the slurry comprises: a cooling finishing agent COOL 8-20 g / L and a cooling finishing agent T802 8-20 g / L, a hydrophobic finishing agent 20-30 wt%, a second crosslinking agent 0.1-1 g / L, an aqueous thickener 0.04-0.15%, and the balance being water.

[0027] In an optional embodiment, the water-based thickener is selected from water-based polyurethane thickeners and natural organic polymer thickeners;

[0028] And / or, the hydrophobic finishing agent is selected from organosilicon hydrophobic agents;

[0029] And / or, the second crosslinking agent is selected from at least one of etherified hydroxymethyl melamine, ethylene oxide, citric acid, and polycarboxylic acids.

[0030] In an optional embodiment, the negative ion finishing includes: covering the outer layer of the fabric to be finished with a negative ion foam composite material, then pre-drying it at a temperature of 60-80℃ for 2-4 minutes, and then baking it at a temperature of 120-140℃ for 1-3 minutes to complete the outer layer finishing.

[0031] And / or, the negative ion foam composite material includes 28-56 g / L of tourmaline-based negative ion finishing liquid, 12-24 g / L of nano-inorganic metal compound-based negative ion finishing liquid, 2-4 g / L of foaming agent, and 1-2 g / L of foam stabilizer.

[0032] And / or, after mixing the raw materials of the negative ion foam composite material, stir at a shear rate of 500-2000 r / min for 3-5 min to obtain the negative ion foam composite material.

[0033] Secondly, the present invention provides a cooling negative ion fabric, which is prepared by the method for preparing cooling negative ion fabric described in any one of the foregoing embodiments.

[0034] The present invention has the following beneficial effects:

[0035] The cooling negative ion fabric prepared using the method described in this application can effectively improve the cooling performance and anti-fatigue effect of the fabric, while also giving the fabric a good hand feel and breathability. The finished fabric exhibits good washability. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0037] This application provides a method for preparing a cooling negative ion fabric, comprising:

[0038] The inner layer fabric is obtained by blending and interweaving negative ion fibers and cellulose fibers, and the outer layer fabric is obtained by blending and interweaving cooling fibers and cellulose fibers. The inner and outer layers fabrics are then interwoven and blended to obtain the fabric to be finished.

[0039] The inner layer of the fabric to be treated is sequentially subjected to plasma treatment and cooling microcapsule treatment; the outer layer of the fabric to be treated is sequentially subjected to plasma treatment and negative ion treatment to obtain the cooling negative ion fabric.

[0040] The preparation method of the cooling negative ion fabric of this invention adopts a structural design with differences in the inner and outer fiber components, giving the fabric a cooling sensation and anti-fatigue properties. Furthermore, the presence of cellulose fibers improves the fabric's hand feel. The inner layer uses a blend of cooling fibers and cellulose fibers, resulting in a relatively smooth inner layer structure. Since the cooling function is related to the smoothness of the fabric, the smoother the fabric, the better the cooling performance. This allows the fabric close to the skin to have a cooling function while also providing a comfortable, skin-friendly feel, reducing discomfort caused by rapid heat conduction. The outer layer uses a blend of negative ion fibers and cellulose fibers, which helps increase the release of negative ions and thus alleviate fatigue.

[0041] Plasma treatment can increase the active sites on the fabric surface, allowing the finishing agents used to better bind to them, thereby improving height, coolness, and fatigue resistance.

[0042] The cooling negative ion fabric prepared using the method described in this application can effectively improve the cooling performance and anti-fatigue effect of the fabric, while also giving the fabric a good hand feel and breathability. The finished fabric exhibits good washability.

[0043] In an optional embodiment, the method for preparing the cooling negative ion fabric satisfies at least one of the following characteristics:

[0044] a. The mass fraction of negative ion fibers in the inner layer fabric is 70%-90%;

[0045] b. The mass fraction of cooling fibers in the outer fabric is 70%-90%;

[0046] c. The mass fraction of the inner layer fabric in the fabric to be treated is 40%-60%;

[0047] d. Cellulose fibers are selected from at least one of cotton fibers, modal, lyocell and viscose fibers;

[0048] e. The cooling fiber is selected from at least one of nylon, polyethylene nylon fiber and jade fiber;

[0049] f. The negative ion fiber is selected from at least one of bamboo charcoal fiber, alloy germanium fiber and rice husk carbon fiber;

[0050] g. The fabric structure to be finished is selected from one of the following: double-sided fabric structure, pique fabric structure, and rib fabric structure. For knitted fabrics, a double-sided structure is selected. Among them, pique and rib fabric structures have good breathability, quick moisture absorption and perspiration, excellent comfort, and beautiful visual effect, and are widely used in clothing such as T-shirts and polo shirts.

[0051] In an optional embodiment, the plasma treatment step includes: using a plasma cleaner to perform plasma treatment on the inner and outer layers of the fabric to be treated, with a maximum radio frequency power of 17-19W and a treatment time of 6-10 minutes.

[0052] In some implementations, a Harrick basic plasma cleaner PDC-32G-2 is used to treat the blended fabric at a maximum radio frequency power of 18W for 6-10 minutes, causing free radicals to adhere to the fabric. This can effectively improve the adhesion between the functional finishing agent and the fabric during subsequent functional finishing.

[0053] Plasma treatment can alter the morphology of fiber surfaces, introduce free radicals, and promote the cross-linking reaction between materials and finishing agents, thereby improving the performance of fabrics.

[0054] In some embodiments, the cooling microcapsule finishing includes: first finishing the inner layer of the fabric to be finished with a first crosslinking agent, and then finishing the inner layer of the fabric to be finished with compound microcapsules.

[0055] In an optional embodiment, the first crosslinking agent is selected from at least one of organosilicon crosslinking agents, polycarboxylic acid crosslinking agents, and polyacrylate crosslinking agents;

[0056] In an optional embodiment, treating the inner layer of the fabric to be treated with the first crosslinking agent includes: spraying a 5-10 g / L solution of the first crosslinking agent onto the inner layer of the fabric to be treated, and then drying it at 110-130°C for 5-7 minutes, wherein the spraying amount is 70 g / m². 3 -120g / m 3 .

[0057] In an optional embodiment, the treatment of the inner layer of the fabric to be treated using compound microcapsules includes: firstly, performing a single-sided hydrophobic treatment using a screen printing process, with a hydrophobic treatment area of ​​30-50%; then, applying a paste containing the compound microcapsules to the inner surface of the fabric to be treated by scraping; pre-drying the fabric at 100-120℃ for 1-3 minutes; then baking it at 130-160℃ for 1-3 minutes; and finally, washing, drying, and ironing to complete the inner layer treatment.

[0058] The fabric is treated with a cross-linking agent by spraying, followed by a cooling compound microcapsule treatment. This treatment method can enhance the strength and stability of the microcapsule wall, control the release of the core material, improve durability and thermal stability, improve compatibility with the substrate, make the microcapsules bond more firmly to the fabric surface, and produce better effects in a limited area, improve cooling performance, and at the same time, the fabric has a good hand feel.

[0059] By employing screen printing technology and utilizing a screen with a preset shape and mesh coverage, a single-sided hydrophobic finishing process can be achieved, leaving some perspiration channels. This method not only creates a differential capillary effect on both sides of the fabric but also provides channels for timely sweat evaporation. The reduced finishing area means increased difficulty in achieving permeability, resulting in a lower amount of thickener required and a fabric feel closer to unfinished fabric. In some embodiments, the hydrophobic finishing area is adjusted by changing the size of the mesh openings in the screen.

[0060] Furthermore, phase change microcapsules are a type of cooling functional finishing agent derived from the cold storage technology of phase change material microcapsules. When the external temperature changes, phase change materials undergo a solid-liquid transformation. When the components of the phase change material undergo an endothermic reaction, they change from a solid to a liquid state, accompanied by heat absorption, thus achieving the effect of absorbing heat and creating a cooling sensation upon contact. Using compound microcapsule finishing allows fabrics to slowly release cooling factors while maintaining a cooling sensation upon contact, and further enhances the cooling performance by combining the special properties of phase change materials.

[0061] In an optional embodiment, the slurry includes a cooling finishing agent COOL and a cooling finishing agent T802.

[0062] In an optional embodiment, the slurry comprises: a cooling finishing agent COOL 8-20 g / L and a cooling finishing agent T802 8-20 g / L, a hydrophobic finishing agent 20-30 wt%, a second crosslinking agent 0.1-1 g / L, an aqueous thickener 0.04-0.15%, and the balance being water.

[0063] In optional embodiments, the water-based thickener is selected from water-based polyurethane thickeners and natural organic polymer thickeners, such as sodium alginate, cellulose, etc.

[0064] And / or, the hydrophobic finishing agent is selected from organosilicon hydrophobic agents, such as polydimethylsiloxane, polysiloxane-modified waterborne polyurethane, organosilicon-modified polyacrylate, etc.

[0065] And / or, the second crosslinking agent is selected from at least one of etherified hydroxymethyl melamine, ethylene oxide, citric acid, and polycarboxylic acids.

[0066] In an optional embodiment, the negative ion finishing process includes: covering the outer layer of the fabric to be finished with a negative ion foam composite material, followed by pre-drying at 60-80°C for 2-4 minutes, and then baking at 120-140°C for 1-3 minutes to complete the outer layer finishing. In some embodiments, the compounded negative ion finishing liquid foam is transferred to the outer layer of the composite fabric using a thin film applicator.

[0067] In an optional embodiment, the negative ion foam composite material comprises 28-56 g / L of tourmaline-based negative ion finishing liquid, 12-24 g / L of nano-inorganic metal compound-based negative ion finishing liquid, 2-4 g / L of foaming agent, and 1-2 g / L of foam stabilizer.

[0068] Tourmaline is attached to the outer layer of fibers. Under certain external stimuli, such as sunlight, wind, or friction, the potential difference between the tourmaline crystals generates enough energy to ionize the surrounding air. Upon contact with water and oxygen molecules, this ionization effect produces negative ions. Inorganic metal oxide negative ion finishing agents are then applied to the fabric. These nano-sized inorganic metal compound negative ion finishing agents release hydroxyl negative ions, which are present in pristine environments such as virgin forests and waterfalls, during the textile application process. The compounded negative ion finishing solution gives the fabric both negative ion release and UV protection capabilities. Negative ion fibers are blended with cellulose fibers as the outer layer fibers. Tourmaline is attached to the outer layer fibers to form an uneven structure, which can increase the absorption of light and the release of negative ions, helping to relieve fatigue and have antibacterial and anti-ultraviolet properties. In negative ion foam composite materials, the foaming agents are anionic foaming agents (alkyl sulfates, alkyl sulfonates, alkyl carboxylates, etc.), cationic foaming agents (salts derived from organic amines), nonionic foaming agents (alkylphenol polyoxyethylene ethers, alkyl alcohol polyoxyethylene ethers, etc.), and amphoteric foaming agents (amino acid type, betaine type, imidazole type, etc.); the foam stabilizers are mainly thickening foam stabilizers (carboxymethyl cellulose, polyvinyl alcohol, etc.), ammonium stearate, and hydroxyethyl cellulose (HEC), etc.

[0069] In an optional embodiment, the raw materials of the negative ion foam composite material are mixed and stirred at a shear rate of 500-2000 r / min for 3-5 min to obtain the negative ion foam composite material.

[0070] Foam negative ion finishing can reduce fabric damage, is suitable for a variety of fibers, and is environmentally friendly.

[0071] This application also provides a cooling negative ion fabric, which is prepared by the method for preparing cooling negative ion fabric described in any of the foregoing embodiments.

[0072] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0073] Example 1

[0074] A double-sided knitted fabric with a cooling, negative ion feel was prepared for spring and summer using a 1:1 blend of high-density polyethylene fiber / nylon 6 core-sheath composite fiber and modal (75:25) as the inner layer fiber, and bamboo charcoal fiber and modal (75:25) as the outer layer fiber. The inner and outer layer blended fibers were spun in a 1:1 ratio. The fabric weighed 180 grams. A Harrick PDC-32G-2 basic plasma cleaner was used to treat the blended fabric for 9 minutes at a maximum radio frequency power of 18W.

[0075] The above-mentioned blended fabric is given a cooling finish. A spray coating process is used, employing a 5g / L citric acid crosslinking agent solution for quantitative spraying (coating amount 80g / m²). 3 Then, dry at 140℃ for 6 minutes. A single-sided hydrophobic finish is achieved using screen printing, covering 40% of the surface. A paste is prepared by mixing 40% compound microcapsule cooling agent, 20% polydimethylsiloxane hydrophobic finishing agent, 10% citric acid crosslinking agent (concentration 1g / L), 10% sodium alginate solution (concentration 0.8%), and 20% deionized water. The compound microcapsules are made by mixing 50g / L cooling finishing agent COOL (xylitol and peppermint oil nanocapsules) and 50g / L cooling finishing agent T802 (auto-temperature-regulating microcapsules with higher alkanes as the main component) in a 1:1 ratio. The printing pattern is a geometric design. After uniformly scraping the paste, the fabric is pre-dried at 110℃ for 3 minutes, then baked at 140℃ for 3 minutes. The finished product is obtained after soaping, drying, and ironing.

[0076] The above-mentioned blended fabric was treated with negative ions. A single-sided foam finishing method was used. Initially, a foaming agent and a foam stabilizer were added to the compound negative ion finishing solution. The foaming agent was sodium dodecyl sulfate (SDS) 2 g / L, and the foam stabilizer was hydroxyethyl cellulose (HEC) 1 g / L. The pre-set stirrer was set to a shear rate of 2000 r / min at room temperature, and the finishing solution was stirred and foamed for 3 minutes to form a negative ion foam composite material. The compound negative ion finishing solution was prepared by mixing 45 g / L of negative ion finishing agent SL-797 (a mixture of tourmaline powder and polyacrylamide) and 45 g / L of negative ion finishing agent JYK AI-350 (a mixture of nano-inorganic metal compounds) in a 7:3 ratio. Subsequently, the compound negative ion finishing solution foam was transferred to the outer layer of the composite fabric using a thin-film applicator. After pre-drying at 80°C for 4 minutes, it was baked at 120°C for 3 minutes.

[0077] The prepared cool-feeling negative ion knitted fabric for spring and summer achieved an air permeability of 382 mm / s and a moisture permeability of 10182 g / (m²). 2 • 24h), water absorption rate reaches 122%, drip diffusion time reaches 3s, wicking height reaches 98mm, drying rate reaches 0.3 (g / h), ultraviolet transmittance (UVA and UVB both less than 5%) and UPF value reach over 40, antibacterial rate reaches 80%, and negative ion generation reaches 2528 ions / cm³. 3 Cooling sensation upon contact before washing It can reach 0.22 J / (cm) 2 ·s), after washing 5 times, it feels cool upon contact. It can reach 0.21 J / (cm) 2 ·s).

[0078] Comparative Example 1

[0079] A method for preparing a cooling negative ion fabric for spring and summer is basically the same as that in Example 1, except that the compound negative ion finishing liquid is prepared by mixing 45g / L of negative ion finishing agent SL-797 finishing liquid (the main components of which are a mixture of tourmaline powder and polyacrylamide) and 45g / L of negative ion finishing agent JYK AIT-150 finishing liquid in a ratio of 7:3.

[0080] The fabric prepared with these materials only generated 1328 negative ions / cm² before washing. 3 After 5 washes, the negative ion generation rate only reached 928 ions / cm³. 3 The concentration of negative ions decreases significantly because fewer chemical bonds are formed between the negative ion finishing agent and the hydroxyl or amine groups on the fiber, resulting in a decrease in the product's wash fastness and antibacterial effect.

[0081] Comparative Example 2

[0082] A method for preparing a cooling negative ion fabric for spring and summer is basically the same as that in Example 1, except that in the cooling finishing process, a crosslinking agent is not used for spraying; instead, a screen printing process is directly performed to apply the compounded microcapsules to the fabric. The resulting fabric has a cooling sensation upon contact before washing. Only 0.18 J / (cm) 2 ·s), after washing 5 times, it feels cool upon contact. Only 0.15 J / (cm) 2 The microcapsules (·s) have poor washability because, in the absence of a cross-linking agent, the microcapsules do not adhere well to the fabric and are easy to fall off.

[0083] Comparative Example 3

[0084] A method for preparing a cooling negative ion fabric for spring and summer is basically the same as that in Example 1, except that a high-density polyethylene fiber / nylon 6 core-sheath composite fiber is blended with modal (25:75) as the inner layer fiber, and a bamboo charcoal fiber blended with modal (25:75) as the outer layer fiber. The resulting blended fabric has a cooling sensation upon contact. Only 0.18 J / (cm) 2 The negative ion generation rate was only 1628 ions / cm³ (·s). 3 The antibacterial and UV protection properties decrease because the ratio of functional fibers in the inner and outer layers decreases, and the cooling sensation and negative ion generation also decrease.

[0085] Comparative Example 4

[0086] A method for preparing a cooling negative ion fabric for spring and summer is basically the same as that in Example 1, except that the blended fabric does not distinguish between inner and outer fibers. Instead, high-density polyethylene fiber / nylon 6 core-sheath composite fiber is directly blended with modal (75:25) and bamboo charcoal fiber with modal (75:25) to form a cooling negative ion fiber. The resulting blended fabric has a cooling sensation upon contact. Only 0.20 J / (cm) 2 The negative ion generation rate was only 2234 ions / cm³ (·s). 3 This is because without the design of inner and outer layers, the smoothness of the layer closest to the skin is insufficient, resulting in a decrease in skin-friendly feel and cooling performance. At the same time, the amount of negative ions generated by the negative ion fibers near the outer side will decrease.

[0087] Example 2

[0088] A double-sided knitted fabric with a cooling, negative ion feel was prepared for spring and summer using a 1:1 blend of high-density polyethylene fiber / nylon 6 core-sheath composite fiber and lyocell (75:25) as the inner layer fiber, and bamboo charcoal fiber and lyocell (75:25) as the outer layer fiber. The inner and outer layer blended fibers were spun in a 1:1 ratio. The fabric weighed 180 grams. A Harrick PDC-32G-2 basic plasma cleaner was used to treat the blended fabric for 9 minutes at a maximum radio frequency power of 18W.

[0089] The above-mentioned blended fabric is given a cooling finish. A spray coating process is used, employing a 5g / L citric acid crosslinking agent solution for quantitative spraying (coating amount 80g / m²). 3 Then, dry at 140℃ for 6 minutes. Mix 70% of the compound microcapsule cooling agent, 20% of the nonionic binder, and 10% of the nonionic thickener into a paste. The compound microcapsules are made by mixing 50g / L of cooling finishing agent COOL (xylitol and peppermint oil nanocapsules) and 50g / L of cooling finishing agent T802 (auto-temperature-regulating microcapsules with higher alkanes as the main component) in a 1:1 ratio. Use screen printing technology for single-sided hydrophobic finishing, with a hydrophobic finishing area of ​​40%. Mix 40% of the compound microcapsule cooling agent, 20% of the polydimethylsiloxane hydrophobic finishing agent, 10% of the citric acid crosslinking agent (concentration of 1g / L), 10% of the sodium alginate solution (concentration of 0.8%), and 20% of deionized water into a paste. The printing pattern is designed as a geometric pattern. After uniformly scraping the paste, pre-dry the fabric at 110℃ for 3 minutes, bake at 140℃ for 3 minutes, and then soap, dry, and iron to obtain the finished product.

[0090] The above-mentioned blended fabric was treated with negative ions. A single-sided foam finishing method was used. Initially, a compound negative ion finishing solution, 2 g / L of foaming agent sodium dodecyl sulfate (SDS), and 1 g / L of foam stabilizer hydroxyethyl cellulose (HEC) were added to a certain volume of water. The pre-set agitator was set to a shear rate of 2000 r / min at room temperature, and the finishing solution was stirred and foamed for 3 minutes to form a negative ion foam composite material. The compound negative ion finishing solution was prepared by mixing 45 g / L of negative ion finishing agent SL-797 (a mixture of tourmaline powder and polyacrylamide) and 45 g / L of negative ion finishing agent JYK AI-350 (a mixture of nano-inorganic metal compounds) in a 7:3 ratio. Subsequently, the compound negative ion finishing solution foam was transferred to the outer layer of the composite fabric using a thin-film applicator. After pre-drying at 80°C for 4 minutes, it was baked at 120°C for 3 minutes.

[0091] The prepared cool-feeling negative ion knitted fabric for spring and summer achieved an air permeability of 388 mm / s and a moisture permeability of 11456 g / (m²). 2 • 24h), UV transmittance (UVA and UVB both less than 5%) and UPF value reach over 50, water absorption rate reaches 113%, drip diffusion time reaches 3s, wicking height reaches 97mm, drying rate reaches 0.3 (g / h), E. coli inhibition rate reaches 80%, and negative ion generation reaches 2578 ions / cm³. 3 Cooling sensation upon contact before washing It can reach 0.21 J / (cm) 2 ·s), after washing 5 times, it feels cool upon contact. It can reach 0.20 J / (cm) 2 ·s).

[0092] Example 3

[0093] A 75:25 blend of high-density polyethylene fiber / nylon 6 core-sheath composite fiber and viscose fiber was selected as the inner layer fiber, and a 75:25 blend of bamboo charcoal fiber and viscose fiber was selected as the outer layer fiber. The inner and outer layer blended fibers were blended in a 1:1 ratio to prepare a cool-feeling negative ion knitted double-sided fabric for spring and summer, with a weight of 180 grams. The blended fabric was treated for 9 minutes using a Harrick basic plasma cleaner PDC-32G-2 at a maximum radio frequency power of 18W.

[0094] The above-mentioned blended fabric is given a cooling finish. A spray coating process is used, employing a 5g / L citric acid crosslinking agent solution for quantitative spraying (coating amount 80g / m²). 3Then, dry at 140℃ for 6 minutes. Mix 70% of the compound microcapsule cooling agent, 20% of the nonionic binder, and 10% of the nonionic thickener into a paste. The compound microcapsules are made by mixing 50g / L of cooling finishing agent COOL (xylitol and peppermint oil nanocapsules) and 50g / L of cooling finishing agent T802 (auto-temperature-regulating microcapsules with higher alkanes as the main component) in a 1:1 ratio. Use screen printing technology for single-sided hydrophobic finishing, with a hydrophobic finishing area of ​​40%. Mix 40% of the compound microcapsule cooling agent, 20% of the polydimethylsiloxane hydrophobic finishing agent, 10% of the citric acid crosslinking agent (concentration of 1g / L), 10% of the sodium alginate solution (concentration of 0.8%), and 20% of deionized water into a paste. The printing pattern is designed as a geometric pattern. After uniformly scraping the paste, pre-dry the fabric at 110℃ for 3 minutes, bake at 140℃ for 3 minutes, and then soap, dry, and iron to obtain the finished product.

[0095] The above-mentioned blended fabric was treated with negative ions. A single-sided foam finishing method was used. Initially, a compound negative ion finishing solution, 2 g / L of foaming agent sodium dodecyl sulfate (SDS), and 1 g / L of foam stabilizer hydroxyethyl cellulose (HEC) were added to a certain volume of water. The pre-set agitator was set to a shear rate of 2000 r / min at room temperature, and the finishing solution was stirred and foamed for 3 minutes to form a negative ion foam composite material. The compound negative ion finishing solution was prepared by mixing 45 g / L of negative ion finishing agent SL-797 (a mixture of tourmaline powder and polyacrylamide) and 45 g / L of negative ion finishing agent JYK AI-350 (a mixture of nano-inorganic metal compounds) in a 7:3 ratio. Subsequently, the compound negative ion finishing solution foam was transferred to the outer layer of the composite fabric using a thin-film applicator. After pre-drying at 80°C for 4 minutes, it was baked at 120°C for 3 minutes.

[0096] The prepared cool-feeling negative ion knitted fabric for spring and summer achieved an air permeability of 367 mm / s and a moisture permeability of 13462 g / (m²). 2 • 24h), UV transmittance (UVA and UVB both less than 5%) and UPF value reach over 50, water absorption rate reaches 134%, drip diffusion time reaches 3s, wicking height reaches 96mm, drying rate reaches 0.3 (g / h), E. coli inhibition rate reaches 80%, and negative ion generation reaches 2365 ions / cm³. 3 Cooling sensation upon contact before washing It can reach 0.22 J / (cm) 2 ·s), after washing 5 times, it feels cool upon contact. It can reach 0.21 J / (cm) 2 ·s).

[0097] Example 4

[0098] A 75:25 blend of jade fiber and modal (inner layer) and a 75:25 blend of bamboo charcoal fiber and modal (outer layer) were used as the outer layer fibers. The inner and outer blended fibers were blended in a 1:1 ratio to prepare a cool-feeling negative ion knitted double-sided fabric for spring and summer, with a weight of 180 grams. The blended fabric was treated for 9 minutes using a Harrick basic plasma cleaner PDC-32G-2 at a maximum radio frequency power of 18W.

[0099] The above-mentioned blended fabric is given a cooling finish. A spray coating process is used, employing a 5g / L citric acid crosslinking agent solution for quantitative spraying (coating amount 80g / m²). 3 Then, dry at 140℃ for 6 minutes. Mix 70% of the compound microcapsule cooling agent, 20% of the nonionic binder, and 10% of the nonionic thickener into a paste. The compound microcapsules are made by mixing 50g / L of cooling finishing agent COOL (xylitol and peppermint oil nanocapsules) and 50g / L of cooling finishing agent T802 (auto-temperature-regulating microcapsules with higher alkanes as the main component) in a 1:1 ratio. Use screen printing technology for single-sided hydrophobic finishing, with a hydrophobic finishing area of ​​40%. Mix 40% of the compound microcapsule cooling agent, 20% of the polydimethylsiloxane hydrophobic finishing agent, 10% of the citric acid crosslinking agent (concentration of 1g / L), 10% of the sodium alginate solution (concentration of 0.8%), and 20% of deionized water into a paste. The printing pattern is designed as a geometric pattern. After uniformly scraping the paste, pre-dry the fabric at 110℃ for 3 minutes, bake at 140℃ for 3 minutes, and then soap, dry, and iron to obtain the finished product.

[0100] The above-mentioned blended fabric was treated with negative ions. A single-sided foam finishing method was used. Initially, a compound negative ion finishing solution, 2 g / L of foaming agent sodium dodecyl sulfate (SDS), and 1 g / L of foam stabilizer hydroxyethyl cellulose (HEC) were added to a certain volume of water. The pre-set agitator was set to a shear rate of 2000 r / min at room temperature, and the finishing solution was stirred and foamed for 3 minutes to form a negative ion foam composite material. The compound negative ion finishing solution was prepared by mixing 45 g / L of negative ion finishing agent SL-797 (a mixture of tourmaline powder and polyacrylamide) and 45 g / L of negative ion finishing agent JYK AI-350 (a mixture of nano-inorganic metal compounds) in a 7:3 ratio. Subsequently, the compound negative ion finishing solution foam was transferred to the outer layer of the composite fabric using a thin-film applicator. After pre-drying at 80°C for 4 minutes, it was baked at 120°C for 3 minutes.

[0101] The prepared cool-feeling negative ion knitted fabric for spring and summer achieved an air permeability of 378 mm / s and a moisture permeability of 13465 g / (m²). 2• 24h), UV transmittance (UVA and UVB both less than 5%) and UPF value reach over 50, water absorption rate reaches 113%, drip diffusion time reaches 3s, wicking height reaches 108mm, drying rate reaches 0.3 (g / h), E. coli inhibition rate reaches 80%, and negative ion generation reaches 2420 ions / cm³. 3 Cooling sensation upon contact before washing It can reach 0.21 J / (cm) 2 ·s), after washing 5 times, it feels cool upon contact. It can reach 0.20 J / (cm) 2 ·s).

[0102] In the above tests, the air permeability test referred to GB / T 5453-1997 "Textiles - Determination of Air Permeability of Fabrics", the washing method test referred to GB / T 8629-2017 "Textiles - Test Procedures for Household Washing and Drying", the moisture permeability test method referred to GB / T 12704.1-2009 "Textiles - Test Methods for Moisture Permeability of Fabrics - Part 1: Moisture Absorption Method", the UV protection performance referred to GB / T 18830-2009 "Evaluation of UV Protection Performance of Textiles", the antibacterial rate test method referred to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles - Part 3: Shaking Method", the water absorption rate, drip diffusion time, wicking height and drying rate test methods all referred to GB / T 21655.1-2023 "Evaluation of Moisture Absorption and Quick-Drying Properties of Textiles - Part 1: Single Combination Test Method", and the negative ion generation test method referred to GB / T 30128-2013 "Detection and evaluation of negative ion generation in textiles", and refer to GB / T 35263-2017 "Detection and evaluation of instantaneous cooling performance of textiles upon contact" for contact cooling performance.

[0103] Table 1

[0104]

[0105] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for preparing a cooling negative ion fabric, characterized in that, include: The inner layer fabric is obtained by blending and interweaving negative ion fibers and cellulose fibers, and the outer layer fabric is obtained by blending and interweaving cooling fibers and cellulose fibers. The inner and outer layers fabrics are then interwoven to obtain the fabric to be finished. The inner layer of the fabric to be treated is sequentially subjected to plasma treatment and cooling microcapsule treatment; the outer layer of the fabric to be treated is sequentially subjected to plasma treatment and negative ion treatment to obtain the cooling negative ion fabric. The inner layer fabric contains 70%-90% negative ion fibers by mass. The outer fabric contains 70%-90% cooling fibers by mass. The mass fraction of the inner layer fabric in the fabric to be treated is 40%-60%; Cellulose fibers are selected from at least one of cotton fibers, modal fibers, lyocell fibers, and viscose fibers; The cooling fiber is selected from at least one of nylon, high-density polyethylene fiber / nylon 6 core-sheath composite fiber and jade fiber; The negative ion fiber is selected from at least one of bamboo charcoal fiber, alloy germanium fiber and rice husk carbon fiber; The plasma treatment step includes: using a plasma cleaner to perform plasma treatment on the inner and outer layers of the fabric to be treated, with a maximum radio frequency power of 17-19W and a treatment time of 6-10 minutes. The cooling microcapsule finishing process includes: first, spraying a 5-10 g / L first crosslinking agent solution onto the inner layer of the fabric to be finished, and then drying it at 110-130℃ for 5-7 minutes, wherein the spraying amount is 70 g / m². 3 -120g / m 3 The inner layer of the fabric to be treated is then treated using compound microcapsules; the first crosslinking agent is selected from at least one of organosilicon crosslinking agents, polycarboxylic acid crosslinking agents, and polyacrylate crosslinking agents. The process of treating the inner layer of the fabric to be treated using compound microcapsules includes: firstly, performing single-sided hydrophobic treatment using screen printing technology, covering an area of ​​30-50%; then, applying a paste containing the compound microcapsules to the inner surface of the fabric to be treated by scraping; pre-drying the fabric at 100-120℃ for 1-3 minutes; then baking it at 130-160℃ for 1-3 minutes; and finally, washing, drying, and ironing to complete the inner layer treatment. The slurry comprises: a cooling finishing agent COOL 8-20 g / L and a cooling finishing agent T802 8-20 g / L, a hydrophobic finishing agent 20-30 wt%, a second crosslinking agent 0.1-1 g / L, a water-based thickener 0.04-0.15%, and the balance being water. The water-based thickener is selected from water-based polyurethane thickeners and natural organic polymer thickeners; the hydrophobic finishing agent is selected from organosilicon hydrophobic agents; the second crosslinking agent is selected from at least one of etherified hydroxymethyl melamine, ethylene oxide, citric acid, and polycarboxylic acids. The negative ion finishing process includes: covering the outer layer of the fabric to be finished with a negative ion foam composite material, followed by pre-drying at 60-80℃ for 2-4 minutes, and then baking at 120-140℃ for 1-3 minutes to complete the outer layer finishing; the negative ion foam composite material includes 28-56 g / L of tourmaline-based negative ion finishing liquid, 12-24 g / L of nano-inorganic metal compound-based negative ion finishing liquid, 2-4 g / L of foaming agent, and 1-2 g / L of foam stabilizer; the raw materials of the negative ion foam composite material are mixed and stirred at a shear rate of 500-2000 r / min for 3-5 minutes to obtain the negative ion foam composite material.

2. A cooling negative ion fabric, characterized in that, It is prepared by the method for preparing the cooling negative ion fabric according to claim 1.

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