A herringbone graphene fabric and a preparation method thereof

Abstract

This application relates to the field of functional fabrics, and more specifically, to a herringbone graphene fabric and its preparation method. The fabric comprises, sequentially from top to bottom, a polyester-spandex layer, a double-sided spandex fabric layer, and a thermal insulation layer. The thermal insulation layer has a graphene herringbone pattern on its surface. The graphene herringbone pattern is obtained by printing with a graphene infiltration agent, which consists of an adhesive and a graphene-containing activator. The graphene-containing activator is composed of the following raw materials by weight percentage: 30-50% nano-graphene, 1-3% tristyrylphenol polyoxyethylene ether, 0.5-2% polyethylene glycol derivative, 1.5-3% modified soybean lecithin, 1-3% N-(3-(trimethoxysilyl)propyl)ethylenediamine, 0.8-1.5% tetramethylammonium cage-like polysilsesquioxane, 0.5-1% processing aids, and solvent to 100%. The graphene herringbone pattern formed above has good heat retention, wear resistance and durability.

Description

Technical Field

[0001] This application relates to the field of functional fabrics, and more specifically, to a herringbone graphene fabric and a method for preparing the same. Background Technology

[0002] Graphene, as a novel nanomaterial of carbon, possesses excellent thermal conductivity and heating properties, antibacterial and bacteriostatic properties, infrared heating, and far-infrared therapy properties. Its application in the textile industry can endow fabrics with functions such as efficient warmth retention and constant temperature heat storage, significantly enhancing the added value and user experience of the fabrics. Currently, graphene fabrics can be used in medical auxiliary fabrics, health care fabrics, indoor and outdoor clothing, home textiles, and other textile products, becoming an important direction for the research and development of functional fabrics.

[0003] As people's demands for quality of life continue to rise, the need for functional textile fabrics is also growing. Consumers not only expect fabrics to have good warmth retention, but also higher requirements for durability and comfort. This has prompted researchers to continuously explore and improve the technology of combining graphene with textile fabrics to meet the market's demand for high-end functional fabrics.

[0004] In existing technologies, various modification and composite methods are mainly used in the industry to achieve the integration of graphene with textile fabrics. Firstly, graphene powder or graphene fibers are mixed and twisted with textile fibers to prepare graphene core-spun yarn or blended yarn, which is then woven to form graphene fabric. Secondly, graphene is blended with auxiliaries such as stearic acid and added to a polypropylene (PP) matrix, and graphene-modified PP sewing thread is prepared through melt spinning for sewing and fixing of composite fabrics. Thirdly, a coating process is used to disperse graphene in inks, coatings, or adhesives, and then adhere it to the fabric surface through methods such as scraping or dip coating, followed by curing to form a graphene functional coating. This process is simple to operate.

[0005] However, existing graphene fabric preparation technologies generally have drawbacks. In the first method, the interfacial bonding between graphene and conventional textile fibers is weak. After prolonged wear and repeated washing, graphene particles easily detach and are lost from the fiber matrix, leading to a rapid decline in the fabric's heat-generating and heat-retaining properties and extremely poor durability. In the second method, graphene exhibits poor dispersion in the PP matrix, with relatively dispersed particle distribution. Furthermore, graphene's high polarity makes it incompatible with non-polar PP materials, hindering the full utilization of graphene's functional properties and damaging the molecular structure of the PP yarn. This significantly reduces the yarn's abrasion resistance, tensile strength, and other mechanical properties, affecting the overall lifespan of the fabric. In the third method, the graphene coating only adheres to the fabric through physical adhesion, resulting in extremely low interfacial adhesion. Daily friction, washing, and rubbing easily lead to problems such as coating peeling, flaking, and powdering, also resulting in insufficient functional durability. Overall, existing technologies cannot simultaneously achieve excellent warmth and heat retention, good wear resistance and durability, and long-term functional stability, making it difficult to meet the multiple usage requirements of high-end functional textile fabrics for wearing comfort, service life, and functional durability. Summary of the Invention

[0006] The purpose of this application is to overcome the above-mentioned technical problems and provide a herringbone graphene fabric and its preparation method.

[0007] In a first aspect, this application provides a herringbone graphene fabric, which is provided with a polyester spandex layer, a spandex double-sided fabric layer and a thermal insulation layer in sequence from the upper surface to the lower surface; the surface of the thermal insulation layer is provided with a graphene herringbone pattern. The graphene herringbone pattern is obtained by printing with a graphene infiltration agent, which is composed of a binder and a graphene-containing activator in a weight ratio of 10:(10-15). The graphene-containing activator is composed of the following raw materials in weight percentage: 30-50% nano-graphene, 1-3% tristyrylphenol polyoxyethylene ether, 0.5-2% polyethylene glycol derivative, 1.5-3% modified soybean lecithin, 1-3% N-(3-(trimethoxysilyl)propyl)ethylenediamine, 0.8-1.5% tetramethylammonium cage-like polysilsesquioxane, 0.5-1% processing aids, and solvent to 100%.

[0008] In the multi-layer composite structure, the polyester-spandex layer has excellent wrinkle resistance, abrasion resistance, and dimensional stability, which can resist daily friction and external force damage from washing; the double-sided spandex fabric layer has both high elasticity and density, ensuring the overall tensile and resilience performance of the fabric, preventing interlayer cracking and fabric deformation during wearing and washing, and also blocking heat loss to help enhance the warmth retention effect; the thermal insulation layer, as a functional carrier of graphene, focuses on heat storage and temperature control. The three-layer structure works together to improve the overall durability of the fabric.

[0009] The herringbone pattern of graphene allows for a larger contact area with the fabric fibers. The gaps between the textures help retain heat, improving the overall aesthetics and thermal insulation efficiency of the fabric. Furthermore, the more uniform mechanical distribution disperses frictional forces, reducing localized wear. A specially formulated graphene printing agent constructs a highly efficient and stable dispersion-penetration-anchoring system. Tristyrylphenol polyoxyethylene ether, polyethylene glycol derivatives, and modified soybean lecithin are combined to form a "multi-level dispersion-deep penetration" composite system, solving the problem of easy agglomeration and difficulty in penetrating fiber pores of nano-graphene. N-(3-(trimethoxysilyl)propyl)ethylenediamine and tetramethylammonium-based cage-like polysilsesquioxane form a synergistic anchoring system, enhancing interfacial bonding and locking the dispersed graphene particles to prevent secondary agglomeration. Ultimately, the printing agent can penetrate into the interior of the insulation layer fibers. After curing, the graphene particles and fibers form a composite bond of "internal anchoring + gap filling". The fabric has a smooth and flat feel. After repeated washing and daily friction, the graphene particles have extremely strong functional stability and retain their functions such as heat preservation, heat retention, and antibacterial properties for a long time. This allows the herringbone graphene fabric to have excellent far-infrared heat preservation performance, outstanding wear and abrasion resistance, excellent washability and durability, and dimensional stability.

[0010] Herringbone graphene fabric can be used in auxiliary medical warming applications, offering excellent frostbite resistance and active warmth retention. For example, in medical infusion settings, medical warming patches made from this fabric can be applied to the patient's wrist infusion site, covering the needle area. Utilizing graphene's efficient thermal conductivity, uniform heating, and heat retention properties, it can alleviate the discomfort caused by excessively low-temperature medication during winter infusions, improving infusion comfort and reducing localized discomfort caused by low-temperature stimulation.

[0011] Preferably, the polyethylene glycol derivative is an alkyl polyethylene glycol ether carboxylate and / or a polyarylalkylphenol polyethylene glycol phosphate.

[0012] When alkyl polyethylene glycol ether carboxylate and / or polyarylene alkylphenol polyethylene glycol phosphate are selected as polyethylene glycol derivatives, their combination with tristyrylphenol polyoxyethylene ether, modified soybean lecithin, etc. can achieve better synergistic effects, further reduce the viscosity of the system, refine the dispersed particle size of graphene, eliminate agglomeration dead zones, and ensure that graphene is uniformly dispersed and easily penetrates into the fiber pores.

[0013] Preferably, the weight ratio of the alkyl polyethylene glycol ether carboxylate to the polyarylene alkylphenol polyethylene glycol phosphate is 1:(0.3-0.5).

[0014] By selecting alkyl polyethylene glycol ether carboxylate and polyarylene alkylphenol polyethylene glycol phosphate in specific weight ratios as polyethylene glycol derivatives, and combining them with auxiliaries such as tristyrylphenol polyoxyethylene ether and modified soybean lecithin, a better synergistic effect is achieved. This further ensures that the nano-graphene is uniformly and stably dispersed in the printing agent, laying a good foundation for the graphene particles to penetrate and adhere to the insulation layer fibers. As a result, the fabric has excellent far-infrared heating and heat preservation properties, outstanding abrasion and rub resistance, excellent washability and durability, and dimensional stability.

[0015] Preferably, the graphene infiltration agent is prepared by the following method: 1) Solvent premixing and dispersant compounding: Tristyrylphenol polyoxyethylene ether, polyethylene glycol derivative, modified soybean lecithin, and processing aids are added to the solvent and stirred until completely dissolved to obtain a compound dispersant solution; 2) Pre-dispersion and activation of nano-graphene: Add nano-graphene to the compound dispersant solution and mix evenly to obtain a pre-dispersion of nano-graphene. 3) Hydrolysis pretreatment: N-(3-(trimethoxysilyl)propyl)ethylenediamine was hydrolyzed and activated to obtain a silane coupling agent hydrolysate; the silane coupling agent hydrolysate was then slowly added dropwise to the nano-graphene pre-dispersion, and the mixture was heated and stirred at a constant temperature to obtain activated mixture A; 4) Cage-like polysilsesquioxane composite modification: Tetramethylammonium cage-like polysilsesquioxane is added to activation mixture A, and the reaction is continued with constant temperature stirring. After the reaction is completed, it is cooled to obtain graphene-containing activated material. 5) Mix the adhesive with the graphene-containing activator evenly to obtain the graphene infiltration agent.

[0016] In multi-layered composite fabrics, the polyester-spandex layer has wrinkle resistance, abrasion resistance, and dimensional stability, serving as a protective layer; the double-sided spandex layer combines high elasticity and density, ensuring tensile resilience and preventing heat loss; the insulation layer carries the function of graphene, and the three work together to form a solid foundation for warmth and durability.

[0017] Graphene herringbone patterns enhance aesthetics and warmth retention while dispersing friction. This preparation method allows the internal additives of the graphene-activated material to work synergistically with the adhesive system, creating a highly efficient synergistic effect. It ensures that the tristyrylphenol polyoxyethylene ether, polyethylene glycol derivatives, and modified soybean lecithin form a highly efficient multi-level dispersion-deep penetration system, guaranteeing uniform graphene dispersion and easy penetration into fiber pores. Simultaneously, N-(3-(trimethoxysilyl)propyl)ethylenediamine and tetramethylammonium-based cage-like polysilsesquioxane form a synergistic anchoring system, preventing secondary graphene agglomeration and eliminating the problem of graphene merely adhering to the surface. This allows the printing agent to quickly and evenly penetrate into the pores and gaps within the insulation layer fibers, forming a strong bond after curing. This ensures that even after multiple washes and frictions, the graphene will not peel off, powder, or flake, maintaining its function for a long time.

[0018] The process involves adding tristyrene-based phenolic polyoxyethylene ether and other substances to a solvent and stirring to obtain a compound dispersant solution, and adding nano-graphene to the solution to obtain a pre-dispersant liquid, laying the foundation for the preparation of graphene-containing activated materials. Through hydrolysis pretreatment and cage-like polysilsesquioxane composite modification, graphene and fabric fibers are effectively combined and their strength is increased. Finally, the graphene infiltration agent obtained by uniformly mixing with the adhesive gives the fabric excellent far-infrared heating and warmth retention, abrasion resistance, washability, durability, and dimensional stability.

[0019] Preferably, the adhesive is composed of an aqueous organosilicon-modified polyurethane dispersion, a modified hydroxypropyl silicone oil emulsion, and a water-white hydrogenated rosin dispersion.

[0020] Waterborne silicone-modified polyurethane dispersion serves as the core adhesive substrate, possessing excellent film-forming properties, flexibility, and fiber adhesion. It also exhibits good water and abrasion resistance, along with excellent compatibility, allowing for close adhesion to fabric fibers. Modified hydroxypropyl silicone oil emulsion softens, levels, and aids penetration, reducing the surface tension of the printing agent system and preventing hardening and cracking of the pattern layer after curing, while also improving the overall wettability of the system. Water-white hydrogenated rosin dispersion acts as a tackifier, further enhancing adhesive strength and curing stability, and preventing interlayer separation. The three components complement each other, forming a strong, flexible, and weather-resistant adhesive substrate that provides a solid carrier for stable graphene adhesion. Furthermore, this adhesive works synergistically with the graphene-activated material's internal additive system, further enhancing dispersion, penetration, and adhesion, eliminating the problem of graphene merely adhering to the surface.

[0021] Preferably, the weight ratio of the aqueous organosilicon-modified polyurethane dispersion, the modified hydroxypropyl silicone oil emulsion, and the water-white hydrogenated rosin dispersion is 10:(0.5-1):(3-4.5).

[0022] When water-based silicone-modified polyurethane dispersion, modified hydroxypropyl silicone oil emulsion, and water-white hydrogenated rosin dispersion are compounded in this weight ratio, they can form an adhesive substrate with strong adhesion, good flexibility, and excellent weather resistance. This provides a solid carrier for the stable adhesion of graphene, further improving the adhesion strength and curing stability, preventing interlayer separation, while also taking into account water washability and abrasion resistance. It also reduces the surface tension of the printing agent system, avoids hardening and cracking of the pattern layer after curing, and improves the overall wettability of the system.

[0023] Preferably, the insulation layer comprises: 1-2% kapok fiber, 20-30% cotton wool, and 63-77% lyocell fiber.

[0024] The insulation layer is made of a blend of velvet fiber, cotton wool, and lyocell fiber. The three fibers work together to achieve better warmth and washability, avoiding damage after frequent washing. The herringbone pattern on the surface of the insulation layer allows more velvet fiber and cotton wool to come into contact with the human body compared to conventional straight patterns, thus improving warmth.

[0025] Preferably, the polyester-spandex layer comprises: 90-96% polyester and 4-10% spandex.

[0026] The three-layer composite structure complements each other. The outer layer, containing 90-96% polyester and 4-10% spandex, has excellent wrinkle resistance, abrasion resistance, and dimensional stability. It can act as a protective layer for the fabric, resisting daily friction and external damage from washing. Together with the middle spandex double-sided fabric layer and the inner insulation layer, it strengthens the fabric's insulation foundation and water resistance and wear resistance from the base material level. It effectively avoids problems such as fabric cracking, deformation, and damage to the insulation layer after frequent washing, and greatly improves the overall durability of the fabric.

[0027] Secondly, a method for preparing herringbone graphene fabric, which is obtained by the following method: 1) Stack the thermal insulation layer, the first hot melt adhesive film, the spandex double-sided fabric layer, the second hot melt adhesive film, and the polyester spandex layer in sequence, and then hot press them together to obtain the composite fabric.

[0028] 2) Print graphene infiltration agent on the surface of the thermal insulation layer of the composite fabric, cure it to form a graphene herringbone pattern, and obtain herringbone graphene fabric.

[0029] A multi-layered composite structure is formed by stitching together a thermal insulation layer, a double-sided spandex fabric layer, and a polyester spandex layer. The three base layers complement each other based on their own material properties and the interlayer bonding structure, which can improve the overall durability of the fabric. Graphene infiltration agent is printed on the surface of the thermal insulation layer and cured to form a graphene herringbone pattern. The herringbone pattern can increase the contact area with the fabric fibers, help lock in heat, improve aesthetics and heat retention efficiency, and disperse external friction. Moreover, the infiltration agent can make graphene and fibers form a firm bond, so that the fabric can retain the heat-generating, heat-retaining, and antibacterial functions of graphene for a long time. It also takes into account the excellent far-infrared heat-generating and heat-retaining performance, outstanding wear and abrasion resistance, excellent washability and durability, and dimensional stability, thus expanding the application scenarios of graphene functional fabrics.

[0030] In summary, this application includes at least one of the following beneficial technical effects: 1. The fabric adopts a three-layer composite structure of polyester spandex layer, spandex double-sided fabric layer and thermal insulation layer, which improves the overall durability of the fabric and avoids problems such as fabric cracking, deformation and thermal insulation layer damage after frequent washing. 2. The graphene herringbone pattern on the surface of the insulation layer increases the contact area between the pattern and the fabric fibers, which helps to lock in heat, improves the heat retention efficiency and aesthetics, disperses external friction forces, reduces local wear, and achieves internal penetration and bonding of fibers through infiltration printing, which solves the problem of easy peeling and falling off of conventional surface printing. 3. The graphene infiltration agent constructs a highly efficient and stable dispersion-penetration-anchoring system, enabling graphene particles and fibers to form a composite bond of "internal anchoring + gap filling". After repeated washing and daily friction, the graphene particles will not fall off, powder, or peel, demonstrating strong functional stability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a herringbone graphene fabric according to this application. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 The present application will be further described in detail with reference to the embodiments.

[0033] Sources of some raw materials: Aqueous silicone-modified polyurethane dispersion: Evonik SILIKOPUR® 8081; Modified hydroxypropyl silicone oil emulsion: IOTA IOTA 2040; Aqueous white hydrogenated rosin: Xiamen Weier Chemical Co., Ltd. WRHR-101; Defoamer: BYK (Germany) BYK-024; OP-10 Jiangsu Haian Petrochemical Plant (Hai Shi Hua), Model: Emulsifier OP-10; Tristyrylphenol polyoxyethylene ether: Clariant Dispersogen PTS; Modified soybean lecithin: TEGO COLOROL® F; N-(3-(trimethoxysilyl)propyl)ethylenediamine: CAS No. 1760-24-3; Tetramethylammonium cage-like polysilsesquioxane: CAS No. 69667-29-4; Alkyl polyethylene glycol ether carboxylate: Clariant Dispersogen ECS; Polyarylalkylphenol polyethylene glycol phosphate: Clariant Dispersogen LFS.

[0034] Graphene Infiltration Agent

[0035] Preparation Example 1 A graphene infiltration agent is prepared by the following method: Solvent premixing and dispersant compounding: The solvent is divided into two parts, the first part accounting for 9 / 10 of the total and the second part accounting for 1 / 10 of the total; the solvent is added to the stirred reactor, and then the tristyrylphenol polyoxyethylene ether, polyethylene glycol derivative, modified soybean lecithin and processing aids are added to the first part of the solvent (water), and stirred at 200 r / min until completely dissolved to obtain the compound dispersant solution; 2) Pre-dispersion and activation of nano-graphene: Add nano-graphene to the compound dispersant solution and continue stirring for 10 minutes to mix it evenly, so as to obtain a pre-dispersion of nano-graphene. 3) Hydrolysis pretreatment: N-(3-(trimethoxysilyl)propyl)ethylenediamine was mixed with the second solvent (50% ethanol by mass) and hydrolyzed for 10 min to obtain a silane coupling agent hydrolysate; then the silane coupling agent hydrolysate was slowly added dropwise at 10 g / min to the nano-graphene predispersant, and the temperature was raised to 80℃ and stirred for 20 min to obtain activated mixture A; 4) Cage-like polysilsesquioxane composite modification: Tetramethylammonium cage-like polysilsesquioxane is added to activation mixture A, and the reaction is continued at a constant temperature and stirred for 30 min. After the reaction is completed, it is cooled to 28℃ to obtain graphene-containing activated material.

[0036] 5) Add 10 kg of binder to 10 kg of graphene-containing activator, increase the stirring speed to 250 r / min, and stir for 20 min to obtain graphene infiltration agent.

[0037] The raw material usage is detailed in Table 1; the processing aid consists of defoamer and OP-10 in a weight ratio of 1:1.

[0038] Preparation Examples 2-3 The difference between Preparation Examples 2-3 and Preparation Example 1 lies in the amount of raw materials used, as shown in Table 1: Table 1. Raw material usage amounts for Preparation Examples 1-3

[0039] Preparation Example 4 The difference between Preparation Example 4 and Preparation Example 2 is that the polyethylene glycol derivative is polyarylene alkylphenol polyethylene glycol phosphate.

[0040] Preparation Example 5 The difference between Preparation Example 5 and Preparation Example 2 is that the polyethylene glycol derivative is composed of alkyl polyethylene glycol ether carboxylate and polyarylene alkylphenol polyethylene glycol phosphate in a weight ratio of 1:1.

[0041] Preparation Example 6 The difference between Preparation Example 6 and Preparation Example 2 is that the adhesive is composed of an aqueous organosilicon-modified polyurethane dispersion and a modified hydroxypropyl silicone oil emulsion in a weight ratio of 10:1.

[0042] Preparation example of graphene infiltration agent Preparation Comparative Example 1: The difference from Preparation Example 2 is that tristyrylphenol polyoxyethylene ether is replaced in equal amounts with polyethylene glycol derivatives.

[0043] Preparation Comparative Example 2: The difference from Preparation Example 2 is that the tetramethylammonium cage-like polysilsesquioxane was replaced in equal amounts with N-(3-(trimethoxysilyl)propyl)ethylenediamine. Preparation of Comparative Example 3: The difference from Preparation Example 2 is that N-(3-(trimethoxysilyl)propyl)ethylenediamine is replaced in equal amounts with tetramethylammonium cage-like polysilsesquioxane.

[0044] Preparation Comparative Example 4: The difference from Preparation Example 2 is that the tristyrylphenol polyoxyethylene ether, polyethylene glycol derivative, modified soybean lecithin, N-(3-(trimethoxysilyl)propyl)ethylenediamine, and tetramethylammonium cage-like polysilsesquioxane were all replaced with silane coupling agent KH570 in equal amounts. Example

[0045] Example 1 A herringbone graphene fabric has a polyester spandex layer, a spandex double-sided fabric layer, and a thermal insulation layer arranged sequentially from the top surface to the bottom surface; the surface of the thermal insulation layer is decorated with a graphene herringbone pattern.

[0046] This herringbone graphene fabric is prepared by the following method: 1) Stack the insulation layer, the first hot melt adhesive film, the spandex double-sided fabric layer, the second hot melt adhesive film, and the polyester spandex layer in sequence, and perform hot pressing using a hot pressing device. The hot pressing temperature is 115℃, the time is 30s, and the pressure is 3Kgf / m. 2 ; to obtain composite fabric.

[0047] 2) The graphene printing agent obtained in Example 1 was coated and printed onto the surface of the thermal insulation layer of the composite fabric using a gravure printing machine, with a printing wet weight of 20 g / m². 2 The printing line speed is 10m / min, and the printing pressure is controlled at 0.5 MPa, so that the graphene printing agent is printed on the surface of the thermal insulation layer and penetrates into the fiber gaps of the thermal insulation layer. The resulting fabric is then conveyed to a curing device for three-stage curing. The first stage curing temperature is 90℃ and the curing time is 2min; the second stage curing temperature is 110℃ and the curing time is 2min; and the third stage curing temperature is 125℃ and the curing time is 1min, forming a graphene herringbone pattern, thus obtaining herringbone graphene fabric.

[0048] The insulation layer comprises 1.8% kapok fiber, 25% cotton wool, and 73.2% lyocell fiber. The polyester-spandex layer comprises 95% polyester and 5% spandex. The spandex double-sided fabric layer has a weight of 80g / m² and a denier (72D); the insulation layer has a weight of 150g / m² and a denier (48D); and the polyester-spandex layer has a weight of 120g / m² and a denier (24D). Both the first and second hot melt adhesive films are TPU hot melt adhesive films, brand and model HENGNING TB95, with a thickness of 0.05mm.

[0049] Examples 2-6 The difference between Examples 2-6 and Example 1 is that the source of the graphene infiltration agent is different, as shown in Table 2. Table 2 Sources of graphene printing agents in Examples 1-6

[0050] Comparative Example

[0051] Comparative Example 1 The difference between Comparative Example 1 and Example 2 is that the graphene infiltration agent prepared in Comparative Example 1 was used.

[0052] Comparative Example 2 The difference between Comparative Example 2 and Example 2 is that the graphene infiltration agent prepared in Comparative Example 2 was used.

[0053] Comparative Example 3 The difference between Comparative Example 3 and Example 2 is that the graphene infiltration agent prepared in Comparative Example 3 was used.

[0054] Performance testing Experiment (1) Thermal insulation performance: GB / T 11048-2018 Determination of thermal and moisture resistance of textiles under steady-state conditions for physiological comfort (evaporative hot plate method); test environment temperature 20℃, relative humidity 65%, test plate temperature 35℃; when the thermal insulation value (Clo value) ≥0.30, it is recorded as qualified.

[0055] Experiment (2) Abrasion resistance: GB / T 21196.4-2007 "Textiles - Martindale Method for Determination of Abrasion Resistance of Fabrics - Part 4: Evaluation of Appearance Changes"; the number of abrasion cycles is set at 10,000.

[0056] After rubbing, use a standard light source box and compare it with the standard sample card under a D65 light source. The pattern peeling evaluation level can be based on a 5-level system (level 5 is no change, level 1 is severe peeling). When the pattern peeling evaluation level is 4 or above, it is considered qualified.

[0057] All of the above experiments (1)-(2) were qualified, and were recorded as having qualified heat insulation and wear resistance performance.

[0058] Experiment (3) Far-infrared performance Both far-infrared emissivity and far-infrared temperature rise were tested in accordance with GB / T 30127-2013. The test was considered qualified when the far-infrared emissivity was ≥0.90% and the far-infrared temperature rise (°C) was ≥2.3.

[0059] Experiment (4) Amount of negative ions generated Negative ion generation: Tested according to GB / T 30128-2013; when the negative ion generation (ions / cm) is ≥800, it is considered qualified.

[0060] All of the above experiments (3)-(4) showed a passing result, which is recorded as a passing result for infrared negative ion performance.

[0061] Experiment (5) Durability: Refer to GB / T 8629-2017; Program type: 4N (standard washing program); Water temperature: 40℃; Detergent concentration: 2 g / L; Number of washes: 50; After 50 washes and drying, the corresponding values ​​are tested according to the testing standards of (1)-(4), and the values ​​before and after washing are calculated. The specific evaluation is as follows: 1) Abrasion resistance: The rating of pattern peeling after 50 washes; 2) Retention rate of heat retention performance, retention rate of far-infrared emissivity, retention rate of far-infrared temperature rise, and retention rate of negative ion generation. Retention rate evaluation level: 95%≦Grade A≦100%; 90%≦Grade B<95%; 85%≦Grade C<90%; Grade D<85%.

[0062] The specific experimental data are shown in Table 3. Table 3. Experimental data of Examples 1-6 and Comparative Examples 1-4

[0063] Combining Example 2 and Comparative Examples 1-4 with Table 3, it can be seen that Comparative Examples 1-4 all failed in infrared negative ion performance, while Comparative Examples 2-4 failed in heat preservation and wear resistance performance. Furthermore, after 50 washes, the retention rates of heat preservation performance, far-infrared emissivity, far-infrared temperature rise, and negative ion generation were all lower than those of Example 2. This indicates that the present application utilizes tristyrene-based polyoxyethylene ether, polyethylene glycol derivatives, modified soybean lecithin, and N-(3... The compounding of (trimethoxysilyl)propyl)ethylenediamine and tetramethylammonium cage-like polysilsesquioxane has a synergistic effect, which can improve the heat retention and wear resistance [heat retention value (Clo value) ≥0.30, pattern peeling evaluation level 4 or above] and infrared negative ion performance [far-infrared emissivity ≥0.90%; far-infrared temperature rise (°C) ≥2.3; negative ion generation (ions / cm) ≥800], while further improving the retention rate after washing and improving its durability.

[0064] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A herringbone graphene fabric, characterized in that, The top and bottom surfaces are sequentially composed of a polyester spandex layer, a spandex double-sided fabric layer, and a thermal insulation layer; the surface of the thermal insulation layer is provided with a graphene herringbone pattern; the graphene herringbone pattern is printed by a graphene infiltration agent; The graphene infiltration agent is composed of a binder and a graphene-containing activator in a weight ratio of 10:(10-15); the graphene-containing activator is composed of the following raw materials in weight percentage: 30-50% nano-graphene, 1-3% tristyrylphenol polyoxyethylene ether, 0.5-2% polyethylene glycol derivative, 1.5-3% modified soybean lecithin, 1-3% N-(3-(trimethoxysilyl)propyl)ethylenediamine, 0.8-1.5% tetramethylammonium cage-like polysilsesquioxane, 0.5-1% processing aids, and solvent to 100%.

2. The herringbone graphene fabric according to claim 1, characterized in that: The polyethylene glycol derivative is an alkyl polyethylene glycol ether carboxylate and / or a polyarylalkylphenol polyethylene glycol phosphate.

3. The herringbone graphene fabric according to claim 1, characterized in that: The weight ratio of the alkyl polyethylene glycol ether carboxylate to the polyarylene alkylphenol polyethylene glycol phosphate is 1:(0.3-0.5).

4. The herringbone graphene fabric according to claim 1, characterized in that: The graphene printing agent is prepared by the following method: 1) Solvent premixing and dispersant compounding: Tristyrylphenol polyoxyethylene ether, polyethylene glycol derivative, modified soybean lecithin, and processing aids are added to the solvent and stirred until completely dissolved to obtain a compound dispersant solution; 2) Pre-dispersion and activation of nano-graphene: Add nano-graphene to the compound dispersant solution and mix evenly to obtain a pre-dispersion of nano-graphene. 3) Hydrolysis pretreatment: N-(3-(trimethoxysilyl)propyl)ethylenediamine was hydrolyzed and activated to obtain a silane coupling agent hydrolysate; the silane coupling agent hydrolysate was then slowly added dropwise to the nano-graphene pre-dispersion, and the mixture was heated and stirred at a constant temperature to obtain activated mixture A; 4) Cage-like polysilsesquioxane composite modification: Tetramethylammonium cage-like polysilsesquioxane is added to activation mixture A, and the reaction is continued with constant temperature stirring. After the reaction is completed, it is cooled to obtain graphene-containing activated material. 5) Mix the adhesive with the graphene-containing activator evenly to obtain the graphene infiltration agent.

5. The herringbone graphene fabric according to claim 1, characterized in that: The adhesive is composed of an aqueous organosilicon-modified polyurethane dispersion, a modified hydroxypropyl silicone oil emulsion, and a water-white hydrogenated rosin dispersion.

6. The herringbone graphene fabric according to claim 5, characterized in that: The weight ratio of the aqueous organosilicon-modified polyurethane dispersion, the modified hydroxypropyl silicone oil emulsion, and the water-white hydrogenated rosin dispersion is 10:(0.5-1):(3-4.5).

7. The herringbone graphene fabric according to claim 1, characterized in that: The insulation layer comprises: 1-2% kapok fiber, 20-30% cotton wool, and 63-77% lyocell fiber.

8. The herringbone graphene fabric according to claim 1, characterized in that: The polyester-spandex layer comprises: 90-96% polyester and 4-10% spandex.

9. A method for preparing herringbone graphene fabric as described in any one of claims 1-8, characterized in that, It is prepared by the following method: 1) Stack the insulation layer, the first hot melt adhesive film, the spandex double-sided fabric layer, the second hot melt adhesive film, and the polyester spandex layer in sequence, and then hot press them together; To obtain composite fabrics; 2) Print graphene infiltration agent on the surface of the thermal insulation layer of the composite fabric, cure it to form a graphene herringbone pattern, and obtain herringbone graphene fabric.

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