Babu hemp-combined embroidered camouflage clothes and preparation process thereof

Abstract

The invention is suitable for the technical field of garment production, and provides a piece of Babu hemp embroidered camouflage clothing and a preparation process thereof, and the preparation process comprises the following steps: 1) constructing a pattern with Babu hemp embroidered style and camouflage clothing functionality; (2) preparing Babu hemp embroidery style printing paste; (3) pretreating the fabric; 4) printing the printing paste on the pretreated fabric; 5) applying a multifunctional composite finishing agent; (6) printing specific parts of the Babu hemp embroidery style pattern by adopting a thermochromic or photochromic material; and 7) carrying out 3D printing on the key elements of the digitally printed pattern part, and carrying out manual embroidery and embellishment on the edge and the connection part of the 3D part by using a traditional stitching method of Babu hemp embroidery, thereby improving the printing quality of the Babu hemp embroidery style by researching and developing the printing paste of the Babu hemp embroidery style in combination with optimized digital printing process parameters, and improving the printing quality of the Babu hemp embroidery style. The unique style and details of eight-duo hemp embroidery can be accurately presented, and the problem that traditional camouflage clothes are lack of cultural features is solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of garment production, and particularly relates to a camouflage garment combined with Badu embroidery and a preparation process thereof. BACKGROUND

[0002] At present, the design style of camouflage garments on the market is relatively single, mainly traditional camouflage patterns, lacking cultural characteristics and innovation, and difficult to meet the increasingly diversified aesthetic needs of consumers. With the increasing attention of people to the combination of cultural heritage and innovation, the combination of traditional crafts and modern clothing has become a new trend. Badu embroidery, as a traditional embroidery craft with deep cultural heritage, has unique embroidery methods and patterns containing rich cultural connotations. However, Badu embroidery has been mainly applied to traditional clothing or decorations, and its application in modern functional clothing such as camouflage garments is very rare. At the same time, the traditional preparation process of camouflage garments also has limitations in pattern presentation and fabric treatment, and cannot fully display the charm of traditional crafts, so it is urgent to develop an innovative design and preparation process combining Badu embroidery and camouflage garments to realize the perfect combination of cultural heritage and modern clothing functions. SUMMARY

[0003] The application provides a camouflage garment combined with Badu embroidery and a preparation process thereof, and aims to solve the above problems.

[0004] The application is realized as follows: a preparation process of a camouflage garment combined with Badu embroidery, characterized by comprising the following steps: 1) disassembling the embroidery method of Badu embroidery, dividing it into multiple representative patterns, and recombining and arranging the patterns through computer-aided design software to construct patterns with the style of Badu embroidery and the functionality of camouflage garments; 2) preparing Badu embroidery style printing paste, wherein the printing paste comprises modified nano-sized hemp fiber powder, environment-friendly polyurethane adhesive, plant dye-SiO2 composite, high-sunlight-resistant water-based color paste (azo or anthraquinone water-based color paste, light fastness (ISO 105-B02) ≥ 7 levels, and matching with the sunlight resistance performance of plant dye extract), composite paste system, natural polyphenol compounds (such as tea polyphenol, tannic acid extract), antibacterial agent (such as natural source of berberine extract, purity ≥ 90%) and deionized water; The plant dye-SiO2 composite is a red extract of Rubia cordifolia L. roots, which is extracted by water or ethanol, concentrated to a solid content of 30-40%, and compounded with a blue powder extracted from indigo leaves after fermentation. The loading method is as follows: dispersing nano-hollow SiO2 in deionized water with a weight of 5-10 times of the SiO2, and ultrasonic treatment for 10-15 minutes; dissolving the Rubia cordifolia L. red extract and the indigo extract in deionized water at a ratio of 2-4:1 to prepare a mixed dye solution; slowly adding the mixed dye solution into the SiO2 dispersion under stirring, adjusting the pH to 4.0 with acid / alkali (such as citric acid / sodium bicarbonate), and stirring and adsorbing at 50-60°C for 2-4 hours; filtering, washing with deionized water until the filtrate is colorless, and vacuum drying at 60-80°C to obtain the loaded plant dye composite; The polyphenol, as a light stabilizer / antioxidant, cooperates with the physical shielding effect of SiO2 to further improve the light fastness (target ≥ 7-8 grade) and anti-oxidation and color fading ability of the plant dye, and the effect is better than that of using SiO2 alone. The polyphenol itself also has antibacterial and ultraviolet-resistant functions, and enhances the multifunctionality.

[0005] 3) Pre-treating the selected fabric, the pre-treatment solution containing alkaline protease, penetrating agent JFC and deionized water, which is matched with the subsequent digital printing process and finishing process, so that the printed pattern is more easily attached, and the finishing agent is more easily played, thereby improving the overall performance of the camouflage clothing; 4) Using the optimized digital printing process parameters, printing the printing paste on the pre-treated fabric according to the pattern with both the eight-dou embroidery style and the functionality of the camouflage clothing; 5) Applying a multifunctional composite finishing agent to the printed fabric; 6) Printing the eight-dou embroidery style pattern on the specific part of the pattern using a thermochromic or photochromic material to achieve intelligent color-changing design; 7) 3D printing the key elements of the digital printed pattern (using a piezoelectric nozzle (nozzle diameter 30-50 μm), the single-layer jetting amount of the paste is 10-15 pL, the printing temperature is controlled at 25-30°C, the layer thickness is 0.1-0.2 mm, and the 3D pattern is formed by stacking 3-5 layers), and using the traditional needle method of eight-dou embroidery to hand embroider the edges and connecting parts of the 3D part.

[0006] Preferably, the raw materials of the eight-dou embroidery style printing paste are as follows in terms of weight parts: modified nano-sized hemp fiber powder 5-8 parts, environmentally friendly polyurethane adhesive 20-25 parts, plant dye-SiO2 composite 8-10 parts, high-sunlight-resistant water-based color paste 8-12 parts, composite paste system 5-7 parts, natural polyphenol compound 0.5-1.5 parts, antibacterial agent 1-2 parts, and deionized water 40-50 parts.

[0007] Preferably, the preparation method of the modified nanoscale hemp fiber powder is as follows: disperse the nanoscale hemp powder in water, add a cationic modifier (such as 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, CHPTAC, in an amount of 5-10% of the weight of the hemp powder), react under alkaline conditions (pH 10-11) at 60-70°C for 1-2 hours, wash and dry.

[0008] Significantly improve the adsorption capacity of nanoscale hemp powder to anionic dyes (especially plant dyes and color paste), reduce the migration of dyes during washing after printing, improve the clarity and color fastness of printing (especially wet rubbing fastness); the cationic group itself has certain antibacterial properties and has a synergistic antibacterial effect with the antibacterial agent in the formula; enhance the interaction with negatively charged MXene (which may migrate or contact in subsequent finishing), improve the stability of the overall functional coating.

[0009] Preferably, the composite paste system includes the following raw materials in parts by weight: etherified starch paste 3-5 parts, synthetic thickening agent (such as polyacrylic acid, such as Alcoprint PTF) 2-4 parts, rheological modifier (such as fumed silica R972) 0.1-0.3 parts; the polyacrylic acid thickening agent provides high pseudoplasticity, which is beneficial to the formation of droplets and the stability of digital inkjet, and ensures the fineness of the pattern under high resolution; the modified starch provides good water retention and hand feeling; the fumed silica optimizes the thixotropy, prevents the penetration of the paste, ensures the clear outline of the printing, and is particularly suitable for the capillary effect of hemp fibers; this composite system can better suspend and disperse nanoscale hemp powder and SiO2 composite, preventing sedimentation.

[0010] Preferably, the preparation method of the etherified starch paste is as follows: prepare a starch milk with a mass fraction of 30-40% by mixing 100 parts of natural starch with an appropriate amount of deionized water, stir uniformly, add 2-3 parts of sodium hydroxide to adjust the pH value to 10-11, and alkalize for 30-40 minutes; increase the temperature to 40-50°C, slowly introduce 10-15 parts of ethylene oxide into a sealed reaction kettle, and react for 2-3 hours; after the reaction is completed, adjust the pH value to 6-7 with hydrochloric acid, filter and wash the filter cake until there is no chloride ion, and dry and crush at 60-70°C to obtain.

[0011] Preferably, the fabric pretreatment process is to soak the fabric in a solution containing 0.5-1 parts of alkaline protease, 1-2 parts of penetrant JFC, and 97-99 parts of deionized water at 40-50°C for 30-40 minutes, then rinse to neutral and dry at 80-90°C.

[0012] Preferably, the digital printing process parameters are: nozzle height 1.5-2.0 mm, printing resolution 1200-1440 dpi, drying temperature 60-70℃ for 1-2 minutes, then 90-100℃ for 2-3 minutes, printing speed 8-10 m / min. By optimizing the digital printing process parameters, the details and texture of the Bada embroidery pattern can be more accurately presented, and the performance and firmness of the pattern can be further improved by matching with the printing paste.

[0013] Preferably, in the multifunctional composite finishing agent, by weight, the sum of the following components is 100: 6-10 parts of mimosa extract, 0.5-0.9 parts of MXene, 10-15 parts of fluorine-free water repellent, 0.5-1.0 parts of dispersion stabilizer (preferably zwitterionic surfactant such as lauryl amidopropyl hydroxysultaine), and 0.2-0.5 parts of metal ion crosslinking agent (such as aluminum citrate or potassium antimony tartrate). When applying the finishing agent, the padding pressure is 0.3-0.5 MPa, the wet pick-up rate is 60-70%, the pre-drying temperature is 100-110℃, the time is 3-5 minutes, the low-temperature plasma treatment (air or nitrogen atmosphere, power 100-300 W) is 30-90 seconds, and the baking temperature is 150-160℃, the time is 2-3 minutes. The plasma treatment cleans the fiber surface, increases the surface energy, and enables the subsequent baking process to make the finishing agent (especially the MXene sheet) adhere or embed more uniformly and tightly on the fiber surface. It may also produce active groups on the fiber surface to promote chemical bonding with the components of the finishing agent, and improve the uniformity, durability and functionality of the coating.

[0014] The MXene (preferably Ti3C2T X ) is surface passivated before use to delay oxidation by adding a small amount (0.1-0.5% of the weight of MXene) of antioxidant (such as sodium ascorbate) or passivator (such as phosphate) to the MXene dispersion (concentration 1-2 mg / ml) under an inert atmosphere (such as argon) and stirring for 1-2 hours.

[0015] The mimosa extract is pre-treated by mild degradation or enzymatic hydrolysis (such as treatment with cellulase for 1-2 hours) to reduce the molecular weight and improve its penetration into the fiber interior and its binding force with MXene and fiber.

[0016] The degraded / enzymatically hydrolyzed mimosa extract penetrates more easily, improves the hand feeling (softer) of the fiber interior, its polyphenol structure enhances the antioxidant properties, and may also assist in stabilizing MXene.

[0017] The metal ion crosslinking agent can bridge the mimosa extract molecules, MXene sheets and cellulose fibers, significantly improving the wash resistance of the functional coating, and also imparting certain flame retardant synergistic effects.

[0018] Preferably, the thermochromic material is an organic heat-sensitive dye, and the color change temperature range is 15-30 DEG C; the photochromic material is a spiropyran compound.

[0019] Preferably, the traditional needle method of the Bada embroidery is 'one needle to the end' and 'yin-yang embroidery', and the needle density and direction are adjusted according to the 3D shape and the Bada embroidery pattern style during the embroidery process.

[0020] A Bada embroidery camouflage clothing prepared by the above process.

[0021] Compared with the prior art, the embodiments of the present application have the following beneficial effects: The Bada embroidery camouflage clothing provided by the present application can accurately present the unique style and details of the Bada embroidery by developing a Bada embroidery style printing paste and combining with optimized digital printing process parameters, thereby solving the problem of lack of cultural characteristics of traditional camouflage clothing. The multifunctional composite finishing agent cooperates with the printing paste and the fabric pretreatment process to endow the camouflage clothing with waterproof, wear-resistant and breathable properties, improve the fastness and stability of the printed patterns, overcome the limitations of the traditional camouflage clothing preparation process in terms of performance and pattern retention, realize the fusion of Bada embroidery culture and modern camouflage clothing functions, and significantly improve the performance and cultural expression. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a process flow chart of the Bada embroidery camouflage clothing provided by the present application. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature and are not intended to limit the application; the terminology used in the description and the claims of the present application and the above description of drawings includes the terms "comprising", "having" and "including" and their variations thereof and is intended to cover the non-exclusive inclusion; the terms "first", "second" and the like in the description and the claims of the present application and the above description of drawings are used to distinguish different objects and are not intended to describe a particular order.

[0024] In this document, reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another.

[0025] Embodiment 1 The embodiment of the present application provides a kind of to combine eight all embroidery camouflage clothing, as shown in it, preparation process includes the following steps: Figure 1 1) the embroidery method of eight all embroidery is disassembled, is divided into multiple representative patterns, these patterns are recombined and arranged by computer aided design software, and the pattern with eight all embroidery style and camouflage clothing functionality is constructed; 2) eight all embroidery style printing paste is prepared, and the printing paste includes the following components by weight: modified nanoscale hemp fiber powder 5 parts, environmentally friendly polyurethane adhesive 20 parts, plant dye-SiO2 Compound 8 parts, high light fastness water-based color paste (azo or anthraquinone water-based color paste, light fastness (ISO 105-B02) ≥7 level, and the light fastness performance of plant dye extract is matched) 8 parts, composite paste system 5 parts, natural polyphenol compound (such as tea polyphenol, tannic acid extract) 0.5 parts, antibacterial agent (such as natural source berberine extract, purity ≥90%) 1 part and deionized water 40 parts; Wherein, the preparation method of the modified nanoscale hemp fiber powder is as follows: nanometer hemp powder is dispersed in water, cationic modifier (such as 3-chloro-2-hydroxypropyl trimethylammonium chloride, CHPTAC, the amount is 5% of hemp powder weight) is added, and the reaction is carried out at 60 DEG C for 1 hour under alkaline condition (pH 10), and then washed and dried; Further, the plant dye-SiO2 Compound is that plant dye extract is loaded by nano SiO2 (particle size 50 nm), the plant dye extract is concentrated to 30% of solid content after extraction of rubia root by water or ethanol, and the blue powder extracted after fermentation of indigo leaves is compounded to form, and the loading method is as follows: nano hollow SiO2 is dispersed in deionized water with 5 times of its weight, and ultrasonic treatment is carried out for 10 minutes; the rubia red extract and indigo extract are dissolved in appropriate amount of deionized water at a ratio of 2:1 to prepare a mixed dye solution; the mixed dye solution is slowly added to the SiO2 dispersion under stirring, and the pH is adjusted to 4.0 with acid / alkali (such as citric acid / sodium bicarbonate), and the adsorption is carried out at 50 DEG C constant temperature stirring for 2 hours; filtration is carried out, and the filtrate is washed with deionized water until it is colorless, and vacuum drying is carried out at 60 DEG C to obtain the supported plant dye compound; Further, the composite paste system includes the following raw materials by weight: etherified starch paste 3 parts, synthetic thickening agent (such as polyacrylic acid, such as Alcoprint PTF) 2 parts, rheological modifier (such as fumed silica R972) 0.1 part.

[0026] ​The preparation method of the etherified starch paste is as follows: 100 parts of natural starch and an appropriate amount of deionized water are mixed to prepare a starch milk with a mass fraction of 30%. After stirring evenly, 2 parts of sodium hydroxide are added to adjust the pH value to 10 and alkalize for 30 minutes. The temperature is raised to 40°C, and 10 parts of ethylene oxide are slowly introduced into a closed reaction vessel and reacted for 2 hours. After the reaction is completed, the pH value is adjusted to 6 with hydrochloric acid, the filter cake is filtered and washed until there are no chloride ions, and then dried and pulverized at 60°C to obtain the paste.

[0027] 3) Pre-treat the selected fabric in a solution containing 0.5 parts alkaline protease, 1 part penetrant JFC and 97 parts deionized water, soak at 40°C for 30 minutes, then rinse until neutral and dry at 80°C. 4) Using optimized digital printing process parameters, the printing paste is printed on the pre-treated fabric in a pattern that combines the style of Badu hemp embroidery and the functionality of camouflage clothing; the nozzle height is 1.5mm, the printing resolution is 1200-1440dpi, the drying temperature is 60℃ for 1 minute and then 90℃ for 2 minutes, and the printing speed is 8m / min. 5) Apply a multifunctional composite finishing agent to the printed fabric. The multifunctional composite finishing agent contains, by weight, 6 parts of hemp tannin, 0.5 parts of MXene, 10 parts of fluorine-free waterproofing agent, 0.5 parts of dispersion stabilizer (preferably a zwitterionic surfactant, such as lauramide propyl hydroxysulfonyl betaine), and 0.2 parts of metal ion crosslinking agent. When applying the finishing agent, the padding pressure is 0.3 MPa, the liquid retention rate is 60%, the pre-drying temperature is 100°C, the time is 3 minutes, the low-temperature plasma treatment (air or nitrogen atmosphere, power 100W) is 30 seconds, and the baking temperature is 150°C, the time is 2 minutes.

[0028] Among them, the MXene (preferably Ti3C2T) X Before use, surface passivation treatment should be performed to delay oxidation. The method is as follows: under an inert atmosphere (such as argon), add a trace amount (0.1% of the weight of MXene) of antioxidant (such as sodium ascorbate) or passivating agent (such as phosphate) to the MXene dispersion (concentration 1 mg / ml) and stir for 1 hour.

[0029] In this embodiment, the tannin is pre-treated with mild degradation or enzymatic hydrolysis (e.g., treated with cellulase for 1 hour) to reduce its molecular weight and improve its penetration into the fiber and its binding force with MXene and the fiber. 6) On specific parts of the Badu hemp embroidery style pattern, thermochromic or photochromic materials are used for printing to achieve intelligent color-changing design. The thermochromic material is an organic thermosensitive dye with a color-changing temperature range of 15-30℃; the photochromic material is a spiropyran compound. 7) 3D printing of key elements of the pattern part after digital printing (using piezoelectric nozzle (nozzle diameter 40 pm), single-layer slurry spraying amount is 12.5 pL, printing temperature is controlled at 27°C, layer thickness is 0.15 mm, and 4 layers are stacked to form a three-dimensional pattern), and the traditional needle method of Badu embroidery is used for hand embroidery decoration at the edge and connecting part of the 3D part; the traditional needle method of Badu embroidery is "one needle to the end" and "yin and yang embroidery", and the needle density and direction are adjusted according to the 3D shape and Badu embroidery pattern style during the embroidery process.

[0030] Example 2 The embodiment of the present application provides a combination of Badu embroidery and camouflage clothes, as shown in the figure, and the preparation process comprises the following steps: Figure 1 1) Disassemble the embroidery method of Badu embroidery, divide it into multiple representative patterns, recombine and arrange these patterns through computer-aided design software, and construct a pattern with the functions of Badu embroidery style and camouflage clothes; 2) Prepare Badu embroidery style printing paste, the printing paste comprises the following components by weight: modified nano hemp fiber powder 6.5 parts, environmentally friendly polyurethane adhesive 22.5 parts, plant dye-SiO2 compound 9 parts, high-sunlight-resistant water-based color paste (azo or anthraquinone water-based color paste, light fastness (ISO 105-B02) ≥ 7 grade, and the sun resistance performance is matched with the plant dye extract) 10 parts, composite paste system 6 parts, natural polyphenol compound (such as tea polyphenol, tannin extract) 1 part, antibacterial agent (such as natural source of berberine extract, purity ≥ 90%) 1.5 parts and deionized water 45 parts; Wherein, the preparation method of the modified nano hemp fiber powder is as follows: disperse the nano hemp powder in water, add a cationic modifier (such as 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, CHPTAC, the amount is 7.5% of the weight of hemp powder), under alkaline conditions (pH 10.5), 65°C for 1.5 hours, washing and drying; ​Further, the plant dye-SiO2 complex is a plant dye extract loaded by nano-SiO2 (particle size 50 nm), the plant dye extract is a red extract concentrated to a solid content of 35% after extraction of Rubia Cordifolia roots by water or ethanol, and a blue powder extracted after fermentation of indigo leaves, and the loading method is as follows: the nano-hollow SiO2 is dispersed in 7.5 times its weight of deionized water, and ultrasonic treatment is performed for 12.5 minutes; the Rubia Cordifolia red extract and the indigo extract are dissolved in an appropriate amount of deionized water at a ratio of 3:1 to prepare a mixed dye solution; the mixed dye solution is slowly added to the SiO2 dispersion under stirring, the pH is adjusted to 4.0 with acid / alkali (such as citric acid / sodium bicarbonate), and adsorption is performed at 55°C for 3 hours under constant temperature stirring; filtration is performed, washing with deionized water until the filtrate is colorless, and vacuum drying is performed at 70°C to obtain a supported plant dye complex. Further, the complex paste system comprises the following raw materials in parts by weight: etherified starch paste 4 parts, synthetic thickening agent (such as polyacrylic acid, such as Alcoprint PTF) 3 parts, rheological modifier (such as fumed silica R972) 0.2 parts.

[0031] The preparation method of the etherified starch paste is as follows: 100 parts of natural starch is prepared into a starch milk with a mass fraction of 35% by mixing with an appropriate amount of deionized water, and after uniform stirring, 2.5 parts of sodium hydroxide is added to adjust the pH value to 10.5, and alkalization is performed for 35 minutes; the temperature is increased to 45°C, and 12.5 parts of ethylene oxide is slowly introduced into a sealed reaction kettle, and the reaction is performed for 2.5 hours; after the reaction is completed, the pH value is adjusted to 6.5 with hydrochloric acid, the filter cake is filtered and washed until there is no chloride ion, and drying is performed at 65°C, and the product is pulverized.

[0032] 3) The selected fabric is pretreated in a pretreatment solution containing 0.75 parts of alkaline protease, 1.5 parts of penetrant JFC, and 98 parts of deionized water, and soaked at 45°C for 35 minutes, then rinsed to neutral and dried at 85°C; 4) The printing paste is printed on the pretreated fabric according to the optimized digital printing process parameters, and the pattern has the functions of both the eight-dou embroidery style and the camouflage clothing; the nozzle height is 1.7 mm, the printing resolution is 1200-1440 dpi, the drying temperature is first at 65°C for 1.5 minutes, then at 95°C for 2.5 minutes, and the printing speed is 9 m / min; 5) Apply a multifunctional composite finishing agent to the printed fabric. The multifunctional composite finishing agent contains, by weight, 8 parts of hemp tannin, 0.7 parts of MXene, 12.5 parts of fluorine-free waterproofing agent, 0.75 parts of dispersion stabilizer (preferably a zwitterionic surfactant, such as lauramide propyl hydroxysulfonyl betaine), and 0.35 parts of metal ion crosslinking agent. When applying the finishing agent, the padding pressure is 0.4 MPa, the liquid retention rate is 65%, the pre-drying temperature is 105°C, the time is 4 minutes, the low-temperature plasma treatment (air or nitrogen atmosphere, power 200W) is 60 seconds, and the baking temperature is 155°C, the time is 2.5 minutes.

[0033] Among them, the MXene (preferably Ti3C2T) X Before use, surface passivation treatment should be performed to delay oxidation. The method is as follows: under an inert atmosphere (such as argon), add a trace amount (0.3% of the weight of MXene) of antioxidant (such as sodium ascorbate) or passivating agent (such as phosphate) to the MXene dispersion (concentration 1.5 mg / ml) and stir for 1.5 hours.

[0034] In this embodiment, the tannin is pre-treated with mild degradation or enzymatic hydrolysis (e.g., treated with cellulase for 1.5 hours) to reduce its molecular weight and improve its penetration into the fiber and its binding force with MXene and the fiber. 6) On specific parts of the Badu hemp embroidery style pattern, thermochromic or photochromic materials are used for printing to achieve intelligent color-changing design. The thermochromic material is an organic thermosensitive dye with a color-changing temperature range of 15-30℃; the photochromic material is a spiropyran compound. 7) 3D printing of key elements of the digitally printed pattern is performed using a piezoelectric printhead (40μm nozzle diameter), with a single-layer ink spray volume of 12.5pL, a printing temperature controlled at 27℃, a layer thickness of 0.15mm, and 4 layers stacked to form a three-dimensional pattern. The edges and connecting parts of the 3D part are embellished with traditional Badu hemp embroidery stitches. The traditional Badu hemp embroidery stitches are "one stitch to the end" and "yin-yang embroidery". During the embroidery process, the stitch density and direction are adjusted according to the 3D shape and the style of the Badu hemp embroidery pattern.

[0035] Example 3 This invention provides a method for combining Badu hemp embroidery camouflage clothing, such as... Figure 1 As shown, its preparation process includes the following steps: 1) The embroidery techniques of Badu hemp embroidery are deconstructed and divided into several representative patterns. These patterns are then recombined and arranged using computer-aided design software to create a pattern that combines the style of Badu hemp embroidery with the functionality of camouflage clothing. 2) preparing the printing paste of the style of Bada embroidery, which comprises the following components by weight: modified nano hemp fiber powder 8 parts, environmentally friendly polyurethane adhesive 25 parts, plant dye-SiO2 compound 10 parts, high light fastness water-based color paste (azo or anthraquinone water-based color paste, light fastness (ISO 105-B02) ≥ 7 levels, and the light fastness performance is matched with the plant dye extract) 12 parts, composite paste system 7 parts, natural polyphenol compounds (such as tea polyphenols, tannic acid extract) 1.5 parts, antibacterial agent (such as natural source berberine extract, purity ≥ 90%) 2 parts and deionized water 50 parts; The preparation method of the modified nano hemp fiber powder is as follows: the nano hemp powder is dispersed in water, a cationic modifier (such as 3-chloro-2-hydroxypropyl trimethyl ammonium chloride, CHPTAC, the amount is 10% of the weight of the hemp powder) is added, and the reaction is carried out at 70°C for 2 hours under alkaline conditions (pH 11), and then washed and dried. Further, the plant dye-SiO2 compound is a plant dye extract loaded by nano SiO2 (particle size 50 nm), the plant dye extract is a red extract concentrated to a solid content of 40% after extraction of rubia root by water or ethanol, and a blue powder extracted after fermentation of indigo leaves, and the loading method is as follows: the nano hollow SiO2 is dispersed in deionized water with a weight of 10 times, and ultrasonic treatment is carried out for 15 minutes; the rubia red extract and the indigo extract are dissolved in deionized water in a proportion of 4:1 to prepare a mixed dye solution; the mixed dye solution is slowly added to the SiO2 dispersion under stirring, the pH is adjusted to 4.0 with acid / alkali (such as citric acid / sodium bicarbonate), and adsorption is carried out at 60°C for 4 hours; filtration is carried out, washing with deionized water until the filtrate is colorless, and vacuum drying is carried out at 80°C to obtain a loaded plant dye compound. Further, the composite paste system comprises the following raw materials by weight: etherified starch paste 5 parts, synthetic thickening agent (such as polyacrylic acid, such as Alcoprint PTF) 4 parts, rheological modifier (such as fumed silica R972) 0.3 parts.

[0036] The preparation method of the etherified starch paste is as follows: 100 parts of natural starch is prepared into a starch milk with a mass fraction of 40% by adding an appropriate amount of deionized water, stirred uniformly, 3 parts of sodium hydroxide is added to adjust the pH value to 11, alkalization for 40 minutes; the temperature is raised to 50°C, 15 parts of ethylene oxide is slowly introduced into a sealed reaction kettle, and the reaction is carried out for 3 hours; after the reaction is completed, the pH value is adjusted to 7 with hydrochloric acid, the filter cake is filtered and washed until there is no chloride ion, and then dried at 70°C and crushed to obtain.

[0037] 3) Pretreatment of selected fabric with a solution containing 1 part of alkaline protease, 2 parts of penetrant JFC and 99 parts of deionized water, soaking at 50℃ for 40 minutes, then rinsing to neutral and drying at 90℃; 4) Using optimized digital printing process parameters, print the pattern with both the style of Badu embroidery and the functionality of camouflage clothing on the pretreated fabric; nozzle height 2.0mm, printing resolution 1200-1440dpi, drying temperature first at 70℃ for 2 minutes, then at 100℃ for 3 minutes, printing speed 10m / min; 5) Apply multifunctional composite finishing agent to the printed fabric, the multifunctional composite finishing agent contains 10 parts of tannin, 0.9 parts of MXene, 15 parts of fluorine-free waterproof agent, 1.0 parts of dispersion stabilizer (preferably zwitterionic surfactant such as lauryl amidopropyl hydroxysultaine), and 0.5 parts of metal ion crosslinking agent by weight, and the application of finishing agent is at a padding pressure of 0.5MPa, with a liquor retention rate of 70%, a pre-drying temperature of 110℃ for 5 minutes, low-temperature plasma treatment (air or nitrogen atmosphere, power 300W) for 90 seconds, and a curing temperature of 160℃ for 3 minutes.

[0038] The MXene (preferably Ti3C2T X ) is surface passivated before use to delay oxidation by adding a small amount (0.5% of the weight of MXene) of antioxidant (such as sodium ascorbate) or passivator (such as phosphate) under inert atmosphere (such as argon) and stirring for 2 hours.

[0039] In this embodiment, the tannin is pretreated by mild degradation or enzymatic hydrolysis (such as treatment with cellulase for 2 hours) to reduce the molecular weight and improve the permeability into the fiber and the binding force with MXene and fiber; 6) In specific parts of the Badu embroidery pattern, use thermochromic or photochromic materials for printing to achieve intelligent color-changing design, the thermochromic material is organic heat-sensitive dye with a color-changing temperature range of 15-30℃, and the photochromic material is spiropyran compound; 7) 3D printing of key elements in the digital printed pattern using piezoelectric nozzle (nozzle diameter 40μm), with a single layer of slurry spraying amount of 12.5pL, printing temperature controlled at 27℃, layer thickness 0.15mm, and 4 layers of stacking to form a 3D pattern, and the edges and connecting parts of the 3D part are decorated with traditional needlework of Badu embroidery, such as "one needle to the end" and "yin-yang embroidery", and the needle density and direction are adjusted according to the 3D shape and Badu embroidery pattern style during the embroidery process.

[0040] Comparative Example 1: Delete cationic modified flax powder in printing paste, use normal nano flax powder, verify the contribution of cationic modification to color fastness.

[0041] Comparative Example 2: Replace plant dye-SiO2 composite with normal plant dye (not loaded) in printing paste, verify the improvement of SiO2 loading on light fastness.

[0042] Comparative Example 3: Delete natural polyphenolic compounds in printing paste, verify the synergistic effect of polyphenol and SiO2.

[0043] Comparative Example 4: Replace composite paste system with single etherified starch paste (7 parts), verify the improvement of printing precision by composite paste.

[0044] Comparative Example 5: Delete MXene in finishing agent, verify the core role of MXene in infrared stealth / electromagnetic shielding.

[0045] Comparative Example 6: Delete plasma treatment in finishing process, verify the improvement of plasma on coating adhesion.

[0046] Comparative Example 7: No enzymatic treatment of mimosa bark extract, verify the influence of enzymatic treatment on softness and durability.

[0047] Comparative Example 8: Delete hand embroidery step, only keep 3D printing, verify the protection effect of traditional needle method on the integrity of three-dimensional pattern.

[0048] Comparative Example 9: Replace traditional screen printing with digital printing (resolution 600 dpi), verify the expressiveness of high-precision digital printing on cultural details.

[0049] Performance test of camouflage clothes in Examples 1-3 and Comparative Examples 1-9 Test items and standards Cultural expressiveness Pattern fineness: scanning electron microscope observation of embroidery / printing edge definition (ISO 16610); embroidery strength: tensile strength of embroidery thread (GB / T 3923.1) Functionality Infrared stealth: 8-14 μm band emissivity (GJB 2038-94); electromagnetic shielding: X-band (8-12 GHz) shielding effectiveness (ASTM D4935) Color fastness Light fastness (ISO 105-B02); wet rubbing fastness (ISO 105-X12) Durability Washing resistance: retention rate of infrared emissivity / color fastness after 20 washes (AATCC 61-2020) Comfort Air permeability (GB / T 5453); stiffness (GB / T 18318) The test results are as shown in Table 1 below: Table 1

[0050] Note: ↓ indicates significant deterioration compared to Example 2, and ↑ indicates significant deterioration; bold is the key advantage item.

[0051] By comparing the performance test data of Example 2 and Comparative Examples 1-9, the following technical contributions are confirmed: The synergistic system of cationic modified hemp powder + SiO2 loaded plant dyes + polyphenols improves the light fastness to level 8 (only 5.5 for Comparative Example 2); MXene combined with plasma treatment achieves an infrared emissivity of 0.68 and an 88% improvement in wash resistance (emissivity of 0.85 for Comparative Example 5); Hand embroidery makes the strength of the 3D pattern connection part reach 92N (only 65N for Comparative Example 8), solving the problem of easy breakage of 3D printing.

[0052] The above examples are only used to illustrate the technical solutions of the present application, and do not limit the protection scope of the application. Obviously, the described examples are only some of the embodiments of the present application, not all. Based on these examples, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A manufacturing process for a camouflage uniform incorporating Badu hemp embroidery, characterized in that, Includes the following steps: 1) The embroidery techniques of Badu hemp embroidery are deconstructed and divided into several representative patterns. These patterns are then recombined and arranged using computer-aided design software to create a pattern that combines the style of Badu hemp embroidery with the functionality of camouflage clothing. 2) Preparation of printing paste in the style of Badu hemp embroidery; 3) Pre-treat the selected fabric. The pre-treatment solution contains alkaline protease, penetrant JFC, and deionized water. 4) Using optimized digital printing process parameters, the printing paste is printed on the pre-treated fabric according to a pattern that combines the style of Badu hemp embroidery and the functionality of camouflage clothing. 5) Apply a multifunctional composite finishing agent to the printed fabric; 6) On specific parts of the Badu hemp embroidery style pattern, thermochromic or photochromic materials are used for printing to achieve intelligent color-changing design; 7) 3D printing is applied to the key elements of the digitally printed pattern, and the edges and connecting parts of the 3D part are embroidered with traditional Badu hemp embroidery techniques.

2. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 1, characterized in that, The raw materials of the Badu hemp embroidery style printing paste are as follows by weight: 5-8 parts modified nano-grade hemp fiber powder, 20-25 parts environmentally friendly polyurethane adhesive, 8-10 parts plant dye-SiO2 composite, 8-12 parts high lightfast water-based color paste, 5-7 parts composite paste system, 0.5-1.5 parts natural polyphenol compound, 1-2 parts antibacterial agent, and 40-50 parts deionized water.

3. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 2, characterized in that, The modified nano-sized hemp fiber powder is prepared as follows: the nano-hemp powder is dispersed in water, a cationic modifier is added, and the mixture is reacted at 60-70℃ for 1-2 hours under alkaline conditions, followed by washing and drying.

4. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 2, characterized in that, The composite paste system comprises the following raw materials in parts by weight: 3-5 parts of etherified starch paste, 2-4 parts of synthetic thickener, and 0.1-0.3 parts of rheology modifier.

5. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 1, characterized in that, The fabric pretreatment process involves immersing the fabric in a solution containing 0.5-1 parts alkaline protease, 1-2 parts penetrant JFC, and 97-99 parts deionized water at 40-50°C for 30-40 minutes, then rinsing until neutral and drying at 80-90°C.

6. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 1, characterized in that, The multifunctional composite finishing agent comprises, by weight, 6-10 parts of tannin, 0.5-0.9 parts of MXene, 10-15 parts of fluorine-free waterproofing agent, 0.5-1.0 parts of dispersion stabilizer, and 0.2-0.5 parts of metal ion crosslinking agent. When applying the finishing agent, the padding pressure is 0.3-0.5 MPa, the liquid retention rate is 60-70%, the pre-drying temperature is 100-110℃ for 3-5 minutes, the low-temperature plasma treatment is 30-90 seconds, and the baking temperature is 150-160℃ for 2-3 minutes.

7. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 6, characterized in that, The tannin is pre-treated with mild degradation or enzymatic hydrolysis; the MXene is subjected to surface passivation treatment before use to delay oxidation, by adding a trace amount of antioxidant or passivating agent to the MXene dispersion under an inert atmosphere and stirring for 1-2 hours.

8. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 1, characterized in that, The thermochromic material is an organic thermosensitive dye with a color-changing temperature range of 15-30℃; the photochromic material is a spiropyran compound.

9. The preparation process of the Badu hemp embroidery camouflage uniform as described in claim 1, characterized in that, The traditional stitching techniques of Badu hemp embroidery are "one stitch to the end" and "yin-yang embroidery". During the embroidery process, the density and direction of the stitches are adjusted according to the 3D three-dimensional shape and the style of Badu hemp embroidery patterns.

10. A camouflage uniform incorporating Badu hemp embroidery, characterized in that, It is prepared using any one of the processes described in claims 1-9.

Images