Preparation method of underwear fabric with intelligent temperature adjustment and color change functions

Abstract

The invention relates to the technical field of preparation of underwear fabrics, and particularly discloses a preparation method of an underwear fabric with intelligent temperature regulation and color change functions, which comprises the following steps: a yarn preparation stage: preparing intelligent temperature regulation composite fibers: preparing composite fibers from 20% by mass of phase change material microcapsules and polyester fibers through a melt spinning process, the phase change temperature range of the phase change material microcapsules is 30 DEG C; selecting color-changing functional fibers: selecting thermosensitive color-changing fibers as color-changing functional carriers, wherein the color-changing temperature interval is 35 DEG C; in the fabric forming stage, a blending process is conducted, specifically, the intelligent temperature-adjusting composite fibers with the mass ratio being 50%, the color-changing fibers with the mass ratio being 15% and the spandex fibers with the mass ratio being 10% are blended into multifunctional yarn. According to the preparation method of the underwear fabric with the intelligent temperature adjustment and color change functions, the problems that a traditional underwear fabric is unstable in temperature adjustment, low in color change sensitivity, not resistant to washing due to moisture absorption and insufficient in softness are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwear fabric preparation, and in particular to a method for preparing underwear fabric capable of intelligent temperature regulation and color change. Background Art

[0002] As consumers' requirements for wearing comfort and functionality continue to increase, underwear fabrics are developing towards multifunctionality and intelligence. Traditional underwear fabrics only have basic covering and warmth functions, which can no longer meet people's needs in different environments and activity scenarios. Ideal underwear fabrics not only need to have good close-fitting comfort, but also should have intelligent temperature regulation, dynamic visual changes and excellent moisture absorption and breathability.

[0003] In terms of intelligent temperature regulation technology, the application of existing phase change materials in fibers has problems such as poor dispersion and unstable temperature regulation effect. Traditional addition methods easily lead to uneven distribution of phase change material microcapsules in the fibers, affecting the durability and uniformity of the temperature regulation function, and the temperature regulation performance decreases significantly after multiple washes. At the same time, in the realization of the color change function, most thermosensitive or photochromic fabrics have the defects of low color change sensitivity and poor color stability, and cannot achieve rapid and stable color changes in the human activity environment. In terms of sweat absorption performance, although some fabrics have improved their moisture absorption capacity through simple hydrophilic treatment, this treatment method often makes it difficult to form a long-lasting and stable hydrophilic structure. The moisture absorption is greatly reduced after multiple washes. Moreover, a single hydrophilic treatment can easily destroy the original structure of the fiber, causing the fabric to feel hard and affecting wearing comfort. In addition, existing softening finishing technologies usually only focus on the overall softness of the fabric and lack targeted treatment of functional fibers. It is impossible to effectively improve the fiber softness while enhancing the sweat absorption capacity, and it is difficult to achieve the coordinated optimization of multiple functions.

[0004] In summary, the underwear fabrics currently on the market have obvious deficiencies in multifunctional integration and performance stability. There is an urgent need to develop a method for preparing underwear fabrics that can simultaneously achieve intelligent temperature regulation, color change, efficient sweat absorption, and softness and comfort to meet the needs of modern consumers for high-quality functional clothing. Summary of the Invention

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for preparing underwear fabrics that can both intelligently regulate temperature and change color, comprising the following steps: Yarn preparation stage: Preparation of intelligent temperature-regulating composite fibers: 20% by weight of phase change material microcapsules and polyester fibers are melt-spinned to prepare composite fibers, where the phase change temperature range of the phase change material microcapsules is 30°C. Select color-changing functional fiber: Select thermosensitive color-changing fiber as the color-changing functional carrier, and the color-changing temperature range is 35°C; Fabric forming stage: Blending process: 50% by weight of intelligent temperature-regulating composite fiber, 15% by weight of color-changing fiber, and 10% by weight of spandex fiber are blended into multifunctional yarn; Weaving process: The blended yarn is woven into fabric using a weaving process, with a warp and weft density of 30 threads / cm; Post-processing stage: Cleaning process: Wash the fabric with warm water at 45°C for 20 minutes, then centrifuge for 4 minutes at a speed of 900 rpm. Drying process: drying at 85℃ for 12 minutes; Setting process: heat setting at 140℃ for 45 seconds; Functional finishing: Apply nano silver ion antibacterial agent and silicone softener in sequence, with a treatment time of 20-30 minutes.

[0006] Preferably, the phase change material microcapsules are prepared by the following steps: dissolving the phase change material in a cyclohexane organic solvent; Add melamine-formaldehyde resin wall material at a mass ratio of 1:2; The microcapsule structure is formed by interfacial polymerization.

[0007] Preferably, the fabric forming stage uses a Toyota JAT710 loom with a warp tension of 1700 cN and a weft tension of 60 cN.

[0008] Preferably, the functional additives used in the post-finishing stage have the following characteristics: Nano silver ion antibacterial agents achieve antibacterial function by destroying the bacterial cell membrane structure; The chemical structure of silicone softener is polydimethylsiloxane.

[0009] Preferably, in the functional finishing step, the concentration of the nano silver ion antibacterial agent is 15 g / L, and the concentration of the silicone softener is 20 g / L.

[0010] Preferably, the intelligent temperature-regulating composite fiber can also be replaced by a modified composite fiber, and the preparation of the modified composite fiber includes the following steps: First modification: The composite fiber was immersed in a 25 g / L quaternary ammonium salt hydrophilic agent solution and reacted at 55°C for 25 minutes to introduce hydrophilic groups through chemical bonding.

[0011] Second modification: Argon plasma treatment was used with a power of 80 W and a treatment time of 2 minutes, which increased the fiber surface roughness by 40 nm.

[0012] The third modification: the treated fibers were immersed in a 20 g / L nanocellulose solution and dried at 60 °C to form a porous structure.

[0013] Preferably, the nanocellulose is prepared by the following process: Natural cellulose was treated with 65% sulfuric acid solution at 4550°C for 1.5 hours; The nanocellulose suspension was obtained by centrifugation and dialysis.

[0014] Preferably, the modified composite fiber is subjected to a softening treatment, and the specific steps include: Enzyme treatment process: the composite fiber is immersed in a treatment solution containing cellulase, the activity unit of the cellulase is 750 U / mL, the pH value of the treatment solution is 5, the temperature is 50° C., and the treatment time is 45 minutes.

[0015] Organic silicon softener impregnation process: The fiber is impregnated with an amino-modified organic silicon emulsion with a solid content of 25%, the impregnation temperature is 35°C, the time is 25 minutes, and the bath ratio is 1:15.

[0016] Cross-linking and fixing process: Add 1.5% glyoxal cross-linking agent and bake at 90℃ for 2 minutes to firmly bond the softener to the fiber.

[0017] It has the following beneficial effects: This method for preparing underwear fabrics that can both intelligently regulate temperature and change color solves the problems of unstable temperature regulation, low color change sensitivity, poor washability, and insufficient softness of traditional underwear fabrics by optimizing the phase change material microcapsule dispersion process, upgrading the color-changing fiber response performance, and innovating the "chemical grafting-surface etching-nano-coating" sweat-absorbing modification and "enzyme treatment-silicone cross-linking" softening process. It achieves the multifunctional synergy of intelligent temperature regulation, dynamic color change, efficient moisture absorption, and long-lasting softness. The process is suitable for industrial production, significantly improving the comprehensive performance and wearing comfort of the fabric, and meeting consumers' demand for high-end functional underwear. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the first embodiment, the present invention provides a technical solution: a method for preparing underwear fabric that can both intelligently regulate temperature and change color, comprising the following steps: Preparation stage: dissolving the phase change material in a cyclohexane organic solvent; Add melamine-formaldehyde resin wall material at a mass ratio of 1:2; A microcapsule structure is formed by interfacial polymerization reaction for later use; Yarn preparation stage: Preparation of intelligent temperature-regulating composite fibers: 20% by weight of phase change material microcapsules and polyester fibers are melt-spinned to prepare composite fibers, where the phase change temperature range of the phase change material microcapsules is 30°C. Select color-changing functional fiber: Select thermosensitive color-changing fiber as the color-changing functional carrier, and the color-changing temperature range is 35°C; Fabric forming stage: Blending process: 50% by weight of intelligent temperature-regulating composite fiber, 15% by weight of color-changing fiber, and 10% by weight of spandex fiber are blended into multifunctional yarn; Weaving process: The blended yarn is woven into fabric using a weaving process, with a warp and weft density of 30 threads / cm; Post-processing stage: Cleaning process: Wash the fabric with warm water at 45°C for 20 minutes, then centrifuge for 4 minutes at a speed of 900 rpm. Drying process: drying at 85℃ for 12 minutes; Setting process: heat setting at 140℃ for 45 seconds; Functional finishing: Apply nano silver ion antibacterial agent and silicone softener in sequence, the treatment time is 20-30 minutes, the concentration of nano silver ion antibacterial agent is 15g / L, and the concentration of silicone softener is 20g / L.

[0020] By optimizing the preparation process of phase change material microcapsules, its dispersion in composite fibers is significantly improved, ensuring that the fabric can accurately respond to temperature changes during human activity and maintain the body surface temperature in a comfortable range. At the same time, the microcapsule structure design is combined with the post-finishing process to greatly improve the washing resistance of the temperature regulation function, effectively avoiding the problem of performance degradation after multiple washings. At the same time, highly sensitive thermosensitive or photochromic fibers are selected, and by precisely controlling the fiber blending ratio and post-finishing process, the fabric can achieve rapid response to temperature and light and stable color changes. Compared with traditional color-changing fabrics, this solution significantly improves the sensitivity and durability of color changes, meeting the visual presentation requirements in dynamic environments.

[0021] In a second embodiment, the present invention provides a technical solution: a method for preparing underwear fabric that can both intelligently regulate temperature and change color, comprising the following steps: Preparation stage: dissolving the phase change material in a cyclohexane organic solvent; Add melamine-formaldehyde resin wall material at a mass ratio of 1:2; A microcapsule structure is formed by interfacial polymerization reaction for later use; Yarn preparation stage: Preparation of intelligent temperature-regulating composite fibers: 20% by weight of phase change material microcapsules and polyester fibers are melt-spinned to prepare composite fibers, where the phase change temperature range of the phase change material microcapsules is 30°C. First modification: The composite fiber was immersed in a 25g / L quaternary ammonium salt hydrophilic agent solution and reacted at 55°C for 25 minutes to introduce hydrophilic groups through chemical bonding; Second modification: Argon plasma treatment with a power of 80W and a treatment time of 2 minutes increased the fiber surface roughness by 40nm; The third modification: natural cellulose was treated with 65% sulfuric acid solution at 4550°C for 1.5 hours. A nanocellulose suspension was obtained by centrifugation and dialysis. The treated fibers were immersed in 20g / L nanocellulose solution and dried at 60°C to form a porous structure, ultimately obtaining a modified composite material. Select color-changing functional fiber: Select thermosensitive color-changing fiber as the color-changing functional carrier, and the color-changing temperature range is 35°C; Fabric forming stage: Blending process: 50% by weight of modified composite material, 15% by weight of color-changing fiber, and 10% by weight of spandex fiber are blended into multifunctional yarn; Weaving process: The blended yarn is woven into fabric using a weaving process, with a warp and weft density of 30 threads / cm; Post-processing stage: Cleaning process: Wash the fabric with warm water at 45°C for 20 minutes, then centrifuge for 4 minutes at a speed of 900 rpm. Drying process: drying at 85℃ for 12 minutes; Setting process: heat setting at 140℃ for 45 seconds; Functional finishing: Apply nano silver ion antibacterial agent and silicone softener in sequence, the treatment time is 20-30 minutes, the concentration of nano silver ion antibacterial agent is 15g / L, and the concentration of silicone softener is 20g / L; A three-step modification process of "chemical grafting-surface etching-nano-coating" is adopted to introduce hydrophilic groups through chemical bonding, increase the fiber specific surface area, and construct a porous structure to form a long-lasting and stable moisture absorption system. Compared with traditional hydrophilic treatment, this technology achieves an order of magnitude increase in moisture absorption and effectively avoids the problem of insufficient wash resistance.

[0022] In a third embodiment, the present invention provides a technical solution: a method for preparing underwear fabric capable of both intelligent temperature regulation and color change, comprising the following steps: Preparation stage: dissolving the phase change material in a cyclohexane organic solvent; Add melamine-formaldehyde resin wall material at a mass ratio of 1:2; A microcapsule structure is formed by interfacial polymerization reaction for later use; Yarn preparation stage: Preparation of intelligent temperature-regulating composite fibers: 20% by weight of phase change material microcapsules and polyester fibers are melt-spinned to prepare composite fibers, where the phase change temperature range of the phase change material microcapsules is 30°C. First modification: The composite fiber was immersed in a 25g / L quaternary ammonium salt hydrophilic agent solution and reacted at 55°C for 25 minutes to introduce hydrophilic groups through chemical bonding; Second modification: Argon plasma treatment with a power of 80W and a treatment time of 2 minutes increased the fiber surface roughness by 40nm; The third modification: natural cellulose was treated with 65% sulfuric acid solution at 4550°C for 1.5 hours. A nanocellulose suspension was obtained by centrifugation and dialysis. The treated fibers were immersed in 20g / L nanocellulose solution and dried at 60°C to form a porous structure, ultimately obtaining a modified composite material. The modified composite fiber is softened, and the specific steps include: Enzyme treatment process: the composite fiber is immersed in a treatment solution containing cellulase, the activity unit of the cellulase is 750 U / mL, the pH value of the treatment solution is 5, the temperature is 50° C., and the treatment time is 45 minutes.

[0023] Organic silicon softener impregnation process: The fiber is impregnated with an amino-modified organic silicon emulsion with a solid content of 25%, the impregnation temperature is 35°C, the time is 25 minutes, and the bath ratio is 1:15.

[0024] Cross-linking and fixing process: add 1.5% glyoxal cross-linking agent and bake at 90℃ for 2 minutes to firmly bond the softener to the fiber; Select color-changing functional fiber: Select thermosensitive color-changing fiber as the color-changing functional carrier, and the color-changing temperature range is 35°C; Fabric forming stage: Blending process: 50% by weight of modified composite material, 15% by weight of color-changing fiber, and 10% by weight of spandex fiber are blended into multifunctional yarn; Weaving process: The blended yarn is woven into fabric using a weaving process, with a warp and weft density of 30 threads / cm; Post-processing stage: Cleaning process: Wash the fabric with warm water at 45°C for 20 minutes, then centrifuge for 4 minutes at a speed of 900 rpm. Drying process: drying at 85℃ for 12 minutes; Setting process: heat setting at 140℃ for 45 seconds; Functional finishing: Apply nano silver ion antibacterial agent and silicone softener in sequence, the treatment time is 20-30 minutes, the concentration of nano silver ion antibacterial agent is 15g / L, and the concentration of silicone softener is 20g / L.

[0025] Combining cellulase treatment with amino-modified silicone crosslinking significantly improves the fabric's feel by removing fiber hairiness and forming a flexible molecular membrane without disrupting the fabric's moisture-wicking structure. This targeted treatment ensures the fiber's moisture-absorbing properties while imparting a delicate and soft feel.

[0026] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A method for preparing underwear fabric with both intelligent temperature regulation and color change, characterized in that: The steps include: Yarn preparation stage: Preparation of intelligent temperature-regulating composite fibers: 20% by weight of phase change material microcapsules and polyester fibers are melt-spinned to prepare composite fibers, where the phase change temperature range of the phase change material microcapsules is 30°C. Select color-changing functional fiber: Select thermosensitive color-changing fiber as the color-changing functional carrier, and the color-changing temperature range is 35°C; Fabric forming stage: Blending process: 50% by weight of intelligent temperature-regulating composite fiber, 15% by weight of color-changing fiber, and 10% by weight of spandex fiber are blended into multifunctional yarn; Weaving process: The blended yarn is woven into fabric using a weaving process, with a warp and weft density of 30 threads / cm; Post-processing stage: Cleaning process: Wash the fabric with warm water at 45°C for 20 minutes, then centrifuge for 4 minutes at a speed of 900 rpm. Drying process: drying at 85℃ for 12 minutes; Setting process: heat setting at 140℃ for 45 seconds; Functional finishing: Apply nano silver ion antibacterial agent and silicone softener in sequence, with a treatment time of 20-30 minutes.

2. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 1, characterized in that: The phase change material microcapsules are prepared by the following steps: dissolving the phase change material in a cyclohexane organic solvent; Add melamine-formaldehyde resin wall material at a mass ratio of 1:2; The microcapsule structure is formed by interfacial polymerization.

3. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 1, characterized in that: The fabric forming stage uses a Toyota JAT710 loom with a warp tension of 1700 cN and a weft tension of 60 cN.

4. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 1, characterized in that: The functional additives used in the post-finishing stage have the following characteristics: Nano silver ion antibacterial agents achieve antibacterial function by destroying the bacterial cell membrane structure; The chemical structure of silicone softener is polydimethylsiloxane.

5. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 1, characterized in that: In the functional finishing step, the concentration of the nano silver ion antibacterial agent is 15 g / L, and the concentration of the organosilicon softener is 20 g / L.

6. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 1, characterized in that: The intelligent temperature-regulating composite fiber can also be replaced by a modified composite fiber. The preparation of the modified composite fiber includes the following steps: First modification: The composite fiber was immersed in a 25g / L quaternary ammonium salt hydrophilic agent solution and reacted at 55°C for 25 minutes to introduce hydrophilic groups through chemical bonding; Second modification: Argon plasma treatment with a power of 80W and a treatment time of 2 minutes increased the fiber surface roughness by 40nm; The third modification: the treated fibers were immersed in a 20 g / L nanocellulose solution and dried at 60 °C to form a porous structure.

7. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 6, characterized in that: The nanocellulose is prepared by the following process: Natural cellulose was treated with 65% sulfuric acid solution at 4550°C for 1.5 hours; The nanocellulose suspension was obtained by centrifugation and dialysis.

8. The method for preparing underwear fabric capable of intelligent temperature regulation and color change according to claim 6, characterized in that: The modified composite fiber is softened, and the specific steps include: Enzyme treatment process: immerse the composite fiber in a treatment solution containing cellulase, wherein the activity unit of the cellulase is 750 U / mL, the pH value of the treatment solution is 5, the temperature is 50°C, and the treatment time is 45 minutes; Organic silicon softener impregnation process: The fiber is impregnated with amino-modified organic silicon emulsion with a solid content of 25%, the impregnation temperature is 35°C, the time is 25 minutes, and the bath ratio is 1:15; Cross-linking and fixing process: Add 1.5% glyoxal cross-linking agent and bake at 90℃ for 2 minutes to firmly bond the softener to the fiber.