Method for processing moisture-absorbing and sweat-releasing nano coating of chemical fiber home textile fabric

Abstract

The invention discloses a processing method of a moisture-absorbing and sweat-releasing nano coating of a chemical fiber home textile fabric, and solves the problems of poor moisture-absorbing and sweat-releasing performance and the like of chemical fiber fabrics. The method comprises the steps of pretreating chemical fiber fabric; preparing a coating solution containing silicon dioxide nanoparticles and the like; dip-coating the fabric; and carrying out curing treatment, and carrying out antibacterial after-treatment. The method improves moisture absorption and sweat releasing performance and is high in durability. The process is environment-friendly, low in cost and high in efficiency, has the antibacterial function and the like, and is suitable for various chemical fiber fabrics.

Description

Technical Field

[0001] This invention relates to home textile fabrics, specifically to a method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics. Background Technology

[0002] Synthetic fiber home textile fabrics are made of synthetic fibers such as polyester. They are widely used in home textiles due to their high strength and ease of care. However, synthetic fibers lack hydrophilic groups, have poor moisture absorption and sweat conduction, which affects comfort and may also cause skin problems.

[0003] Existing improvement technologies have shortcomings: chemical modification requires a large amount of reagents, which increases costs and may damage fiber properties; traditional coatings improve water absorption but reduce moisture permeability and the coating is easy to peel off; in nanoparticle doping technology, the nanoparticles are poorly dispersed, making it difficult to balance moisture absorption and perspiration.

[0004] Furthermore, existing processes are neither environmentally friendly nor economically viable, utilize harmful organic solvents, consume high energy, and are characterized by long and inefficient processes. Therefore, the development of processing methods that balance multiple performance aspects is an urgent need for the industry. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technologies and provide a method for processing moisture-wicking nano-coatings for chemical fiber home textile fabrics.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this invention is a method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics, including the following steps:

[0007] a) Pretreatment steps: Immerse the chemical fiber fabric in an aqueous solution containing 0.5-2wt% surfactant, sonicate at 40-60℃ for 10-30 minutes, then rinse with deionized water and dry.

[0008] b) Preparation of nano-coating solution: Disperse silica nanoparticles (particle size 10-50nm) in ethanol solution, add 0.1-1wt% silane coupling agent, and stir for 1-3 hours to form a stable dispersion;

[0009] c) Coating application: The pretreated fabric is immersed in the nano-coating solution using the dip-coating method, and then lifted at a speed of 1-5 cm / min, repeated 2-5 times.

[0010] d) Curing treatment: Pre-bake the coated fabric at 80-120℃ for 5-10 minutes, and then bake at 150-180℃ for 10-30 minutes.

[0011] As an improvement, the surfactant is sodium dodecylbenzenesulfonate or a combination of fatty alcohol polyoxyethylene ether.

[0012] As an improvement, the nano-coating solution also contains 0.05-0.5 wt% of a moisture-wicking additive, which is sodium polyacrylate or polyethylene glycol or a combination thereof.

[0013] As an improvement, the surface of the silica nanoparticles is hydrophobically modified, resulting in a contact angle greater than 120°.

[0014] As an improvement, the dip coating process is carried out in a vacuum environment (pressure 0.01-0.1 MPa) to improve coating uniformity.

[0015] As an improvement, the curing process also includes a finishing step, in which the fabric is immersed in a solution containing an antibacterial agent and treated at 60-80°C for 15-30 minutes.

[0016] As an improvement, the antibacterial agent is silver nanoparticles or quaternary ammonium salt compounds, and the amount added is 0.1-1 wt%.

[0017] As an improvement, the chemical fiber fabric is a blend of polyester, nylon, or acrylic.

[0018] The advantages of this invention compared to existing technologies are as follows: This technology significantly improves the moisture absorption and wicking performance of chemical fiber home textile fabrics: the porous structure of the nano-coating enables a water absorption rate exceeding 200%, facilitating rapid moisture absorption; the hydrophobic modified nanoparticles create a "wicking effect," resulting in a moisture permeability ≥10000g / (m²). 2 • 24h), which is more than 50% better than traditional coatings; the micro-nano structure realizes the integration of "moisture absorption-conduction-evaporation" to keep the skin dry.

[0019] Enhanced durability: The silane coupling agent forms chemical bonds, and the performance retention rate is ≥85% after 50 washes; the cross-linked network makes the coating resistant to high temperatures and does not peel off, and the thickness is controllable.

[0020] The process has environmental and cost advantages: using ethanol as the dispersion medium, the recovery rate exceeds 90%; the number of processes is reduced by 3-4, efficiency is increased by 30%, and costs are reduced by 20-30%; the curing temperature is lowered, and energy consumption is reduced by 15%.

[0021] It also achieves multi-functional integration: antibacterial rate ≥98%, still >95% after 50 washes; keeps the fabric soft, with a breaking strength loss of <5%, and is suitable for a variety of chemical fiber and blended fabrics. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the moisture-wicking nano-coating processing method for chemical fiber home textile fabrics according to the present invention. Detailed Implementation

[0023] To facilitate understanding of this application, a more comprehensive description will be provided below with reference to the accompanying drawings. Referring to the drawings, the method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics includes the following steps:

[0024] a) Pretreatment steps: Immerse the chemical fiber fabric in an aqueous solution containing 0.5-2wt% surfactant, sonicate at 40-60℃ for 10-30 minutes, then rinse with deionized water and dry.

[0025] b) Preparation of nano-coating solution: Disperse silica nanoparticles (particle size 10-50nm) in ethanol solution, add 0.1-1wt% silane coupling agent, and stir for 1-3 hours to form a stable dispersion;

[0026] c) Coating application: The pretreated fabric is immersed in the nano-coating solution using the dip-coating method, and then lifted at a speed of 1-5 cm / min, repeated 2-5 times.

[0027] d) Curing treatment: Pre-bake the coated fabric at 80-120℃ for 5-10 minutes, and then bake at 150-180℃ for 10-30 minutes.

[0028] The surfactant is sodium dodecylbenzenesulfonate or a combination of fatty alcohol polyoxyethylene ether.

[0029] The nano-coating solution also contains 0.05-0.5 wt% of a moisture-wicking additive, which is sodium polyacrylate or polyethylene glycol or a combination thereof.

[0030] The surface of the silica nanoparticles has been hydrophobically modified, and the contact angle is greater than 120°.

[0031] The dip coating process is carried out in a vacuum environment (pressure 0.01-0.1MPa) to improve coating uniformity.

[0032] The curing process also includes a finishing step, in which the fabric is immersed in a solution containing an antibacterial agent and treated at 60-80°C for 15-30 minutes.

[0033] The antibacterial agent is silver nanoparticles or quaternary ammonium salt compounds, and the amount added is 0.1-1 wt%.

[0034] The chemical fiber fabric is made of polyester, nylon, or acrylic, or a blend thereof.

[0035] The fabric surface is formed with a continuous nano-coating with a thickness of 50-200 nm, and the moisture permeability is ≥10000 g / (m²). 2 •24h), water absorption rate ≥200%.

[0036] The nano-coating forms a micro-nano hierarchical structure on the fabric surface, with a static contact angle of 100-130° and a roll-off angle of ≤10°.

[0037] Example 1: Moisture-wicking nano-coating processing of polyester home textile fabrics:

[0038] Fabric pretreatment: Immerse 500g of polyester plain weave fabric in 20L of an aqueous solution containing 1wt% sodium dodecylbenzenesulfonate, and sonicate at 50℃ for 20 minutes. The ultrasonic frequency is set to 40kHz, and the power density is 0.5W / cm². 2 After treatment, rinse three times with deionized water and dry in an oven at 80°C until constant weight.

[0039] Preparation of the nano-coating solution: 50g of surface-modified hydrophobic silica nanoparticles (average particle size 30nm, contact angle 135°) were added to 2L of ethanol. After mechanical stirring for 30 minutes, 10g of silane coupling agent KH-570 was slowly added dropwise, and stirring was continued for 2 hours to form a uniform dispersion. Subsequently, 2g of sodium polyacrylate (molecular weight 5000) was added as a moisture-wicking additive, and ultrasonically dispersed for 15 minutes.

[0040] Coating application and curing: Using a vacuum dip-coating device, the pretreated fabric is immersed in the nano-coating solution and maintained under a vacuum of 0.05 MPa for 5 minutes, then pulled up at a uniform speed of 3 cm / min. After repeating the dip-coating three times, the fabric is pre-baked at 100℃ for 8 minutes, and then placed in a baking oven at 160℃ for curing for 20 minutes.

[0041] Post-treatment: Prepare an aqueous solution containing 0.5wt% nano silver antibacterial agent, immerse the cured fabric in it, soak at 70℃ for 25 minutes, and then wash and dry.

[0042] This technology significantly improves the moisture absorption and wicking performance of synthetic fiber home textile fabrics: the porous structure of the nano-coating enables a water absorption rate exceeding 200%, facilitating rapid moisture absorption; the hydrophobic modified nanoparticles create a "wicking effect," resulting in a moisture permeability ≥10000g / (m²). 2 • 24h), which is more than 50% better than traditional coatings.

[0043] The present invention and its embodiments have been described above, and such description is not restrictive.

Claims

1. A method for processing moisture-wicking and perspiration-absorbing nano-coatings on chemical fiber home textile fabrics, characterized in that: Includes the following steps: a) Pretreatment steps: Immerse the chemical fiber fabric in an aqueous solution containing 0.5-2wt% surfactant, sonicate at 40-60℃ for 10-30 minutes, then rinse with deionized water and dry. b) Preparation of nano-coating solution: Disperse silica nanoparticles (particle size 10-50nm) in ethanol solution, add 0.1-1wt% silane coupling agent, and stir for 1-3 hours to form a stable dispersion; c) Coating application: The pretreated fabric is immersed in the nano-coating solution using the dip-coating method, and then lifted at a speed of 1-5 cm / min, repeated 2-5 times. d) Curing treatment: Pre-bake the coated fabric at 80-120℃ for 5-10 minutes, and then bake at 150-180℃ for 10-30 minutes.

2. The method for processing moisture-wicking and perspiration-absorbing nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The surfactant is sodium dodecylbenzenesulfonate or a combination of fatty alcohol polyoxyethylene ether.

3. The method for processing moisture-wicking and perspiration-absorbing nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The nano-coating solution also contains 0.05-0.5 wt% of a moisture-wicking additive, which is sodium polyacrylate or polyethylene glycol or a combination thereof.

4. The method for processing moisture-wicking and perspiration-wicking nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The surface of the silica nanoparticles has been hydrophobically modified, resulting in a contact angle greater than 120°.

5. The method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The dip coating process is carried out in a vacuum environment (pressure 0.01-0.1MPa) to improve coating uniformity.

6. The method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The curing process also includes a finishing step, in which the fabric is immersed in a solution containing an antibacterial agent and treated at 60-80°C for 15-30 minutes.

7. The method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics according to claim 6, characterized in that: The antibacterial agent is silver nanoparticles or quaternary ammonium salt compounds, and the amount added is 0.1-1 wt%.

8. The method for processing moisture-wicking nano-coatings on chemical fiber home textile fabrics according to claim 1, characterized in that: The chemical fiber fabric is made of polyester, nylon, or acrylic, or a blend thereof.

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