Magnetic far-infrared chinlon yarn and preparation method thereof

Abstract

The invention provides a magnetic far-infrared chinlon yarn and a preparation method thereof. The spinning yarn is formed by blending cotton fibers and nanometer materials doped with magnetic and far-infrared functions, the cotton fibers account for 60%-80% of the total weight, the magnetic nanometer materials account for 10%-20% of the total weight, and the far-infrared nanometer materials account for 10%-20% of the total weight. The magnetic nano material and the far infrared nano material are uniformly distributed in the yarn, so that the yarn is endowed with multiple health-care functions including microcirculation improvement, metabolism promotion and antibacterial functions. The preparation method comprises the steps of preparation and surface modification of a nano material, mixed spinning of the nano material and cotton fibers and post-treatment, and is simple, convenient, efficient and controllable in cost. The spinning yarn is suitable for manufacturing textiles with health care functions, such as health care clothes, sports wear, medical protection clothes and the like.

Description

Technical Field

[0001] The invention relates to the technical field of daily necessities, and more particularly to a magnetic far-infrared nylon yarn and a preparation method thereof. Background Art

[0002] As people's health awareness increases, the demand for textiles with health functions is growing. Far-infrared fibers are widely used in health-care clothing and bedding because they can reflect and radiate far-infrared rays from the human body and promote blood circulation and metabolism. At the same time, magnetic fibers are gradually gaining attention because of their ability to improve human microcirculation and relieve fatigue. At present, most of the far-infrared fibers and magnetic fibers on the market have a single function, and the preparation process is complex and the cost is high, making it difficult to meet the comprehensive needs of multi-function, high performance and low cost. Therefore, it is of great application value to develop a nylon yarn with both magnetic and far-infrared functions and provide a simple and efficient preparation method. Summary of the invention

[0003] In view of this, the present invention provides a magnetic far-infrared nylon yarn and a preparation method, which are suitable for radiation in various frequency bands.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A magnetic far-infrared nylon yarn is made by blending cotton fiber and nano-materials doped with magnetic and far-infrared functions, wherein:

[0006] Cotton fibers account for 60%-80% of the total weight;

[0007] The magnetic nanomaterial accounts for 10%-20% of the total weight, and the magnetic nanomaterial is selected from one or more of iron oxide magnetic nanoparticles, cobalt-iron alloy nanoparticles, and nickel-iron alloy nanoparticles;

[0008] The far-infrared nanomaterial accounts for 10%-20% of the total weight, and the far-infrared nanomaterial is selected from one or more of silicon carbide nanoparticles, titanium oxide nanoparticles, and aluminum oxide nanoparticles.

[0009] In one embodiment, the surface of the magnetic nanomaterial is coated with polyvinyl alcohol or polyacrylic acid.

[0010] In one embodiment, the spun yarn is prepared by ring spinning, open-end spinning or other conventional spinning processes.

[0011] In one embodiment, the steps include:

[0012] Step 1: preparing magnetic nanomaterials and far-infrared nanomaterials by chemical precipitation, sol-gel or co-precipitation;

[0013] Step 2: using polyvinyl alcohol or polyacrylic acid to perform surface modification on the magnetic nanomaterial and the far-infrared nanomaterial;

[0014] Step 3: mixing the surface-modified magnetic nanomaterial and the far-infrared nanomaterial with the cotton fiber in a predetermined ratio, and uniformly mixing them using a high-shear blending device;

[0015] Step 4: preparing yarn through conventional spinning process;

[0016] Step 5: The spun yarn is subjected to heat setting and softening finishing processes.

[0017] In one embodiment, polyvinyl alcohol is used as the surface coating agent.

[0018] In one embodiment, the mixing ratio of the cotton fiber and the nanomaterial is 60:15:15.

[0019] In one embodiment, in the post-treatment step, the nanoscale waterproof coating is applied by spraying or dipping.

[0020] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a magnetic far-infrared nylon yarn and a preparation method, which has the following beneficial effects:

[0021] Multiple health care functions:

[0022] By adding magnetic and far-infrared nanomaterials into cotton yarn, the yarn has the health functions of improving human microcirculation, relieving fatigue and promoting metabolism.

[0023] Good softness and comfort:

[0024] Using a high proportion of cotton fiber as the base material to maintain the softness and breathability of the yarn, ensuring wearing comfort.

[0025] Simple and efficient preparation method:

[0026] A simple and easy preparation method is provided, and the production of multifunctional yarn can be realized through conventional spinning process, thereby reducing the production cost. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The invention discloses a magnetic far-infrared nylon yarn and a preparation method thereof.

[0032] The following specific example describes in detail the preparation process of a magnetic far-infrared nylon yarn, covering material selection, nanomaterial preparation and surface modification, spinning mixing, spinning process and post-processing steps. Through this example, it is demonstrated how to achieve uniform dispersion of magnetic and far-infrared functional nanomaterials in the yarn, giving the yarn multiple health functions while maintaining the softness and comfort of the yarn.

[0033] Example 1: Preparation of magnetic far-infrared nylon yarn

[0034] 1. Material Preparation

[0035] Cotton Fiber:

[0036] Specification: 15denier, length 50mm

[0037] Dosage: 60% (weight ratio)

[0038] Magnetic nanomaterials:

[0039] Type: Iron oxide magnetic nanoparticles

[0040] Specification: Particle size 10 nanometers

[0041] Surface modifier: polyvinyl alcohol (PVA)

[0042] Dosage: 15% (weight ratio)

[0043] Far infrared nanomaterials:

[0044] Type: Silicon Carbide Nanoparticles

[0045] Specification: Particle size 20 nanometers

[0046] Surface modifier: polyvinyl alcohol (PVA)

[0047] Dosage: 15% (weight ratio)

[0048] Supplementary materials:

[0049] Polyvinyl alcohol (for surface modification)

[0050] Water-based solvents (such as distilled water)

[0051] High shear blending equipment

[0052] Ring Spinning Machine

[0053] Heat setting equipment

[0054] Soft finishing equipment

[0055] 2. Preparation and surface modification of nanomaterials

[0056] Step 1: Preparation of magnetic nanomaterials

[0057] Methods: Iron oxide magnetic nanoparticles were prepared by chemical precipitation method.

[0058] Specific operations:

[0059] Add appropriate amount of iron salt (such as ferric nitrate) and alkaline solution (such as sodium hydroxide) into the reaction kettle, and slowly add the alkaline solution dropwise under stirring until the pH value reaches 10.

[0060] The reaction temperature was controlled at 80° C. and stirring was continued for 2 hours to allow the iron ions to precipitate to form iron oxide nanoparticles.

[0061] The unreacted products were removed by centrifugation and washing steps to obtain pure iron oxide magnetic nanoparticles.

[0062] Step 2: Preparation of far-infrared nanomaterials

[0063] Methods: Silicon carbide nanoparticles were prepared by sol-gel method.

[0064] Specific operations:

[0065] A silicon source (such as ethyl silicate) and a carbon source (such as methanol) are added to a reaction kettle, and water is slowly added dropwise under stirring to form a sol.

[0066] The reaction temperature was controlled at 60° C. and stirring was continued for 3 hours to allow the sol to gradually gel to form silicon carbide nanoparticles.

[0067] The unreacted products were removed by centrifugation and washing steps to obtain pure SiC nanoparticles.

[0068] Step 3: Surface modification of nanomaterials

[0069] Methods: Polyvinyl alcohol (PVA) was used as a surface modifier.

[0070] Specific operations:

[0071] The prepared iron oxide nanoparticles were added to an aqueous solution containing 5% polyvinyl alcohol and subjected to ultrasonic treatment for 30 minutes to ensure that PVA was evenly coated on the surface of the nanoparticles.

[0072] Similarly, silicon carbide nanoparticles were added to an aqueous solution containing 5% polyvinyl alcohol and ultrasonicated for 30 min to ensure uniform PVA coating.

[0073] Excess PVA was removed by centrifugation and washing steps to obtain surface-modified magnetic and far-infrared nanoparticles.

[0074] 3. Mixing of nanomaterials and cotton fibers

[0075] Step 1: Mixing ratio setting

[0076] Cotton fiber: 60% (weight ratio)

[0077] Iron oxide magnetic nanoparticles: 15% (weight ratio)

[0078] Silicon carbide nanoparticles: 15% (weight ratio)

[0079] Step 2: High Shear Blending

[0080] 60% of cotton fibers, 15% of iron oxide magnetic nanoparticles and 15% of silicon carbide nanoparticles are added into a high shear blending device according to a predetermined ratio.

[0081] High shear force blending equipment is used for uniform mixing to ensure uniform dispersion of nanoparticles in cotton fibers and avoid aggregation.

[0082] The blending process was controlled under high-speed shearing conditions for 30 minutes to obtain uniformly distributed blended fibers.

[0083] 4. Spinning process

[0084] Spinning Method: The yarn is prepared by ring spinning process.

[0085] Specific operations:

[0086] The evenly blended fiber material is fed into a ring spinning machine and prepared into 30-count nylon yarn through a stretching and spinning process.

[0087] Control the tension and speed of the spinning machine to ensure the uniformity and stability of the yarn and avoid yarn breakage and uneven weaving.

[0088] After the yarn passes through the ring spinning machine, it is wound and made into spindles for use.

[0089] 5. Post-processing process

[0090] Step 1: Heat Setting

[0091] Method: Heat setting process was used to stabilize the yarn morphology.

[0092] Specific operations:

[0093] The spun yarn was sent to a heat setting device and subjected to a setting treatment at a temperature of 150° C. for 5 minutes.

[0094] During the shaping process, the yarn is fixed in fiber structure by controlling temperature and pressure to prevent shrinkage and deformation in subsequent processing.

[0095] Step 2: Soft finishing

[0096] Method: Apply softener to improve the softness and feel of the yarn.

[0097] Specific operations:

[0098] The shaped yarn was immersed in an aqueous solution containing 2% softener for 20 minutes.

[0099] The yarn is treated evenly by the softening finishing equipment to ensure that the softener is evenly distributed on the yarn surface.

[0100] The treated yarn is dried to remove excess moisture and softener residue to obtain a soft finished yarn.

[0101] Step 3: Nano-scale waterproof coating

[0102] Method: Nano-scale waterproof coating is applied by spraying.

[0103] Specific operations:

[0104] The softened yarn is wound on the spraying equipment and evenly sprayed with nano-scale waterproof coating agent.

[0105] High-pressure spraying is used to ensure that the waterproof coating is evenly covered on the yarn surface.

[0106] After spraying, the yarn is dried through a drying device to fix the waterproof coating and give the yarn waterproof properties.

[0107] 6. Performance testing and verification

[0108] 6.1 Far infrared radiation test

[0109] Test method: Use an infrared radiation instrument to measure the far-infrared radiation ability of the yarn.

[0110] Test steps:

[0111] The prepared yarn sample is fixed in the infrared radiation testing instrument.

[0112] Record the far-infrared radiation intensity of the yarn under different temperature conditions.

[0113] Test results:

[0114] The yarn can effectively reflect and radiate far-infrared rays at human body temperature (about 37°C), and the radiation intensity is increased by about 30% compared with undoped yarn.

[0115] in conclusion:

[0116] The yarn has significant far-infrared radiation capability, can promote blood circulation and metabolism, and has good health care functions.

[0117] 6.2 Magnetic test

[0118] Test method: The magnetic properties of the yarn were tested using a vibrating sample magnetometer (VSM).

[0119] Test steps:

[0120] The yarn sample was placed in the VSM apparatus and an external magnetic field was applied.

[0121] Measure the magnetic response characteristics of the yarn under different magnetic field strengths.

[0122] Test results:

[0123] The yarn samples showed obvious magnetic response, and the saturation magnetization intensity reached 0.5emu / g, which met the magnetic function requirements.

[0124] in conclusion:

[0125] The yarn has good magnetic response capability, can improve human microcirculation and relieve fatigue.

[0126] 6.3 Antibacterial performance test

[0127] Test method: The ISO 20743 standard antibacterial test method was used to evaluate the inhibitory effect of yarn on common bacteria.

[0128] Test steps:

[0129] The yarn samples were inoculated on Escherichia coli and Staphylococcus aureus culture media.

[0130] After 24 h of incubation, colony forming units (CFU) were measured.

[0131] Test results:

[0132] The inhibition rate of yarn samples on E. coli reached more than 99%;

[0133] The inhibition rate of Staphylococcus aureus reaches over 98%.

[0134] in conclusion:

[0135] The yarn has excellent antibacterial properties, can effectively inhibit bacterial growth, and improve the hygiene of textiles.

[0136] 6.4 Comfort Assessment

[0137] Test method: Wearing test to evaluate the breathability, softness and overall comfort of the yarn.

[0138] Test steps:

[0139] The prepared yarn is knitted into sample garments and volunteers are invited to experience wearing them.

[0140] Record the breathability, softness and comfort of the yarn during wearing.

[0141] Test results:

[0142] Good breathability, sweat evaporates quickly, keeping the skin dry;

[0143] The yarn is soft and the fabric feels comfortable, making it suitable for long-term wear.

[0144] in conclusion:

[0145] The yarn design ensures good air permeability and softness, improving overall wearing comfort.

[0146] 7. Analysis of beneficial effects

[0147] 7.1 Synergistic Effect of Magnetism and Far-Infrared Function

[0148] Multiple health care functions:

[0149] Magnetic nanomaterials can relieve muscle fatigue by improving human microcirculation;

[0150] Far infrared nanomaterials enhance overall health by promoting blood circulation and metabolism.

[0151] Function integration:

[0152] The yarn has both magnetic and far-infrared functions, meeting multiple health needs and increasing the added value of the product.

[0153] 7.2 Material Optimization and Cost Control

[0154] Material selection:

[0155] A high proportion of cotton fiber (60%-80%) ensures the softness and comfort of the yarn;

[0156] A reasonable ratio of magnetic nanomaterials and far-infrared nanomaterials (10%-20% each) achieves a balance between functionality and cost.

[0157] Surface modification:

[0158] Polyvinyl alcohol is used as a surface coating agent to improve the dispersion and adhesion of nanomaterials in fibers and ensure the stability and durability of functional nanomaterials.

[0159] Efficient blending technology:

[0160] Through high shear force blending equipment, the uniform distribution of nanomaterials can be achieved, the overall performance of the yarn can be improved, and functional weak points caused by local aggregation can be avoided.

[0161] 7.3 Balance between comfort and durability

[0162] Comfort layer design:

[0163] The blend of cotton fiber and polyester fiber (70%:30%), combined with plain weaving technology, ensures the softness and breathability of the fabric and improves wearing comfort.

[0164] Protective layer design:

[0165] The blend of polyester fiber and copper fiber (80%:20%), combined with twill weave and nano-level waterproof coating, enhances the wear resistance and waterproof performance of the fabric and extends the service life of the garment.

[0166] The specific embodiments of the present invention illustrate various implementations of structures and functions, but are not limited thereto. Any implementations having the same or equivalent technical effects should be included in the protection scope of the present invention.

[0167] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0168] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic far-infrared nylon yarn, characterized in that: It is made of cotton fiber and nano-materials doped with magnetic and far-infrared functions, including: Cotton fibers account for 60%-80% of the total weight; The magnetic nanomaterial accounts for 10%-20% of the total weight, and the magnetic nanomaterial is selected from one or more of iron oxide magnetic nanoparticles, cobalt-iron alloy nanoparticles, and nickel-iron alloy nanoparticles; The far-infrared nanomaterial accounts for 10%-20% of the total weight, and the far-infrared nanomaterial is selected from one or more of silicon carbide nanoparticles, titanium oxide nanoparticles, and aluminum oxide nanoparticles.

2. The magnetic far-infrared nylon yarn according to claim 1, characterized in that: The surface of the magnetic nano material is coated with polyvinyl alcohol or polyacrylic acid.

3. The magnetic far-infrared nylon yarn according to claim 1, characterized in that: The spun yarn is prepared by ring spinning, open-end spinning or other conventional spinning processes.

4. A method for preparing the magnetic far-infrared nylon yarn according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: preparing magnetic nanomaterials and far-infrared nanomaterials by chemical precipitation, sol-gel or co-precipitation; Step 2: using polyvinyl alcohol or polyacrylic acid to perform surface modification on the magnetic nanomaterial and the far-infrared nanomaterial; Step 3: mixing the surface-modified magnetic nanomaterial and the far-infrared nanomaterial with the cotton fiber in a predetermined ratio, and uniformly mixing them using a high-shear blending device; Step 4: preparing yarn through conventional spinning process; Step 5: The spun yarn is subjected to heat setting and softening finishing processes.

5. The preparation method according to claim 4, characterized in that: In the surface modification step, polyvinyl alcohol is used as a surface coating agent.

6. The preparation method according to claim 4, characterized in that: In the step three, the mixing ratio of the cotton fiber and the nano material is 60:15:

15.

7. The preparation method according to claim 4, characterized in that: In the post-treatment step, the nanoscale waterproof coating is applied by spraying or dipping.