Yarn with hollow glass bead skin layer

Abstract

The utility model provides a yarn with a hollow glass bead leather layer, which comprises a yarn body and a TPU (thermoplastic polyurethane) leather layer wrapped on the surface of the yarn body, hollow glass beads are embedded in the TPU leather layer, and the thickness of the TPU leather layer is 50-200 microns; the diameter of the hollow glass beads ranges from 30 micrometers to 160 micrometers, the yarn body is made of one of chinlon, polyester, spandex, cotton yarn and silk, and the hollow glass beads are evenly dispersed in the TPU skin layer. The yarn with the hollow glass bead skin layer has the advantages of light weight, heat preservation, heat insulation, stab resistance, cutting resistance and the like, and the hollow glass beads are good in cohesiveness with TPU, can be evenly dispersed in a solution, are not prone to falling off in the TPU skin layer and are not prone to damage in the process of being prepared and coated on the surface of the yarn. The yarn with the hollow glass bead skin layer can be produced on a large scale, and is high in efficiency, simple in process, low in cost and good in quality.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a yarn with a hollow glass microbead skin layer. Background Art

[0002] As a new type of material developed in my country in recent years, hollow glass microspheres have received widespread attention due to their relatively low price and excellent properties such as light weight, high strength, heat insulation, fire resistance and corrosion resistance. The Chinese patent with publication number CN104878472A discloses a waterproof and breathable textile material and a preparation method thereof, which is prepared by doping hollow glass microspheres and other components in the components and drawing them under high temperature and high pressure to obtain a waterproof and breathable textile material. Although the above method can prepare waterproof and breathable textile materials, the hollow glass microspheres are easily damaged under high temperature and high pressure and are unevenly distributed in the components, resulting in uneven distribution of microspheres on the surface of the prepared material. The Chinese patent with publication number CN111424329A discloses a fireproof cloth and a preparation method thereof, which is prepared by arranging hollow glass microspheres loaded with black titanium dioxide and hafnium oxide on fibers to make fireproof fibers, and then using the fireproof fibers to weave into fireproof cloth. Although the above method can prepare fireproof cloth, the hollow glass microsphere solution will cause a large number of hollow glass microspheres to be damaged under high-speed stirring, thereby affecting the fireproof performance of the fireproof cloth.

[0003] In view of this, it is necessary to design an improved yarn with a hollow glass microbead skin layer to solve the above problems. Utility Model Content

[0004] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide a yarn with a hollow glass microbead skin layer, so that the hollow glass microbeads have strong adhesion in the TPU skin layer and are not easy to fall off; the hollow glass microbeads are not easy to be damaged during the process of preparation and coating on the surface of the yarn body, and are evenly dispersed in the TPU skin layer on the surface of the yarn body; after the hollow glass microbeads are coated on the yarn body, the prepared yarn has the advantages of lightweight, thermal insulation, puncture resistance and cut resistance.

[0005] To achieve the above purpose, the utility model provides a yarn with a hollow glass microbead skin layer, comprising a yarn body and a TPU skin layer wrapped on the surface of the yarn body, wherein the TPU skin layer is inlaid with hollow glass microbeads. The thickness of the TPU skin layer is 50 μm to 200 μm, and the diameter of the hollow glass microbeads is 30 μm to 160 μm.

[0006] As a further improvement of the utility model, the yarn body is one of nylon, polyester, spandex, cotton yarn and silk.

[0007] As a further improvement of the utility model, the hollow glass microspheres are uniformly dispersed in the TPU skin layer.

[0008] As a further improvement of the present invention, the cross section of the yarn with the hollow glass microbead skin layer is circular.

[0009] As a further improvement of the present invention, the diameter of the yarn body is 50 μm to 1000 μm.

[0010] As a further improvement of the present invention, the hollow glass microspheres are made of silicon dioxide.

[0011] As a further improvement of the utility model, the hollow glass microspheres are hollow inside and filled with inert gas.

[0012] As a further improvement of the present invention, the inert gas is nitrogen or carbon dioxide.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model provides a yarn with a hollow glass microbead skin layer, comprising a yarn body and a TPU skin layer wrapped on the surface of the yarn body, wherein the hollow glass microbeads are embedded in the TPU skin layer. The hollow glass microbeads are treated with a silane coupling agent in an ethanol solution, the treated hollow glass microbeads are added to the TPU solution, and the solution is slowly stirred to obtain a TPU solution in which the hollow glass microbeads are suspended, the TPU solution in which the hollow glass microbeads are suspended is coated on the surface of the yarn, and the yarn with the hollow glass microbead skin layer is obtained by drying and curing in a drying oven. The prepared yarn has the advantages of being lightweight, heat-insulating, and puncture-resistant and cut-resistant.

[0015] (2) The hollow glass microspheres are treated with a coupling agent in advance, which can make the hollow glass microspheres have better adhesion to TPU, can be better dispersed in the solution and are not easy to fall off in the TPU skin layer; the hollow glass microspheres are not easy to be damaged during the preparation and coating process on the yarn surface.

[0016] (3) The yarn with the hollow glass microbead skin provided by the utility model can be mass-produced with high efficiency, simple process, low cost and good quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the yarn with a hollow glass microbead skin provided by the utility model.

[0018] Figure 2 This is a cross-sectional view of a yarn with a hollow glass microbead skin provided by the utility model.

[0019] Figure 3 This is a diagram showing the thermal insulation effect of the yarn body in Example 1 of the utility model.

[0020] Figure 4 This is a diagram showing the thermal insulation effect of the yarn with a hollow glass microbead skin layer provided in Example 1 of the utility model.

[0021] Figure 5 This is a diagram showing the thermal insulation effect of the yarn with a hollow glass microbead skin layer provided in Example 2 of the utility model.

[0022] Figure 6 This is a diagram showing the thermal insulation effect of the yarn with a hollow glass microbead skin layer provided in Example 3 of the utility model.

[0023] Figure 7 This is a diagram showing the thermal insulation effect of the yarn with a hollow glass microbead skin layer provided in Example 4 of the utility model.

[0024] Figure 8 This is a diagram showing the thermal insulation effect of the yarn with a hollow glass microbead skin layer provided in Example 5 of the utility model.

[0025] Reference numerals

[0026] 1-yarn body; 2-hollow glass microbeads; 3-TPU skin layer. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0029] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0030] The utility model provides a yarn with a hollow glass microbead cortex, comprising a yarn body 1 and a TPU cortex 3 wrapped on the surface of the yarn body 1, wherein hollow glass microbeads 2 are embedded in the TPU cortex 3. The thickness of the TPU cortex 3 is preferably 50 μm to 200 μm. In this way, the TPU cortex 3 can well fix the hollow glass microbeads 2, is not easy to fall off, and ensures the softness and air permeability of the cortex. At the same time, it can also achieve good anti-puncture and anti-cut performance under the premise of ensuring the lightness of the product. The specific thickness can be adjusted according to different usage scenarios and functional requirements; the diameter of the hollow glass microbead 2 is preferably 30 μm to 160 μm, and the smaller the diameter of the hollow glass microbead 2, the lower the thermal resistance, which will reduce the thermal insulation performance; too large a diameter will affect the softness and comfort of the fabric, therefore, the diameter range between 30 μm and 160 μm can better balance the strength of the hollow glass microbead 2 and the thermal insulation effect of the yarn, and ensure the actual effectiveness of the yarn performance.

[0031] The yarn body 1 is preferably one of nylon, polyester, spandex, cotton yarn and silk.

[0032] The diameter of the yarn body 1 is preferably 50 μm to 1000 μm, which can ensure its durability and tensile strength.

[0033] The hollow glass microspheres 2 are evenly embedded in the TPU skin layer 3, which not only ensures the beautiful and coordinated appearance of the yarn, but also increases the thermal insulation effect and comfort of the yarn. TPU is a thermoplastic polyurethane elastomer, a polymer material with good elasticity and strength, and has the characteristics of wear resistance, scratch resistance, and good toughness. The combination of hollow glass microspheres 2 and TPU can provide a certain physical protection barrier for the yarn to prevent sharp objects from directly penetrating the yarn. By optimizing the structural design and controlling the thickness of the TPU skin layer 3, the impact resistance and buffering effect of the yarn can be enhanced, and the ability to resist puncture and cut can be improved.

[0034] The hollow glass microspheres 2 are preferably made of silicon dioxide, and have a hollow structure inside filled with inert gas. The inert gas is preferably nitrogen or carbon dioxide, which can reduce the specific gravity and density of the material and increase its thermal insulation performance.

[0035] The cross section of the yarn with the hollow glass microbead skin layer provided by the utility model is circular.

[0036] The method for preparing the above-mentioned yarn having a hollow glass microbead skin layer comprises the following steps:

[0037] S1. Treat hollow glass microspheres 2 with a silane coupling agent in an ethanol solution.

[0038] Specifically, the method for treating the hollow glass microspheres 2 is as follows: take ethanol into a container, add a silane coupling agent, shake in a shaker at room temperature for 2 to 3 hours, add the hollow glass microspheres 2, shake in a shaker at 60 to 65° C. for 2 to 3 hours, take out, dry in an electric drying oven at 60 to 65° C. until the ethanol in the bottle is completely evaporated, take out the hollow glass microspheres 2 and dry them at 120° C. for 6 hours.

[0039] In the above steps, the amount of the silane coupling agent used is 0.5% of the mass of the hollow glass microspheres 2.

[0040] S2. Add the treated hollow glass microspheres 2 into the TPU solution and stir slowly to obtain a TPU solution in which the hollow glass microspheres are suspended.

[0041] Specifically, the TPU solution includes 10% to 30% of TPU particles as a solute, and the solvent is DMF. DMF (N,N-dimethylformamide) has good solubility, can dissolve TPU particles well, and can shape and fix the material by evaporation during curing.

[0042] In the TPU solution in which the hollow glass microspheres are suspended, the mass ratio of the hollow glass microspheres 2 to the TPU is 1:(1-3).

[0043] In the above steps, the stirring time is 10 to 12 hours.

[0044] S3, the TPU solution of the hollow glass microbeads obtained in step S2 is connected to the digital liquid push pump through the infusion tube, the digital liquid push pump is connected to the upper liquid tube through the infusion tube, the upper liquid tube has upper and lower openings in the middle, the yarn body 1 enters from the lower opening of the upper liquid tube and passes through the upper opening, the TPU solution of the hollow glass microbeads suspended enters the upper liquid tube under the action of the digital liquid push pump, when the yarn body 1 passes through the upper liquid tube, the TPU solution of the hollow glass microbeads suspended is coated on the surface of the yarn body 1 to form a TPU skin layer 3, which is dried and solidified in a drying oven and then collected by a drum to obtain a yarn with a hollow glass microbead skin layer, and its front view and cross-sectional view are as shown in Figure 1-2 shown.

[0045] In the above steps, the drying and curing temperature in the drying oven is 150-220° C. and the time is 2-10 seconds.

[0046] The yarn with the hollow glass microbead skin layer provided by the utility model is described below in conjunction with specific embodiments.

[0047] Example 1

[0048] Please refer to Figure 1-Figure 2As shown, this embodiment provides a yarn with a hollow glass microbead skin layer, including a nylon yarn body 1 with a diameter of 50 μm, a TPU skin layer 3 with a thickness of 50 μm, hollow glass microbeads 2 with a diameter of 30 μm are embedded in the TPU skin layer 3, and the interior of the hollow glass microbeads 2 is filled with nitrogen.

[0049] The method for preparing the yarn having the hollow glass microbead skin layer comprises the following steps:

[0050] S1. Take 40 ml of ethanol and add it to a wide-mouth bottle, add 30 microliters of silane coupling agent to the wide-mouth bottle, and then shake it in a shaker at room temperature for 3 hours, then add 6 g of hollow glass microbeads 2 with a diameter of 30 μm, then shake it in a shaker at 60 degrees for 2 hours, take it out, dry it in a 60-degree electric drying oven until the ethanol in the bottle evaporates completely, then take out the hollow glass microbeads 2 in the bottle and dry it at 120 degrees for 6 hours. At this point, the hollow glass microbeads 2 are processed.

[0051] S2. Take a wide-mouth bottle, add 50 ml of the prepared 10% concentration TPU solution into it, and then add the treated hollow glass microspheres 2, the mass ratio of hollow glass microspheres 2 to TPU is 1:3, and after slow stirring for 12 hours, a TPU solution in which the hollow glass microspheres are suspended is obtained.

[0052] S3. The TPU solution of the hollow glass microbeads obtained in step S2 is connected to the digital liquid push pump through the infusion tube. The digital liquid push pump is connected to the upper liquid tube through the infusion tube. The upper liquid tube has upper and lower openings in the middle. The nylon yarn enters from the lower opening of the upper liquid tube and passes through the upper opening. The TPU solution of the hollow glass microbeads enters the upper liquid tube under the action of the digital liquid push pump. When the nylon yarn passes through the upper liquid tube, the TPU solution of the hollow glass microbeads is coated on the surface of the nylon yarn to form a TPU skin layer 3. After being dried and cured at 150°C for 2s in a drying oven, it is collected by a drum to obtain a yarn with a hollow glass microbead skin layer.

[0053] Example 2-3

[0054] Embodiments 2-3 respectively provide a yarn with a hollow glass microsphere skin layer. Compared with Embodiment 1, the only difference is that the amount of hollow glass microspheres 2 added is different. Other experimental parameters and conditions are basically the same as those in Embodiment 1 and will not be repeated here.

[0055] The thickness of the yarn cortex prepared by using hollow glass microspheres with different mass ratios is shown in Table 1. It can be seen from Table 1 that with the increase of the mass ratio of hollow glass microspheres 2, the thickness of the cortex of the prepared yarn increases.

[0056] Table 1 Thickness of the skin layer of the yarn with hollow glass microbead skin layer provided by Examples 1-3

[0057]

[0058]

[0059] Embodiment 4-5

[0060] Examples 4-5 respectively provide a yarn with a hollow glass microbead skin layer. Compared with Example 1, the only difference is that the concentration of the TPU solution is different. Other experimental parameters and conditions are basically the same as those in Example 1 and will not be repeated here.

[0061] The thickness of the yarn cortex prepared by using TPU solutions of different concentrations is shown in Table 2. It can be seen from Table 2 that with the increase of the concentration of TPU solution, the thickness of the cortex of the prepared yarn increases.

[0062] Table 2 Thickness of the cortex of the yarn with hollow glass microbead cortex prepared in Examples 4-5

[0063] project TPU solution concentration TPU skin thickness (μm) <![CDATA[Body density (kg / m 3 )]]> Example 1 10％ 50 1536.2310 Example 4 20％ 100 2744.8412 Example 5 30％ 150 3420.5664

[0064] The yarn with hollow glass microbead skin provided in Examples 1-5 was subjected to thermal insulation test, and the results are as follows: Figure 3-Figure 8 As shown in the figure, it can be seen that the thermal insulation effect of the original silk is poor, the thermal insulation effect of the yarn with a hollow glass microbead cortex is better, and the thermal insulation effect becomes better with the increase of the cortex thickness, indicating that the yarn with a hollow glass microbead cortex provided by the utility model has excellent thermal insulation effect.

[0065] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A yarn having a hollow glass microbead skin layer, characterized in that: The yarn comprises a yarn body and a TPU skin layer wrapped on the surface of the yarn body, the TPU skin layer is inlaid with hollow glass microbeads, the hollow glass microbeads are uniformly dispersed in the TPU skin layer, the thickness of the TPU skin layer is 50μm to 200μm, and the diameter of the hollow glass microbeads is 30μm to 160μm.

2. The yarn with hollow glass microbead skin layer according to claim 1, characterized in that: The yarn body is one of nylon, polyester, spandex, cotton yarn and silk.

3. The yarn with hollow glass microbead skin layer according to claim 1, characterized in that: The cross section of the yarn with the hollow glass microbead skin layer is circular.

4. The yarn with hollow glass microbead skin layer according to claim 2, characterized in that: The diameter of the yarn body is 50 μm to 1000 μm.

5. The yarn with hollow glass microbead skin layer according to claim 1, characterized in that: The hollow glass microspheres are made of silicon dioxide.

6. The yarn with hollow glass microbead skin layer according to claim 5, characterized in that: The hollow glass microspheres are hollow inside and filled with inert gas.

7. The yarn with hollow glass microbead skin layer according to claim 6, characterized in that: The inert gas is nitrogen or carbon dioxide.

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