Glass fiber yarn and method for manufacturing the same

Abstract

To provide glass fiber yarn and a method for manufacturing the same.SOLUTION: A method for manufacturing glass fiber yarn comprises a coating step of coating a molybdenum compound on the surfaces of inorganic particles to form the surface-treated inorganic particles; a sintering step of sintering the surface-treated inorganic particles on a temperature condition of 400 to 1,000°C in a nitrogen gas atmosphere; a mixture step of mixing the surface-treated inorganic particles into a molten glass raw material; and a spinning step of spinning the molten glass raw material including the surface-treated inorganic particles to form glass fiber yarns.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to glass fiber yarns and a method for manufacturing the same, and more particularly to glass fiber yarns containing molybdenum compounds and a method for manufacturing the same.

Background Art

[0002] In existing methods for manufacturing glass fiber yarns, there is a problem that the glass fiber yarns are easily broken during the spinning process because the slipperiness of the glass fiber yarns is insufficient.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The technical problem to be solved by the present invention is to provide a glass fiber yarn and a method for manufacturing the same that compensate for the deficiencies of the existing technology and effectively improve the problem that the glass fiber yarns are easily broken during the spinning process.

Means for Solving the Problems

[0004] To solve the above technical problem, one of the technical means according to the present invention is a coating step of coating a molybdenum compound on the surfaces of a plurality of inorganic particles so that the content of the molybdenum compound is from 0.01 wt% to 5 wt% based on the total weight of the surface-treated inorganic particles to form a plurality of surface-treated inorganic particles, a firing step of firing the surface-treated inorganic particles at a temperature condition of from 400°C to 1000°C in an atmosphere of nitrogen gas, a mixing step of mixing the plurality of surface-treated inorganic particles with a molten glass raw material, and a spinning step of spinning from a glass raw material containing the plurality of surface-treated inorganic particles to form a plurality of glass fiber yarns, and to provide a method for manufacturing glass fiber yarns including these steps.

[0005] Preferably, the molybdenum compound is at least one selected from the group consisting of molybdenum trioxide, molybdenum tetroxide, molybdenum pentachloride, and molybdenum disulfide.

[0006] Preferably, the inorganic particles are at least one selected from the group of materials consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, and calcined kaolin.

[0007] Preferably, the particle size of the surface-treated inorganic particles is from 0.01 μm to 50 μm.

[0008] Preferably, based on 100 wt% of the total weight of the glass fiber yarn, the content of the surface-treated inorganic particles is from 0.01 wt% to 5 wt%.

[0009] Preferably, in the coating step, first, a molybdenum compound is dissolved in water to prepare a solution, then a plurality of inorganic particles are added to the solution, after stirring the solution and the inorganic particles, the water in the solution is dried to coat the molybdenum compound on the plurality of inorganic particles.

[0010] Preferably, in the coating step, first, a molybdenum compound is dissolved in water to prepare a solution, the solution is put into a sprayer, the solution is sprayed onto the inorganic particles through the sprayer, after stirring the solution and the inorganic particles, the water in the solution is dried to coat the molybdenum compound on the plurality of inorganic particles.

[0011] Preferably, the nozzle pore diameter of the sprayer is less than 0.2 μm.

[0012] Preferably, the glass fiber yarn has a maximum static friction coefficient of from 0.49 to 0.52.

[0013] To solve the above technical problems, another technical means according to the present invention is to provide a glass fiber yarn containing glass raw materials and a plurality of surface-treated inorganic particles. Here, each surface-treated inorganic particle includes an inorganic particle and a molybdenum compound coated on the inorganic particle. With respect to 100 wt% of the total weight of each surface-treated inorganic particle, the content of the molybdenum compound is from 0.01 wt% to 5 wt%. The molybdenum compound is at least one selected from the group of materials consisting of molybdenum trioxide, molybdenum tetraoxide, molybdenum pentachloride, and molybdenum disulfide, and the inorganic particle is at least one selected from the group of materials consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, and calcined kaolin.

[0014] Preferably, the particle size of the surface-treated inorganic particles is from 0.01 μm to 50 μm, and with respect to 100 wt% of the total weight of the glass fiber yarn, the content of the surface-treated inorganic particles is from 0.01 wt% to 5 wt%.

[0015] Preferably, the glass fiber yarn has a maximum static friction coefficient of from 0.49 to 0.52.

[0016] One beneficial effect of the present invention is that the glass fiber yarn and its manufacturing method provided by the present invention can effectively improve the existing problem that the glass fiber yarn is easily broken during the spinning process by technical means of "coating process, firing process, mixing process, and spinning process", "the content of the molybdenum compound is from 0.01 wt% to 5 wt% with respect to 100 wt% of the total weight of each surface-treated inorganic particle", and "a plurality of surface-treated inorganic particles are dispersed in the glass raw material".

[0017] To better understand the features and technical content of the present invention, the following detailed description of the present invention and the accompanying drawings are referred to. However, the provided accompanying drawings are only for reference and explanation, and are not for limiting the scope of the claims of the present invention.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

[0019] The embodiments disclosed by the present invention will be described by specific examples of the "glass fiber yarn and its manufacturing method" according to the present application as follows. Those skilled in the art can understand the merits and effects of the present invention from the disclosed content of this specification. The present invention can be implemented or applied by other different embodiments. Each detail in this specification can also be equivalently modified and changed based on various viewpoints or applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are for simple and schematic illustration and do not show actual dimensions. In the following embodiments, the technical matters related to the present invention will be further described, but the disclosed content does not limit the present invention. Also, the term "or" used in this specification may include any one or a combination of a plurality of related listed items according to the actual situation.

[0020] Throughout this specification, terms such as "first", "second", "third", etc. may be used to describe various components and signals, but it should be understood that these components and signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component or one signal from another signal. Furthermore, the term "or" used in this specification can appropriately include any one or a combination of the related listed items.

[0021] [Method for Manufacturing Glass Fiber Yarn] Referring to FIGS. 1 to 3, FIG. 1 is a flowchart of a method for manufacturing glass fiber yarn according to an embodiment of the present invention, FIG. 2 is a schematic diagram of glass fiber yarn according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of surface-treated inorganic particles according to an embodiment of the present invention. An embodiment of the present invention provides a method for manufacturing glass fiber yarn, and the method for manufacturing glass fiber yarn includes a coating step S110, a firing step S120, a mixing step S130, and a spinning step S140.

[0022] In the coating step S110, a molybdenum compound is coated on the surfaces of a plurality of inorganic particles to form a plurality of surface-treated inorganic particles 1. The surface-treated inorganic particles 1 have a core-shell structure, and the core-shell structure includes a core layer 11 formed by the inorganic particles and a shell layer 12 formed by the molybdenum compound. With respect to the total weight 100 wt% of each of the surface-treated inorganic particles 1, the content of the molybdenum compound is from 0.01 wt% to 5 wt%, and the content of the inorganic particles is from 95 wt% to 99.9 wt%. The particle size of the surface-treated inorganic particles is from 0.01 μm to 50 μm. Preferably, the particle size of the surface-treated inorganic particles is from 0.1 μm to 30 μm.

[0023] The molybdenum compound can be at least one selected from the group of materials consisting of molybdenum trioxide, molybdenum tetraoxide, molybdenum pentachloride, and molybdenum disulfide. Preferably, the molybdenum compound is molybdenum disulfide, and the crystal structure of molybdenum disulfide is similar to the crystal structure of graphene, including a plurality of layered structures that can slide relative to each other, whereby the finally manufactured glass fiber yarn can have a better maximum static friction coefficient. However, the molybdenum compound in the present invention is not limited to molybdenum disulfide.

[0024] The inorganic particles need to have the property of withstanding high temperatures, and it is necessary to avoid the inorganic particles from melting or bursting during the firing process. Preferably, the inorganic particles are at least one selected from the group of materials consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, and fired kaolin.

[0025] In the coating step S110 in a specific embodiment, first, a molybdenum compound is dissolved in water to prepare a solution. Then, a plurality of the inorganic particles are added to the solution, and the solution and the inorganic particles are stirred. Next, the water in the solution is dried to coat the molybdenum compound on the plurality of inorganic particles. In this embodiment, based on 100 wt% of the total weight of the solution, the content of the inorganic particles can be from 15 wt% to 25 wt%, and preferably, the content of the inorganic particles is about 20 wt%. More specifically, after adding the inorganic particles to the solution, the solution and the inorganic particles are stirred at about 80°C for 2 to 4 hours. After filtering the solution and the inorganic particles, they are dried at about 120°C for 2 to 4 hours, and then stirred in a three-dimensional mixer for 2 to 4 hours to obtain the surface-treated inorganic particles 1.

[0026] Also, in the coating step S110 in another embodiment, first, a molybdenum compound is dissolved in water to prepare a solution. The solution is put into a sprayer, and the solution is sprayed onto the inorganic particles through the sprayer to stir the solution and the inorganic particles. Next, the water in the solution is dried to coat the molybdenum compound on the plurality of inorganic particles. Preferably, the nozzle aperture diameter of the sprayer is less than 0.2 μm. Furthermore, the methods of stirring, filtering, and drying the solution and the inorganic particles in this embodiment can be the same as those in the previous embodiment.

[0027] In the firing step S120, the surface-treated inorganic particles 1 are fired at a temperature of 400°C to 1000°C in an atmosphere of nitrogen gas. The atmosphere of nitrogen gas here refers to an environment of pure nitrogen gas. If the firing step S120 is not carried out in an atmosphere of nitrogen gas, oxygen in the environment may oxidize the molybdenum compound, which may affect the maximum static friction coefficient of the glass fiber yarn 100.

[0028] Furthermore, through the firing step S120, the surface-treated inorganic particles 1 perform rearrangement of the crystal lattice, and molybdenum ions are inserted into the crystal lattice of the inorganic particles. In this way, the molybdenum ions do not easily fall off from the surface of the inorganic particles, and the properties of the glass fiber yarn are less likely to be affected.

[0029] In the mixing step S130, a plurality of the surface-treated inorganic particles 1 are mixed into the molten glass raw material 2. For example, with respect to the total weight 100wt% of the glass raw material, the glass raw material 2 can contain 54wt% to 63wt% of silicon dioxide, 15wt% to 24wt% of aluminum oxide, 6wt% to 13wt% of magnesium oxide, 3.4wt% to 14wt% of calcium oxide, 0.5wt% to 9wt% of boron oxide, and 0wt% to 7wt% of lanthanum oxide. However, the present invention is not limited to the specific components contained in the glass raw material 2 and the content of each component.

[0030] In the spinning step S140, spinning is performed from the glass raw material 2 in which a plurality of the surface-treated inorganic particles 1 are mixed to form a plurality of the glass fiber yarns 100. With respect to the total weight 100wt% of each of the glass fiber yarns 100, the content of the surface-treated inorganic particles 1 is 0.1wt% to 5wt%, and the content of the glass raw material 2 is 95wt% to 99.9wt%.

[0031] It should be noted that after the spinning process S140, the plurality of glass fiber yarns 100 have excellent slipperiness, and it is not necessary to add any lubricant to the surface of the plurality of glass fiber yarns 100 after the spinning process S140. Further, in the present invention, the surface-treated inorganic particles 1 are uniformly dispersed in the glass fiber yarns 100 and are not only located on the surface of the glass fiber yarns 100. Thus, the glass fiber yarns 100 are not easily broken during the spinning process S140.

[0032] In other words, the manufacturing method of glass fiber yarns that add a lubricant after the spinning process and the glass fiber yarns in which the lubricant exists only on the surface are not appropriate compared with the manufacturing method of the glass fiber yarns and the glass fiber yarns in the present invention. Further, when the lubricant is added only to the surface of the glass fiber yarns, the slipperiness inside the glass fiber yarns is not improved, so the glass fiber yarns are easily broken during the spinning process.

[0033] Furthermore, when the molybdenum compound is directly added to the glass raw material 2, the molybdenum compound is not uniformly dispersed in the glass fiber yarns 100. Therefore, in the manufacturing method of the glass fiber yarns of the present invention, first, the molybdenum compound is coated on the surface of the inorganic particles to form the surface-treated inorganic particles 1, and then the surface-treated inorganic particles 1 are dispersed in the glass raw material 2, so that the surface-treated inorganic particles 1 are uniformly dispersed in the glass fiber yarns 100.

[0034] The glass fiber yarns 100 have a dielectric constant of 2 to 7 and also have a maximum static friction coefficient of 0.49 to 0.52.

[0035] [Glass fiber yarns] The present invention provides the glass fiber yarns 100, which are manufactured by the manufacturing method of the glass fiber yarns described above, but are not limited thereto. The glass fiber yarns 100 include the glass raw material 2 and a plurality of surface-treated inorganic particles 1 dispersed in the glass raw material 2.

[0036] Each of the surface-treated inorganic particles 1 includes inorganic particles and a molybdenum compound coated on the inorganic particles. The surface-treated inorganic particles 1 have a core-shell structure, and the core-shell structure includes a core layer 11 formed by the inorganic particles and a shell layer 12 formed by the molybdenum compound. The molybdenum compound is at least one selected from the group of materials consisting of molybdenum trioxide, molybdenum tetraoxide, molybdenum pentachloride, and molybdenum disulfide, and the inorganic particles are at least one selected from the group of materials consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, and calcined kaolin.

[0037] The particle diameter of the surface-treated inorganic particles 1 is from 0.01 μm to 50 μm. With respect to the total weight 100 wt% of each glass fiber yarn 100, the content of the surface-treated inorganic particles 1 is from 0.1 wt% to 5 wt%, and the content of the glass raw material 2 is from 95 wt% to 99.9 wt%.

[0038] The glass fiber yarn 100 has a dielectric constant of 2 to 7 and a maximum static friction coefficient of 0.49 to 0.52.

Examples

[0039] [Experimental data test] Hereinafter, with reference to Examples 1 to 3 and Comparative Example 1, the content of the present invention will be described in detail. However, the following examples are for helping the understanding of the present invention, and the scope of the present invention is not limited to these examples.

[0040] In Comparative Example 1, only inorganic particles were added, and the surface of the inorganic particles was not coated with a molybdenum compound. In Examples 1 to 3, molybdenum trioxide, molybdenum pentachloride, and molybdenum disulfide were respectively coated on the surface of the inorganic particles to form surface-treated inorganic particles. In the method for manufacturing the glass fiber yarn of Comparative Example 1, the content of the inorganic particles was 0.2 wt% with respect to 100 wt% of the total weight of the glass fiber yarn. In the methods for manufacturing the glass fiber yarns of Examples 1 to 3, the content of the surface-treated inorganic particles was 0.2 wt% with respect to 100 wt% of the total weight of the glass fiber yarn.

[0041] The maximum static friction coefficients of the glass fiber yarns manufactured by the methods for manufacturing glass fiber yarns according to Comparative Example 1 and Examples 1 to 3 are shown in Table 1 below, and the test method for the maximum static friction coefficient is as follows.

[0042] Test method for the maximum static friction coefficient of the glass fiber yarn: Two test pieces each composed of a plurality of glass fiber yarns with a thickness of 5 millimeters were taken, and the maximum static friction coefficient of the test pieces was tested using a friction coefficient measuring instrument of model number CFT-400 under a load condition of 200 grams.

[0043] [Table 1]

[0044] [Discussion of Test Results] In Comparative Example 1, since no molybdenum compound was added, the maximum static friction coefficient of the glass fiber yarn was relatively high. In Examples 1 to 3, molybdenum trioxide, molybdenum pentachloride, and molybdenum disulfide were respectively added as molybdenum compounds, and the glass fiber yarns had an ideal maximum static friction coefficient (from 0.49 to 0.52).

[0045] [Beneficial Effects According to Embodiments of the Present Invention] One beneficial effect of the present invention is that the glass fiber yarn and its manufacturing method provided by the present invention can effectively improve the existing problem that the glass fiber yarn is easily broken (ruptured) during the spinning process by the technical means of "including a coating process, a firing process, a mixing process, and a spinning process", "the content of the molybdenum compound is 0.01 wt% to 5 wt% based on the total weight of 100 wt% of each of the surface-treated inorganic particles", and "a plurality of surface-treated inorganic particles are dispersed in the glass raw material".

[0046] The content disclosed above is only a preferred feasible embodiment of the present invention, and does not limit the scope of the claims of the present invention. Therefore, all equivalent technical modifications made based on the content of the specification and the attached drawings of the present invention shall be included in the scope of the claims of the present invention.

Explanation of Reference Numerals

[0047] 100: Glass fiber yarn 1: Surface-treated inorganic particle 11: Core layer 12: Shell layer 2: Glass raw material S110: Coating process S120: Firing process S130: Mixing process S140: Spinning process

Claims

1. A coating step of coating a plurality of inorganic particles with the molybdenum compound so that the content of the molybdenum compound is 0.01 wt% to 5 wt% based on the total weight of the surface-treated inorganic particles, thereby forming a plurality of the surface-treated inorganic particles; A firing step of firing the surface-treated inorganic particles under temperature conditions of 400°C to 1000°C in an atmosphere of nitrogen gas; A mixing step of mixing a plurality of the surface-treated inorganic particles with a molten glass raw material; A spinning step of spinning the glass raw material containing a plurality of the surface-treated inorganic particles to form a plurality of glass fiber yarns; comprising A method for manufacturing a glass fiber yarn, characterized in that.

2. The method for manufacturing a glass fiber yarn according to claim 1, wherein the molybdenum compound is at least one selected from the group of materials consisting of molybdenum trioxide, molybdenum tetraoxide, molybdenum pentachloride, and molybdenum disulfide.

3. The method for manufacturing a glass fiber yarn according to claim 1, wherein the inorganic particles are at least one selected from the group of materials consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, and calcined kaolin.

4. The method for manufacturing a glass fiber yarn according to claim 1, wherein the particle diameter of the surface-treated inorganic particles is 0.01 μm to 50 μm.

5. The method for manufacturing a glass fiber yarn according to claim 1, wherein the content of the surface-treated inorganic particles is 0.1 wt% to 5 wt% based on 100 wt% of the total weight of the glass fiber yarn.

6. In the coating step, first, the molybdenum compound is dissolved in water to prepare a solution, then a plurality of the inorganic particles are put into the solution and the solution and the inorganic particles are stirred, and then the water in the solution is dried to coat the molybdenum compound on a plurality of the inorganic particles. The method for manufacturing a glass fiber yarn according to claim 1.

7. In the coating step, first, the molybdenum compound is dissolved in water to prepare a solution, the solution is put into the sprayer, the solution is sprayed onto the inorganic particles through the sprayer and the solution and the inorganic particles are stirred, and then the water in the solution is dried to coat the molybdenum compound on a plurality of the inorganic particles. The method for manufacturing a glass fiber yarn according to claim 1.

8. The method for manufacturing a glass fiber yarn according to claim 7, wherein the nozzle pore diameter of the sprayer is less than 0.2 μm.

9. The method for manufacturing the glass fiber yarn according to claim 1, wherein the glass fiber yarn has a maximum static friction coefficient of 0.49 to 0.

52.

10. A glass fiber yarn containing a glass raw material and a plurality of surface-treated inorganic particles, each of the surface-treated inorganic particles contains an inorganic particle and a molybdenum compound coated on the inorganic particle, wherein, based on 100 wt% of the total weight of the surface-treated inorganic particles, the content of the molybdenum compound is 0.01 wt% to 5 wt%, the molybdenum compound is at least one selected from the group consisting of molybdenum trioxide, molybdenum tetraoxide, molybdenum pentachloride and molybdenum disulfide, and the inorganic particle is at least one selected from the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide and calcined kaolin, a glass fiber yarn characterized by this.

11. The glass fiber yarn according to claim 10, wherein the particle size of the surface-treated inorganic particles is 0.01 μm to 50 μm, and based on 100 wt% of the total weight of the glass fiber yarn, the content of the surface-treated inorganic particles is 0.1 wt% to 5 wt%.

12. The glass fiber yarn according to claim 10, wherein the glass fiber yarn has a maximum static friction coefficient of 0.49 to 0.52.

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