Method for producing glass fiber

Abstract

To provide a glass fiber and method for producing the same.SOLUTION: The method for producing a glass fiber includes a covering process, a sintering process, a mixing process, and spinning process. The covering process is implemented by covering a tungsten compound onto surfaces of a plurality of inorganic particles to form a plurality of surface treated inorganic particles. The sintering process is implemented by sintering the surface treated inorganic particles in a nitrogen atmosphere having a temperature of between 400°C and 1,000°C. The mixing process is implemented by mixing the surface treated inorganic particles into a glass raw material that is in a molten state. The spinning process is implemented by spinning from the glass raw material comprising the surface treated inorganic particles to form a plurality of glass fibers.SELECTED DRAWING: Figure 1

Description

Technical Field

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

Background Art

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

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 problems, one of the technical means according to the present invention is that, based on the total weight of the surface-treated inorganic particles (hereinafter referred to as "surface-treated inorganic particles"), the content of the tungsten compound is from 0.01 wt% to 5 wt%, a coating step of coating the tungsten compound on the surfaces of a plurality of inorganic particles to form a plurality of 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 the fired plurality of surface-treated inorganic particles with a molten glass raw material, and a spinning step of spinning from the glass raw material containing the obtained plurality of surface-treated inorganic particles to form a plurality of glass fiber yarns.

[0005] Preferably, the tungsten compound is at least one selected from the group of materials consisting of tungsten hexachloride and ammonium metatungstate.

[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 diameter 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 0.1 wt% to 5 wt%.

[0009] Preferably, in the coating step, first, a tungsten 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 solution is dried to coat the tungsten compound on a plurality of inorganic particles.

[0010] Preferably, the nozzle aperture diameter of the sprayer is less than 0.2 μm.

[0011] Preferably, based on 100 wt% of the total weight of the glass raw material, the glass raw material contains 54 wt% to 63 wt% of silicon dioxide, 15 wt% to 24 wt% of aluminum oxide, 6 wt% to 13 wt% of magnesium oxide, 3.4 wt% to 14 wt% of calcium oxide, and 0.5 wt% to 9 wt% of boron oxide, and 0 wt% to 7 wt% of lanthanum oxide. Here, taking the total weight of the glass fiber yarn 100 as 100 wt%, the content of the surface-treated inorganic particles 1 is between 0.1 wt% and 5 wt%, and the content of the glass raw material 2 is between 95 wt% and 99.9 wt%.

[0012] Preferably, the glass fiber yarn has a maximum static friction coefficient of from 0.34 to 0.54.

[0013] 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 means of "coding process, firing process, mixing process and spinning process", "the content of tungsten compound is 0.01 wt% to 5 wt% based on the total weight of 100 wt% of each surface-treated inorganic particle", and "a plurality of surface-treated inorganic particles are dispersed in the glass raw material".

[0014] To better understand the features and technical content of the present invention, the following provides a detailed description of the present invention with reference to the accompanying drawings. However, the provided accompanying drawings are only for reference and explanation purposes and are not for limiting the scope of the claims of the present invention.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0016] The embodiments disclosed by the present invention in specific examples of the "glass fiber yarn and its manufacturing method" according to the present application will be described below. Those skilled in the art can understand the merits and effects of the present invention based on the disclosure 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 without departing from the spirit of the present invention based on various viewpoints or applications. Also, the drawings of the present invention are for simply and schematically explaining, and do not show actual dimensions. In the following embodiments, 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 can include any one or a combination of multiple relevant listed items according to the actual situation.

[0017] 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. Further, the term "or" used in this specification can appropriately include any one or a combination of the relevant listed items.

[0018] [Manufacturing Method of Glass Fiber Yarn] Referring to FIGS. 1 to 3, FIG. 1 is a flowchart of a manufacturing method of 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. The embodiment of the present invention provides a manufacturing method of glass fiber yarn, and the manufacturing method of glass fiber yarn includes a coding step S110, a firing step S120, a mixing step S130, and a spinning step S140.

[0019] In the coding step S110, a tungsten 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 particle 1 has 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 tungsten compound. With respect to 100 wt% of the total weight of each of the surface-treated inorganic particles 1, the content of the tungsten 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.

[0020] The tungsten compound can be at least one selected from the group of materials consisting of tungsten hexachloride and ammonium metatungstate. Tungsten has a body-centered cubic (BCC) crystal structure, realizing high capacity and high density.

[0021] The inorganic particles need to have the property of withstanding high temperatures, and are selected to avoid the inorganic particles melting or bursting during the firing step. 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.

[0022] In the coding step S110 in a specific embodiment, first, a tungsten compound is dissolved in a solvent to prepare a solution, the solution is put into a nebulizer, the solution is sprayed onto the inorganic particles through the nebulizer to stir the solution and the inorganic particles, and then the solution water is dried to coat the tungsten compound on the plurality of inorganic particles. The solvent may be, for example, water, ethanol, or isopropanol. Preferably, the nozzle pore diameter of the nebulizer is less than 0.2 μm.

[0023] 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 tungsten compound, which may affect the maximum static friction coefficient of the glass fiber yarn 100.

[0024] Furthermore, through the firing step S120, the surface-treated inorganic particles 1 perform rearrangement of the crystal lattice, and tungsten ions are inserted into the crystal lattice of the inorganic particles. In this way, the tungsten 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.

[0025] 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 may 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 has no limitation on the specific components contained in the glass raw material 2 and the content of each component.

[0026] In the spinning step S140, spinning is performed from the glass raw material 2 mixed with a plurality of the surface-treated inorganic particles 1 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%.

[0027] 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. Thereby, the glass fiber yarns 100 are not easily broken during the spinning process S140.

[0028] In other words, the manufacturing method of glass fiber yarns that add 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.

[0029] Furthermore, when the tungsten compound is directly added to the glass raw material 2, the tungsten 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 tungsten 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, whereby the surface-treated inorganic particles 1 are uniformly dispersed in the glass fiber yarns 100.

[0030] The glass fiber yarns 100 have a maximum static friction coefficient of 0.34 to 0.54.

[0031] [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.

[0032] Each of the surface-treated inorganic particles 1 contains inorganic particles and a tungsten 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 tungsten compound. The tungsten compound is at least one selected from the group of materials consisting of tungsten hexachloride and ammonium metatungstate, 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.

[0033] The particle size of the surface-treated inorganic particles 1 is from 0.01 μm to 50 μm. With respect to the total weight 100 wt% of the 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%.

[0034] The glass fiber yarn 100 has a maximum static friction coefficient between 0.34 and 0.54. More preferably, the glass fiber yarn 100 has a maximum static friction coefficient between 0.34 and 0.47.

Examples

[0035] [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.

[0036] In Comparative Example 1, no surface-treated inorganic particles were added. In the manufacturing methods of the glass fiber yarns of Examples 1 to 3, the content of the surface-treated inorganic particles was 0.02 wt%, 0.2 wt%, and 2 wt%, respectively, when the total weight of the glass fiber yarn was 100 wt%.

[0037] The maximum static friction coefficient, abrasion resistance, and thermal stability of the glass fiber yarns produced by the production methods of Comparative Example 1 and Examples 1 to 3 are shown in Table 1 below, and the test methods are as follows.

[0038] Test method for maximum static friction coefficient: Two test pieces with a thickness of 5 millimeters and composed of multiple glass fiber yarns were taken, and under a load condition of 200 grams, the maximum static friction coefficient of the test pieces was tested using a friction coefficient measuring instrument of model CFT-400.

[0039] Abrasion resistance test: The sample made of the glass fiber yarn was brought into contact with the grinding wheel of a grinding machine, and the abrasion resistance of the sample was observed and evaluated.

[0040] Thermal stability test: Using a thermomechanical analyzer (TMA model TMA400), the coefficient of thermal expansion of a sample made of glass fiber yarn was tested under the condition of temperature increase from room temperature to 250 degrees.

[0041] Modulus test of high-strength glass fiber: A sample with a length of 3 centimeters was placed on a resonance frequency and attenuation signal measuring instrument, the sample was struck to generate a resonance signal, the resonance signal was received by a microphone, and the modulus value was obtained through analysis using resonance frequency analysis software.

[0042] [Maximum static friction coefficient of the glass fiber yarns of Comparative Example 1 and Examples 1 to 3] [Table 1]

[0043] [Discussion of test results] As can be seen from Examples 1 to 3, by adding 0.02 wt% to 2 wt% of surface-treated inorganic particles, the glass fiber yarn has a maximum static friction coefficient between 0.34 and 0.47, an abrasion resistance between 1080 and 1460, 2.4×10 -6 / °C to 3.4×10 -6It can have a coefficient of thermal expansion between / ℃ and a high-strength glass elastic modulus between 82 GPa and 91 GPa. With a high-strength glass elastic modulus between 82 GPa and 91 GPa, it can meet the demand for a high-strength glass elastic modulus of 87 GPa or more.

[0044] [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 include "a coding process, a firing process, a mixing process, and a spinning process", "the content of the tungsten compound is 0.01 wt% to 5 wt% with respect to 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". By these technical means, the existing problem that the glass fiber yarn is easily broken during the spinning process can be effectively improved.

[0045] The content disclosed above is only a preferred and feasible embodiment of the present invention, and does not limit the scope of the claims of the present invention. Therefore, equivalent technical modifications made based on the content of the specification and the accompanying drawings of the present invention shall all be included in the scope of the claims of the present invention.

Explanation of Reference Numerals

[0046] 100: Glass fiber yarn 1: Surface-treated inorganic particle 11: Core layer 12: Shell layer 2: Glass raw material S110: Coding process S120: Firing process S130: Mixing process S140: Spinning process

Claims

1. A coating step of coating a plurality of inorganic particles with the tungsten compound so that the content of the tungsten compound is 0.01 wt% to 5 wt% with respect to 100 wt% of the total weight of the surface-treated inorganic particles to form 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 by the above.

2. The method for manufacturing a glass fiber yarn according to Claim 1, wherein the tungsten compound is at least one selected from the group of materials consisting of tungsten hexachloride and ammonium metatungstate.

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% with respect to 100 wt% of the total weight of the glass fiber yarn.

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

7. The method for manufacturing a glass fiber yarn according to Claim 6, wherein the nozzle pore diameter of the sprayer is less than 0.2 μm.

8. Based on 100 wt% of the total weight of the glass raw material The glass raw material contains 54 wt% to 63 wt% of silicon dioxide, 15 wt% to 24 wt% of aluminum oxide, 6 wt% to 13 wt% of magnesium oxide, 3.4 wt% to 14 wt% of calcium oxide, 0.5 wt% to 9 wt% of boron oxide, and 0 wt% to 7 wt% of lanthanum oxide, Taking the total weight of the glass fiber yarn 100 as 100 wt%, the content of the surface-treated inorganic particles is between 0.1 wt% and 5 wt%, and The content of the glass raw material is between 95 wt% and 99.9 wt%. The method for manufacturing a glass fiber yarn according to claim 1.

9. The method for manufacturing a glass fiber yarn according to claim 1, wherein the glass fiber yarn has a maximum static friction coefficient of 0.34 to 0.

54.

10. Manufactured by the method for manufacturing a glass fiber yarn according to claim 1, A glass fiber yarn characterized by this.

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