Glass fiber yarn and method for manufacturing the same

Abstract

This invention provides glass fiber yarn and a method for producing the same. [Solution] The method for producing the glass fiber yarn includes a coating step, a sintering step, a mixing step, and a drawing step. In the coating step, zirconium oxide powder is coated onto the surface of a plurality of inorganic particles to form a plurality of modified inorganic particles. In the sintering step, the modified inorganic particles are sintered in a nitrogen atmosphere under temperature conditions of 400°C to 1000°C. In the mixing step, the sintered plurality of modified inorganic particles are mixed into a molten glass raw material. In the drawing step, glass fiber yarn is formed by drawing the glass raw material mixed with the plurality of modified inorganic particles.

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 zirconium oxide and a method for manufacturing the same.

Background Art

[0002] Glass fiber yarns manufactured by conventional methods for manufacturing glass fiber yarns have had problems such as insufficient thermal stability.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The technical problem to be solved by the present invention is that glass fiber yarns manufactured by conventional methods for manufacturing glass fiber yarns tend to have insufficient thermal stability.

[0004] Therefore, the present invention provides a glass fiber yarn and a method for manufacturing the same that effectively improve the problems of the prior art such as insufficient thermal stability.

Means for Solving the Problems

[0005] To solve the above technical problems, one of the technical means adopted by the present invention is to provide a method for manufacturing glass fiber yarns. The method for manufacturing the glass fiber yarns includes a coating step of coating zirconium oxide powder on the surfaces of a plurality of inorganic particles to form a plurality of modified inorganic particles, a sintering step of sintering the modified inorganic particles under a nitrogen atmosphere and at a temperature condition of 4***℃ to 1000℃, a mixing step of mixing the sintered plurality of modified inorganic particles with a molten glass raw material, and a drawing step of forming glass fiber yarns by drawing the glass raw material mixed with the plurality of modified inorganic particles. In the coating step, taking the total weight of each of the modified inorganic particles as 100 wt%, the content of the zirconium oxide powder is 0.01 wt% to 5 wt%, and the content of the inorganic particles is 95 wt% to ***.99 wt%.

[0006] Note: There seems to be some formatting or content issues in the original text where the temperature range in the manufacturing method description has some numbers missing. The translation is done as accurately as possible based on the provided text.Preferably, the inorganic particles are selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica.

[0007] Preferably, the average particle size of the modified inorganic particles is 0.01 μm to 50 μm.

[0008] Preferably, with the total weight of the glass fiber yarn being 100 wt%, the content of the modified inorganic particles is 0.1 wt% to 5 wt%, and the content of the glass raw material is 95 wt% to 99.9 wt%.

[0009] Preferably, in the coating step, the zirconium oxide powder is dispersed in water to form a solution, and the solution is sprayed onto a plurality of inorganic particles to coat the surface of the plurality of inorganic particles with the zirconium oxide powder, thereby forming a plurality of modified inorganic particles.

[0010] Preferably, in the coating step, the zirconium compound is dissolved in water and the inorganic particles are added to the water so that the zirconium compound is formed on the surface of the plurality of inorganic particles. Then, the plurality of inorganic particles and the zirconium compound are heated at a heating temperature of 100°C to 140°C so that the zirconium compound reacts to become the zirconium oxide powder, coating the surface of the plurality of inorganic particles and forming the plurality of modified inorganic particles.

[0011] Preferably, the zirconium compound is selected from at least one of the group consisting of zirconium oxychloride, zirconium carbonate, zirconium hydroxide, zirconium nitrate, sodium zirconate, and zirconium silicate.

[0012] Preferably, with a total weight of 100 wt%, the glass raw material comprises 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide.

[0013] Preferably, the thermal expansion coefficient of the glass fiber yarn is 2.88 PPM / °C to 3.34 PPM / °C.

[0014] To solve the above technical problems, another technical means employed by the present invention is to provide glass fiber yarn. The glass fiber yarn comprises a glass raw material and a plurality of modified inorganic particles dispersed in the glass raw material, each of the modified inorganic particles comprising an inorganic particle and zirconium oxide powder coated on the inorganic particle, with the total weight of each of the modified inorganic particles being 100 wt%, the zirconium oxide powder content being 0.01 wt% to 5 wt%, and the inorganic particle content being 95 wt% to 99.99 wt%, and the inorganic particles being selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica.

[0015] Preferably, the average particle size of the modified inorganic particles is 0.01 μm to 50 μm.

[0016] Preferably, with the total weight of the glass fiber yarn being 100 wt%, the content of the modified inorganic particles is 0.1 wt% to 5 wt%, and the content of the glass raw material is 95 wt% to 99.9 wt%.

[0017] Preferably, with a total weight of 100 wt%, the glass raw material comprises 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide.

[0018] Preferably, the thermal expansion coefficient of the glass fiber yarn is 2.88 PPM / °C to 3.34 PPM / °C. [Effects of the Invention]

[0019] One of the advantageous effects of the present invention is that the glass fiber yarn and its manufacturing method according to the present invention effectively improve the problem of insufficient thermal stability of glass fiber yarns manufactured by conventional glass fiber yarn manufacturing methods, due to technical features such as "coating step, sintering step, mixing step, and drawing step," "the zirconium oxide powder content is 0.01 wt% to 5 wt% with a total weight of each modified inorganic particle of 100 wt%, and the inorganic particle content is 95 wt% to 99.99 wt%," and "multiple modified inorganic particles are dispersed in the glass raw material." [Brief explanation of the drawing]

[0020] [Figure 1] This is a flowchart of a method for producing glass fiber yarn according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a glass fiber yarn according to an embodiment of the present invention. [Figure 3] This is a schematic diagram of modified inorganic particles according to an embodiment of the present invention. [Modes for carrying out the invention]

[0021] To further understand the features and technical details of this invention, please refer to the following detailed description of the invention and the accompanying drawings. However, the accompanying drawings provided are for reference and illustrative purposes only and do not limit the scope of the claims of this invention.

[0022] The following describes the implementation of the "glass fiber yarn and its manufacturing method" according to the present invention by specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention based on the content disclosed in this specification. The present invention can be implemented or applied by other different specific embodiments, and for each detail in this specification, various modifications and changes can be made based on different viewpoints and uses without departing from the concept of the present invention. It is pre-explained that the attached drawings of the present invention are simple schematic descriptions and are not drawn based on actual sizes.

[0023] Based on the following embodiments, the technical content of the present invention will be described in more detail, but the protection scope of the present invention is not limited by the disclosed content. It should be understood that in this specification, terms such as "first", "second", "third", etc. may be used to describe various elements or signals, but these elements or signals are not limited by these terms. These terms are mainly used to distinguish one element from another element or one signal from another signal. Also, the term "or" used in this specification may include any one or a combination of multiple items listed in relation to the actual situation.

[0024] [Manufacturing Method of Glass Fiber Yarn] As shown in FIGS. 1 to 3, FIG. 1 is a flowchart of the manufacturing method of the glass fiber yarn according to an embodiment of the present invention, FIG. 2 is a schematic diagram of the glass fiber yarn according to an embodiment of the present invention, and FIG. 3 is a schematic diagram of the modified inorganic particles according to an embodiment of the present invention. The embodiment of the present invention provides a manufacturing method of glass fiber yarn. The manufacturing method of the glass fiber yarn includes a coating step S110, a sintering step S120, a mixing step S130, and a drawing step S140. Of course, the manufacturing method of the glass fiber yarn may include other steps as needed, but the present invention is not limited thereto.

[0025] In the coating step S110, a plurality of modified inorganic particles 1 are formed by coating the surface of a plurality of inorganic particles with zirconium oxide powder. The modified inorganic particles 1 have a core-shell structure, and the core-shell structure includes a core layer 11 formed of the inorganic particles and a shell layer 12 formed of the zirconium oxide powder. Assuming the total weight of each modified inorganic particle 1 is 100 wt%, the zirconium oxide powder content is 0.01 wt% to 5 wt%, and the inorganic particle content is 95 wt% to 99.99 wt%. The average particle diameter of the modified inorganic particles 1 is 0.01 μm to 50 μm, but the present invention is not limited thereto.

[0026] It should be noted that the inorganic particles must possess high-temperature resistance properties to avoid melting or rupture during the sintering process. Preferably, the inorganic particles are selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica.

[0027] In the coating step S110 of one embodiment, the zirconium oxide powder is dispersed in water to form a solution, and the solution is sprayed onto a plurality of inorganic particles to coat the surface of the plurality of inorganic particles with the zirconium oxide powder, thereby forming a plurality of modified inorganic particles 1. In this embodiment, for example, the solution is placed in a spray bottle, the solution is sprayed onto the inorganic particles through the spray bottle, the solution and the inorganic particles are stirred, and then the water is dried to coat the plurality of inorganic particles with the zirconium oxide powder.

[0028] In the coating step S110 of another embodiment, the zirconium compound is dissolved in water and the inorganic particles are added to the water so that the zirconium compound is formed on the surface of the plurality of inorganic particles. Then, the plurality of inorganic particles and the zirconium compound are heated at a heating temperature of 100°C to 140°C so that the zirconium compound reacts to become the zirconium oxide powder, coating the surface of the plurality of inorganic particles to form the plurality of modified inorganic particles 1. The zirconium compound may be selected from at least one of the group consisting of zirconium oxychloride, zirconium carbonate, zirconium hydroxide, zirconium nitrate, sodium zirconate, and zirconium silicate, but the present invention is not limited thereto.

[0029] In the sintering step S120, the modified inorganic particles 1 are sintered under a nitrogen atmosphere and a temperature of 400°C to 1000°C. The nitrogen atmosphere refers to a pure nitrogen environment, and sintering the modified inorganic particles 1 in a nitrogen atmosphere reduces the generation of by-products. In the sintering step S120, the modified inorganic particles 1 undergo crystal lattice rearrangement, and zirconium oxide is inserted into the crystal lattice of the inorganic particles. As a result, zirconium oxide is less likely to detach from the surface of the inorganic particles.

[0030] In the mixing step S130, a plurality of sintered modified inorganic particles 1 are mixed with the molten glass raw material 2. In this embodiment, the total weight of the glass raw material 2 is 100 wt%, and the glass raw material 2 may contain 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide, but the present invention is not limited thereto. The alkali metal oxide is selected from at least one of the group consisting of lithium oxide, sodium oxide, potassium oxide, rubidium oxide, and cesium oxide.

[0031] In the drawing process S140, glass fiber yarn 100 is formed by drawing from the glass raw material 2, which is a mixture of a plurality of modified inorganic particles 1. In this embodiment, the total weight of each glass fiber yarn 100 is 100 wt%, the content of the modified inorganic particles 1 is 0.1 wt% to 5 wt%, and the content of the glass raw material 2 is 95 wt% to 99.9 wt%, but the present invention is not limited thereto.

[0032] Of particular note is that, in the method for manufacturing the glass fiber yarn, the zirconium oxide powder is first coated onto the surface of a plurality of inorganic particles to form a plurality of modified inorganic particles 1, and the zirconium oxide powder can be uniformly dispersed in the glass raw material 2 by mixing the plurality of modified inorganic particles 1 with the glass raw material 2. As a result, the glass fiber yarn 100 has relatively high thermal stability, and the thermal expansion coefficient of the glass fiber yarn 100 is 2.88 PPM / ℃ to 3.34 PPM / ℃.

[0033] [Glass fiber yarn] In embodiments of the present invention, a glass fiber yarn 100 is provided. The glass fiber yarn 100 is obtained by carrying out the glass fiber yarn manufacturing method described above, but the present invention is not limited thereto.

[0034] The glass fiber yarn 100 comprises a glass raw material 2 and a plurality of modified inorganic particles 1 dispersed in the glass raw material 2. Each of the modified inorganic particles 1 comprises an inorganic particle and zirconium oxide powder coated on the inorganic particle. Assuming the total weight of each of the modified inorganic particles 1 is 100 wt%, the zirconium oxide powder content is 0.01 wt% to 5 wt%, and the inorganic particle content is 95 wt% to 99.99 wt%.

[0035] The inorganic particles are selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica. The average particle size of the modified inorganic particles 1 may be 0.01 μm to 50 μm, but the present invention is not limited thereto.

[0036] Assuming the total weight of each glass fiber yarn 100 is 100 wt%, the content of the modified inorganic particles 1 is 0.01 wt% to 5 wt%, and the content of the glass raw material 2 is 95 wt% to 99.99 wt%, but the present invention is not limited thereto.

[0037] Assuming the total weight of the glass raw material 2 is 100 wt%, the glass raw material 2 may contain 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide, but the present invention is not limited thereto.

[0038] Notably, zirconium oxide has a high melting point and excellent thermal stability, which allows it to maintain structural stability even in high-temperature environments, making it less prone to expansion and deformation. Furthermore, zirconia oxide can absorb heat by converting between different crystalline phases at different temperatures. As a result, the thermal expansion coefficient of the glass fiber yarn may be between 2.88 PPM / °C and 3.34 PPM / °C.

[0039] [Measurement of experimental data] The present invention will be described in detail below with reference to Examples 1 to 10 and Comparative Example 1. However, these examples are merely means to understand the present invention, and the present invention is not limited thereto.

[0040] In Comparative Example 1, no modified inorganic particles were added. In the glass fiber yarn manufacturing methods of Examples 1 to 5, with the total weight of the glass fiber yarn being 100 wt%, the content of the modified inorganic particles was 0.01 wt%, 0.05 wt%, 0.1 wt%, 0.5 wt%, and 1 wt%, respectively, and the content of the glass raw material was 99.99 wt%, 99.95 wt%, 99.9 wt%, 99.5 wt%, and 99 wt%, respectively. In the glass fiber yarn manufacturing methods of Examples 6 to 10, zirconium silicate, zirconium oxychloride, zirconium carbonate, zirconium hydroxide, and zirconium nitrate were used as zirconium compounds. In the glass fiber yarn manufacturing methods of Examples 6 to 10, with the total weight of the glass fiber yarn being 100 wt%, the content of the modified inorganic particles was 0.1 wt%, and the content of the glass raw material was 99.9 wt%.

[0041] The coefficient of thermal expansion was measured using a thermomechanical analyzer (TMA) (manufacturer: TA instrument) in accordance with the ASTM E831 standard.

[0042] JPEG2026109479000002.jpg25166

[0043] JPEG2026109479000003.jpg30159

[0044] [Review of measurement results] As can be seen from Comparative Example 1 and Examples 1-5, the glass fiber yarn in Comparative Example 1 did not have modified inorganic particles added, and the thermal expansion coefficient of the glass fiber yarn was relatively high. As can be seen from Comparative Example 1 and Examples 6-10, zirconium silicate, zirconium oxychloride, zirconium carbonate, zirconium hydroxide, and zirconium nitrate were used as zirconium compounds, and the thermal expansion coefficient of the glass fiber yarn in Examples 6-10 was relatively lower than that of the glass fiber yarn in Comparative Example 1.

[0045] [Advantageous effects of the embodiment] One of the advantageous effects of the present invention is that the glass fiber yarn and its manufacturing method according to the present invention effectively improve the problem of insufficient thermal stability of glass fiber yarns manufactured by conventional glass fiber yarn manufacturing methods, due to technical features such as "coating step, sintering step, mixing step, and drawing step," "the zirconium oxide powder content is 0.01 wt% to 5 wt% with a total weight of each modified inorganic particle of 100 wt%, and the inorganic particle content is 95 wt% to 99.99 wt%," and "multiple modified inorganic particles are dispersed in the glass raw material."

[0046] The information disclosed above represents only preferred and implementable embodiments of the present invention, and the claims of the present invention are not limited thereto. Therefore, any equivalent technical modifications made using the description and drawings of the present invention are all included within the scope of the claims of the present invention. [Explanation of Symbols]

[0047] 100...glass fiber yarn 1...Modified inorganic particles 11...Core Layer 12... Shell layer 2...Glass raw materials S110...Coating process S120...Sintering process S130...Mixing process S140...Drawing process

Claims

1. A coating step involves coating the surface of multiple inorganic particles with zirconium oxide powder to form multiple modified inorganic particles. A sintering step in which the modified inorganic particles are sintered under nitrogen atmosphere and temperature conditions of 400°C to 1000°C, A mixing step involves mixing a plurality of sintered modified inorganic particles with a molten glass raw material. A method for producing glass fiber yarn, comprising a drawing step of forming glass fiber yarn by drawing from the glass raw material which is a mixture of a plurality of the modified inorganic particles, A method for producing glass fiber yarn, characterized in that, in the coating step, the total weight of each modified inorganic particle is 100 wt%, the zirconium oxide powder content is 0.01 wt% to 5 wt%, and the inorganic particle content is 95 wt% to 99.99 wt%.

2. The method for producing glass fiber yarn according to claim 1, wherein the inorganic particles are selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica.

3. The method for producing glass fiber yarn according to claim 1, wherein the average particle size of the modified inorganic particles is 0.01 μm to 50 μm.

4. The method for producing glass fiber yarn according to claim 1, wherein the total weight of the glass fiber yarn is 100 wt%, the content of the modified inorganic particles is 0.1 wt% to 5 wt%, and the content of the glass raw material is 95 wt% to 99.9 wt%.

5. The method for producing glass fiber yarn according to claim 1, wherein in the coating step, the zirconium oxide powder is dispersed in water to form a solution, and the solution is sprayed onto a plurality of inorganic particles to coat the surface of the plurality of inorganic particles with the zirconium oxide powder and form a plurality of modified inorganic particles.

6. The method for producing glass fiber yarn according to claim 1, wherein in the coating step, the zirconium compound is dissolved in water and the inorganic particles are added to the water so that the zirconium compound is formed on the surface of a plurality of the inorganic particles, and thereafter, the plurality of inorganic particles and the zirconium compound are heated at a heating temperature of 100°C to 140°C so that the zirconium compound reacts to become the zirconium oxide powder, coating the surface of the plurality of inorganic particles and forming a plurality of modified inorganic particles.

7. The method for producing glass fiber yarn according to claim 6, wherein the zirconium compound is selected from at least one of the group consisting of zirconium oxychloride, zirconium carbonate, zirconium hydroxide, zirconium nitrate, sodium zirconate, and zirconium silicate.

8. A method for producing glass fiber yarn according to claim 1, wherein the total weight of the glass raw materials is 100 wt%, and the glass raw materials consist of 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide.

9. The method for producing glass fiber yarn according to claim 1, wherein the thermal expansion coefficient of the glass fiber yarn is 2.88 PPM / °C to 3.34 PPM / °C.

10. Glass raw materials and A glass fiber yarn comprising a plurality of modified inorganic particles dispersed in the glass raw material, Each of the modified inorganic particles comprises inorganic particles and zirconium oxide powder coated on the inorganic particles, with the total weight of each of the modified inorganic particles being 100 wt%, the zirconium oxide powder content being 0.01 wt% to 5 wt%, and the inorganic particle content being 95 wt% to 99.99 wt%. The inorganic particles are selected from at least one of the group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide, magnesium oxide, talc, aluminum nitride, boron nitride, silicon carbide, zinc oxide, zirconium oxide, quartz, diamond powder, diamond-like powder, graphite, calcined kaolin, and fumed silica, and the glass fiber yarn is characterized in that the inorganic particles are selected from at least one of these groups.

11. The glass fiber yarn according to claim 10, wherein the average particle size of the modified inorganic particles is 0.01 μm to 50 μm.

12. The glass fiber yarn according to claim 10, wherein the total weight of the glass fiber yarn is 100 wt%, the content of the modified inorganic particles is 0.1 wt% to 5 wt%, and the content of the glass raw material is 95 wt% to 99.9 wt%.

13. The glass fiber yarn according to claim 10, wherein the total weight of the glass raw materials is 100 wt%, and the glass raw materials comprise 59 wt% to 66 wt% silicon dioxide, 15 wt% to 26 wt% aluminum(III) oxide, 8 wt% to 12 wt% magnesium oxide, 0.1 wt% to 4 wt% calcium oxide, 0.1 wt% to 10 wt% diboron trioxide, and 0.1 wt% to 2 wt% alkali metal oxide.

14. The glass fiber yarn according to claim 10, wherein the coefficient of thermal expansion of the glass fiber yarn is 2.88 PPM / °C to 3.34 PPM / °C.

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