Glass fiber filament and manufacturing method thereof

Abstract

The invention discloses a glass fiber filament and a manufacturing method thereof. The manufacturing method of the glass fiber filament comprises the following steps: dissolving a tungsten compound in a first organic solution to form a tungsten compound sol; adding a sulfur source into the tungsten compound sol, and stirring the sulfur source and the tungsten compound sol to form tungsten sulfide gel; placing the tungsten sulfide gel in an environment of 600 DEG C to 1200 DEG C for 4 to 6 hours to form tungsten sulfide powder; coating the tungsten sulfide powder on the surfaces of a plurality of inorganic particles to form a plurality of modified inorganic particles; mixing a plurality of modified inorganic particles into a glass raw material in a molten state; and drawing the glass raw material in which the plurality of modified inorganic particles are mixed to form a plurality of glass fibers. According to the glass fiber filament and the manufacturing method thereof disclosed by the invention, the problem that the existing glass fiber filament is easy to break in a yarn drawing process can be effectively improved.

Description

Technical Field

[0001] The present invention relates to a glass fiber filament and a manufacturing method thereof, and particularly to a glass fiber filament containing tungsten sulfide and a manufacturing method thereof. Background Art

[0002] In the existing manufacturing methods of glass fiber filaments, due to insufficient slidability of the glass fiber filaments, the glass fiber filaments are prone to breakage during the process of drawing yarn. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a glass fiber filament and a manufacturing method thereof in view of the deficiencies of the prior art, which can effectively improve the problem that the existing glass fiber filaments are prone to breakage during the process of drawing yarn.

[0004] To solve the above technical problem, one of the technical solutions adopted by the present invention is to provide a manufacturing method of a glass fiber filament, which includes: a tungsten compound sol formation step of dissolving a tungsten compound in a first organic solution to form a tungsten compound sol; a tungsten sulfide gel formation step of adding a sulfur source to the tungsten compound sol and stirring the sulfur source and the tungsten compound sol to form a tungsten sulfide gel; a heat treatment step of setting the tungsten sulfide gel in an environment of 600°C to 1200°C for 4 to 6 hours to form tungsten sulfide powder; a coating step of coating the tungsten sulfide powder on the surfaces of a plurality of inorganic particles to form a plurality of modified inorganic particles; wherein, based on the total weight of each of the modified inorganic particles being 100 wt%, the content of the tungsten sulfide powder is between 0.01 wt% and 5 wt%; a mixing step of mixing a plurality of the modified inorganic particles into a molten glass raw material; and a drawing step of drawing the glass raw material mixed with a plurality of the modified inorganic particles to form a plurality of glass fiber filaments.

[0005] Preferably, after the tungsten sulfide gel formation step and before the heat treatment step, the manufacturing method of the glass fiber filament further includes a washing and drying step of washing the tungsten compound gel multiple times and filtering it, and then baking the tungsten compound gel.

[0006] Preferably, in the coating step, the tungsten sulfide powder is first dispersed in a second organic solution, then the tungsten sulfide powder and the second organic solution are added to a plurality of the inorganic particles, and then the tungsten sulfide powder, the second organic solution and a plurality of the inorganic particles are stirred to coat the tungsten sulfide powder on a plurality of the inorganic particles and form a plurality of the modified inorganic particles.

[0007] Preferably, the tungsten compound is tungsten hexachloride.

[0008] Preferably, the weight ratio between the tungsten compound and the sulfur source is between 5:1 and 8:1.

[0009] Preferably, the inorganic particles are at least one selected from the group consisting of silica, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, alumina, and calcined kaolin.

[0010] Preferably, the particle size of each of the inorganic particles is between 0.01 micrometer and 50 micrometers.

[0011] Preferably, based on the total weight of each glass fiber filament being 100 wt%, the content of the modified inorganic particles is between 0.1 wt% and 5 wt%.

[0012] Preferably, each of the glass fiber filaments has a maximum static friction coefficient between 0.39 and 0.48.

[0013] To solve the above technical problems, another technical solution adopted by the present invention is to provide a glass fiber filament, which includes: a glass raw material; and a plurality of modified inorganic particles dispersed in the glass raw material; wherein each of the modified inorganic particles includes inorganic particles and a tungsten compound coated on the inorganic particles; wherein, based on the total weight of each of the modified inorganic particles being 100 wt%, the content of the tungsten sulfide powder is between 0.01 wt% and 5 wt%; wherein the inorganic particles are at least one selected from the group consisting of silica, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, alumina, and calcined kaolin.

[0014] Preferably, the particle size of each of the inorganic particles is between 0.01 micrometer and 50 micrometers; wherein, based on the total weight of each glass fiber filament being 100 wt%, the content of the modified inorganic particles is between 0.1 wt% and 5 wt%.

[0015] Preferably, the glass fiber filament has a maximum static friction coefficient between 0.39 and 0.48.

[0016] One of the beneficial effects of the present invention is that the glass fiber filament and its manufacturing method provided by the present invention can effectively improve the problem that the existing glass fiber filament is prone to breakage during the drawing process through the technical solutions of "tungsten compound sol formation step, tungsten sulfide gel formation step, heat treatment step, coating step, mixing step, and drawing step" and "a plurality of modified inorganic particles are dispersed in the glass raw material".

[0017] To further understand the features and technical content of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings. However, the provided drawings are only for reference and illustration, and are not used to limit the present invention. Description of the Drawings

[0018] Figure 1 It is a flowchart of the manufacturing method of the glass fiber filament according to an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the glass fiber filament according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the modified inorganic particles according to an embodiment of the present invention. Detailed Embodiments

[0021] The following are specific embodiments to illustrate the embodiments of the present invention related to "glass fiber filaments and their manufacturing methods". Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. Additionally, the drawings of the present invention are only for simple schematic illustration and are not drawn according to actual dimensions, hereby stating in advance. The following embodiments will further detail the related technical content of the present invention, but the disclosed content is not used to limit the protection scope of the present invention.

[0022] It should be understood that although terms such as "first", "second", "third", etc. may be used in this article to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another, or one signal from another. Additionally, the term "or" used in this article should, depending on the actual situation, possibly include any one or a combination of more of the associated listed items.

[0023] Manufacturing Method of Glass Fiber Filaments

[0024] Refer to Figures 1 to 3 as shown Figure 1 It is a flowchart of the manufacturing method of the glass fiber filament according to an embodiment of the present invention, Figure 2 It is a schematic diagram of the glass fiber filament according to an embodiment of the present invention, and Figure 3 It is a schematic diagram of the modified inorganic particles according to an embodiment of the present invention. An embodiment of the present invention provides a manufacturing method of glass fiber filaments. The manufacturing method of the glass fiber filaments includes a tungsten compound sol formation step S110, a tungsten sulfide gel formation step S120, a heat treatment step S130, a coating step S140, a mixing step S150, and a drawing step S160.

[0025] In the tungsten compound sol formation step S110, a tungsten compound is dissolved in a first organic solution to form a tungsten compound sol. In this embodiment, the tungsten compound may be, for example, tungsten hexachloride, and the first organic solution may be, for example, ethanol or isopropanol, but the present invention is not limited thereto. In the tungsten compound sol formation step, it is not necessary to stir or heat the tungsten compound and the first organic solution.

[0026] In the tungsten sulfide gel formation step S120, a sulfur source is added to the tungsten compound sol and the sulfur source and the tungsten compound sol are stirred to form a tungsten sulfide gel. The sulfur source may be, for example, sulfur powder or hydrogen sulfide gas.

[0027] When sulfur powder is used as the sulfur source, the weight ratio between the tungsten compound and the sulfur source is between 5:1 and 8:1. The amount of the tungsten compound used may be between 400 parts by weight and 800 parts by weight, and the amount of the sulfur source used may be between 75 parts by weight and 115 parts by weight. Preferably, the amount of the tungsten compound used may be between 500 parts by weight and 700 parts by weight, and the amount of the sulfur source used may be between 85 parts by weight and 105 parts by weight. More preferably, the amount of the tungsten compound used is about 600 parts by weight, and the amount of the sulfur source used is about 96.8 parts by weight. In addition, the weight ratio between the tungsten compound and the first organic solution may be between 1:1.5 and 1:2.5, and the amount of the first organic solution used may be between 900 parts by weight and 1500 parts by weight. Preferably, the amount of the first organic solution used is about 1200 parts by weight.

[0028] After the tungsten sulfide gel formation step S120 and before the heat treatment step S130, the method for manufacturing the glass fiber filament further includes a washing and drying step S121. First, the tungsten compound gel is washed and filtered multiple times, and then the tungsten compound gel is baked. Specifically, in the washing and drying step S121, the tungsten compound gel may be washed with a washing liquid to remove reaction impurities and residual solution (such as the first organic solution). The washing liquid may be, for example, water, ethanol or isopropanol, but the present invention is not limited thereto. In addition, in the washing and drying step, the temperature and time for baking the tungsten compound gel may be between 80°C and 120°C and between 1 hour and 10 hours, respectively, but the present invention is not limited thereto.

[0029] In the heat treatment step S130, the tungsten sulfide gel is set in an environment of 600°C to 1200°C for 4 to 6 hours to form tungsten sulfide powder. The temperature and time of the heat treatment step S130 will affect the crystal structure and properties of the tungsten sulfide powder. Specifically, if the temperature is too low, the conversion rate of the formed tungsten sulfide is low and the crystal orientation is more heterogeneous. The temperature of the heat treatment step S130 needs to be within a specific range, so that the crystal orientation of the formed tungsten sulfide powder is concentrated, the signal intensity of the crystal plane is strong, and the physical properties of the tungsten sulfide powder are better (lubricity and wear resistance are enhanced). The temperature of the heat treatment step S130 is more preferably between 650°C and 900°C.

[0030] In addition, if the time of the heat treatment step S130 is too long, the hardness of the tungsten sulfide powder will be too high, which is not conducive to coating on the silica carrier. If the time of the heat treatment step S130 is too short, the impurities of the formed tungsten sulfide will be too high.

[0031] In addition, the heat treatment step S130 can be performed in an argon or nitrogen atmosphere. The argon or nitrogen atmosphere refers to a pure argon environment. If the heat treatment step S130 is not performed in an argon or nitrogen atmosphere, the oxygen in the environment may cause oxidation of the tungsten sulfide powder, thereby affecting the maximum static friction coefficient of the glass fiber filament 100.

[0032] In the coating step S140, the tungsten sulfide powder is coated on the surfaces of a plurality of inorganic particles to form a plurality of modified inorganic particles 1. The modified 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 sulfide powder. Based on the total weight of each of the modified inorganic particles being 100 wt%, the content of the tungsten sulfide powder is between 0.01 wt% and 5 wt%, and the content of the inorganic particles is between 95 wt% and 99.9 wt%. The particle size of each of the inorganic particles is between 0.01 micrometers and 50 micrometers.

[0033] Specifically, in the coating step S140, the tungsten sulfide powder is first dispersed in the second organic solution, and then the tungsten sulfide powder and the second organic solution are added to the plurality of inorganic particles, and then the tungsten sulfide powder, the second organic solution and the plurality of inorganic particles are stirred so that the tungsten sulfide powder is coated on the plurality of inorganic particles and a plurality of modified inorganic particles 1 are formed. More specifically, in the coating step S140, the tungsten sulfide powder is dispersed rather than dissolved in the second organic solution, and the tungsten sulfide powder can be dispersed in the second organic solution, for example, by mechanical grinding or ultrasonic treatment, but the present invention is not limited thereto. In addition, the second organic solution in which the tungsten sulfide powder is dispersed can be added to the stirring inorganic particles by a dropping method, and then the tungsten sulfide powder, the second organic solution and the plurality of inorganic particles are continuously stirred and dried to obtain a plurality of modified inorganic particles 1.

[0034] The second organic solution can be, for example, isopropyl alcohol, and the inorganic particles can be at least one selected from the group consisting of silica, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, alumina, and calcined kaolin, but the present invention is not limited thereto.

[0035] In the mixing step S150, a plurality of the modified inorganic particles 1 are mixed into the glass raw material 2 in a molten state. Based on the total weight of the glass raw material being 100 wt%, the glass raw material 2 can, for example, contain 54 wt% to 63 wt% of silica, 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 trioxide, and 0 wt% to 7 wt% of rhenium trioxide, but the present invention does not limit the specific components and the content of each component contained in the glass raw material 2.

[0036] In the drawing step S160, the glass raw material 2 mixed with a plurality of the modified inorganic particles 1 is drawn to form a plurality of glass fiber filaments. Based on the total weight of each glass fiber filament 100 being 100 wt%, the content of the modified 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%.

[0037] It is worth mentioning that after the drawing step S160, the plurality of glass fiber filaments 100 already have excellent slidability, and after the drawing step S160, there is no need to add any lubricant to the surface of the plurality of glass fiber filaments 100. In addition, in the present invention, the modified inorganic particles 1 are uniformly dispersed in the glass fiber filaments 100, rather than only on the surface of the glass fiber filaments 100, so that the glass fiber filaments 100 are not easily broken in the drawing step S160.

[0038] In other words, the manufacturing method of glass fiber filaments with lubricant added after the drawing step and glass fiber filaments with lubricant only on the surface are not suitable for comparison with the manufacturing method of the glass fiber filaments and the glass fiber filaments 100 in the present invention. In addition, if the lubricant is only added to the surface of the glass fiber filaments, since the slidability inside the glass fiber filaments is not improved, the glass fiber filaments are likely to break during the drawing process.

[0039] In addition, if the tungsten sulfide powder is directly added to the glass raw material 2, the tungsten sulfide powder cannot be uniformly dispersed in the glass fiber filaments 100. Accordingly, in the manufacturing method of the glass fiber filaments of the present invention, the tungsten sulfide powder is first coated on the surface of the inorganic particles to form the modified inorganic particles 1, and then the modified inorganic particles 1 are dispersed in the glass raw material 2, so that the modified inorganic particles 1 can be uniformly dispersed in the glass fiber filaments 100.

[0040] Each of the glass fiber filaments 100 has a maximum static friction coefficient between 0.39 and 0.48. In addition, it is worth mentioning that since the melting point of tungsten sulfide is about between 1500 °C and 1550 °C, the glass fiber filaments 100 containing the modified inorganic particles 1 can have excellent thermal stability.

[0041] Glass fiber filament

[0042] The present invention also provides a glass fiber filament 100, which may but is not limited to be obtained by the aforementioned manufacturing method of glass fiber filaments. The glass fiber filament 100 includes a glass raw material 2 and a plurality of modified inorganic particles 1 dispersed in the glass raw material 2.

[0043] Each of the modified inorganic particles includes an inorganic particle and tungsten sulfide powder coated on the inorganic particle. The modified inorganic particle 1 has a core-shell structure, and the core-shell structure includes a core layer 11 formed by the inorganic particle and a shell layer 12 formed by the tungsten sulfide powder. Based on the total weight of each of the modified inorganic particles being 100 wt%, the content of the tungsten sulfide powder is between 0.01 wt% and 5 wt%. The inorganic particle may be at least one selected from the group of materials consisting of silica, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, alumina, and calcined kaolin.

[0044] The particle size of each of the inorganic particles is between 0.01 micrometer and 50 micrometers. Based on the total weight of each of the glass fiber filaments being 100 wt%, the content of the modified inorganic particles is between 0.1 wt% and 5 wt%.

[0045] The glass fiber filament has a maximum static friction coefficient between 0.39 and 0.48.

[0046] Experimental data test

[0047] Hereinafter, the content of the present invention will be described in detail with reference to Example 1 to 3 and Comparative Example 1. However, the following examples are only for helping to understand the present invention, and the scope of the present invention is not limited to these examples.

[0048] In Comparative Example 1, no modified inorganic particles were added. In the manufacturing methods of the glass fiber filaments of Example 1 to 3, based on the total weight of the glass fiber filaments being 100 wt%, the contents of the modified inorganic particles were 0.2 wt%, 1 wt%, and 2 wt%, respectively.

[0049] The maximum static friction coefficient, abrasion resistance, thermal stability, and electrical conductivity of the glass fiber filaments obtained by the manufacturing methods of Comparative Example 1 and Example 1 to 3 are shown in Table 1 below, and the related test methods are described as follows.

[0050] Test of the maximum static friction coefficient: Take two test pieces with a thickness of 5 mm and composed of a plurality of glass fiber filaments, and measure the maximum static friction coefficient of the test pieces under a load condition of 200 g with a friction coefficient measuring instrument of model CFT-400.

[0051] Abrasion resistance test: Contact the sample made of the glass fiber filament with the grinding wheel of a grinding machine, and observe and score the abrasion resistance of the sample.

[0052] Thermal stability test: Measure the thermal expansion coefficient of the sample made of the glass fiber filament with a thermomechanical analyzer.

[0053] Table 1 Maximum static friction coefficient of the glass fiber filaments of Comparative Example 1 and Example 1 to 3

[0054]

[0055]

[0056] Discussion on Test Results

[0057] The more modified inorganic particles are added, the lower the maximum static friction coefficient and the better the wear resistance. This can keep the structural integrity and appearance quality of the product for a long time and improve the service life of the product. In a high-friction environment, the wear resistance of the fiberglass cloth made of glass fiber filaments also helps to reduce the heat generated by friction, prevent excessive temperature rise and material damage, thereby protecting the safety of equipment and structures.

[0058] The data of the coefficient of thermal expansion shows that the more modified inorganic particles are added, the better the heat resistance. The fiberglass cloth with strong heat resistance can maintain the stability of its structure at high temperatures and is not easily melted or deformed. This is very important for applications that need to maintain shape and strength in high-temperature environments, such as in fire insulation materials, high-temperature filters and other fields. Therefore, the modified inorganic particles provided by the present invention can improve the physical properties of glass fiber filaments.

[0059] Advantages of the Embodiment

[0060] One of the advantages of the present invention is that the glass fiber filaments and the manufacturing method thereof provided by the present invention can effectively improve the problem that the existing glass fiber filaments are easily broken during the drawing process through the technical solutions of "tungsten compound sol formation step, tungsten sulfide gel formation step, heat treatment step, coating step, mixing step and drawing step" and "a plurality of modified inorganic particles are dispersed in the glass raw material".

[0061] The content disclosed above is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the content of the specification and drawings of the present invention are included in the patent scope of the present invention.

Claims

1. A method for producing glass fiber yarn, characterized in that: The manufacturing method of the glass fiber yarn comprises: The tungsten compound sol forming step is to dissolve the tungsten compound in the first organic solution to form Tungsten compound sol; a tungsten sulfide gel forming step, adding a sulfur source to the tungsten compound sol and stirring the sulfur source and the tungsten compound sol to form a tungsten sulfide gel; A heat treatment step, placing the tungsten sulfide gel in an environment of 600° C. to 1200° C. for 4 to 6 hours to form tungsten sulfide powder; A coating step, coating the tungsten sulfide powder on the surface of a plurality of inorganic particles to form a plurality of modified inorganic particles; wherein the content of the tungsten sulfide powder is between 0.01wt% and 5wt% based on the total weight of each of the modified inorganic particles being 100wt%; a mixing step, mixing the plurality of modified inorganic particles into a molten glass raw material; and The drawing step is to draw the glass raw material mixed with the plurality of modified inorganic particles to form a plurality of glass fiber yarns.

2. The method for producing glass fiber yarn according to claim 1, characterized in that: After the tungsten sulfide gel forming step and before the heat treatment step, the glass fiber manufacturing method further includes a washing and drying step, wherein the tungsten compound gel is first washed and filtered multiple times, and then the tungsten compound gel is baked.

3. The method for producing glass fiber yarn according to claim 1, characterized in that: In the coating step, the tungsten sulfide powder is first dispersed in a second organic solution, and then the tungsten sulfide powder and the second organic solution are added to the plurality of inorganic particles, and then the tungsten sulfide powder, the second organic solution and the plurality of inorganic particles are stirred so that the tungsten sulfide powder is coated on the plurality of inorganic particles and a plurality of modified inorganic particles are formed.

4. The method for producing glass fiber yarn according to claim 1, characterized in that: The tungsten compound is tungsten hexachloride.

5. The method for producing glass fiber yarn according to claim 1, characterized in that: The weight ratio of the tungsten compound to the sulfur source is between 5:1 and 8:

1.

6. The method for producing glass fiber yarn according to claim 1, characterized in that: The inorganic particles are at least one selected from a material group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide and calcined kaolin.

7. The method for producing glass fiber yarn according to claim 1, characterized in that: The particle size of each of the inorganic particles is between 0.01 microns and 50 microns.

8. The method for producing glass fiber yarn according to claim 1, characterized in that: Based on the total weight of each of the glass fiber strands being 100 wt %, the content of the modified inorganic particles is between 0.1 wt % and 5 wt %.

9. The method for producing glass fiber yarn according to claim 1, characterized in that: Each of the glass fiber filaments has a maximum static friction coefficient between 0.39 and 0.

48.

10. A glass fiber yarn, characterized in that: The glass fiber yarn comprises: Glass raw materials; and A plurality of modified inorganic particles are dispersed in the glass raw material; wherein each of the modified inorganic particles comprises an inorganic particle and a tungsten sulfide powder coated on the inorganic particle; wherein, based on the total weight of each of the modified inorganic particles being 100wt%, the content of the tungsten sulfide powder is between 0.01wt% and 5wt%; The inorganic particles are at least one selected from a material group consisting of silicon dioxide, titanium dioxide, aluminum hydroxide, magnesium hydroxide, calcium carbonate, aluminum oxide and calcined kaolin.

11. The glass fiber filament according to claim 10, characterized in that: The particle size of each of the inorganic particles is between 0.01 micrometers and 50 micrometers; wherein, based on the total weight of each of the glass fiber yarns being 100wt%, the content of the modified inorganic particles is between 0.1wt% and 5wt%.

12. The glass fiber filament according to claim 10, characterized in that: The glass fiber filaments have a maximum static friction coefficient between 0.39 and 0.48.

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