An electronic grade glass fiber composition and glass fiber cloth thereof

Abstract

This invention provides an electronic-grade glass fiber composition and its glass fiber cloth, relating to the field of glass fiber technology. The electronic-grade glass fiber composition comprises: alumina, silicon oxide, magnesium oxide, calcium oxide, barium oxide, additives, and fillers; the mass ratio of alumina, barium oxide, and additives is (20-40):(2-8):(2-5); the additives are metal A and metal B in a mass ratio of (1-5):(1-5); metal A includes at least one selected from titanium, vanadium, chromium, manganese, iron, cobalt, and nickel. Metal B includes at least one selected from lanthanum, cerium, praseodymium, scandium, and yttrium. The electronic glass fiber cloth prepared from the electronic-grade glass fiber composition of this invention has high tensile strength and low moisture regain during long-term storage.

Description

Technical Field

[0001] This invention provides an electronic-grade glass fiber composition and its glass fiber cloth, relating to the field of glass fiber technology. Background Technology

[0002] Glass fiber is an inorganic fiber material. Electronic-grade glass fiber is used as a functional substrate in the electronics industry, and its main application areas include communications, computers, IC packaging, consumer electronics, and automotive electronics.

[0003] Traditional E-glass fiber suffers from problems such as poor mechanical properties and complex preparation methods.

[0004] Chinese patent CN110606665A discloses an electronic-grade glass fiber composition containing silicon dioxide, aluminum oxide, boron oxide, calcium oxide, magnesium oxide, titanium dioxide, ferric oxide, and alkali metal oxides (<1%).

[0005] This patent claims that its electronic-grade glass fiber composition is characterized by low cost and high corrosion resistance. It not only improves the electrical properties of glass, especially its dielectric properties, but also enhances the mechanical properties, water resistance, and acid resistance of glass fibers. Simultaneously, it significantly reduces raw material costs, substantially decreases raw material volatilization, and reduces erosion of refractory materials, making it suitable for large-scale tank furnace production. However, testing revealed that this patent has relatively low tensile strength and a high moisture regain rate after long-term storage.

[0006] Chinese patent CN103482875A discloses a glass fiber with a nominal diameter ranging from 5 micrometers to 13 micrometers, and a diameter deviation within ±15% of the nominal diameter. This glass fiber comprises alumina, silicon oxide, magnesium oxide, calcium oxide, iron oxide, and sodium oxide. By weight percentage, the glass fiber contains 20-39% alumina, 0.01-3% iron oxide, 0.01-8.8% sodium oxide, 0-10% boron oxide, 7-20% magnesium oxide, and 0% fluorine oxide. The silicon oxide content is 1.9-4.1 times that of calcium oxide, and the calcium oxide content is 1-1.8 times that of magnesium oxide. However, testing revealed that this patent has low tensile strength and a high moisture regain rate after long-term storage. Summary of the Invention

[0007] This invention addresses the problems existing in the prior art by providing an electronic-grade glass fiber composition and its glass fiber cloth. The electronic glass fiber cloth made from the electronic-grade glass fiber composition of this invention has high tensile strength and low moisture regain during long-term storage.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] In a first aspect, the present invention provides an electronic-grade glass fiber composition comprising: alumina, silicon oxide, magnesium oxide, calcium oxide, barium oxide, additives, and fillers;

[0010] The mass ratio of the alumina, barium oxide and additives is (20-40):(2-8):(2-5);

[0011] The additives are metal A and metal B;

[0012] The mass ratio of metal A to metal B is (1-5):(1-5).

[0013] The metal A includes at least one of titanium, vanadium, chromium, manganese, iron, cobalt, and nickel;

[0014] The metal B includes at least one of lanthanum, cerium, praseodymium, scandium, and yttrium.

[0015] Preferably, the mass ratio of the alumina, barium oxide and additives is (30-40):2:(2-5).

[0016] Furthermore, the mass ratio of the calcium oxide to the filler is (5-20):(1-5).

[0017] Preferably, the mass ratio of calcium oxide to filler is (5-6):(2-5).

[0018] Furthermore, the filler is montmorillonite and antimony oxide.

[0019] Furthermore, the mass ratio of montmorillonite to antimony oxide is (1-4):(1-4).

[0020] Preferably, the mass ratio of montmorillonite to antimony oxide is (1-3):(1-2).

[0021] Further, the electronic-grade glass fiber composition, by weight percentage, comprises: 20-40% alumina, 40-60% silicon dioxide, 5-8% magnesium oxide, 5-20% calcium oxide, 2-8% barium oxide, 2-5% additives, and 1-5% fillers.

[0022] Preferably, the electronic-grade glass fiber composition comprises, by weight percentage: 30-40% alumina, 40-50% silicon dioxide, 5-6% magnesium oxide, 5-6% calcium oxide, 2% barium oxide, 2-5% additives, and 1-5% filler.

[0023] In a second aspect, the present invention provides an electronic-grade glass fiber, comprising an electronic-grade glass fiber composition.

[0024] Thirdly, the present invention provides a glass fiber cloth comprising electronic-grade glass fiber.

[0025] Fourthly, the present invention provides a method for preparing glass fiber cloth, comprising the following steps: warping, sizing, weaving, desizing, drying and opening glass fibers to obtain glass fiber cloth.

[0026] Furthermore, the desizing includes a first desizing and a second desizing.

[0027] Preferably, the first desizing is performed at 350-400℃ and a linear speed of 90-110m / min until the slurry residue is 0.1-0.3% (by mass in the glass fiber fabric).

[0028] Preferably, the second desizing is performed at 350-380℃ for 35-50 hours to completely remove the sizing from the fabric surface.

[0029] The fiber opening is achieved by at least one of the following methods: silane coupling agent impregnation, hydroentangling fiber opening, or liquid carbon dioxide fiber opening.

[0030] Preferably, the fiber opening is achieved by impregnation with a silane coupling agent and hydroentangling.

[0031] More preferably, the silane coupling agent impregnation is performed by impregnating the silane coupling agent for 10-30 minutes at an impregnation temperature of 20-35°C.

[0032] More preferably, the hydroentanglement temperature is 60-80℃, the pressure is 0.6-0.8MPa, and the time is 10-30min.

[0033] Fifthly, the present invention provides an insulating component comprising the aforementioned glass fiber cloth.

[0034] In a sixth aspect, the present invention provides an electronic device including the aforementioned insulating component.

[0035] Beneficial effects:

[0036] This invention, through the specific ratio of alumina, barium oxide and additives, and the specific ratio of calcium oxide and filler, results in electronic glass fiber cloth with high tensile strength and low moisture regain during long-term storage, produced by the electronic-grade glass fiber composition of this invention. Detailed Implementation

[0037] The following non-limiting embodiments are intended to enable those skilled in the art to gain a more comprehensive understanding of the present invention, but do not limit the invention in any way. The following content is merely an exemplary description of the scope of protection claimed by the present invention, and those skilled in the art can make various changes and modifications to the present invention based on the disclosed content, and such changes should also fall within the scope of protection claimed by the present invention.

[0038] The present invention will be further described below by way of specific embodiments. Unless otherwise specified, all instruments, devices, equipment, reagents, products, etc., used in the embodiments of the present invention are obtained through conventional commercial means.

[0039] 1. Examples and Comparative Examples

[0040] The material lists for Examples 1-6 and Comparative Examples 1-6 are shown in Table 1, and the types of additives are shown in Table 2.

[0041] Table 1 (Unit: parts by weight)

[0042]

[0043] *: Replace montmorillonite with kaolinite.

[0044] Table 2

[0045]

[0046] The additives used in Comparative Examples 1, 3-5 are the same as those used in Example 3.

[0047] 2. Preparation method

[0048] (1) Preparation of glass fiber

[0049] The raw materials are mixed evenly to obtain a batch. The batch is melted and clarified to obtain molten glass, which is then drawn out through a nozzle on a stencil to form glass fibers.

[0050] Glass fibers are drawn and wound onto the rotating head of the drawing machine to form glass fiber yarn.

[0051] The prepared glass fiber has a diameter of 7 μm and a linear density of 22.5 ± 0.1.

[0052] (2) Preparation of glass fiber cloth

[0053] S1. Weaving: The glass fiber yarn is warped and sized, and then woven using an air-jet loom to obtain glass fiber fabric.

[0054] S2. Desizing: The glass fiber fabric is desized for the first time at 390℃ and a linear speed of 100m / min until the residual sizing liquid is 0.15% (by mass in the glass fiber fabric). Then, it is desized a second time at 360℃ for 40 hours to completely remove the sizing liquid from the fabric surface. After cooling and drying, the glass fiber roving is obtained.

[0055] S3 fiber opening: The glass fiber roving is impregnated in a silane coupling agent for 30 minutes at a temperature of 35°C. After impregnation, it is dried, hydroentangled, and rinsed with deionized water at 60°C to obtain the glass fiber cloth.

[0056] The hydroentanglement process involves a water temperature of 60℃, a pressure of 0.6MPa, and a time of 10min.

[0057] Examples 1-6 and Comparative Examples 1-6 of the present invention were prepared according to the above preparation method.

[0058] 3. Detection Examples

[0059] Embodiments 1-6 of the present invention conform to the provisions of GB / T18373—2013.

[0060] (1) Tensile strength: The tensile strength (warp and weft) of Examples 1-6 and Comparative Examples 1-6 of the present invention was tested in accordance with the provisions of GB / T18373-2013.

[0061] (2) Moisture regain A: Examples 1-6 and Comparative Examples 1-6 of the present invention were dried in an oven at 105°C until constant weight, denoted as W. 干 .

[0062] Examples 1-6 and Comparative Examples 1-6 were placed at room temperature (temperature 25℃±2℃, relative humidity 65%±5%), and their weights were measured at 10 days, 30 days, and 60 days, and recorded as W. 湿 .

[0063] .

[0064] Moisture regain rate B: The moisture regain rates of Examples 1-6 and Comparative Examples 1-6 were tested using the same method at a temperature of 45℃±2℃ and a humidity of 85%±5%.

[0065] The tensile strength (warp and weft) and moisture regain results of Examples 1-6 and Comparative Examples 1-6 are shown in Table 3.

[0066] Table 3

[0067]

[0068] The electronic glass fiber cloths of Examples 1-6 of this invention have high tensile strength and low moisture regain after long-term storage.

[0069] Comparative Example 1 altered the dosage relationship between alumina, barium oxide, and additives, resulting in a decrease in tensile strength and a high moisture regain rate during long-term storage.

[0070] Comparative Example 2 changed the type of additive, resulting in decreased tensile strength and high moisture regain during long-term storage.

[0071] Comparative Example 3 altered the ratio of metal oxide A to metal oxide B in the additive, resulting in decreased tensile strength and high moisture regain during long-term storage.

[0072] Comparative Example 4 altered the ratio of calcium oxide to filler, resulting in decreased tensile strength and high moisture regain during long-term storage.

[0073] Comparative Example 5 showed that replacing montmorillonite with kaolinite resulted in a decrease in tensile strength and a high moisture regain rate during long-term storage.

[0074] Comparative Example 6 altered the ratio of montmorillonite and antimony oxide in the filler, resulting in decreased tensile strength and high moisture regain during long-term storage.

[0075] The high tensile strength and low moisture regain of Examples 1-6 are due to the synergistic effect of their components. Alumina and barium oxide improve the mechanical strength and chemical stability of the fibers, while metals A and B in the additives further enhance the strength and toughness of the fibers by refining the grains and improving the microstructure. The fillers montmorillonite and antimony oxide enhance the bonding force between the fibers and the interface, and improve thermal stability and abrasion resistance. Simultaneously, the low hygroscopicity of these components reduces moisture adsorption, thereby lowering the moisture regain. The rational formulation and component selection of this composition enable it to exhibit excellent overall performance in the electronics field.

[0076] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. An electronic grade glass fiber composition characterized in that, include: Alumina, silicon dioxide, magnesium oxide, calcium oxide, barium oxide, additives and fillers; The mass ratio of the alumina, barium oxide and additives is (20-40):(2-8):(2-5); The additive is a metal A oxide and a metal B oxide in a mass ratio of (1-5):(1-5); The metal A includes at least one of titanium, vanadium, chromium, manganese, iron, cobalt, and nickel; The metal B includes at least one of lanthanum, cerium, praseodymium, scandium, and yttrium; The mass ratio of calcium oxide to filler is (5-20):(1-5); The filler is montmorillonite and antimony oxide; The mass ratio of montmorillonite to antimony oxide is (1-4):(1-4).

2. The electronic-grade glass fiber composition according to claim 1, characterized in that, By weight percentage, it includes: 20-40% aluminum oxide, 40-60% silicon oxide, 5-8% magnesium oxide, 5-20% calcium oxide, 2-8% barium oxide, 2-5% additives, and 1-5% fillers.

3. An electronic grade glass fiber characterized by, Includes the electronic-grade glass fiber composition according to any one of claims 1-2.

4. A glass fiber cloth comprising the electronic-grade glass fiber composition according to any one of claims 1-2.

5. The method for preparing the glass fiber cloth according to claim 4, characterized in that, The process includes the following steps: warping, sizing, weaving, desizing, drying and opening the glass fibers to obtain glass fiber cloth.

6. An insulating component, characterized by Includes the glass fiber cloth as described in claim 4.

7. An electronic device comprising the insulating component of claim 6.

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