Fireproof glass fiber mesh cloth, preparation method and application thereof

Abstract

The present application relates to the technical field of glass fiber cloth, and proposes a fireproof glass fiber mesh cloth, a preparation method and application thereof, and a preparation method of the fireproof glass fiber mesh cloth, which comprises the following steps: mixing basalt fibers and glass fibers to obtain mixed fibers; modifying the mixed fibers, and then twisting, drying and preparing blended yarn; subjecting the blended yarn to beaming treatment to serve as warp yarn; taking another blended yarn as weft yarn, interweaving the warp yarn and the weft yarn to obtain a glass fiber mesh cloth; coating a coating on the surface of the glass fiber mesh cloth, and curing and drying to obtain the fireproof glass fiber mesh cloth; and the modification treatment is to modify the mixed fibers by tannic acid and epoxy silane to obtain the fireproof glass fiber mesh cloth. The glass fiber cloth provided by the present application solves the technical problem of insufficient fireproof and anticorrosion performance of the existing glass fiber cloth.

Description

Technical Field

[0001] This invention relates to the field of glass fiber cloth technology, specifically to a fireproof glass fiber mesh cloth, its preparation method, and its application. Background Technology

[0002] Fiberglass mesh is a flexible reinforcing material made from fiberglass yarn or fiberglass blended yarn through weaving and surface coating. It features high tensile strength, good dimensional stability, and lightweight properties, and is widely used in building exterior wall insulation, cement mortar reinforcement, and roof waterproofing. With the development of modern construction projects towards higher floors, energy efficiency, durability, and fire safety, the fire resistance and corrosion resistance of building materials have become core indicators of industry focus.

[0003] However, existing fiberglass mesh fabrics lack sufficient fire resistance. When exposed to open flames, the surface coating rapidly carbonizes and peels off, causing the mesh skeleton to loosen, the material's mechanical strength to decrease sharply, and the reinforcing and binding effect to be lost. Simultaneously, its acid and alkali resistance is also poor. When used in cement-based high-alkali environments, salt spray, and corrosive media, it is prone to fiber erosion, interface debonding, and strength reduction. Therefore, developing a fire-resistant fiberglass mesh fabric that combines excellent fire resistance and corrosion resistance is of great significance. Summary of the Invention

[0004] To address the above technical problems, this invention provides a fireproof fiberglass mesh fabric, its preparation method, and its application. The fiberglass fabric provided by this invention solves the technical problems of insufficient fireproof and corrosion-resistant properties of existing fiberglass fabrics.

[0005] The specific technical solution of the present invention is as follows:

[0006] According to one aspect of the present invention, a method for preparing fire-resistant fiberglass mesh fabric is provided, comprising the following steps:

[0007] Basalt fiber and glass fiber are blended to obtain mixed fiber;

[0008] The mixed fibers are modified, then twisted and dried to obtain blended yarn;

[0009] The blended yarn is warped to serve as the warp yarn; another blended yarn is used as the weft yarn, and the warp and weft yarns are interwoven to obtain a glass fiber mesh fabric.

[0010] A coating is applied to the surface of the glass fiber mesh fabric, which is then cured and dried to obtain the fireproof glass fiber mesh fabric.

[0011] The modification process involves modifying the mixed fibers with tannic acid and epoxy silane.

[0012] In the above technical solution, the modification process includes the following steps:

[0013] The mixed fibers were ultrasonically treated in acetone, washed and dried, then mixed in an aqueous sodium hydroxide solution, tannic acid was added and mixed again, and the mixture was washed and dried to obtain tannic acid modified mixed fibers.

[0014] Epoxy silane was added to solvent I and mixed. After mixing with the tannic acid-modified mixed fiber, the mixture was filtered and dried to obtain the modified mixed fiber.

[0015] In the above technical solution, the ultrasonic treatment is performed with a power of 100-150W for 1-2 hours; and / or

[0016] The pH value of the sodium hydroxide aqueous solution is 8-9; and / or

[0017] The concentration of the tannic acid is 0.5~1 mg / mL; and / or

[0018] The mass concentration of the epoxy silane is 4% to 6%.

[0019] In the above technical solution, the raw materials of the coating include the following components by weight: 35-45 parts epoxy resin, 10-15 parts diluent, 3-5 parts filler, 10-20 parts flame retardant, 0.1-1 parts defoamer, 0.1-1 parts leveling agent, 0.1-1 parts dispersant, and 10-20 parts curing agent; the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide, and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:3-5; the composite magnesium aluminum hydrotalcite is obtained by modifying carbon composite magnesium aluminum hydrotalcite with a silane coupling agent.

[0020] In the above technical solution, the preparation method of the composite magnesium-aluminum hydrotalcite includes the following steps:

[0021] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were mixed in solvent II and the mixture was labeled as solution A.

[0022] After mixing glucose in solvent II, it is added to solution A and mixed. The pH value is adjusted to 9-10 and mixed. The mixture is then placed in a reactor and placed in an oven for reaction. After washing and drying, the pretreated magnesium aluminum hydrotalcite is obtained.

[0023] The silane coupling agent was added to solvent III and mixed. The pH value was adjusted to 4-5. Pretreated magnesium aluminum hydrotalcite was added and mixed. After washing and drying, the composite magnesium aluminum hydrotalcite was obtained.

[0024] In the above technical solution, the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose is 10:7.5:4.5~5.5; and / or

[0025] The amount of the silane coupling agent added is 3% to 5% of the mass of the pretreated magnesium aluminum hydrotalcite; and / or

[0026] The reaction temperature is 150~170℃, and the reaction time is 10~12h.

[0027] In the above technical solution, the diluent includes one or more of propylene glycol methyl ether, propylene glycol monoethyl ether, and cyclohexanone; and / or

[0028] The filler includes one or more of silica, kaolin, and talc; and / or

[0029] The defoamer is an organosilicone defoamer; and / or

[0030] The leveling agent includes one or more of BYK-333, BYK-332, and BYK-3560; and / or

[0031] The dispersant includes one or both of BYK-P104 and DISPERBYK-110; and / or

[0032] The curing agent includes one or more of diethylenetriamine, isophorone diamine, and m-phenylenediamine.

[0033] According to another aspect of the present invention, the present invention also provides a glass fiber mesh fabric prepared by the above-described preparation method.

[0034] According to yet another aspect of the invention, the invention also provides the application of fire-resistant fiberglass mesh in building materials.

[0035] In the above technical solution, the application of the fireproof fiberglass mesh in building materials includes the following steps: cutting the fireproof fiberglass mesh according to the shape of the building material substrate mold, stacking the cut fireproof fiberglass mesh in the building material substrate mold according to the thickness of the building material substrate, performing hot melt molding treatment, cooling, and obtaining building material parts.

[0036] Compared with existing technologies, this invention provides a fire-resistant fiberglass mesh. In this invention, the mixed fibers are modified with tannic acid and epoxy silane, improving the fire resistance and corrosion resistance of the fiberglass mesh. This is because, firstly, this method uses a blend of basalt fiber and fiberglass, and basalt fiber itself possesses excellent high-temperature resistance, flame retardancy, and chemical stability. Combined with fiberglass, it effectively enhances the fire resistance and mechanical strength of the mesh. Secondly, this method first modifies the mixed fibers with tannic acid. Tannic acid contains phenolic hydroxyl groups, which can form hydrogen bonds not only with the fiber surface but also with the polar active groups in the subsequent coating, enhancing the interfacial interactions between the mixed fibers and between the fibers and the coating, effectively preventing... Under stress or corrosive conditions, the interface debonds and delaminates, thereby reducing the intrusion of corrosive media. At the same time, its aromatic ring structure can promote char formation at high temperatures, forming a heat-insulating carbon layer, which effectively blocks the transfer of heat and oxygen and improves fire resistance. Subsequently, epoxy silanes are introduced for further modification. The silanol groups generated after the hydrolysis of epoxy silanes can form covalent bonds with the hydroxyl groups on the surface of tannic acid-modified fibers, further improving the bonding strength with the mixed fiber matrix and coating, inhibiting the peeling of the modified coating under acid and alkali conditions, and improving corrosion resistance. In addition, the epoxy groups can undergo ring-opening reactions with the phenolic hydroxyl groups in tannic acid and the active groups in subsequent coatings, further cross-linking and curing to form a network structure, thereby synergistically improving the fire resistance, corrosion resistance and mechanical properties of the mesh fabric. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention more apparent, the invention is described in detail below. It should be understood that the invention is not limited to the description herein.

[0038] Fiberglass

[0039] The glass fiber used in this invention is a type of glass fiber known in the art for use in glass fiber mesh fabrics. In the fireproof glass fiber mesh fabric of this invention, the glass fiber possesses characteristics of high tensile strength, excellent dimensional stability, good toughness, and light weight. As the basic skeleton material of the mesh fabric, it can effectively bear structural stress and endow the mesh fabric with excellent mechanical bonding and reinforcement properties.

[0040] Basalt fiber

[0041] The basalt fiber used in this invention is a type of basalt fiber known in the art for use in glass fiber mesh fabrics. In the fireproof glass fiber mesh fabric of this invention, basalt fiber has the characteristics of high temperature resistance, good flame retardancy, and excellent chemical stability. At the same time, it has high mechanical strength and good structural stability. When blended with glass fiber, it can improve the overall fireproof and flame-retardant ability of the mesh fabric by virtue of its own excellent high temperature resistance and flame retardant substrate properties.

[0042] Epoxy resin

[0043] The epoxy resin used in this invention is a known epoxy resin in the art that can be used in glass fiber mesh, and this invention is not limited to the epoxy resins listed below. For example, the epoxy resin may be E-44, E-51, or CYD-128. In the fireproof glass fiber mesh of this invention, the epoxy resin has excellent film-forming properties, bonding properties, and cross-linking curing properties, and can form a protective coating film on the surface of the mesh fabric, covering the fiber surface; simultaneously, after curing, it can form a high-strength three-dimensional cross-linked network structure, significantly improving the overall mechanical strength, structural stability, corrosion resistance, and fire protection capability of the mesh.

[0044] diluent

[0045] The diluent used in this invention is a known diluent for use in fiberglass mesh fabrics, and the invention is not limited to the diluents listed below. As examples, the diluent may be propylene glycol methyl ether, propylene glycol monoethyl ether, cyclohexanone, propylene glycol methyl ether acetate, or methyl isobutyl ketone. In the fire-retardant fiberglass mesh fabric of this invention, the diluent effectively reduces the overall viscosity of the coating, improves the fluidity and wettability of the coating, makes the components of the coating mix more evenly, facilitates uniform coating of the coating onto the surface of the mesh fabric, and avoids problems such as uneven coating thickness and material accumulation.

[0046] Defoamer

[0047] The defoamer used in this invention is a known defoamer in the art that can be used for fiberglass mesh fabrics, and this invention is not limited to the defoamers listed below. For example, the defoamer may be BK-L099, BYK-066N, or BYK-054. In the fireproof fiberglass mesh fabric of this invention, the defoamer's function is to eliminate bubbles generated during coating mixing and application, while inhibiting bubble regeneration, preventing defects such as pinholes and bubbles from appearing after the coating has cured, ensuring a smooth, dense, uniform, and continuous coating surface, improving the overall density and adhesion of the coating, and ensuring the fireproof, corrosion-resistant, and mechanical protective properties of the mesh fabric's protective coating.

[0048] Leveling agent

[0049] The leveling agent used in this invention is a known leveling agent in the art that can be used for fiberglass mesh fabrics, and this invention is not limited to the leveling agents listed below. For example, the leveling agent may be BYK-333, BYK-332, BYK-3560, BYK-306, or BYK-358N. In the fireproof fiberglass mesh fabric of this invention, the leveling agent functions to reduce the surface tension of the coating, improve the spreading and flow properties of the coating, eliminate surface defects such as brush marks, pinholes, and orange peel generated during the coating process, promote uniform spreading and stable film formation of the coating on the mesh fabric surface, improve the surface smoothness and uniformity of the coating, ensure a dense and continuous coating, and thus improve the adhesion and overall protective performance of the mesh fabric coating.

[0050] dispersant

[0051] The dispersant used in this invention is a known dispersant in the art that can be used in glass fiber mesh fabrics, and this invention is not limited to the dispersants listed below. For example, the dispersant may be BYK-P104, DISPERBYK-110, or BYK-164. In the fireproof glass fiber mesh fabric of this invention, the dispersant's role is to uniformly disperse solid powders such as flame retardants and fillers in the coating, effectively inhibit powder agglomeration and sedimentation, improve the mixing uniformity of each component, ensure the stability and uniformity of the coating system, and ensure that the coating formed is of uniform thickness and consistent performance, thereby steadily improving the fire protection and corrosion resistance of the mesh fabric.

[0052] curing agent

[0053] The curing agent used in this invention is a known curing agent in the art that can be used for glass fiber mesh, and this invention is not limited to the curing agents listed below. As examples, the curing agent can be diethylenetriamine, isophorone diamine, m-phenylenediamine, polyetheramine, or methylcyclopentanediamine. In the fireproof glass fiber mesh of this invention, the curing agent functions to undergo a cross-linking and curing reaction with epoxy resin, enabling the liquid coating to cure rapidly and form a dense, stable, and high-strength three-dimensional network paint film structure, effectively improving the coating's hardness, adhesion, water resistance, and acid and alkali corrosion resistance.

[0054] A method for preparing fire-resistant fiberglass mesh cloth

[0055] The method for preparing the fireproof glass fiber mesh of the present invention includes the following steps:

[0056] Basalt fiber and glass fiber are blended to obtain mixed fiber;

[0057] The blended fibers are modified, then twisted and dried to obtain blended yarn;

[0058] The blended yarn is warped to serve as the warp yarn; another blended yarn is used as the weft yarn, and the warp and weft yarns are interwoven to obtain a glass fiber mesh fabric.

[0059] A coating is applied to the surface of a glass fiber mesh fabric, which is then cured and dried to obtain a fire-resistant glass fiber mesh fabric.

[0060] The modification process involves modifying the mixed fibers with tannic acid and epoxy silane.

[0061] In this invention, the mass ratio of glass fiber to basalt fiber is 12:3~4.

[0062] In one embodiment of the present invention, the modification process includes the following steps:

[0063] The mixed fibers were ultrasonically treated in acetone, washed and dried, then mixed in an aqueous sodium hydroxide solution, tannic acid was added and mixed again, and then washed and dried to obtain tannic acid modified mixed fibers.

[0064] Epoxy silane was added to solvent I and mixed. Tannic acid was added to modify the mixed fiber and then mixed. After filtration and drying, the modified mixed fiber was obtained.

[0065] In one embodiment of the present invention, during ultrasonic treatment, the power is 100~150W and the time is 1~2h; the pH value of the sodium hydroxide aqueous solution is 8~9; the concentration of tannic acid is 0.5~1mg / mL; and the mass concentration of epoxysilane is 4%~6%.

[0066] In this invention, when tannic acid is added and mixing continues, the mixing time is 10-12 hours.

[0067] In this invention, solvent I is composed of water, anhydrous ethanol and glacial acetic acid; the mass ratio of water to anhydrous ethanol is 8:2~3, and the amount of glacial acetic acid added is 0.2%~0.3% of the total mass of water and anhydrous ethanol.

[0068] In this invention, the curing temperature is 80~100℃ and the curing time is 3~6h.

[0069] In one embodiment of the present invention, the raw materials of the coating include the following components by weight: 35-45 parts epoxy resin, 10-15 parts diluent, 3-5 parts filler, 10-20 parts flame retardant, 0.1-1 part defoamer, 0.1-1 part leveling agent, 0.1-1 part dispersant, and 10-20 parts curing agent; the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide, and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:3-5; the composite magnesium aluminum hydrotalcite is obtained by modifying carbon composite magnesium aluminum hydrotalcite with a silane coupling agent.

[0070] In the coating, the epoxy resin is present in 35 to 45 parts by weight, preferably 38 to 45 parts, more preferably 38 to 42 parts, and most preferably 40 to 42 parts.

[0071] In the coating, the amount of thinner by weight is 10 to 15 parts, preferably 12 to 15 parts, and more preferably 12 to 13 parts.

[0072] In the coating, the filler is 3 to 5 parts by weight, preferably 3 to 4 parts.

[0073] In the coating, the flame retardant is present in 10 to 20 parts by weight, preferably 15 to 20 parts, and more preferably 15 to 18 parts.

[0074] In the coating, the defoamer is present in a weight ratio of 0.1 to 1 part, preferably 0.3 to 1 part, and more preferably 0.5 to 0.8 parts.

[0075] In the coating, the leveling agent is present in a weight ratio of 0.1 to 1 part, preferably 0.1 to 0.7 parts, and more preferably 0.4 to 0.7 parts.

[0076] In the coating, the dispersant is present in a weight ratio of 0.1 to 1 part, preferably 0.2 to 0.8 parts, and more preferably 0.5 to 0.6 parts.

[0077] In the coating, the curing agent is present in 10 to 20 parts by weight, preferably 12 to 18 parts, and more preferably 14 to 16 parts.

[0078] In one embodiment of the present invention, the preparation method of composite magnesium-aluminum hydrotalcite includes the following steps:

[0079] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were mixed in solvent II and the mixture was labeled as solution A.

[0080] After mixing glucose in solvent II, it is added to solution A and mixed. The pH value is adjusted to 9-10 and mixed. The mixture is then placed in a reactor and placed in an oven for reaction. After washing and drying, pretreated magnesium aluminum hydrotalcite is obtained.

[0081] The silane coupling agent was added to solvent III and mixed. The pH value was adjusted to 4-5. Pretreated magnesium aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium aluminum hydrotalcite was obtained.

[0082] In one embodiment of the present invention, the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose is 10:7.5:4.5~5.5; the amount of silane coupling agent added is 3%~5% of the mass of the pretreated magnesium aluminum hydrotalcite; the reaction temperature is 150~170℃, and the reaction time is 10~12h.

[0083] In this invention, solvent II is double-distilled water, and the mass-to-volume ratio of magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to solvent II is 1g:10mL; the mass-to-volume ratio of glucose to solvent II is 1g:8mL; solvent III is composed of water and anhydrous ethanol in a mass ratio of 8:2~3.

[0084] In this invention, the coating incorporates composite magnesium-aluminum hydrotalcite, obtained by first carbonizing magnesium-aluminum hydrotalcite and then modifying it with a silane coupling agent. This improves the corrosion resistance and fire resistance of the fiberglass mesh. The reason for this is that the carbon composite layer enhances the high-temperature charring ability of the magnesium-aluminum hydrotalcite, promoting the formation of a char layer during combustion and blocking the transfer of heat, oxygen, and combustible products. At the same time, the layered magnesium-aluminum hydrotalcite can capture the acidic fumes generated during combustion, reducing smoke release, and synergistically enhances the flame-retardant effect with ammonium polyphosphate and magnesium hydroxide. The silane coupling agent modification improves the interfacial compatibility of the composite magnesium-aluminum hydrotalcite powder in the epoxy coating system, inhibits powder agglomeration and sedimentation, enhances the interfacial bonding force between the powder and the epoxy resin matrix, reduces internal defects in the coating, and can prevent corrosive media from penetrating into the coating under acidic and alkaline corrosive environments, avoiding local cracking and peeling of the coating, thereby further improving the overall fire resistance and corrosion resistance of the fiberglass mesh.

[0085] In this invention, the preparation method of the coating includes the following steps: after mixing epoxy resin and diluent for 10-15 minutes, adding flame retardant and filler and mixing for 15-25 minutes, adding dispersant, defoamer and leveling agent and continuing to mix for 5-10 minutes, then adding curing agent and mixing for 25-35 minutes to obtain the coating.

[0086] In one embodiment of the present invention, the diluent includes one or more of propylene glycol methyl ether, propylene glycol monoethyl ether, and cyclohexanone; the filler includes one or more of silica, kaolin, and talc; the defoamer is an organosilicon defoamer; the leveling agent includes one or more of BYK-333, BYK-332, and BYK-3560; the dispersant includes one or two of BYK-P104 and DISPERBYK-110; and the curing agent includes one or more of diethylenetriamine, isophorone diamine, and m-phenylenediamine.

[0087] A fireproof fiberglass mesh

[0088] The present invention also provides a mesh fabric prepared by the above preparation method.

[0089] Application of a fire-resistant fiberglass mesh in building materials.

[0090] The present invention also provides the application of fire-resistant fiberglass mesh in building material matrix, including the following steps: cutting the fire-resistant fiberglass mesh according to the shape of the building material matrix mold, stacking the cut fire-resistant fiberglass mesh in the building material matrix mold according to the thickness of the building material matrix, performing hot melt molding treatment, cooling, and obtaining building material parts.

[0091] To further illustrate the present invention, the following examples will provide a detailed description. The raw materials used in the following examples and comparative examples of the present invention are all commercially available products. Specifically, the glass fiber is alkali-free glass fiber with a linear density of 1000D; the basalt fiber has a relative density of 2.60~2.70 and a linear density of 200D; the epoxy resin is type E-44; the ammonium polyphosphate has an average particle size of 10μm; the magnesium hydroxide has an average particle size of 2μm; the defoamer is type BK-L099; the leveling agent is type BYK-333; the dispersant is type BYK-P104; and the silica is fumed silica with an average particle size of 20nm.

[0092] Example 1

[0093] Mix 35 parts epoxy resin and 10 parts propylene glycol methyl ether for 10 minutes, then add 10 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:3) and 3 parts silica and mix for 15 minutes. Then add 0.1 parts BYK-P104 dispersant, 0.1 parts BK-L099 defoamer and 0.1 parts BYK-333 leveling agent and continue mixing for 5 minutes. Finally, add 10 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 25 minutes to obtain the coating for later use.

[0094] Glass fiber and basalt fiber were blended at a mass ratio of 12:3 (basalt fiber consisted of 3 strands) to obtain mixed fiber. 15g of the mixed fiber was added to acetone and ultrasonically treated at 100W for 2h. After washing and drying, it was added to 200mL of sodium hydroxide aqueous solution with a pH of 8 and mixed for 1h. Tannic acid was added to make the concentration of tannic acid 0.5mg / mL, and mixing was continued for 10h. After washing and drying, tannic acid modified mixed fiber was obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2, and 0.2wt% glacial acetic acid was added and mixed for 1min. Add 4 wt% γ-glycidyl oxypropyltrimethoxysilane and mix for 20 min. Add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 20 mL and mix at 60 °C for 1.5 h. After filtration and drying, the modified mixed fibers are obtained. Then, the fibers are twisted and dried to obtain blended yarn. The blended yarn is warped and used as warp yarn. Another blended yarn is used as weft yarn. The warp and weft yarns are interwoven to obtain a glass fiber mesh fabric. Coating is applied to the surface of the glass fiber mesh fabric, cured at 80 °C for 6 h, and dried to obtain a fireproof glass fiber mesh fabric.

[0095] Example 2

[0096] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0097] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0098] Example 3

[0099] After mixing 45 parts epoxy resin and 15 parts propylene glycol methyl ether for 15 minutes, add 20 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:5) and 5 parts silica and mix for 25 minutes. Then add 1 part BYK-P104 dispersant, 1 part BK-L099 defoamer and 1 part BYK-333 leveling agent and continue mixing for 10 minutes. Finally, add 20 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 35 minutes to obtain the coating for later use.

[0100] Glass fiber and basalt fiber were blended at a mass ratio of 12:4 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 150W for 1 hour. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 9 and mixed for 2 hours. Tannic acid was then added to achieve a concentration of 1mg / mL, and mixing continued for 12 hours. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:3, and 0.3wt% glacial acetic acid was added and mixed for 20 minutes. 6 wt% γ-glycidyl etheroxypropyltrimethoxysilane was added and mixed for 30 min. Tannic acid-modified mixed fibers were added at a solid-liquid ratio of 1 g: 30 mL and mixed at 70 °C for 1.5 h. After filtration and drying, the modified mixed fibers were obtained. Then, the fibers were twisted and dried to obtain blended yarn. The blended yarn was warped and used as warp yarn. Another blended yarn was used as weft yarn. The warp and weft yarns were interwoven to obtain glass fiber mesh fabric. The surface of the glass fiber mesh fabric was coated with a coating, cured at 100 °C for 3 h, and dried to obtain fireproof glass fiber mesh fabric.

[0101] Example 4

[0102] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0103] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and double-distilled water was 1 g:10 mL) and mixed for 30 min, which was then labeled as solution A. Glucose was added to double-distilled water (the mass ratio of glucose to double-distilled water was 1 g:8 mL) and mixed for 1 h, then added to solution A and mixed for 25 min. The pH was adjusted to 9 and mixed for 1 h. The mixture was then placed in a reactor (80% of the filler) and placed in an oven at 150 °C for 10 h. After washing and drying, pretreated magnesium-aluminum hydrotalcite was obtained. 0.3 g of γ-glycidyl etheroxypropyltrimethoxysilane was added to 15 mL of solvent III (composed of water and anhydrous ethanol in a mass ratio of 8:2) and mixed for 30 min. The pH was adjusted to 4, and 10 g of pretreated magnesium-aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium-aluminum hydrotalcite was obtained. The mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose was 10:7.5:4.5.

[0104] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0105] Example 5

[0106] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0107] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass-to-volume ratio of magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to double-distilled water was 1 g:10 mL) and mixed for 50 min, which was then labeled as solution A. Glucose was added to double-distilled water (the mass-to-volume ratio of glucose to double-distilled water was 1 g:8 mL) and mixed for 2 h, then added to solution A and mixed for 35 min. The pH was adjusted to 10 and mixed for 1.5 h. The mixture was then loaded into a reactor (80% filler) and placed in an oven. The reaction was carried out at 170℃ for 12 h, and after washing and drying, pretreated magnesium-aluminum hydrotalcite was obtained. 0.5 g of γ-glycidyl etheroxypropyltrimethoxysilane was added to 15 mL of solvent III (composed of water and anhydrous ethanol in a mass ratio of 8:3) and mixed for 40 min. The pH value was adjusted to 5, and 10 g of pretreated magnesium-aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium-aluminum hydrotalcite was obtained. The mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose was 10:7.5:4.5.

[0108] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0109] Example 6

[0110] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0111] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and double-distilled water was 1 g:10 mL) and mixed for 50 min, which was then labeled as solution A. Glucose was added to double-distilled water (the mass ratio of glucose to double-distilled water was 1 g:8 mL) and mixed for 2 h, then added to solution A and mixed for 35 min. The pH was adjusted to 10 and mixed for 1.5 h. The mixture was then placed in a reactor (80% of the filler) and placed in an oven at 170 °C for 12 h. After washing and drying, pretreated magnesium-aluminum hydrotalcite was obtained. 0.5 g of γ-glycidyl etheroxypropyltrimethoxysilane was added to 15 mL of solvent III (composed of water and anhydrous ethanol in a mass ratio of 8:3) and mixed for 40 min. The pH was adjusted to 5, then 10 g of pretreated magnesium-aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium-aluminum hydrotalcite was obtained, with the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose being 10:7.5:5.

[0112] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0113] Example 7

[0114] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0115] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass-to-volume ratio of magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to double-distilled water was 1 g:10 mL) and mixed for 50 min, which was then labeled as solution A. Glucose was added to double-distilled water (the mass-to-volume ratio of glucose to double-distilled water was 1 g:8 mL) and mixed for 2 h, then added to solution A and mixed for 35 min. The pH was adjusted to 10 and mixed for 1.5 h. The mixture was then loaded into a reactor (80% filler) and placed in an oven. The reaction was carried out at 170℃ for 12 h, and after washing and drying, pretreated magnesium-aluminum hydrotalcite was obtained. 0.5 g of γ-glycidyl etheroxypropyltrimethoxysilane was added to 15 mL of solvent III (composed of water and anhydrous ethanol in a mass ratio of 8:3) and mixed for 40 min. The pH value was adjusted to 5, and 10 g of pretreated magnesium-aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium-aluminum hydrotalcite was obtained. The mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose was 10:7.5:5.5.

[0116] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0117] Example 8

[0118] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0119] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and double-distilled water was 1 g: 10 mL) and mixed for 50 min, which was then labeled as solution A. Glucose was added to double-distilled water (the mass ratio of glucose to double-distilled water was 1 g: 8 mL) and mixed for 2 h, then added to solution A and mixed for 35 min. The pH was adjusted to 10 and mixed for 1.5 h. The mixture was then loaded into a reactor (80% of the filler material) and placed in an oven at 170 °C for 12 h. After washing and drying, pretreated magnesium aluminum hydrotalcite was obtained, with the mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose being 10:7.5:5.

[0120] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0121] Example 9

[0122] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0123] Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were added to double-distilled water (the mass ratio of magnesium nitrate hexahydrate and aluminum nitrate nonahydrate to the volume of double-distilled water was 1 g:10 mL) and mixed for 50 min. The mixture was then placed in a reactor (80% of the filler) and reacted in an oven at 170 °C for 12 h. After washing and drying, magnesium-aluminum hydrotalcite was obtained. 0.5 g of γ-glycidyl etheroxypropyltrimethoxysilane was added to 15 mL of solvent III (composed of water and anhydrous ethanol in a mass ratio of 8:3) and mixed for 40 min. The pH was adjusted to 5, and 10 g of magnesium-aluminum hydrotalcite was added and mixed. After washing and drying, composite magnesium-aluminum hydrotalcite was obtained. The mass ratio of magnesium nitrate hexahydrate to aluminum nitrate nonahydrate was 10:7.5.

[0124] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fibers. 15g of the mixed fibers were added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, the fibers were added to 200mL of a sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was then added to achieve a concentration of 0.8mg / mL, and mixing continued for 11h. After washing and drying, tannic acid-modified mixed fibers were obtained. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25wt% glacial acetic acid was added. Mix for 15 min; add 5 wt% γ-glycidoxypropyltrimethoxysilane and mix for 25 min; add tannic acid-modified mixed fibers at a solid-liquid ratio of 1 g: 25 mL and mix at 65 °C for 2 h; after filtration and drying, obtain the modified mixed fibers; then twist and dry to obtain blended yarn; the blended yarn is warped and used as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; the surface of the glass fiber mesh fabric is coated with a coating, cured at 90 °C for 5 h and dried to obtain fireproof glass fiber mesh fabric.

[0125] Comparative Example 1

[0126] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0127] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fiber. 15g of the mixed fiber was added to acetone and ultrasonically treated at 120W for 1.5h. After washing and drying, it was added to 200mL of sodium hydroxide aqueous solution with a pH of 8.5 and mixed for 1.5h. Tannic acid was added to make the concentration of tannic acid 0.8mg / mL, and mixing was continued for 11h. After washing and drying, tannic acid-modified mixed fiber was obtained. Subsequently, it was twisted and dried to obtain blended yarn. The blended yarn was warped to serve as warp yarn. Another blended yarn was used as weft yarn. The warp and weft yarns were interwoven to obtain glass fiber mesh fabric. The surface of the glass fiber mesh fabric was coated with a coating, cured at 90℃ for 5h, and dried to obtain fireproof glass fiber mesh fabric.

[0128] Comparative Example 2

[0129] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0130] Glass fiber and basalt fiber were blended at a mass ratio of 12:3.5 (basalt fiber consisted of 3 strands) to obtain mixed fiber. Water and anhydrous ethanol were mixed at a mass ratio of 8:2.5, and 0.25 wt% glacial acetic acid was added and mixed for 15 min. 5 wt% γ-glycidoxypropyltrimethoxysilane was added and mixed for 25 min. Tannic acid-modified mixed fiber was added at a solid-liquid ratio of 1 g:25 mL and mixed at 65℃ for 2 h. After filtration and drying, the modified mixed fiber was obtained. Subsequently, it was twisted and dried to obtain blended yarn. The blended yarn was warped to serve as warp yarn. Another blended yarn was used as weft yarn. The warp and weft yarns were interwoven to obtain glass fiber mesh fabric. A coating was applied to the surface of the glass fiber mesh fabric, cured at 90℃ for 5 h, and dried to obtain fireproof glass fiber mesh fabric.

[0131] Comparative Example 3

[0132] After mixing 40 parts epoxy resin and 12 parts propylene glycol methyl ether for 13 minutes, add 15 parts flame retardant (the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite in a mass ratio of 6:2:4) and 4 parts silica and mix for 20 minutes. Then add 0.5 parts BYK-P104 dispersant, 0.3 parts BK-L099 defoamer and 0.6 parts BYK-333 leveling agent and continue mixing for 8 minutes. Finally, add 15 parts curing agent (the curing agent is composed of diethylenetriamine and isophorone diamine in a mass ratio of 1:5) and mix for 30 minutes to obtain the coating for later use.

[0133] Glass fiber and basalt fiber with a mass ratio of 12:3.5 (basalt fiber is 3 strands) are blended to obtain mixed fiber; then twisted and dried to obtain blended yarn; the blended yarn is warped to serve as warp yarn; another blended yarn is used as weft yarn, and the warp and weft yarns are interwoven to obtain glass fiber mesh fabric; a coating is applied to the surface of the glass fiber mesh fabric, cured at 90℃ for 5 hours and dried to obtain fireproof glass fiber mesh fabric.

[0134] Performance testing

[0135] The fire-resistant glass fiber mesh fabric was tested for alkali resistance using the test method specified in GB / T 20102-2006 "Test Method for Alkali Resistance of Glass Fiber Mesh Fabric - Sodium Hydroxide Solution Immersion Method".

[0136] The fire-retardant properties of the prepared fire-resistant glass fiber mesh were tested using the test method specified in GB / T 5454-1997 "Test for Burning Performance of Textiles - Oxygen Index Method".

[0137] The performance of each embodiment and comparative example after testing is shown in Table 1.

[0138] Table 1 Performance test results of Examples 1-9 and Comparative Examples 1-3

[0139] Group Retention rate of meridional tensile strength at break (%) Retention rate of latitudinal tensile breaking strength (%) Oxygen index (%) Example 1 79.6 82.1 32.9 Example 2 80.1 82.5 33.9 Example 3 79.1 81.7 33.3 Example 4 84.1 87.7 38.5 Example 5 85.2 88.0 38.1 Example 6 86.3 88.9 39.5 Example 7 85.9 88.2 39.0 Example 8 82.2 84.3 35.1 Example 9 81.9 84.0 34.7 Comparative Example 1 72.5 75.4 28.5 Comparative Example 2 70.8 73.0 27.7 Comparative Example 3 68.4 70.9 25.1

[0140] As shown in Table 1, the retention rates of warp and weft tensile breaking strength and oxygen index of Examples 1-3 are higher than those of Comparative Examples 1-3, indicating that when the mixed fibers are modified with tannic acid and epoxy silane, the corrosion resistance and fire retardancy of the glass fiber mesh can be effectively improved.

[0141] As shown in Table 1, the retention rates of warp and weft tensile breaking strength and the oxygen index of Examples 4-7 are higher than those of Examples 8-9. This indicates that when the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide and magnesium aluminum hydrotalcite modified by carbon composite and then by silane coupling agent, it can effectively improve the corrosion resistance and fire retardancy of glass fiber mesh.

[0142] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing a fire-resistant glass fiber mesh, characterized in that, Includes the following steps: Basalt fiber and glass fiber are blended to obtain mixed fiber; The mixed fibers are modified, then twisted and dried to obtain blended yarn; The blended yarn is warped to serve as the warp yarn; another blended yarn is used as the weft yarn, and the warp and weft yarns are interwoven to obtain a glass fiber mesh fabric. A coating is applied to the surface of the glass fiber mesh fabric, which is then cured and dried to obtain the fireproof glass fiber mesh fabric. The modification process involves modifying the mixed fibers with tannic acid and epoxy silane.

2. The method for preparing a fireproof glass fiber mesh according to claim 1, characterized in that, The modification process includes the following steps: The mixed fibers were ultrasonically treated in acetone, washed and dried, then mixed in an aqueous sodium hydroxide solution, tannic acid was added and mixed again, and the mixture was washed and dried to obtain tannic acid modified mixed fibers. Epoxy silane was added to solvent I and mixed. After mixing with the tannic acid-modified mixed fiber, the mixture was filtered and dried to obtain the modified mixed fiber.

3. The method for preparing a fireproof glass fiber mesh according to claim 2, characterized in that, During the ultrasonic treatment, the power is 100-150W and the time is 1-2 hours; and / or The pH value of the sodium hydroxide aqueous solution is 8-9; and / or The concentration of the tannic acid is 0.5~1 mg / mL; and / or The mass concentration of the epoxy silane is 4% to 6%.

4. The method for preparing a fireproof glass fiber mesh according to claim 1, characterized in that, The raw materials of the coating include the following components by weight: 35-45 parts epoxy resin, 10-15 parts diluent, 3-5 parts filler, 10-20 parts flame retardant, 0.1-1 part defoamer, 0.1-1 part leveling agent, 0.1-1 part dispersant, and 10-20 parts curing agent; the flame retardant is composed of ammonium polyphosphate, magnesium hydroxide, and composite magnesium aluminum hydrotalcite in a mass ratio of 6:2:3-5; the composite magnesium aluminum hydrotalcite is obtained by modifying carbon composite magnesium aluminum hydrotalcite with a silane coupling agent.

5. The method for preparing a fireproof glass fiber mesh according to claim 4, characterized in that, The preparation method of the composite magnesium-aluminum hydrotalcite includes the following steps: Magnesium nitrate hexahydrate and aluminum nitrate nonahydrate were mixed in solvent II and the mixture was labeled as solution A. After mixing glucose in solvent II, it is added to solution A and mixed. The pH value is adjusted to 9-10 and mixed. The mixture is then placed in a reactor and placed in an oven for reaction. After washing and drying, the pretreated magnesium aluminum hydrotalcite is obtained. The silane coupling agent was added to solvent III and mixed. The pH value was adjusted to 4-5. Pretreated magnesium aluminum hydrotalcite was added and mixed. After washing and drying, the composite magnesium aluminum hydrotalcite was obtained.

6. The method for preparing a fireproof glass fiber mesh according to claim 5, characterized in that, The mass ratio of magnesium nitrate hexahydrate, aluminum nitrate nonahydrate, and glucose is 10:7.5:4.5~5.5; and / or The amount of the silane coupling agent added is 3% to 5% of the mass of the pretreated magnesium aluminum hydrotalcite; and / or The reaction temperature is 150~170℃, and the reaction time is 10~12h.

7. The method for preparing a fireproof glass fiber mesh according to claim 4, characterized in that, The diluent includes one or more of propylene glycol methyl ether, propylene glycol monoethyl ether, and cyclohexanone; and / or The filler includes one or more of silica, kaolin, and talc; and / or The defoamer is an organosilicone defoamer; and / or The leveling agent includes one or more of BYK-333, BYK-332, and BYK-3560; and / or The dispersant includes one or both of BYK-P104 and DISPERBYK-110; and / or The curing agent includes one or more of diethylenetriamine, isophorone diamine, and m-phenylenediamine.

8. A fire-resistant fiberglass mesh fabric, characterized in that, It is prepared by the preparation method according to any one of claims 1 to 7.

9. The application of the fireproof fiberglass mesh fabric as described in claim 8 in building materials.

10. The application of a fireproof fiberglass mesh in a cement matrix according to claim 9, characterized in that, The process includes the following steps: cutting the fireproof fiberglass mesh according to the shape of the building material substrate mold; stacking the cut fireproof fiberglass mesh in the building material substrate mold according to the thickness of the building material substrate; performing hot melt molding treatment; and cooling to obtain the building material component.