Nanofiber-reinforced polyester fiber web material suitable for coal mine soft rock roadway support and preparation method thereof

Abstract

The application provides a nanofiber reinforced polyester fiber web material suitable for soft rock roadway support in a coal mine and a preparation method thereof, and the method comprises the following steps: plasma treatment of carbon nanofibers, polyimide nanofibers and poly-p-phenylene terephthalamide nanofibers to form active sites on the surfaces of the nanofibers; then the nanofibers are added into mixed active monomers and a composite catalyst to prepare nanofibers with surface in-situ graft modification; and finally, the modified nanofibers are reacted with a dispersing agent, an anti-aging agent, a reinforcing agent, a plasticizer, an antistatic agent, a flame retardant, a curing agent and a resin base material, and then melt spinning and weaving are performed to obtain the polyester fiber web material. The nanofibers with surface in-situ graft modification prepared by the application reduce the interfacial tension of the nanofibers, uniformly disperse the nanofibers in the resin and form a three-dimensional network structure in the base material, so that the internal cohesion, tensile strength and impact resistance of the prepared polyester fiber web are improved.

Description

Technical Field

[0001] This invention relates to the field of coal mine roadway support materials, and in particular to a nanofiber reinforced polyester fiber mesh material suitable for supporting soft rock roadways in coal mines and its preparation method. Background Technology

[0002] In my country's coal mine roadway surrounding rock control field, a collaborative control theory and technology of "support-modification-pressure relief" has gradually been formed. Soft rock roadways experience large deformation. Anchor mesh not only supports the loose rock between anchor bolts, improving the deformation resistance of the roadway surrounding rock, but also connects individual anchor bolts into a unified anchor group, enhancing the overall stability of the anchor support. Simultaneously, it can partially bring the loose surrounding rock between anchor bolts into a supported state. As an effective means of roadway surrounding rock support, anchor mesh has achieved good support results and has been widely used in the field of coal mine roadway surrounding rock support. Compared to metal mesh, polyester fiber mesh has advantages such as flexibility, lightness, high tensile strength, flame retardancy, antistatic properties, strong resistance to acid and alkali corrosion, and fast meshing speed. However, the strength and stiffness of polyester fiber mesh still need improvement compared to metal mesh, resulting in low support prestress, easy deformation and breakage of the anchor mesh, and limited support effect. Therefore, it is urgent to develop a new type of nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines and to promote its application. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a nanofiber-reinforced polyester fiber mesh material suitable for support in soft rock roadways of coal mines, and its preparation method, thereby improving the tensile strength and impact resistance of the mesh and enhancing the support effect.

[0004] One embodiment of the present invention proposes a method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0005] S1. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were subjected to plasma treatment to form active sites on their surfaces. The mass ratio of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers was 5:1:5. These were then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide, with a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the reaction was carried out in a microwave reaction tube at 190-200°C for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin, with a mass ratio of 1:7:2.

[0006] S2, weigh out 12-16 parts of surface in-situ grafted modified nanofibers, 1-3 parts of dispersant, 1 part of anti-aging agent, 1-5 parts of reinforcing agent, 1-2 parts of plasticizer, 1 part of antistatic agent, 1-2 parts of flame retardant, 1-4 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55-65℃ under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0007] In some embodiments, the dispersant is a mixture of vinyltrimethoxysilane and diphenyldimethoxysilane, wherein the mass ratio of vinyltrimethoxysilane to diphenyldimethoxysilane is 2:1.

[0008] In some embodiments, the anti-aging agent is a mixture of 2,6-di-tert-butyl-p-cresol, dimethyl dithiobenzoate, and triphenylphosphine, wherein the mass ratio of 2,6-di-tert-butyl-p-cresol, dimethyl dithiobenzoate, and triphenylphosphine is 1:4:3.

[0009] In some embodiments, the reinforcing agent is a mixture of zirconium silicate, zirconium trichloride, and zirconium trifluoroacetylacetonate, wherein the mass ratio of zirconium silicate, zirconium trichloride, and zirconium trifluoroacetylacetonate is 1:5:1.

[0010] In some embodiments, the plasticizer is a mixture of dibutyl maleate, tributyl citrate and di(2-ethylhexyl) phthalate, wherein the mass ratio of dibutyl maleate, tributyl citrate and di(2-ethylhexyl) phthalate is 1:7:3.

[0011] In some embodiments, the antistatic agent is a mixture of sodium nonylphenoxypropyl sulfonate, alkyl bis(α-hydroxyethylamine phosphate) and alkyl dicarboxymethyl ammonium acetate, wherein the mass ratio of sodium nonylphenoxypropyl sulfonate, alkyl bis(α-hydroxyethylamine phosphate) and alkyl dicarboxymethyl ammonium acetate is 1:1:5.

[0012] In some embodiments, the flame retardant is a mixture of ammonium polyphosphate, hexachlorocyclopentadiene, and bis(hexachlorocyclopentadiene)cyclooctane, wherein the mass ratio of ammonium polyphosphate, hexachlorocyclopentadiene, and bis(hexachlorocyclopentadiene)cyclooctane is 6:1:1.

[0013] In some embodiments, the curing agent is a mixture of triethylenetetramine and dimethylaminophenol, wherein the mass ratio of triethylenetetramine to dimethylaminophenol is 1:1.

[0014] In some embodiments, during step S1, the plasma treatment is performed with a power of 8-9 kW, a frequency of 2500-2550 MHz, and a plasma density of 28-30 W / cm³. 2The processing time is 10-12 minutes.

[0015] Another embodiment of the present invention provides a polyester fiber web material prepared by the above-described preparation method. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings.

[0017] in:

[0018] Figure 1 This is a flowchart illustrating a method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for supporting soft rock roadways in coal mines, as described in this invention. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following description, with reference to the accompanying drawings, describes a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, and its preparation method.

[0021] like Figure 1 As shown, one embodiment of the present invention proposes a method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0022] S1. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were subjected to plasma treatment to form active sites on their surfaces. The mass ratio of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers was 5:1:5. These were then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide, with a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the reaction was carried out in a microwave reaction tube at 190-200°C for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin, with a mass ratio of 1:7:2.

[0023] S2, weigh out 12-16 parts of surface in-situ grafted modified nanofibers, 1-3 parts of dispersant, 1 part of anti-aging agent, 1-5 parts of reinforcing agent, 1-2 parts of plasticizer, 1 part of antistatic agent, 1-2 parts of flame retardant, 1-4 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55-65℃ under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0024] The surface-grafted modified nanofibers prepared by the method described in this invention have undergone polymerization modification, which reduces the interfacial tension of the nanofibers, prevents nanofiber aggregation, and allows the nanofibers to be uniformly dispersed in the resin, forming a three-dimensional network structure in the matrix. This improves the internal cohesion, tensile strength, and impact resistance of the prepared polyester fiber mesh (i.e., anchor mesh). When the anchor mesh is subjected to external force and cracks occur, it can prevent the cracks from continuing to propagate and improve the support effect.

[0025] When the anchor mesh is deformed by external force, the nanofibers act as crystal nuclei, and stress-induced crystallization will further improve the crystallinity and orientation of the anchor mesh matrix, thereby improving the support effect of the anchor mesh.

[0026] It should be noted that the tensile strength of the polyester fiber web prepared in the embodiments of the present invention is maintained within a suitable range, between 69-79 MPa. This is because excessively high tensile strength increases the brittleness of the material, thereby reducing its ductility and impact toughness, making it prone to breakage. The polyester fiber web prepared by the present invention improves tensile strength without compromising its ductility. Furthermore, a higher elongation at break is not necessarily better; excessive elongation at break can lead to excessive deformation of the material, resulting in reduced support strength. Therefore, the elongation at break of the polyester fiber web prepared in Examples 1-12 of the present invention is maintained within a suitable range, between 11-16 MPa.

[0027] The preparation method of this invention is simple, low-cost, and highly practical.

[0028] In some alternative embodiments, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin can be replaced with other resin base materials in equal parts by mass.

[0029] In some embodiments, the dispersant is a mixture of vinyltrimethoxysilane and diphenyldimethoxysilane, wherein the mass ratio of vinyltrimethoxysilane to diphenyldimethoxysilane is 2:1.

[0030] In some embodiments, the anti-aging agent is a mixture of 2,6-di-tert-butyl-p-cresol, dimethyl dithiobenzoate, and triphenylphosphine, wherein the mass ratio of 2,6-di-tert-butyl-p-cresol, dimethyl dithiobenzoate, and triphenylphosphine is 1:4:3.

[0031] In some embodiments, the reinforcing agent is a mixture of zirconium silicate, zirconium trichloride, and zirconium trifluoroacetylacetonate, wherein the mass ratio of zirconium silicate, zirconium trichloride, and zirconium trifluoroacetylacetonate is 1:5:1.

[0032] In some embodiments, the plasticizer is a mixture of dibutyl maleate, tributyl citrate and di(2-ethylhexyl) phthalate, wherein the mass ratio of dibutyl maleate, tributyl citrate and di(2-ethylhexyl) phthalate is 1:7:3.

[0033] In some embodiments, the antistatic agent is a mixture of sodium nonylphenoxypropyl sulfonate, alkyl bis(α-hydroxyethylamine phosphate) and alkyl dicarboxymethyl ammonium acetate, wherein the mass ratio of sodium nonylphenoxypropyl sulfonate, alkyl bis(α-hydroxyethylamine phosphate) and alkyl dicarboxymethyl ammonium acetate is 1:1:5.

[0034] In some embodiments, the flame retardant is a mixture of ammonium polyphosphate, hexachlorocyclopentadiene, and bis(hexachlorocyclopentadiene)cyclooctane, wherein the mass ratio of ammonium polyphosphate, hexachlorocyclopentadiene, and bis(hexachlorocyclopentadiene)cyclooctane is 6:1:1.

[0035] In some embodiments, the curing agent is a mixture of triethylenetetramine and dimethylaminophenol, wherein the mass ratio of triethylenetetramine to dimethylaminophenol is 1:1.

[0036] In some embodiments, during step S1, the plasma treatment is performed with a power of 8-9 kW, a frequency of 2500-2550 MHz, and a plasma density of 28-30 W / cm³. 2 The processing time is 10-12 minutes.

[0037] It should be noted that if the power or frequency is too high, it will damage the internal structure of the nanofibers, thus limiting the fiber reinforcement effect; if the power or frequency is too low, it will result in the fiber size being too large, which will also limit the fiber reinforcement effect.

[0038] Excessive plasma density or processing time leads to an overly high density of active sites and functional groups on the fiber surface, increasing the interaction forces between nanofibers and making them prone to aggregation, resulting in poor dispersibility. Conversely, insufficient plasma density or processing time results in an underlying density of active sites and functional groups on the fiber surface, weakening the bonding force between the nanofibers and the matrix, and thus limiting the reinforcing effect of the grouting material.

[0039] By designing the power, frequency, density, and processing time within a reasonable range, the active sites formed on the surface of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers during plasma treatment can be more uniform, preventing nanofiber agglomeration and improving the tensile strength and elongation at break of the prepared polyester fiber web material.

[0040] Another embodiment of the present invention provides a polyester fiber web material prepared by the above-described preparation method.

[0041] The surface-grafted modified nanofibers prepared in this embodiment of the invention have undergone polymerization modification, which reduces the interfacial tension of the nanofibers, prevents nanofiber aggregation, and allows the nanofibers to be uniformly dispersed in the resin, forming a three-dimensional network structure in the matrix. This improves the internal cohesion, tensile strength, and impact resistance of the prepared polyester fiber mesh (i.e., anchor mesh). When the anchor mesh is subjected to external force and cracks occur, it can prevent the cracks from continuing to propagate and improve the support effect.

[0042] When the anchor mesh is deformed by external force, the nanofibers act as crystal nuclei, and stress-induced crystallization will further improve the crystallinity and orientation of the anchor mesh matrix, thereby improving the support effect of the anchor mesh.

[0043] The present invention will be further illustrated by specific embodiments below.

[0044] Example 1

[0045] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0046] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2500 MHz, and the plasma density is 28 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0047] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 1 part of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0048] The prepared surface-grafted nanofibers were tested and found to have a length of 133 nm, a rod diameter of 13 nm, and a dispersion coefficient of 1.12. The tensile strength of the prepared polyester fiber web material was 79 MPa, and the elongation at break was 16%.

[0049] Example 2

[0050] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0051] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2550 MHz, and the plasma density is 30 W / cm². 2 The processing time was 12 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0052] S2, according to the mass fractions, weigh 16 parts of surface in-situ grafted modified nanofibers, 2 parts of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 4 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin, heat to 65°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0053] The prepared surface-grafted nanofibers were tested and found to have a length of 136 nm, a rod diameter of 19 nm, and a dispersion coefficient of 1.17. The tensile strength of the prepared polyester fiber web material was 77 MPa, and the elongation at break was 14%.

[0054] Example 3

[0055] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0056] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2500 MHz, and the plasma density is 29 W / cm². 2 The processing time was 11 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0057] S2, weigh out 15 parts of surface in-situ grafted modified nanofibers, 3 parts of dispersant, 1 part of anti-aging agent, 3 parts of reinforcing agent, 2 parts of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 3 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0058] The prepared surface-grafted nanofibers were tested and found to have a length of 139 nm, a rod diameter of 17 nm, and a dispersion coefficient of 1.21. The tensile strength of the prepared polyester fiber web material was 71 MPa, and the elongation at break was 12%.

[0059] Example 4

[0060] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0061] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2520 MHz, and the plasma density is 29 W / cm². 2The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0062] S2, according to the mass fractions, weigh 14 parts of surface in-situ grafted modified nanofibers, 3 parts of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 2 parts of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 3 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin, heat to 65°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0063] The prepared surface-grafted nanofibers were tested and found to have a length of 143 nm, a rod diameter of 19 nm, and a dispersion coefficient of 1.25. The tensile strength of the prepared polyester fiber web material was 69 MPa, and the elongation at break was 11%.

[0064] Example 5

[0065] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0066] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2530 MHz, and the plasma density is 29 W / cm². 2 The processing time was 11 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0067] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 2 parts of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 3 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0068] The prepared surface-grafted nanofibers were tested and found to have a length of 146 nm, a rod diameter of 22 nm, and a dispersion coefficient of 1.24. The tensile strength of the prepared polyester fiber web material was 70 MPa, and the elongation at break was 12%.

[0069] Example 6

[0070] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0071] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2520 MHz, and the plasma density is 30 W / cm². 2 The processing time was 11 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0072] S2, according to the mass fractions, weigh 16 parts of surface in-situ grafted modified nanofibers, 2 parts of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin, heat to 60°C under a nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0073] The prepared surface-grafted nanofibers were tested and found to have a length of 140 nm, a rod diameter of 20 nm, and a dispersion coefficient of 1.21. The tensile strength of the prepared polyester fiber web material was 72 MPa, and the elongation at break was 13%.

[0074] Example 7

[0075] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0076] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2500 MHz, and the plasma density is 29 W / cm². 2 The processing time was 11 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0077] S2, weigh out 16 parts of surface in-situ grafted modified nanofibers, 3 parts of dispersant, 1 part of anti-aging agent, 5 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0078] The prepared surface-grafted nanofibers were tested and found to have a length of 141 nm, a rod diameter of 18 nm, and a dispersion coefficient of 1.19. The tensile strength of the prepared polyester fiber web material was 70 MPa, and the elongation at break was 12%.

[0079] Example 8

[0080] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0081] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2520 MHz, and the plasma density is 30 W / cm². 2The processing time was 11 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0082] S2, weigh out 15 parts of surface in-situ grafted modified nanofibers, 3 parts of dispersant, 1 part of anti-aging agent, 4 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0083] The prepared surface-grafted nanofibers were tested and found to have a length of 142 nm, a rod diameter of 18 nm, and a dispersion coefficient of 1.18. The tensile strength of the prepared polyester fiber web material was 70 MPa, and the elongation at break was 11%.

[0084] Example 9

[0085] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0086] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2550 MHz, and the plasma density is 30 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0087] S2, weigh out 15 parts of surface in-situ grafted modified nanofiber, 2 parts of dispersant, 1 part of anti-aging agent, 4 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0088] The prepared surface-grafted nanofibers were tested and found to have a length of 135 nm, a rod diameter of 18 nm, and a dispersion coefficient of 1.19. The tensile strength of the prepared polyester fiber web material was 73 MPa, and the elongation at break was 11%.

[0089] Example 10

[0090] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0091] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2510 MHz, and the plasma density is 29 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0092] S2, weigh out 14 parts of surface in-situ grafted modified nanofibers, 2 parts of dispersant, 1 part of anti-aging agent, 3 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0093] The prepared surface-grafted nanofibers were tested and found to have a length of 136 nm, a rod diameter of 19 nm, and a dispersion coefficient of 1.20. The tensile strength of the prepared polyester fiber web material was 72 MPa, and the elongation at break was 12%.

[0094] Example 11

[0095] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0096] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 9 kW, the frequency is 2540 MHz, and the plasma density is 30 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0097] S2, weigh out 15 parts of surface in-situ grafted modified nanofiber, 2 parts of dispersant, 1 part of anti-aging agent, 3 parts of reinforcing agent, 2 parts of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 60°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0098] The prepared surface-grafted nanofibers were tested and found to have a length of 138 nm, a rod diameter of 18 nm, and a dispersion coefficient of 1.21. The tensile strength of the prepared polyester fiber web material was 74 MPa, and the elongation at break was 13%.

[0099] Example 12

[0100] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0101] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2510 MHz, and the plasma density is 29 W / cm². 2The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 200°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0102] S2, weigh out 15 parts of surface in-situ grafted modified nanofiber, 2 parts of dispersant, 1 part of anti-aging agent, 3 parts of reinforcing agent, 2 parts of plasticizer, 1 part of antistatic agent, 2 parts of flame retardant, 2 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 65°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0103] The prepared surface-grafted nanofibers were tested and found to have a length of 140 nm, a rod diameter of 19 nm, and a dispersion coefficient of 1.21. The tensile strength of the prepared polyester fiber web material was 73 MPa, and the elongation at break was 13%.

[0104] Comparative Example 1

[0105] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0106] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 3000 MHz, and the plasma density is 28 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0107] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 1 part of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0108] The prepared surface-grafted nanofibers were tested and found to have a length of 102 nm, a rod diameter of 8 nm, and a dispersion coefficient of 0.76. The tensile strength of the prepared polyester fiber web material was 32 MPa, and the elongation at break was 5%.

[0109] Comparative Example 2

[0110] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0111] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2300 MHz, and the plasma density is 28 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0112] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 1 part of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0113] The prepared surface-grafted nanofibers were tested and found to have a length of 166 nm, a rod diameter of 19 nm, and a dispersion coefficient of 0.52. The tensile strength of the prepared polyester fiber web material was 37 MPa, and the elongation at break was 3%.

[0114] Comparative Example 3

[0115] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0116] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 5 kW, the frequency is 2500 MHz, and the plasma density is 28 W / cm². 2 The processing time was 10 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0117] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 1 part of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0118] The prepared surface-grafted nanofibers were tested and found to have a length of 171 nm, a rod diameter of 18 nm, and a dispersion coefficient of 0.39. The tensile strength of the prepared polyester fiber web material was 29 MPa, and the elongation at break was 2%.

[0119] Comparative Example 4

[0120] A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, comprising the following steps:

[0121] S1 involves plasma treatment of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers to form active sites on their surfaces. The power is 8 kW, the frequency is 2500 MHz, and the plasma density is 28 W / cm². 2The processing time was 5 minutes. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers were mixed in a mass ratio of 5:1:5 and then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide in a mass ratio of 1:2:2. A composite catalyst was added to promote the polymerization reaction. Nitrogen gas was introduced for protection, and the mixture was heated to 190°C in a microwave reaction tube for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst was a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin in a mass ratio of 1:7:2.

[0122] S2, weigh out 12 parts of surface in-situ grafted modified nanofibers, 1 part of dispersant, 1 part of anti-aging agent, 2 parts of reinforcing agent, 1 part of plasticizer, 1 part of antistatic agent, 1 part of flame retardant, 1 part of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55°C under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material.

[0123] The prepared surface-grafted nanofibers were tested and found to have a length of 195 nm, a rod diameter of 19 nm, and a dispersion coefficient of 0.44. The tensile strength of the prepared polyester fiber web material was 26 MPa, and the elongation at break was 4%.

[0124] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0126] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0127] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0128] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0129] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for preparing a nanofiber-reinforced polyester fiber mesh material suitable for support of soft rock roadways in coal mines, characterized in that, Includes the following steps: S1. Carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers are subjected to plasma treatment to form active sites on their surfaces. The mass ratio of carbon nanofibers, polyimide nanofibers, and poly(p-phenylene terephthalamide) nanofibers is 5:1:

5. These are then added to a mixed active monomer composed of 4-vinylpyridine, vinylpyrrolidone, and maleimide, with a mass ratio of 1:2:

2. A composite catalyst is added to promote the polymerization reaction. Nitrogen gas is introduced for protection, and the reaction is carried out in a microwave reaction tube at 190-200°C for 60 minutes to prepare surface-grafted modified nanofibers. The composite catalyst is a mixture of tributyltin alcohol, trimylated tributyltin, and dioctyloxytin, with a mass ratio of 1:7:

2. S2, weigh 12-16 parts of the surface in-situ grafted modified nanofibers, 1-3 parts of dispersant, 1 part of anti-aging agent, 1-5 parts of reinforcing agent, 1-2 parts of plasticizer, 1 part of antistatic agent, 1-2 parts of flame retardant, 1-4 parts of curing agent, 50 parts of bisphenol A type carbonate and 50 parts of epichlorohydrin according to the mass ratio, heat to 55-65℃ under nitrogen atmosphere, react for 60 minutes, and then melt spin and weave to obtain polyester fiber web material; In step S1, during plasma treatment, the power is 8-9 kW, the frequency is 2500-2550 MHz, and the plasma density is 28-30 W / cm³. 2 The processing time is 10-12 minutes.

2. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The dispersant is a mixture of vinyltrimethoxysilane and diphenyldimethoxysilane, with a mass ratio of vinyltrimethoxysilane to diphenyldimethoxysilane of 2:

1.

3. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The anti-aging agent is a mixture of 2,6-di-tert-butyl-p-cresol, dimethyl dithiobenzoate, and triphenylphosphine, with a mass ratio of 1:4:

3.

4. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The reinforcing agent is a mixture of zirconium silicate, zirconium trichloride and zirconium trifluoroacetylacetonate, with a mass ratio of zirconium silicate, zirconium trichloride and zirconium trifluoroacetylacetonate of 1:5:

1.

5. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The plasticizer is a mixture of dibutyl maleate, tributyl citrate and di(2-ethylhexyl) phthalate, with a mass ratio of 1:7:

3.

6. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The antistatic agent is a mixture of sodium nonylphenoxypropyl sulfonate, alkyl bis(α-hydroxyethylamine phosphate) and alkyl dicarboxymethyl ammonium acetate, with a mass ratio of 1:1:

5.

7. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The flame retardant is a mixture of ammonium polyphosphate, hexachlorocyclopentadiene, and bis(hexachlorocyclopentadiene)cyclooctane, with a mass ratio of 6:1:

1.

8. The method for preparing nanofiber-reinforced polyester fiber mesh material suitable for soft rock roadway support in coal mines according to claim 1, characterized in that, The curing agent is a mixture of triethylenetetramine and dimethylaminophenol, with a mass ratio of triethylenetetramine to dimethylaminophenol of 1:

1.

9. A polyester fiber web material prepared by the preparation method according to any one of claims 1-8.

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