A fabric modifying coating and method of making and using same

Abstract

The application discloses a fabric modification coating and a preparation method and application thereof. The fabric modification coating comprises an ionic liquid polymer and a silicon-containing substance. The ionic liquid polymer is a polymer containing a double bond ionic liquid. The silicon-containing substance is selected from at least one of an inorganic silicon compound, a saturated polysiloxane and an unsaturated polysiloxane polymer. The fabric modification coating can be used in polyester fabric and / or flame-retardant polyester fabric, and has good anti-dripping property, fastness or durability and the like.

Description

Technical Field

[0001] This invention belongs to the field of polyester coatings, and particularly relates to fabric-modified coatings that can be applied to polyester substrates to improve anti-drip properties. Background Technology

[0002] Polyethylene terephthalate (PET, polyester) is a widely used polymer in the textile industry, accounting for over 80% of the chemical fiber market. Therefore, the development trends and market fluctuations of polyester products have become a hot topic of concern in the chemical fiber industry. PET has a melting point of 260℃ and a limiting oxygen index (LOI) of 21%, classifying it as a flammable material.

[0003] Meanwhile, when PET fibers burn, they generate heat exceeding their own molten heat, causing the matrix to soften easily and form molten droplets, triggering secondary combustion and releasing severe smoke, resulting in personal injury and significant economic losses. Therefore, the demand for flame-retardant and anti-dripping technologies for polyester and fabrics is becoming increasingly urgent.

[0004] Patent CN102978735A discloses a method for manufacturing flame-retardant and anti-drip polyester, comprising the following steps: A) Mixing four raw materials—basic magnesium sulfate whiskers, β-type silicon nitride whiskers, tetraneedle zinc oxide whiskers, and magnesium salt whiskers—evenly, calcining them in a vacuum furnace, dispersing them in a sodium hexametaphosphate solution, and performing plasma treatment under normal pressure; then filtering through a 200-mesh screen and drying; B) Mixing the whiskers obtained in step A) with flame retardants melamine cyanurate, microencapsulated red phosphorus flame retardant, and silane coupling agent at 75°C; C) Formulating the flame-retardant and anti-drip whiskers obtained in step B) into a flame-retardant and anti-drip whisker glycol solution; D) Blending or copolyesterifying the flame-retardant and anti-drip whiskers to form a flame-retardant and anti-drip polyester, and then using composite spinning technology to produce a core-sheath type flame-retardant and anti-drip polyester with the flame-retardant and anti-drip polyester as the sheath layer. However, the anti-drip agent added in this method is an inorganic material, which is prone to migration and has poor fastness or durability. Summary of the Invention

[0005] To overcome the dripping problem in the combustion process of polyester fabrics in the prior art, the present invention provides a novel fabric modification coating, its preparation method and application. The fabric modification coating includes an ionic liquid polymer and a silicon-containing substance. The fabric modification coating can be used on polyester fabrics and / or flame-retardant polyester fabrics and has good anti-dripping properties, fastness or durability.

[0006] One of the objectives of this invention is to provide a novel fabric-modified coating comprising an ionic liquid polymer and a silicon-containing substance.

[0007] In a preferred embodiment, the fabric-modified coating is obtained by mixing a double-bonded ionic liquid monomer with a silicon-containing precursor and then polymerizing the mixture.

[0008] In a preferred embodiment, the ionic liquid polymer is a polymer containing a double-bonded ionic liquid (obtained after polymerization), wherein the double-bonded ionic liquid is selected from at least one of imidazole ionic liquids containing double bonds, preferably from at least one of the compounds shown in formula (1):

[0009]

[0010] In formula (1), either R1 or R2 is selected from an unsaturated substituent containing a double bond, and the other is selected from a saturated substituent. - It represents anion.

[0011] In a further preferred embodiment, in formula (1), either R1 or R2 is selected from alkenyl (preferably C2-C6 alkenyl) and the other is selected from alkyl (preferably C1-C20 alkyl), A - It is selected from one of the following: halide anions, acetate anions, halide-substituted acetate anions, hexafluorophosphate anions, sulfonate anions, tetrafluoroborate anions, and dicyanoamine anions.

[0012] Wherein, the alkenyl group of C2 to C6 can be vinyl, propenyl, allyl, butenyl, pentenyl or hexenyl, and the alkyl group of C1 to C20 can be methyl, ethyl, propenyl, butyl, pentyl or hexyl, C8 alkyl, C10 alkyl, C12 alkyl, C14 alkyl, C16 alkyl, C18 alkyl or C20 alkyl.

[0013] In a preferred embodiment, the double-bonded ionic liquid is selected from at least one of the compounds shown in formulas (2) to (3):

[0014]

[0015] In formulas (2) to (3), R1 is selected from C1 to C20 alkyl groups, and A - Selected from Br - Cl - CH3COO - C3F7COO - CF3COO - BF4 - PF6 - CF3SO3 - C4F9SO3 - Or N(CN)2 - .

[0016] In a further preferred embodiment, the double-bonded ionic liquid is selected from at least one of the following: 1-vinyl-3-butylimidazolium hexafluorophosphate, 1-vinyl-3-butylimidazolium tetrafluoroborate, 1-allyl-3-methylimidazolium tetrafluoroborate, 1-allyl-3-methylimidazolium hexafluorophosphate, 1-allyl-3-methylimidazolium trifluoromethane sulfonate, and 1-allyl-3-methylimidazolium dinitrile ammonium salt (the structures of which are shown below respectively).

[0017]

[0018] In a preferred embodiment, the silicon-containing material is selected from at least one of inorganic silicon compounds, saturated polysiloxanes, unsaturated polysiloxanes, and / or their polymers.

[0019] Wherein, the unsaturated polysiloxane and / or its polymer refers to unsaturated polysiloxane and / or unsaturated polysiloxane polymer, and the unsaturated polysiloxane polymer refers to the polymer obtained by polymerizing unsaturated polysiloxane.

[0020] In a further preferred embodiment, the inorganic silicon compound is selected from at least one of nano-SiO2, talc, silica gel, and layered silicates; the saturated polysiloxane is selected from at least one of silicone oil, silicone resin, silicone rubber, and saturated polyhedral oligomeric silsesquioxanes; and the unsaturated polysiloxane polymer is selected from polymers of polyhedral oligomeric silsesquioxanes containing double bonds.

[0021] Preferably, the silicon-containing material and the ionic liquid polymer are mixed by physical doping, and / or the silicon-containing material and the ionic liquid polymer are connected by covalent bonds through copolymerization.

[0022] Wherein, when the silicon-containing precursor is selected from inorganic silicon compounds or saturated polysiloxanes, it is mixed with the ionic liquid polymer by physical doping; when the silicon-containing precursor is selected from unsaturated polysiloxanes (e.g., polyhedral oligomeric silsesquioxanes (POSS) containing double bonds), it is connected to the ionic liquid polymer (i.e., ionic liquid monomers containing double bonds) by copolymerization in a chemical covalent manner.

[0023] In a preferred embodiment, the saturated polyhedral oligomeric silsesquioxane is selected from formula (R 1 SiO 1.5 ) n At least one of the polyhedral oligomeric silsesquioxanes shown, wherein n = 8, 10 or 12, and R is selected from one of saturated hydrocarbon group, substituted saturated hydrocarbon group, saturated aryl group, and substituted saturated aryl group, and each R 1 Same or different.

[0024] In a further preferred embodiment, the polyhedral oligomeric silsesquioxane containing double bonds is selected from formula (R 2 SiO 1.5 ) n At least one of the polyhedral oligomeric silsesquioxanes shown, at least one R 2 Selected from unsaturated groups containing double bonds, the rest R 2 It is selected from alkyl, substituted alkyl, aryl or substituted aryl.

[0025] In a further preferred embodiment, in general formula (R) 2 SiO 1.5 ) n In: at least one R 2 Selected from The substituents shown are wherein R' and R'" are each independently selected from alkyl groups, preferably from C1 to C10 alkyl groups, more preferably from C1 to C5 alkyl groups; the remaining R 2 Alkyl groups selected from C1 to C10, preferably from C1 to C6; a = 0 or 1.

[0026] That is, the source (or precursor) of the silicon-containing material is selected from polyhedral oligomeric silsesquioxanes containing at least one double bond.

[0027] In a further preferred embodiment, the polyhedral oligomeric silsesquioxane containing double bonds is selected from 3-propyl acrylate-n-butylsilsesquioxane (n=8) and methacryloyloxypropylsilsesquioxane (C7H). 11 O2) n (SiO 1.5 ) n (n = 8, 10 or 12), Acryloyloxypropylsilsesquioxane (C6H9O2) n (SiO 1.5 ) n (n = 8, 10 or 12), allyl isobutylsilsesquioxane (C 31 H 68 O 12 Si8, n=8), vinyl isobutylsilsesquioxane (C 30 H 66 O 12 At least one of Si8, n=8).

[0028]

[0029] In a preferred embodiment, in the fabric-modified coating, the weight ratio of the ionic liquid polymer to the silicon-containing material is (0.5–40):1, preferably (1–30):1, more preferably (1.2–20):1, for example, 0.5:1, 1:1, 1.5:1, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, 6:1, 8:1, 10:1, 12:1, 15:1, 18:1, 20:1, 22:1, 25:1, 28:1, or 30:1.

[0030] In a further preferred embodiment, when the silicon-containing material is an unsaturated polysiloxane polymer, the weight ratio of the ionic liquid polymer to the silicon-containing material is (0.5–8):1, preferably (1–6):1, and more preferably (1.2–5):1; or, when the silicon-containing material is an inorganic silicon compound and / or a saturated polysiloxane, the weight ratio of the ionic liquid polymer to the silicon-containing material is (8–40):1, preferably (12–30):1, and more preferably (15–20):1.

[0031] The second objective of this invention is to provide a method for preparing a fabric modified coating, preferably used to prepare the fabric modified coating described in the first objective of this invention. The preparation method includes: mixing raw materials including the double-bonded ionic liquid and the silicon-containing precursor, and polymerizing them to obtain the fabric modified coating.

[0032] In a preferred embodiment, the silicon-containing precursor is selected from at least one of inorganic silicon compounds, saturated polysiloxanes, and unsaturated polysiloxanes.

[0033] In a further preferred embodiment, the inorganic silicon compound is selected from at least one of nano-SiO2, talc, silica gel, and layered silicates; the saturated polysiloxane is selected from at least one of silicone oil, silicone resin, silicone rubber, and saturated polyhedral oligomeric silsesquioxanes; and the unsaturated polysiloxane polymer is selected from polymers of polyhedral oligomeric silsesquioxanes containing double bonds.

[0034] In a preferred embodiment, the saturated polyhedral oligomeric silsesquioxane is selected from the general formula (R 1 SiO 1.5 ) n At least one of polyhedral oligomeric silsesquioxanes, wherein n = 8, 10 or 12, R 1 Selected from one of the following: alkyl group, substituted alkyl group, aryl group, and substituted aryl group, each R 1 Same or different.

[0035] In a further preferred embodiment, the unsaturated polyhedral oligomeric silsesquioxane is selected from the formula (R 2SiO 1.5 ) n At least one of the polyhedral oligomeric silsesquioxanes shown, wherein at least one R 2 Selected from unsaturated groups containing double bonds, the rest R 2 It is selected from one of alkyl, substituted alkyl, aryl, and substituted aryl.

[0036] In a further preferred embodiment, where the general formula is (R 2 SiO 15 ) n , where: at least one R 2 Selected from The substituents shown are wherein R' and R'" are each independently selected from alkyl groups, preferably from C1 to C10 alkyl groups, more preferably from C1 to C5 alkyl groups; the remaining R 2 Alkyl groups selected from C1 to C10, preferably from C1 to C6; a = 0 or 1.

[0037] That is, the silicon-containing precursor is selected from polyhedral oligomeric silsesquioxanes containing at least one double bond.

[0038] In a further preferred embodiment, when the silicon-containing compound precursor is selected from unsaturated polyhedral oligomeric silsesquioxanes, the unsaturated polyhedral oligomeric silsesquioxanes are selected from 3-propyl acrylate-n-butylsilsesquioxane and methacryloxypropylsilsesquioxane (C7H). 11 O2) n (SiO 1.5 ) n (n = 8, 10 or 12), Acryloyloxypropylsilsesquioxane (C6H9O2) n (SiO 1.5 ) n (n = 8, 10 or 12), allyl isobutylsilsesquioxane (C 31 H 68 O 12 Si8, n = 8, 10 or 12), vinyl isobutylsilsesquioxane (C 30 H 66 O 12 Si8, n = 8, 10 or 12) is at least one of them.

[0039] In a preferred embodiment, the weight ratio of the double-bonded ionic liquid to the silicon-containing precursor is 1:(0.05-5), preferably 1:(0.1-2), more preferably 1:(0.15-1), for example 1:0.05, 1:0.1, 1:0.2, 1:0.3, 1:0.4, 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, 1:1.2, 1:1.5, 1:1.8, 1:2, 1:2.2, 1:2.5, 1:2.8, 1:3, 1:3.2, 1:3.5, 1:3.8, 1:4, 1:4.5, or 1:5.

[0040] In a preferred embodiment, the raw material further contains a photoinitiator and a solvent.

[0041] In a further preferred embodiment, the photoinitiator is selected from phenylbis(2,4,6-trimethylbenzoyl)phosphorus chloride (TPO), ethyl 2,4,6-trimethylbenzoylphosphonate (TPO-L), and 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butanone (photoinitiator 369), 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylphenylacetone (photoinitiator 659), 1-hydroxy-cyclohexyl-phenyl ketone (photoinitiator 184), 2-methyl-1-[4-methylthio] At least one of the following: [[2-morpholino-1-propanone](photoinitiator 907), 2-isopropylthioxanthone (2,4 isomer mixture (ITX), ethyl 4-dimethylaminobenzoate (EDB), 1-hydroxycycloethyl benzophenone (photoinitiator 184), 2-hydroxy-2-methyl-1-phenyl-1-propanone (photoinitiator 1173), benzoin dimethyl ether (BDK), methyl o-benzoylbenzoate (OMBB), 4-chlorobenzophenone (CBP), and 4-phenylbenzophenone (PBZ).

[0042] In a further preferred embodiment, the photoinitiator is selected from at least one of TPO, photoinitiator 369, photoinitiator 659, and photoinitiator 184, and has the following structural formula:

[0043]

[0044] In a preferred embodiment, the amount of the photoinitiator is 0.1 to 5 wt%, preferably 0.5 to 2 wt%; wherein, the amount of the double-bonded ionic liquid, the silicon-containing precursor, the initiator, and the solvent is 100 wt%.

[0045] For example, the amount of the photoinitiator is 0.1 wt%, 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, 4.5 wt%, or 5 wt%, wherein the amount of the double-bonded ionic liquid, the silicon-containing precursor, the initiator, and the solvent is 100 wt%.

[0046] In a preferred embodiment, the raw material further includes a solvent.

[0047] In a further preferred embodiment, the solvent is an organic solvent, preferably at least one selected from DMSO, ethanol, THF, acetonitrile, and chloroform (trichloromethane).

[0048] In a further preferred embodiment, the weight ratio of the solvent to the total weight of the ionic liquid and the silicon-containing precursor is 2 to 20, preferably 3 to 15, more preferably 4 to 10, for example 2, 4, 6, 8, 10, 12, 14, 16, 18 or 20.

[0049] For example, the amount of solvent used can be 100 to 150 mL.

[0050] In a preferred embodiment, the polymerization is carried out under ultraviolet irradiation, preferably for 1 to 12 hours, more preferably for 2 to 4 hours, for example 1 hour, 2 hours, 3 hours, 4 hours, 5 hours, 6 hours, 7 hours, 8 hours, 9 hours, 10 hours, 11 hours or 12 hours.

[0051] In a further preferred embodiment, the irradiation distance is 1 to 10 cm, preferably 2 to 4 cm, for example 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm or 10 cm.

[0052] The irradiation distance refers to the distance between the ultraviolet light source and the fabric, and the ultraviolet light source is preferably a surface light source.

[0053] In a further preferred embodiment, the irradiance is 0.05–2 mW / cm². 2 0.10~0.60mW / cm 2 Preferably, it is 0.15–0.30 mW / cm². 2 For example, 0.05mW / cm 2 0.08mW / cm 2 0.1mW / cm 2 0.15mW / cm 2 0.25mW / cm 2 0.3mW / cm 2 0.35mW / cm 2 0.4mW / cm 20.45mW / cm 2 0.5mW / cm 2 0.55mW / cm 2 0.6mW / cm 2 0.8mW / cm 2 1mW / cm 2 1.2mW / cm 2 1.5mW / cm 2 1.8mW / cm 2 or 2mW / cm 2 .

[0054] The third objective of this invention is to provide the application of the fabric modified coating described in the first objective of this invention or the fabric modified coating obtained by the preparation method described in the second objective of this invention in fabrics, preferably in polyester fabrics, and more preferably the polyester fabrics include non-flame-retardant polyester fabrics and / or flame-retardant polyester fabrics.

[0055] Wherein, the non-flame-retardant polyester refers to polyester fabric that has not been modified by flame retardants, and the flame-retardant polyester refers to polyester fabric modified by flame retardants.

[0056] Preferably, the polyester is at least one selected from polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polylactic acid ester (PLA), polyhydroxybutyrate (PHB), polycaprolactone (PCL), polybutylene succinate (PBS), polypropylene glutarate (PPG), and polyethylene furanate (PEF).

[0057] The fourth objective of this invention is to provide a modified fabric comprising a fabric matrix and a fabric modification coating loaded on the outer surface of the fabric matrix, wherein the fabric modification coating is selected from the fabric modification coating described in the first objective of this invention or the fabric modification coating obtained by the preparation method described in the second objective of this invention.

[0058] In a preferred embodiment, the fabric matrix is ​​selected from polyester fabrics, such as non-flame-retardant polyester and / or flame-retardant polyester.

[0059] Preferably, the polyester is at least one selected from polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polylactic acid ester (PLA), polyhydroxybutyrate (PHB), polycaprolactone (PCL), polybutylene succinate (PBS), polypropylene glutarate (PPG), and polyethylene furanate (PEF).

[0060] In a preferred embodiment, the weight percentage (or grafting rate) of the fabric-modified coating to the fabric matrix is ​​3 to 30 wt%, preferably 5 to 20 wt%, for example 3 wt%, 4 wt%, 6 wt%, 8 wt%, 10 wt%, 12 wt%, 14 wt%, 16 wt%, 18 wt%, 20 wt%, 22 wt%, 24 wt%, 26 wt%, 28 wt%, or 30 wt%.

[0061] The fifth objective of this invention is to provide a method for preparing the modified fabric described in the fourth objective of this invention, comprising: obtaining a fabric substrate, and forming the fabric modified coating on the outer surface of the fabric substrate using the preparation method described in the second objective of this invention.

[0062] In a preferred embodiment, the method for preparing the modified fabric includes: (1) mixing the double-bonded ionic liquid, the silicon-containing precursor, the photoinitiator and the solvent to obtain a modified mixture; (2) coating the modified mixture onto the fabric substrate or impregnating (or immersing) the fabric substrate in the modified mixture; and (3) polymerizing under ultraviolet light to obtain the modified fabric.

[0063] In a further preferred embodiment, when step (2) is performed by impregnation, rolling is performed after impregnation. Preferably, the liquid carrying capacity after rolling is 10 to 500 wt%, more preferably 50 to 200 wt%, for example 50 wt%, 60 wt%, 70 wt%, 80 wt%, 90 wt%, 100 wt%, 110 wt%, 120 wt%, 130 wt%, 140 wt%, 150 wt%, 160 wt%, 170 wt%, 180 wt%, 190 wt%, or 200 wt%.

[0064] In a preferred embodiment, the fabric is washed after the polymerization, preferably first with a reaction solvent (i.e., the solvent described in step (1)) and then with water.

[0065] In a preferred embodiment, the fabric substrate is optionally pretreated, the pretreatment comprising: immersing the fabric in an alkaline solvent at 70-100°C for 20-60 minutes, then washing it sequentially with detergent (e.g., household detergent), organic solvent (e.g., alcohol solvent), and water, and finally drying it.

[0066] The purpose of pretreatment is to clean impurities such as oil from the fabric surface; otherwise, it will affect the grafting and loading of surface polymers and silicon-containing substances.

[0067] In a preferred embodiment, the fabric matrix is ​​selected from polyester fabrics, preferably from non-flame-retardant polyester fabrics and / or flame-retardant polyester fabrics.

[0068] The polyester is selected from at least one of polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polylactic acid ester (PLA), polyhydroxybutyrate (PHB), polycaprolactone (PCL), polybutylene succinate (PBS), polypropylene glutarate (PPG), and polyethylene furanate (PEF).

[0069] The endpoints and any values ​​of the ranges disclosed in this invention are not limited to the precise ranges or values; these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein. In the following, various technical solutions can, in principle, be combined with each other to obtain new technical solutions, which should also be considered as specifically disclosed herein.

[0070] Compared with the prior art, the present invention has the following beneficial effects: the fabric modified coating can be used on polyester fabrics and / or flame-retardant polyester fabrics, and has good flame retardancy, anti-dripping properties, smoke suppression, and fastness or durability. Attached Figure Description

[0071] Figure 1 SEM and SEM-EDS images of Comparative Example 1, Example 2 and Example 6.

[0072] Figure 2 The images are FTIR plots for Comparative Example 1, Example 2, and Example 6. Detailed Implementation

[0073] The present invention will now be described in detail with reference to specific embodiments. It should be noted that the following embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present invention are still within the scope of protection of the present invention.

[0074] It should also be noted that the various specific technical features described in the following embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the various possible combinations will not be described separately in this invention.

[0075] Furthermore, various embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention. The resulting technical solutions are part of the original disclosure of this specification and also fall within the protection scope of the present invention.

[0076] Unless otherwise specified, the raw materials used in the examples and comparative examples are all disclosed in the prior art, such as those that can be directly purchased or prepared according to the preparation methods disclosed in the prior art.

[0077] The sample testing and characterization methods used in this invention are as follows:

[0078] 1. Scanning Electron Microscopy-X-ray Photoelectron Spectroscopy (SEM-EDS)

[0079] The surface morphology of the samples was observed using a scanning electron microscope (SEM, JSM-7500F, NEC Corporation) at 5 kV. The elemental composition and distribution on the sample surface were determined using an energy dispersive spectroscopy (EDS, X-MaxN Oxford Instruments Technology Ltd.). Before testing, the samples were dried in a vacuum drying oven at 60°C for 6 hours, followed by gold sputtering treatment.

[0080] 2. Fourier Transform Infrared Absorption Spectroscopy (FTIR)

[0081] The chemical structure and characteristic functional groups of the flame retardant were determined using a Fourier Transform Infrared Spectrometer (FTIR, Perseus TG 209F1, Netzsch, Germany) in ATR mode. The spectral acquisition range was 4000-400 cm⁻¹. -1 The scanning frequency is 32 times.

[0082] 3. Inductively Coupled Plasma Emission Spectroscopy (ICP)

[0083] Elemental content was detected using an inductively coupled plasma spectrometer (ICP, Agilent). Qualitative and quantitative elemental analysis was performed by capturing the characteristic radiation emitted when molecules of various analytes in the excited state return to the ground state. The axial observation detection mode was selected.

[0084] 4. Cone Calorimetry Test

[0085] Cone calorimetry is an important testing method for evaluating the combustion performance of polymers. It provides various data parameters, such as heat release rate (HRR), peak heat release rate (pHRR), and total heat release (THR). The test was conducted using a cone calorimeter (CONE, Fire Testing Technology Ltd, UK) according to ISO 5660-1-2002, "Cone calorimetry".

[0086] 5. Vertical Burning Test (UL-94)

[0087] The vertical burning test involves burning standard strips according to national standards, and the flammability rating is evaluated based on the flame propagation rate. A CZF-3 testing instrument manufactured by Nanjing Jiangning Analytical Instrument Factory was used for the test. The flame-retardant properties of the flame-retardant modified polyester were evaluated according to GB / T 5455-2014 "Determination of Vertical Damage Length, Afterflame and Residual Flame Time of Textiles".

[0088] 6. Limiting Oxygen Index (LOI) Test

[0089] The limiting oxygen index (LOI) test is a method used to evaluate the flammability of materials. The LIO tester from Dynisco, USA, was used to evaluate the flame-retardant properties of flame-retardant modified polyester according to GB / T 5454-1997 "Textiles - Tests for Flammability - Oxygen Index Method".

[0090] 7. The formula for calculating the grafting rate of polymer on the fabric surface is shown in Equation (1).

[0091]

[0092] In the formula, m1 is the mass of the modified fabric, and m0 is the original mass of the fabric.

[0093] 8. Liquid carrying capacity, also known as roll-in rate or roll-out rate, is a measure of the amount of liquid carried by the fabric after roll-in.

[0094] The calculation formula is:

[0095] Liquid loading rate = (Weight of fabric after rinsing - Weight of fabric before rinsing) / Weight of fabric before rinsing × 100%

[0096] Main experimental reagents

[0097]

[0098]

Example 1

[0099] Preparation of polyionic liquid / nano-SiO2 light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, 5.58 mL of 30 wt% nano-silica aqueous solution (density 1.22 g / mL), and 100 mL of DMSO were mixed to obtain a modified mixture.

[0100] Commercially available polyester fabric (PET) was selected as the matrix material. The polyester fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0101] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 103.2 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent DMSO, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 14.83 wt%.

[0102]

Example 2

[0103] Preparation of polyionic liquid / nano-SiO2 light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, 11.16 mL of 30 wt% nano-silica aqueous solution, and 100 mL of DMSO were mixed to obtain a modified mixture.

[0104] Commercially available polyester fabric (PET) was selected as the matrix material. The polyester fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0105] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 90.4 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent (DMSO), the solvent was dried in a fume hood, then washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 12.28 wt%.

[0106] The modified fabric was subjected to ICP testing. The coating contained P and Si, with mass percentages of 0.8089 wt% and 0.1784 wt%, respectively. After conversion, the mass ratio of ionic liquid polymer to silica in the coating was approximately 7.7:0.38:20:1.

[0107]

Example 3

[0108] Preparation of polyionic liquid / nano-SiO2 light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, 22.32 mL of 30% nano-silica aqueous solution, and 100 mL of DMSO were mixed to obtain a modified mixture.

[0109] Commercially available polyester fabric (PET) was selected as the matrix material. The polyester fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0110] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 102.5 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 16.15 wt%.

[0111]

Example 4

[0112] Preparation of polyionic liquid / nano-SiO2 light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, 27.90 mL of 30 wt% nano-silica aqueous solution, and 100 mL of DMSO were mixed to obtain a modified mixture.

[0113] Commercially available polyester fabric (PET) was selected as the matrix material. The polyester fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0114] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 94.6 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 13.43 wt%.

[0115]

Example 5

[0116] Preparation of polyionic liquid / POSS light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate (IL), 2.5 g of 3-propyl acrylate-n-butylsilsesquioxane (AB POSS), and 100 mL of DMSO were mixed to obtain a modified mixture.

[0117] Commercially available polyester fabric (PET) was selected as the matrix material. The PET fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0118] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 80 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent (DMSO), the solvent was dried in a fume hood, then washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 10.95 wt%.

[0119]

Example 6

[0120] Preparation of polyionic liquid / POSS light-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, 12.5 g of 3-propyl acrylate-n-butylsilsesquioxane (ABPOSS) and 100 mL of DMSO were mixed to obtain a modified mixture.

[0121] Commercially available polyester fabric (PET) was selected as the matrix material. The PET fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0122] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 96.5 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain a modified fabric with a grafting rate of 14.07 wt%.

[0123] The modified fabric was subjected to ICP testing. Only the coating and the matrix contained P and silicon, which were 0.9628 wt% and 0.5953 wt%, respectively. After conversion, the mass ratio of ionic liquid polymer to AB POSS in the coating was 9.16:3.8≈2.41:1.

[0124] Experiments revealed that the durability of Examples 5-6 was superior to that of Examples 1-4. Specifically, Examples 5-6 still exhibited excellent anti-dripping properties, smoke suppression, and flame retardancy after multiple cleanings.

[0125]

Example 7

[0126] Preparation of polyionic liquid / POSS photo-irradiated modified polyester fabric: 2.5g of photoinitiator 369, 6.25g of ionic liquid 1-vinyl-3-butylimidazolium tetrafluoroborate, 12.5g of 3-propyl acrylate-n-butylsilsesquioxane (ABPOSS), and 50mL of DMSO were mixed to obtain a modified mixture.

[0127] Commercially available polyester fabric (PET) was selected as the matrix material. The PET fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0128] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 110.5 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.3 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain the modified fabric. This modified fabric exhibits excellent anti-dripping properties, smoke suppression, and flame retardancy.

[0129]

Example 8

[0130] Preparation of polyionic liquid / POSS photo-irradiated modified polyester fabric: 1.8g photoinitiator 659, 12.5g ionic liquid 1-vinyl-3-butylimidazolium tetrafluoroborate, 1.3g 3-propyl acrylate-n-butylsilsesquioxane (ABPOSS), and 150mL DMSO were mixed to obtain a modified mixture.

[0131] Commercially available polyester fabric (PET) was selected as the matrix material. The PET fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0132] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 124.5 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 4 cm and an irradiation intensity of 0.6 mW / cm². 2 The reaction was carried out at room temperature for 4 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain the modified fabric. This modified fabric exhibits excellent anti-dripping properties, smoke suppression, and flame retardancy.

[0133] Comparative Example 1

[0134] Preparation of polyionic liquid photo-irradiated modified polyester fabric: Preparation of polyionic liquid photo-irradiated modified polyester fabric: 2.5 g of TPO, 12.5 g of ionic liquid 1-vinyl-3-butylimidazolium hexafluorophosphate, and 100 mL of DMSO were mixed to obtain a modified mixture.

[0135] Commercially available polyester fabric (PET) was selected as the matrix material. The polyester fabric was first pretreated by immersing it in a NaOH solution (concentration of 20g / L) at 90℃ for 20 minutes, then washing it once with detergent and once with ethanol, and finally washing it with deionized water and drying it at 100℃.

[0136] The pretreated polyester fabric was then impregnated with the modified mixture and rolled on a benchtop rolling mill, resulting in a liquid loading of 81 wt%. The fabric containing the modified mixture was then subjected to polymerization grafting under ultraviolet light at a distance of 2 cm and an irradiation intensity of 0.15 mW / cm². 2 The reaction was carried out at room temperature for 3 hours. After the reaction, the fabric was washed twice with the reaction reagent, dried in a fume hood, washed three times with deionized water, and dried under vacuum at 100°C to obtain a PIL grafting rate of 11.04 wt%.

[0137] [Experiment Example 1] Flame retardant performance testing

[0138] The flame retardant properties of the fabrics obtained in the above embodiments and comparative examples were tested, and the results are shown in Tables 1 and 2 below:

[0139] Table 1

[0140]

[0141] As can be seen from Table 1:

[0142] (1) In Example 2 of the present invention, after modification with ionic liquid polymer and silica coating, it has anti-drip properties. Although Example 1 still has dripping, compared with unmodified PET and Comparative Example 1, the number of dripping times within 10s is significantly reduced, and the anti-drip properties are also improved.

[0143] (2) The damage length of Example 2 of this application is significantly lower than that of unmodified PET.

[0144] (3) Compared with unmodified PET and Comparative Example 1, Example 6 of the present invention has anti-drip properties after being modified by ionic liquid polymer and polyPOSS coating; although Example 5 still has dripping, the number of dripping within 10s is significantly reduced compared with unmodified PET and Comparative Example 1, and the anti-drip properties are also improved.

[0145] (4) The ratings of Examples 2 and 6 of the present invention reached V-0 after modification with ionic liquid polymer and silicon-containing material coating.

[0146]

Experimental Example 2

[0147] (1) The modified PET fabrics obtained in Comparative Example 1, Example 1 and Examples 3-4 were subjected to cone calorimetry (CONE) tests, and the results are shown in Table 2.

[0148] Table 2

[0149]

[0150] As shown in Table 1, compared with Comparative Example 1, the PHRR (peak heat release rate) and THR (total heat release) of the Examples also decreased significantly during the fabric combustion process. This indicates that the composite modification of PIL and nano-SiO2 delayed the heat release during PET combustion, which is beneficial to reducing the fire risk of fabric combustion. Compared with Comparative Example 1, the char residue of the Examples increased, indicating that the composite modification of PIL and nano-SiO2 promoted the char formation of the matrix and reduced the heat release rate.

[0151] (2) The modified PET fabrics obtained in Comparative Example 1 and Examples 5-6 were subjected to cone calorimetry (CONE) tests, and the results are shown in Table 3.

[0152] Table 3

[0153]

[0154] In Table 3, compared with Comparative Example 1 and PET, the pHRR of the Examples was significantly lower, indicating that the PIL-POSS composite modification delayed the heat release during PET combustion, which is beneficial to reducing the fire risk of fabric combustion. Compared with PET and Comparative Example 1, the char residue of the Examples was increased, indicating that the PIL-POSS composite modification promoted matrix charring and reduced the heat release rate.

[0155] [Experiment Example 3] Scanning Electron Microscopy - X-ray Photoelectron Spectroscopy

[0156] The modified fabrics obtained from Comparative Example 1 (Figure a), Example 2 (Figure b), and Example 6 (Figure c) were subjected to scanning electron microscopy-X-ray photoelectron spectroscopy (SEM-EDS) analysis. The SEM and SEM-EDS images are shown below. Figure 1 As shown. Series 1 [a1 / b1 / c1] represents the fabric structure under low magnification SEM; Series 2 [a2 / b2 / c2] represents the surface morphology of a single fiber filament under high magnification; Series 3 [a3 / b3 / c3] represents the surface element composition of a single fiber filament obtained by EDS.

[0157] Depend on Figure 1 It can be seen that, compared to the original PET fibers and fabrics, while maintaining the original fabric's structure, the modified samples exhibit a significant coating layer on the fiber surface, demonstrating the successful loading of polymers and composite modifiers onto the fiber surface. From... Figure 1 The EDS image in (a3) ​​shows the presence of ionic liquid characteristic elements P and F on the surface of the fabric in Comparative Example 1, indicating the presence of characteristic elements P and F of the ionic liquid, namely 1-vinyl-3-butylimidazolium hexafluorophosphate, proving that PIL has been successfully grafted onto PET. Example 1 showed an increase in Si element on its surface (…). Figure 1 (b3) further demonstrates that nano-SiO2 and PIL are grafted onto the fabric surface. Si elements also appeared on the surface in Example 6. Figure 1 (c3)) The presence of Si as a characteristic element of POSS also proves that POSS and IL were successfully copolymerized and grafted onto the PET surface.

[0158]

Experiment Example 4

[0159] Infrared detection was performed on the modified fabrics obtained from PET, Comparative Example 1, Example 2, and Example 6, and the results are as follows: Figure 2 As shown (the dotted lines in the figure represent 2958cm from left to right), -1 1042cm -1 932cm -1 720cm -1 ).

[0160] Depend on Figure 2It can be seen that the PIL-modified sample at 1042 cm⁻¹ -1 The characteristic peak of CN stretching vibration was observed. Both PIL-modified and nano-SiO2 / POSS-modified polymer fabrics showed a peak at 932 cm⁻¹. -1 The appearance of a vibrational absorption peak corresponds to the stretching vibration of the Si-O bond in the SiO2 and POSS structures, and is at 2958 cm⁻¹. -1 The significantly increased intensity of the stretching vibration peak at the OC=O bond indicates an increased ester content in the sample, primarily due to the contribution of the ester group in the R side group of the POSS structure. Furthermore, the grafting of POSS reduces the intensity of the CH bond and the 1711 cm⁻¹ peak. -1 The peak intensity of the C=N double bond stretching vibration further proves that POSS was successfully copolymerized and grafted onto PET with PIL.

[0161] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

Claims

1. A fabric modifying coating characterized in that, The fabric modification coating comprises an ionic liquid polymer and a silicon-containing substance, the ionic liquid polymer is a polymer of a double-bond-containing ionic liquid selected from at least one of double-bond-containing imidazole ionic liquids, and a precursor of the silicon-containing substance is selected from a polyhedral oligomeric silsesquioxane containing at least one double bond.

2. The fabric-modifying coating of claim 1, wherein, The double-bond-containing ionic liquid is selected from at least one of compounds represented by formula (1): Formula (1) In formula (1), either one of R1, R2 is selected from a double bond-containing unsaturated substituent, the other is selected from a saturated substituent, A - represents an anion.

3. The fabric-modifying coating of claim 2, wherein, In formula (1), either one of R1, R2 is selected from alkenyl, the other is selected from alkyl, A - one of halogen anion, acetate anion, halogen-substituted acetate anion, hexafluorophosphate anion, sulfonate anion, tetrafluoroborate anion, dicyanamide anion.

4. The fabric-modifying coating of claim 1, wherein, The double-bond-containing ionic liquid is selected from at least one of compounds represented by formula (2) to formula (3): In formula (2) to formula (3), R1 is selected from C1-C20 alkyl, A - selected from Br - , Cl - , CH3COO - , C3F7COO - , CF3COO - , BF4 - , PF6 - , CF3SO3 - , C4F9SO3 - or N(CN)2 - .

5. The fabric-modifying coating of any of claims 1-4, wherein, In the fabric modification coating, the weight ratio of the ionic liquid polymer to the silicon-containing substance is (0.5-40):

1.

6. The fabric-modifying coating of claim 5, wherein, In the fabric modification coating, the weight ratio of the ionic liquid polymer to the silicon-containing substance is (1-30):

1.

7. A method for preparing a fabric-modifying coating for use in the fabric-modifying coating of any one of claims 1 to 6, characterized in that, The preparation method comprises: mixing raw materials including the double-bond-containing ionic liquid and a precursor of the silicon-containing substance, and performing polymerization to obtain the fabric modification coating; and the precursor of the silicon-containing substance is selected from a polyhedral oligomeric silsesquioxane containing at least one double bond.

8. The method of claim 7, wherein the fabric modifying coating is prepared by, The weight ratio of the double-bond-containing ionic liquid to the precursor of the silicon-containing substance is 1:(0.05-5).

9. The method of claim 7, wherein the fabric modifying coating is prepared by, The weight ratio of the double-bond-containing ionic liquid to the precursor of the silicon-containing substance is 1:(0.1-2).

10. The method of claim 7, wherein the fabric modifying coating is prepared by, The raw materials further contain a photoinitiator and a solvent.

11. The method of claim 10, wherein the fabric modifying coating is prepared by, The photoinitiator is selected from at least one of phenyl bis(2,4,6-trimethylbenzoyl) phosphinic chloride, 2,4,6-trimethylbenzoyl phosphinic acid ethyl ester, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl) butanone, 2-hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone, 1-hydroxy-cyclohexyl-phenyl ketone, 2-methyl-1-[4-methylthiophenyl]-2-morpholin-1-propanone, 2-isopropylthioxanthone (2,4 isomer mixture), 4-dimethylamino-benzoic acid ethyl ester, 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, benzoin dimethyl ether, methyl o-benzoylbenzoate, 4-chlorobenzophenone, and 4-phenylbenzophenone.

12. The method of making a fabric-modifying coating of claim 10, wherein, The amount of the photoinitiator is 0.1-5 wt%; wherein the double-bond-containing ionic liquid, the precursor of the silicon-containing substance, the initiator, and the solvent are 100 wt%.

13. The method of making a fabric-modifying coating of claim 10, wherein, The amount of the photoinitiator is 0.5-2 wt%; wherein the double-bond-containing ionic liquid, the precursor of the silicon-containing substance, the initiator, and the solvent are 100 wt%.

14. The preparation method of the fabric modification coating according to any one of claims 7-13, wherein, The polymerization is carried out under ultraviolet irradiation at a distance of 1-10 cm and an irradiation light intensity of 0.05-2 mW / cm 2 .

15. The preparation method of the fabric modification coating according to claim 14, wherein, the polymerization is performed under ultraviolet irradiation for 1-12 h; and / or, the irradiation distance is 2-4 cm; and / or, The irradiation light intensity is 0.10-0.60 mW / cm 2 .

16. The fabric modification coating according to any one of claims 1-6 or obtained by the preparation method according to any one of claims 7-15, for use in a fabric.

17. Use according to claim 16, characterized in that, For use in a polyester fabric.

18. The use according to claim 17, characterized in that, The polyester fabric comprises a non-flame-retardant polyester fabric and / or a flame-retardant polyester fabric.

19. A modified fabric, characterized by, The modified fabric comprises a fabric substrate and a fabric modification coating loaded on the outer surface of the fabric substrate, wherein the fabric modification coating is selected from the fabric modification coating according to any one of claims 1-6 or obtained by the preparation method according to any one of claims 7-15.

20. A method of making the modified fabric of claim 19, wherein, The preparation method comprises obtaining a fabric substrate and forming a fabric modification coating on the outer surface of the fabric substrate by the preparation method according to any one of claims 7-15.

21. The method of claim 20, wherein the modified fabric is prepared by, The preparation method of the modified fabric comprises: (1) mixing the double-bond-containing ionic liquid, the silicon-containing substance precursor, the photoinitiator and the solvent to obtain a modification mixture; (2) coating the modification mixture on the fabric substrate or immersing the fabric substrate in the modification mixture; and (3) polymerizing under ultraviolet light to obtain the modified fabric.

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