A flame-retardant antibacterial scratch-resistant water-based resin microfiber fleece and a preparation method thereof

Abstract

The present application relates to the technical field of microfiber flannelette, and particularly relates to a flame-retardant, antibacterial and scratch-resistant water-based resin microfiber flannelette and a preparation method thereof, comprising islanded superfine fiber non-woven fabric, a reinforcing layer is arranged on the upper and lower surfaces of the islanded superfine fiber non-woven fabric through polyurethane adhesive bonding, and a resin body layer is arranged on the outer surface of the reinforcing layer; the reinforcing layer is formed by knitting of flax fiber yarn and aramid fiber yarn according to a weight ratio of 1:1; the thickness of the islanded superfine fiber non-woven fabric is 0.4-0.5 mm; the thickness of the reinforcing layer is 0.3-0.4 mm; and the thickness of the resin body layer is 0.2-0.3 mm. The flame-retardant, antibacterial and scratch-resistant water-based resin microfiber flannelette is arranged symmetrically on the upper and lower surfaces of the islanded superfine fiber non-woven fabric, and the strength stability of the microfiber flannelette is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of microfiber fleece, and particularly relates to a flame-retardant, antibacterial and scratch-resistant water-based resin microfiber fleece and a preparation method thereof. BACKGROUND

[0002] In addition to meeting various quality requirements such as durability and softness, modern consumers also expect fabrics to meet appearance style and comfort requirements, and therefore, traditional fleece knitted fabrics need to be optimized to meet these higher requirements.

[0003] Sea-island ultrafine fiber is a kind of ultrafine fiber, which is divided into two categories of sea-island filament and sea-island short fiber (including fixed island type and non-fixed island type). Sea-island filament is generally used to produce suede fabric through weaving and knitting, and is used for clothing production; sea-island short fiber is usually used to produce thick imitation leather fabric through needle punching non-woven, and is mainly used for shoemaking, sofa, automotive interior, clothing.

[0004] The existing microfiber fleece prepared by sea-island filament has poor antibacterial performance, and the product has poor antibacterial performance, poor flame-retardant coordination, poor water resistance, poor scratch resistance, and poor water resistance and high-temperature resistance, which further limits the use efficiency of the product. SUMMARY

[0005] In view of the defects of the prior art, the present application aims to provide a flame-retardant, antibacterial and scratch-resistant water-based resin microfiber fleece and a preparation method thereof to solve the problems in the background art.

[0006] The technical problem of the present application is solved by the following technical scheme:

[0007] The present application provides a flame-retardant, antibacterial and scratch-resistant water-based resin microfiber fleece, which comprises a fixed island ultrafine fiber non-woven fabric, a reinforcing layer is arranged on the upper and lower surfaces of the fixed island ultrafine fiber non-woven fabric through polyurethane adhesive bonding, and a resin body layer is arranged on the outer surface of the reinforcing layer.

[0008] The reinforcing layer is formed by interlaced knitting of flax fiber filaments and aramid fiber yarns in a weight ratio of 1:1.

[0009] The thickness of the fixed island ultrafine fiber non-woven fabric is 0.4-0.5mm; the thickness of the reinforcing layer is 0.3-0.4mm; and the thickness of the resin body layer is 0.2-0.3mm.

[0010] Preferably, the preparation method of the fixed island ultrafine fiber non-woven fabric is as follows: 45-55 parts by weight of fixed island type sea-island fiber and 75-85 parts by weight of modified nylon filament are opened, opened, formed into a web and pre-needled to form a fixed island ultrafine fiber non-woven fabric, the fineness of the fixed island type sea-island fiber is 1.5-6.5dtex, the island number is 37 islands, the sea component of the fixed island type sea-island fiber is water-soluble polyester WSPET, and the island component is PET.

[0011] Preferably, the preparation method of the modified spandex yarn is:

[0012] By weight parts, 75-85 parts of polyurethane particles, 10-15 parts of modifier, 1-3 parts of polyvinylpyrrolidone and 2-4 parts of silane coupling agent KH560, 4-7 parts of flame retardant, 4-7 parts of antibacterial agent are blended and treated, and then melt spinning treatment is carried out, the melt spinning temperature is 275℃, the spinning speed is 2700m / min, the jet metering pump supply is 24g / min, the modified spandex yarn is obtained; the flame retardant is magnesium hydroxide; the antibacterial agent is nano silver powder.

[0013] Preferably, the preparation method of the modifier is:

[0014] S01: The nano modified filler, a sodium silicate solution with a mass fraction of 6%, and a chitosan solution with a mass fraction of 4-5% are uniformly mixed and ball milled according to a weight ratio of (3-5):2:(4-7), the ball milling speed is 1000r / min, the ball milling time is 1h, after the ball milling is completed, the modified filler liquid is obtained;

[0015] S02: By weight parts, 5-8 parts of modified filler liquid, 2-5 parts of yttrium nitrate solution with a mass fraction of 2-5%, 1-3 parts of silicon carbide whisker and 2-3 parts of carboxymethyl cellulose are blended and stirred, after the stirring is completed, suction filtration and drying are carried out, and the modifier is obtained.

[0016] Preferably, the stirring speed of the blending and stirring treatment is 450-550r / min, the stirring time is 30-40min, and the stirring temperature is 50-55℃.

[0017] Preferably, the preparation method of the nano modified filler is:

[0018] By weight parts, 3-6 parts of flaky talc powder, 1-3 parts of nano silicon sol are added to 5-8 parts of sodium dodecylbenzenesulfonate solution, then 2-4 parts of silicon powder and 1-2 parts of citric acid are added, ball milling is carried out fully, the ball milling speed is 1500r / min, the ball milling time is 2h, and then water washing, suction filtration and drying are carried out, and the nano modified filler is obtained.

[0019] Preferably, the mass fraction of the sodium dodecylbenzenesulfonate solution is 2-5%.

[0020] Preferably, the preparation method of the resin body layer is:

[0021] The water-based resin body is coated on the reinforcing layer, and then setting treatment is carried out at a temperature of 115℃ for 2-3s, and after the treatment is completed, the resin body layer is obtained;

[0022] The preparation method of the water-based resin body is:

[0023] S101: by weight parts, 4-7 parts of silane coupling agent KH550, 20-25 parts of deionized water and 10-15 parts of ethanol solvent are uniformly blended to obtain a medium body;

[0024] S102: the nano mica powder is preheated at 60-65 DEG C for 10-15 min to obtain a preheated nano mica powder;

[0025] by weight parts, 3-5 parts of preheated nano mica powder, 10-15 parts of medium body are first stirred and mixed uniformly, then 5-8 parts of acrylic resin, 2-4 parts of 2-5% mass fraction lanthanum chloride solution and 5-8 parts of curing agent are added and fully blended to obtain a water-based resin body.

[0026] Preferably, the acrylic resin is a hydroxyl acrylic resin with a hydroxyl value of 120 mgKOH / g and a glass transition temperature of 45-50 DEG C, and the curing agent is an HDI curing agent.

[0027] The application also provides a preparation method of the flame-retardant, antibacterial and scratch-resistant water-based resin microfiber fleece, which comprises the following steps: bonding a reinforcing layer to the islanded microfiber non-woven fabric through polyurethane glue, and then coating the outer surface of the reinforcing layer with the water-based resin body to form a resin body layer, so that the flame-retardant, antibacterial and scratch-resistant water-based resin microfiber fleece is obtained.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] The application discloses flame-retardant antibacterial scratch-resistant water-based resin microfiber velvet, which is characterized by the following steps: the resin layer, the reinforcing layer and the symmetrical setting of the island-shaped superfine fiber non-woven fabric are arranged on the upper and lower sides; the island-shaped superfine fiber non-woven fabric is prepared by using island-shaped sea-island fibers and modified spandex as raw materials through the processes of opening, cotton opening, netting and pre-needling; the reinforcing layer is formed by flax fiber and aramid fiber yarn through warp knitting according to the weight ratio of 1:1; the strength stability of the flame-retardant antibacterial scratch-resistant water-based resin microfiber velvet is optimized; the modified spandex is prepared by mixing polyurethane particles, modifiers, polyvinylpyrrolidone, silane coupling agent KH560, flame retardants and antibacterial agents; the flame-retardant and antibacterial properties of the product are enhanced by optimizing the mixing of the flame retardants and the antibacterial agents; the mixed modifier is prepared by mixing nano-modified fillers, sodium silicate solution and chitosan solution; the yttrium nitrate solution, silicon carbide whiskers and carboxymethyl cellulose are mixed and stirred; the yttrium nitrate solution is used to mix the whisker structure, which is distributed in the system, and the nano-modified fillers are added together; the nano-modified fillers are prepared by mixing flaky talc powder, nano-silica sol, sodium dodecylbenzenesulfonate solution, silicon powder and citric acid; the flaky talc powder is used to fill the system structure together with the silicon powder; the mixed carbonized silicon whiskers and carboxymethyl cellulose are used to adjust and mix; the antibacterial and flame-retardant properties of the product are further improved; the water resistance, scratch resistance, water resistance and high-temperature resistance of the product are further improved; the resin layer is prepared by coating the water-based resin on the reinforcing layer; the water-based resin is prepared by mixing silane coupling agent KH550, deionized water and ethanol solvent to obtain a medium; the nano-mica powder is preheated and then mixed with the medium; the flaky nano-mica powder is inserted into the system to optimize the performance stability of the cloth system; the acrylic resin, lanthanum chloride solution with a mass fraction of 2-5% and curing agent are further mixed to form the resin layer; the comprehensive performance of the product is optimized by the cooperation of the resin layer, the reinforcing layer and the island-shaped superfine fiber non-woven fabric. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The layered structure of the application is shown in the figure. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0032] The fire-retardant antibacterial scratch-resistant water-based resin microfiber fleece of the embodiment comprises a fixed-island superfine fiber non-woven fabric 1, and a reinforcing layer 2 is arranged on the upper and lower surfaces of the fixed-island superfine fiber non-woven fabric 1 through polyurethane adhesive bonding, and a resin body layer 3 is arranged on the outer surface of the reinforcing layer 2;

[0033] The reinforcing layer 2 is formed by warp knitting of flax fiber yarn and aramid fiber yarn according to a weight ratio of 1:1;

[0034] The thickness of the fixed-island superfine fiber non-woven fabric 1 is 0.4-0.5mm; the thickness of the reinforcing layer 2 is 0.3-0.4mm; and the thickness of the resin body layer 3 is 0.2-0.3mm.

[0035] The preparation method of the fixed-island superfine fiber non-woven fabric 1 of the embodiment is as follows: 45-55 parts by weight of fixed-island type sea-island fibers and 75-85 parts by weight of modified spandex yarn are taken as raw materials to form fixed-island superfine fiber non-woven fabrics through opening, opening, webbing and pre-needling, respectively, the fineness of the fixed-island type sea-island fibers is 1.5-6.5dtex, the island number is 37 islands, the sea component of the fixed-island type sea-island fibers is water-soluble polyester WSPET, and the island component is PET.

[0036] The preparation method of the modified spandex yarn of the embodiment is as follows:

[0037] 75-85 parts by weight of polyurethane particles, 10-15 parts by weight of a modifier, 1-3 parts by weight of polyvinylpyrrolidone, 2-4 parts by weight of silane coupling agent KH560, 4-7 parts by weight of a flame retardant, and 4-7 parts by weight of an antibacterial agent are blended and treated, and then melt spinning treatment is performed, the melt spinning temperature is 275℃, the spinning speed is 2700m / min, the jet metering pump supply is 24g / min, and the modified spandex yarn is obtained; the flame retardant is magnesium hydroxide; and the antibacterial agent is nano silver powder.

[0038] The preparation method of the modifier of the embodiment is as follows:

[0039] S01: The nano-modified filler, a sodium silicate solution with a mass fraction of 6%, and a chitosan solution with a mass fraction of 4-5% are uniformly mixed and ball milled according to a weight ratio of (3-5):2:(4-7), the ball milling speed is 1000r / min, the ball milling time is 1h, and the modified filler liquid is obtained after the ball milling is completed;

[0040] S02: 5-8 parts by weight of the modified filler liquid, 2-5 parts by weight of a yttrium nitrate solution with a mass fraction of 2-5%, 1-3 parts by weight of silicon carbide whiskers, and 2-3 parts by weight of carboxymethyl cellulose are blended and stirred, the stirring is completed, and the modifier is obtained after filtration and drying.

[0041] The stirring speed of the blending and stirring treatment of the embodiment is 450-550r / min, the stirring time is 30-40min, and the stirring temperature is 50-55℃.

[0042] The preparation method of the nanometer modified filler in this embodiment is as follows:

[0043] According to parts by weight, 3-6 parts of flaky talc powder, 1-3 parts of nanometer silicon sol are added into 5-8 parts of sodium dodecylbenzenesulfonate solution, then 2-4 parts of silicon powder and 1-2 parts of citric acid are added, and then ball milling is performed for 2 hours at a ball milling speed of 1500 r / min, followed by water washing, suction filtration and drying to obtain the nanometer modified filler.

[0044] The mass fraction of the sodium dodecylbenzenesulfonate solution in this embodiment is 2-5%.

[0045] The preparation method of the resin body layer 3 in this embodiment is as follows:

[0046] The aqueous resin body is coated onto the reinforcing layer 2, and then a setting treatment is performed at a temperature of 115°C for 2-3 seconds, and then the resin body layer 3 is obtained after the treatment is completed;

[0047] The preparation method of the aqueous resin body is as follows:

[0048] S101: According to parts by weight, 4-7 parts of silane coupling agent KH550, 20-25 parts of deionized water and 10-15 parts of ethanol solvent are uniformly blended to obtain a medium body;

[0049] S102: The nanometer mica powder is preheated at 60-65°C for 10-15 minutes to obtain preheated nanometer mica powder;

[0050] According to parts by weight, 3-5 parts of preheated nanometer mica powder, 10-15 parts of medium body are first stirred and uniformly mixed, and then 5-8 parts of acrylic resin, 2-4 parts of lanthanum chloride solution with a mass fraction of 2-5% and 5-8 parts of curing agent are further blended to obtain the aqueous resin body.

[0051] The acrylic resin in this embodiment is a hydroxyl acrylic resin with a hydroxyl value of 120 mgKOH / g and a glass transition temperature of 45-50°C, and the curing agent is an HDI (hexamethylene diisocyanate) curing agent.

[0052] The embodiment also provides a preparation method of the flame-retardant, antibacterial and scratch-resistant aqueous resin microfiber fleece, which comprises the following steps: the reinforcing layer 2 is adhered to the island-shaped microfiber non-woven fabric 1 by polyurethane glue, and then the outer surface of the reinforcing layer 2 is coated with the aqueous resin body to form the resin body layer 3, so that the flame-retardant, antibacterial and scratch-resistant aqueous resin microfiber fleece is obtained.

[0053] Embodiment 1:

[0054] The flame-retardant, antibacterial and scratch-resistant aqueous resin microfiber fleece comprises the island-shaped microfiber non-woven fabric 1, the reinforcing layer 2 is adhered to the upper and lower surfaces of the island-shaped microfiber non-woven fabric 1 by polyurethane glue, and the resin body layer 3 is arranged on the outer surface of the reinforcing layer 2.

[0055] The reinforcing layer 2 is formed by warp knitting of flax fiber yarn and aramid fiber yarn at a weight ratio of 1:1;

[0056] The thickness of the islanded microfiber nonwoven fabric 1 is 0.4 mm; the thickness of the reinforcing layer 2 is 0.3 mm; and the thickness of the resin layer 3 is 0.2 mm.

[0057] The method for preparing the islanded microfiber nonwoven fabric 1 in this embodiment is as follows: 45 parts by weight of islanded sea-island fibers and 75 parts by weight of modified spandex yarn are opened, opened, formed into a web, and pre-needled to form islanded microfiber nonwoven fabrics, respectively. The fineness of the islanded sea-island fibers is 1.5 dtex, and the island number is 37 islands. The sea component of the islanded sea-island fibers is water-soluble polyester WSPET, and the island component is PET.

[0058] The method for preparing the modified spandex yarn in this embodiment is as follows:

[0059] By weight, 75 parts of polyurethane particles, 10 parts of a modifier, 1 part of polyvinylpyrrolidone, and 2 parts of silane coupling agent KH560, 4 parts of a flame retardant, and 4 parts of an antibacterial agent are blended and treated, and then melt spinning treatment is performed. The melt spinning temperature is 275°C, the spinning speed is 2700 m / min, the jet metering pump supply is 24 g / min, and the modified spandex yarn is obtained. The flame retardant is magnesium hydroxide, and the antibacterial agent is nano silver powder.

[0060] The method for preparing the modifier in this embodiment is as follows:

[0061] S01: The nano-modified filler, a sodium silicate solution with a mass fraction of 6%, and a chitosan solution with a mass fraction of 4% are uniformly mixed and ball milled at a weight ratio of 3:2:4. The ball milling speed is 1000 r / min, and the ball milling time is 1 h. After the ball milling is completed, a modified filler solution is obtained.

[0062] S02: By weight, 5 parts of the modified filler solution, 2 parts of a yttrium nitrate solution with a mass fraction of 2%, 1 part of silicon carbide whiskers, and 2 parts of carboxymethyl cellulose are blended and stirred. After stirring, the mixture is suction filtered and dried to obtain a modifier.

[0063] The stirring speed of the blending and stirring treatment in this embodiment is 450 r / min, the stirring time is 30 min, and the stirring temperature is 50°C.

[0064] The method for preparing the nano-modified filler in this embodiment is as follows:

[0065] By weight, 3 parts of flaky talc powder, 1 part of nano-silica sol, 5 parts of sodium dodecylbenzenesulfonate solution, 2 parts of silicon powder, and 1 part of citric acid are added, and then ball milled fully. The ball milling speed is 1500 r / min, and the ball milling time is 2 h. Then, the mixture is washed with water, suction filtered, and dried to obtain a nano-modified filler.

[0066] The mass fraction of the sodium dodecyl benzene sulfonate solution of the embodiment is 2%.

[0067] The preparation method of the resin body layer 3 of the embodiment is as follows:

[0068] The aqueous resin body is coated on the reinforcing layer 2, and then is subjected to a setting treatment at a temperature of 115 DEG C for 2 s, and the resin body layer 3 is obtained after the treatment is completed;

[0069] The preparation method of the aqueous resin body is as follows:

[0070] S101: 4 parts of silane coupling agent KH550, 20 parts of deionized water and 10 parts of ethanol solvent are uniformly blended by weight parts to obtain a medium body;

[0071] S102: The nano-mica powder is preheated at 60 DEG C for 10 min to obtain preheated nano-mica powder;

[0072] 3 parts of the preheated nano-mica powder, 10 parts of the medium body, 5 parts of acrylic resin, 2 parts of 2% mass fraction of lanthanum chloride solution and 5 parts of curing agent are first stirred and uniformly mixed by weight parts, and then are fully blended to obtain the aqueous resin body.

[0073] The acrylic resin of the embodiment is a hydroxyl acrylic resin with a hydroxyl value of 120 mgKOH / g and a glass transition temperature of 45 DEG C, and the curing agent is an HDI curing agent.

[0074] The preparation method of the flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece of the embodiment comprises the following steps: the reinforcing layer 2 is adhered and arranged with the island-shaped microfiber non-woven fabric 1 through polyurethane glue, and then the outer surface of the reinforcing layer 2 is coated with the aqueous resin body to form the resin body layer 3, thereby obtaining the flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece.

[0075] Embodiment 2:

[0076] The flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece comprises the island-shaped microfiber non-woven fabric 1, and the reinforcing layer 2 is adhered and arranged on the upper and lower surfaces of the island-shaped microfiber non-woven fabric 1 through polyurethane glue, and the resin body layer 3 is arranged on the outer surface of the reinforcing layer 2;

[0077] The reinforcing layer 2 is formed by warp knitting of flax fiber yarn and aramid fiber yarn at a weight ratio of 1:1;

[0078] The thickness of the island-shaped microfiber non-woven fabric 1 is 0.5 mm, the thickness of the reinforcing layer 2 is 0.4 mm, and the thickness of the resin body layer 3 is 0.3 mm.

[0079] The preparation method of the island-fixed ultrafine fiber nonwoven fabric 1 of this example is: 55 parts by weight of island-fixed bicomponent fibers and 85 parts by weight of modified spandex filaments are taken as raw materials to form island-fixed ultrafine fiber nonwoven fabrics respectively through opening, opening, webbing and pre-needling, the fineness of the island-fixed bicomponent fibers is 6.5 dtex, the island number is 37 islands, and the sea component of the island-fixed bicomponent fibers is water-soluble polyester WSPET and the island component is PET.

[0080] The preparation method of the modified spandex filaments of this example is:

[0081] By weight parts, 85 parts of polyurethane particles, 15 parts of modifier, 3 parts of polyvinylpyrrolidone and 4 parts of silane coupling agent KH560, 7 parts of flame retardant, 7 parts of antibacterial agent are blended and treated, and then melt spinning treatment is carried out, the melt spinning temperature is 275℃, the spinning speed is 2700m / min, the jet metering pump supply is 24g / min, and the modified spandex filaments are obtained; the flame retardant is magnesium hydroxide; the antibacterial agent is nano silver powder.

[0082] The preparation method of the modifier of this example is:

[0083] S01: The nano-modified filler, a sodium silicate solution with a mass fraction of 6% and a chitosan solution with a mass fraction of 5% are uniformly mixed and ball milled at a weight ratio of 5:2:7, the ball milling speed is 1000r / min, the ball milling time is 1h, and after the ball milling is completed, a modified filler solution is obtained;

[0084] S02: By weight parts, 8 parts of the modified filler solution, 5 parts of a yttrium nitrate solution with a mass fraction of 5%, 3 parts of silicon carbide whiskers and 3 parts of carboxymethyl cellulose are blended and stirred, after stirring, suction filtration and drying, a modifier is obtained.

[0085] The stirring speed of the blending and stirring treatment of this example is 550r / min, the stirring time is 40min, and the stirring temperature is 55℃.

[0086] The preparation method of the nano-modified filler of this example is:

[0087] By weight parts, 6 parts of flaky talc powder, 3 parts of nano silicon sol are added to 8 parts of sodium dodecylbenzenesulfonate solution, then 4 parts of silicon powder and 2 parts of citric acid are added, ball milling is carried out fully, the ball milling speed is 1500r / min, the ball milling time is 2h, and then water washing, suction filtration and drying are carried out to obtain a nano-modified filler.

[0088] The mass fraction of the sodium dodecylbenzenesulfonate solution of this example is 5%.

[0089] The preparation method of the resin body layer 3 of this example is:

[0090] The aqueous resin body is coated onto the reinforcing layer 2, and then is subjected to setting treatment at a temperature of 115℃ for 2.5s, and after the treatment is completed, the resin body layer 3 is obtained.

[0091] The preparation method of the aqueous resin body is as follows:

[0092] S101: 7 parts of silane coupling agent KH550, 25 parts of deionized water and 15 parts of ethanol solvent are uniformly blended by weight parts to obtain a medium body;

[0093] S102: The nano-mica powder is preheated at 65℃ for 15min to obtain preheated nano-mica powder;

[0094] The preheated nano-mica powder, 5 parts by weight, the medium body, 15 parts, are first stirred and mixed uniformly, and then 8 parts of acrylic resin, 4 parts of 5% by mass fraction of lanthanum chloride solution and 8 parts of curing agent are added and fully blended to obtain the aqueous resin body.

[0095] The acrylic resin of this embodiment is a hydroxyl acrylic resin with a hydroxyl value of 120mgKOH / g and a glass transition temperature of 50℃, and the curing agent is an HDI curing agent.

[0096] The preparation method of the flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece of this embodiment comprises the following steps: the reinforcing layer 2 is adhered and arranged with the islanded superfine fiber non-woven fabric 1 through polyurethane glue, and then the outer surface of the reinforcing layer 2 is coated with the aqueous resin body to form the resin body layer 3, thereby obtaining the flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece.

[0097] Example 3:

[0098] A flame-retardant antibacterial scratch-resistant aqueous resin microfiber fleece comprises an islanded superfine fiber non-woven fabric 1, and reinforcing layers 2 are adhered and arranged on the upper and lower surfaces of the islanded superfine fiber non-woven fabric 1 through polyurethane glue, and resin body layers 3 are arranged on the outer surfaces of the reinforcing layers 2;

[0099] The reinforcing layer 2 is formed by interlaced knitting of flax fiber yarn and aramid fiber yarn in a weight ratio of 1:1;

[0100] The thickness of the islanded superfine fiber non-woven fabric 1 is 0.45mm; the thickness of the reinforcing layer 2 is 0.35mm; and the thickness of the resin body layer 3 is 0.25mm.

[0101] The preparation method of the islanded superfine fiber non-woven fabric 1 of this embodiment is as follows: 50 parts by weight of islanded sea-island fibers and 80 parts by weight of modified spandex filaments are used as raw materials to form islanded superfine fiber non-woven fabrics through opening, opening, webbing and pre-needling, respectively, the fineness of the islanded sea-island fibers is 4.5dtex, the island number is 37 islands, the sea component of the islanded sea-island fibers is water-soluble polyester WSPET, and the island component is PET.

[0102] The preparation method of the modified spandex filaments of this embodiment is as follows:

[0103] By weight parts, 80 parts of polyurethane particles, 12.5 parts of modifier, 2 parts of polyvinylpyrrolidone and 3 parts of silane coupling agent KH560, 5.5 parts of flame retardant, 5.5 parts of antibacterial agent are blended and treated, and then melt spinning treatment is carried out, the melt spinning temperature is 275℃, the spinning speed is 2700m / min, the jet metering pump supply is 24g / min, and the modified spandex yarn is obtained; the flame retardant is magnesium hydroxide; the antibacterial agent is nano silver powder.

[0104] The preparation method of the modifier of the embodiment is:

[0105] S01: The nano modified filler, a sodium silicate solution with a mass fraction of 6% and a chitosan solution with a mass fraction of 4.5% are uniformly mixed and ball milled at a weight ratio of 4:2:5.5, the ball milling speed is 1000r / min, the ball milling time is 1h, and after the ball milling is completed, a modified filler solution is obtained;

[0106] S02: By weight parts, 6.5 parts of the modified filler solution, 3.5 parts of a yttrium nitrate solution with a mass fraction of 3.5%, 2 parts of silicon carbide whiskers and 2.5 parts of carboxymethyl cellulose are blended and stirred, after stirring, suction filtration and drying, a modifier is obtained.

[0107] The stirring speed of the blending and stirring treatment of the embodiment is 500r / min, the stirring time is 35min, and the stirring temperature is 52℃.

[0108] The preparation method of the nano modified filler of the embodiment is:

[0109] By weight parts, 4.5 parts of flaky talc powder, 2 parts of nano silicon sol are added to 6.5 parts of sodium dodecylbenzenesulfonate solution, then 3 parts of silicon powder and 1.5 parts of citric acid are added, ball milling is fully carried out, the ball milling speed is 1500r / min, the ball milling time is 2h, and then water washing, suction filtration and drying are carried out to obtain a nano modified filler.

[0110] The mass fraction of the sodium dodecylbenzenesulfonate solution of the embodiment is 3.5%.

[0111] The preparation method of the resin body layer 3 of the embodiment is:

[0112] The water-based resin body is coated on the reinforcing layer 2, and then the setting treatment is carried out at a temperature of 115℃ for 2.5s, and after the treatment is completed, the resin body layer 3 is obtained;

[0113] The preparation method of the water-based resin body is:

[0114] S101: By weight parts, 5.5 parts of silane coupling agent KH550, 22.5 parts of deionized water and 12.5 parts of ethanol solvent are uniformly blended to obtain a medium body;

[0115] S102: preheat the nanometer mica powder at 62℃ for 12.5 min to obtain preheated nanometer mica powder;

[0116] By weight parts, 4 parts of preheated nanometer mica powder, 12.5 parts of medium body are first stirred and mixed uniformly, and then 6.5 parts of acrylic resin, 3 parts of 3.5% by mass fraction of lanthanum chloride solution and 6.5 parts of curing agent are added and fully blended to obtain a water-based resin body.

[0117] The acrylic resin of the embodiment is a hydroxyl acrylic resin with a hydroxyl value of 120 mgKOH / g and a glass transition temperature of 47.5℃, and the curing agent is an HDI curing agent.

[0118] The preparation method of the flame-retardant antibacterial scratch-resistant water-based resin microfiber fleece of the embodiment comprises the following steps: the reinforcing layer 2 is adhered and arranged with the island-shaped microfiber non-woven fabric 1 through polyurethane glue, and then the outer surface of the reinforcing layer 2 is coated with a water-based resin body to form a resin body layer 3, thereby obtaining the flame-retardant antibacterial scratch-resistant water-based resin microfiber fleece.

[0119] Comparative Example 1:

[0120] Different from Example 3, no modifier is added in the preparation of the modified spandex yarn.

[0121] Comparative Example 2:

[0122] Different from Example 3, no modified filler solution is added in the modifier.

[0123] Comparative Example 3:

[0124] Different from Example 3, no sodium silicate solution is added in the modified filler solution, and deionized water is used instead of chitosan solution.

[0125] Comparative Example 4:

[0126] Different from Example 3, no nanometer modified filler is added in the modified filler solution.

[0127] Comparative Example 5:

[0128] Different from Example 3, no flaky talc and nanometer silicon sol are added in the nanometer modified filler.

[0129] Comparative Example 6:

[0130] Different from Example 3, no silicon powder and citric acid are added in the nanometer modified filler.

[0131] Comparative Example 7:

[0132] Different from Example 3, no silicon carbide whisker and carboxymethyl cellulose are added in the modifier.

[0133] Comparative Example 8:

[0134] Different from example 3, the product was not treated with the aqueous resin body.

[0135] Comparative example 9:

[0136] Different from example 3, the preheated nano-mica powder and the lanthanum chloride solution were not added in the aqueous resin body.

[0137] The products of examples 1-3 and comparative examples 1-9 were tested for the antibacterial and flame-retardant properties under normal conditions, and the test results are shown in Table 1.

[0138] Table 1 Test results of the products of examples 1-3 and comparative examples 1-9 under normal conditions:

[0139]

[0140] From examples 1-3 and comparative examples 1-9, it can be seen that the product of example 3 has a 48h measured antibacterial rate of E. coli of up to 99.9% under normal conditions, and an oxygen index of up to 48.9%, and the antibacterial and flame-retardant properties of the product are excellent, and the antibacterial and flame-retardant properties can be improved coordinately.

[0141] Meanwhile, the product was immersed in water for 48h, the water immersion temperature was 55℃, and after taking out, it was scraped 10 times with a load of 5N, and the antibacterial and flame-retardant properties under water and scraping resistant conditions were tested; meanwhile, the product was immersed in water for 48h, the water immersion temperature was 55℃, and after taking out, it was placed at 70℃ for 48h, and the antibacterial and flame-retardant properties under water and heat resistant conditions were tested; the test results are shown in Table 2.

[0142] Table 2 Test results of the products of examples 1-3 and comparative examples 1-9 under water and scraping resistant conditions and under water and heat resistant conditions:

[0143]

[0144] From comparative examples 1-9 and example 3, it can be seen that the water and scraping resistant stability and the water and heat resistant stability of the product are significantly improved, and the antibacterial and flame-retardant stability of the products of comparative examples 1-9 has a varying degree of deterioration trend, and the performance of the product changes significantly when no modifier is added in the modified spandex yarn and the product is not treated with the aqueous resin body, and the performance of the product is most obvious when the two are coordinated.

[0145] When no modified filler solution is added in the modifier, no sodium silicate solution is added in the modified filler solution, the chitosan solution is replaced by deionized water, no nano-modified filler is added in the modified filler solution, no flaky talc, nano-silica sol, silicon powder and citric acid are added in the nano-modified filler, and no silicon carbide whisker and carboxymethyl cellulose are added in the modifier, the performance of the product has a deterioration trend.

[0146] The performance of the product is obviously deteriorated without adding the nano-modified filler in the modified filler liquid, and the nano-modified filler obtained by the specific method of the application and the specific modified filler liquid, the silicon carbide whisker and the carboxymethyl cellulose are used to obtain the modifier, and the performance effect of the product is the most obvious, and other methods are not as obvious as the effect of the application; and the performance of the product is also deteriorated to different degrees without adding the preheated nano-mica powder and the lanthanum chloride solution in the water-based resin body.

[0147] The innovation of the application is that the modifier added is the nano-modified filler, the sodium silicate solution and the chitosan solution are mixed and coordinated, the yttrium nitrate solution, the silicon carbide whisker and the carboxymethyl cellulose are added and blended and stirred, the yttrium nitrate solution is used to mix the whisker structure, the whisker structure is distributed in the system, the nano-modified filler is jointly added, the nano-modified filler is mixed and coordinated by the flaky talc powder, the nano-silica sol, the sodium dodecyl benzene sulfonate solution, the silicon powder and the citric acid, the flaky talc powder is used to fill the system structure with the silicon powder, the silicon carbide whisker and the carboxymethyl cellulose are added and blended to adjust and mix, the antibacterial and flame-retardant properties of the product are further improved, and the water resistance, the scratch resistance, the water resistance and the high-temperature resistance of the product are further improved.

[0148] It is apparent for those skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, and the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the application.

[0149] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A flame-retardant antibacterial scratch-resistant microfiber fleece based on a waterborne resin, characterized in that The application relates to a fixed-island superfine fiber non-woven fabric (1), which is provided with a reinforcing layer (2) on the upper and lower surfaces of the fixed-island superfine fiber non-woven fabric (1) through polyurethane adhesive bonding, and is further provided with a resin body layer (3) on the outer surface of the reinforcing layer (2). The reinforcing layer (2) is formed by warp knitting of flax fiber yarn and aramid fiber yarn according to a weight ratio of 1:

1. The thickness of the fixed-island superfine fiber non-woven fabric (1) is 0.4-0.5mm; the thickness of the reinforcing layer (2) is 0.3-0.4mm; and the thickness of the resin body layer (3) is 0.2-0.3mm. The preparation method of the fixed-island superfine fiber non-woven fabric (1) is as follows: 45-55 parts by weight of fixed-island type sea-island fibers and 75-85 parts by weight of modified spandex yarn are taken as raw materials to form fixed-island superfine fiber non-woven fabrics through opening, opening cotton, netting and pre-needling respectively, the fineness of the fixed-island type sea-island fibers is 1.5-6.5dtex, the island number is 37, the sea component of the fixed-island type sea-island fibers is water-soluble polyester WSPET, and the island component is PET. The preparation method of the modified spandex yarn is as follows: 75-85 parts by weight of polyurethane particles, 10-15 parts by weight of a modifier, 1-3 parts by weight of polyvinylpyrrolidone, 2-4 parts by weight of silane coupling agent KH560, 4-7 parts by weight of a flame retardant and 4-7 parts by weight of an antibacterial agent are blended, and then melt spinning treatment is conducted, the melt spinning temperature is 275 DEG C, the spinning speed is 2700m / min, the jet metering pump supply is 24g / min, and the modified spandex yarn is obtained; the flame retardant is magnesium hydroxide; and the antibacterial agent is nano silver powder. The preparation method of the modifier is as follows: S01: nano modified filler, a sodium silicate solution with a mass fraction of 6% and a chitosan solution with a mass fraction of 4-5% are uniformly mixed and ball milled according to a weight ratio of (3-5):2:(4-7), the ball milling speed is 1000r / min, the ball milling time is 1h, and the modified filler liquid is obtained after the ball milling is completed; S02: 5-8 parts by weight of the modified filler liquid, 2-5 parts by weight of a yttrium nitrate solution with a mass fraction of 2-5%, 1-3 parts by weight of silicon carbide whiskers and 2-3 parts by weight of carboxymethyl cellulose are blended and stirred, the stirring is completed, and the modifier is obtained after filtration and drying; The preparation method of the nano modified filler is as follows: 3-6 parts by weight of flaky talc powder, 1-3 parts by weight of nano silicon sol and 5-8 parts by weight of a sodium dodecyl benzene sulfonate solution are added, then 2-4 parts by weight of silicon powder and 1-2 parts by weight of citric acid are added, the ball milling is fully carried out, the ball milling speed is 1500r / min, the ball milling time is 2h, and then the nano modified filler is obtained after water washing, filtration and drying.

2. The flame retardant, antibacterial, scratch resistant, water based resin microfiber fleece according to claim 1, characterized in that, The stirring speed of the blending and stirring treatment is 450-550r / min, the stirring time is 30-40min, and the stirring temperature is 50-55 DEG C.

3. The flame retardant, antibacterial, scratch resistant, water based resin microfiber fleece according to claim 1, wherein, The mass fraction of the sodium dodecyl benzene sulfonate solution is 2-5%.

4. The flame retardant, antibacterial, scratch resistant, water based resin microfiber fleece according to claim 1, wherein, The preparation method of the resin body layer (3) is as follows: The water-based resin body is coated on the reinforcing layer (2), and then the resin body layer (3) is obtained after the setting treatment is conducted at a temperature of 115 DEG C for 2-3s; The preparation method of the water-based resin body is as follows: S101: by weight parts, 4-7 parts of silane coupling agent KH550, 20-25 parts of deionized water and 10-15 parts of ethanol solvent are uniformly blended to obtain a medium body; S102: the nano mica powder is preheated at 60-65°C for 10-15 min to obtain a preheated nano mica powder; By weight parts, 3-5 parts of preheated nano mica powder, 10-15 parts of medium body are first stirred and mixed uniformly, then 5-8 parts of acrylic resin, 2-4 parts of 2-5% by mass fraction of lanthanum chloride solution and 5-8 parts of curing agent are added and fully blended to obtain a water-based resin body.

5. The flame retardant, antibacterial, scratch resistant, water based resin microfiber fleece according to claim 4, wherein, The acrylic resin is a hydroxyl acrylic resin with a hydroxyl value of 120 mgKOH / g and a glass transition temperature of 45-50°C, and the curing agent is an HDI curing agent.

6. A process for the preparation of a flame retardant, antibacterial, scratch resistant, water based resin microfiber fleece according to any one of claims 1 to 5, characterized in that, The steps include: The reinforcing layer (2) is adhered and arranged with the fixed island superfine fiber non-woven fabric (1) by polyurethane glue, the outer surface of the reinforcing layer (2) is coated with the water-based resin body to form a resin body layer (3), and thus the flame-retardant, antibacterial and scratch-resistant water-based resin superfine fabric is obtained.

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