Antibacterial wiping polyester fiber and wiping cloth prepared from antibacterial wiping polyester fiber

Abstract

The invention discloses a polyester fiber for antibacterial wiping and wiping cloth prepared from the polyester fiber, and relates to the technical field of polyester fibers. The antibacterial polyester fiber for wiping is prepared from the following components in parts by weight: 10 to 20 parts of antibacterial PET (Polyethylene Terephthalate) master batch and 100 parts of PET slices, wherein the antibacterial PET master batch is prepared from the following components in parts by weight: 1 to 1.5 parts of an antibacterial component I, 23.25 parts of PET slices and 0.25 to 0.75 part of a compatilizer. The wiping cloth is prepared by spinning antibacterial wiping polyester fibers into a required product specification, then carrying out plasma modification treatment, spraying an antibacterial spraying liquid, and drying. Wherein the antibacterial spraying liquid comprises the following components in percentage by mass: 3-5% of an antibacterial component II, 3-5% of silver nitrate, 1-2% of a silane coupling agent and the balance of deionized water.

Description

Technical Field

[0001] The invention relates to the technical field of polyester fibers, in particular to antibacterial wiping polyester fibers and wiping cloth prepared therefrom. Background Art

[0002] Polyester fiber, scientifically known as polyester fiber, is a type of synthetic fiber with the advantages of high strength, good elasticity, wear resistance, easy washing and quick drying, etc. It is widely used in clothing, home textiles, industrial textiles and other fields. However, polyester fiber also has some disadvantages, the most well-known of which is that it is easy to breed bacteria, causing odor, which has a great impact on people's living hygiene and safety.

[0003] Generally speaking, polyester fibers that have not been treated with antibacterial agents do not have antibacterial properties. Under certain conditions, textiles woven from polyester fibers will provide an environment for bacteria to survive and reproduce, threatening human health. The main method to solve the antibacterial problem of polyester fibers is to give polyester fibers certain antibacterial properties through surface modification technology or blending modification technology. The former is to attach antibacterial components to the fiber surface by spraying or padding. The antibacterial components are very easy to wash off and cannot achieve a lasting antibacterial effect. The latter is to add antibacterial components to polymer slices, prepare antibacterial masterbatches by screw extrusion, and then prepare antibacterial composite fibers by melt spinning technology. This process is relatively complicated and it is difficult to evenly distribute the antibacterial components, so the antibacterial properties are unstable.

[0004] In summary, the present invention provides an antibacterial wiping polyester fiber, and on the basis of the antibacterial polyester fiber, further prepares a wiping cloth, which has excellent antibacterial properties and can effectively inhibit bacterial growth. Summary of the invention

[0005] The object of the present invention is to provide an antibacterial wiping polyester fiber and a wiping cloth prepared therefrom, so as to solve the problems raised in the prior art.

[0006] To achieve the above object, the first aspect of the present invention provides the following technical solutions: An antibacterial wiping polyester fiber comprises the following components: by weight: 10~20 parts of antibacterial PET masterbatch; PET slices 100 pieces; Wherein, the antibacterial PET masterbatch comprises the following components: by weight, Antibacterial component I 1-1.5 parts; PET slices 23.25; Compatibilizer 0.25~0.75 parts.

[0007] Furthermore, the method for preparing the antibacterial wiping polyester fiber comprises the following steps: Step 1: After the antibacterial component I, PET slices and compatibilizer are uniformly mixed according to the formula ratio, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; Step 2: After the antibacterial PET masterbatch and PET chips are evenly mixed according to the formula ratio, they are added into the spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling.

[0008] Furthermore, the preparation method of the antibacterial component I is as follows: (1) adding mercaptosilane coupling agent, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stirring and mixing, and adding acetic acid to adjust the pH to 4.5-6, and continuing to stir and mix for 5-15 minutes to obtain a silane hydrolyzate; dispersing silica in anhydrous ethanol to obtain a 50wt% silica dispersion; heating the silica dispersion to 50-60°C, and slowly adding the silane hydrolyzate, and after the addition is completed, continuing to stir for 6-10 hours, filtering, washing and drying to obtain mercapto silica; (2) dispersing mercapto silica in anhydrous ethanol to obtain an 8wt% mercapto silica dispersion; adding allyl imidazolium and a photoinitiator to the mercapto silica dispersion, ultrasonically dispersing for 5-15 minutes, reacting under ultraviolet light for 15-45 minutes, filtering and drying to obtain the antibacterial component I.

[0009] Furthermore, the amount of the mercaptosilane coupling agent used is 4-5% of the amount of silicon dioxide used.

[0010] Furthermore, the mercaptosilane coupling agent includes but is not limited to any one of 3-mercaptopropyltrimethoxysilane and 3-mercaptopropyltriethoxysilane.

[0011] Furthermore, the average particle size of the silicon dioxide is 20-30 nm.

[0012] Furthermore, the mass ratio of the mercapto silica, allyl imidazolium and photoinitiator is 12:(1-1.2):(0.1-0.12).

[0013] Furthermore, the preparation method of the allyl imidazolium is as follows: (1) dispersing imidazole in dimethylacetamide to obtain a 10-20wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 8-10, and then dripping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 30-60°C for 6-18h, and purifying to obtain product A; (2) adding product A, bromododecane, and acetonitrile into a reaction container, stirring and reacting at 50-65°C for 20-30h, and purifying to obtain allyl imidazolium.

[0014] Furthermore, the mass ratio of the imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone is (1-1.2):3:(0.001-0.002).

[0015] Furthermore, the mass ratio of the product A, dodecane bromide and acetonitrile is 1:(2-2.2):6.

[0016] Furthermore, the compatibilizer is obtained by mixing maleic anhydride grafted methacrylate glycidyl ether and maleic anhydride grafted ethylene octene copolymer in a mass ratio of 1:1; The preparation method of maleic anhydride grafted methacrylate glycidyl ether is as follows: maleic anhydride, methacrylate glycidyl ether, an initiator, and tetrahydrofuran are added into a reaction container, heated to 200-220° C. under an inert atmosphere, stirred for reaction for 6-18 hours, and purified to obtain maleic anhydride grafted methacrylate glycidyl ether.

[0017] The preparation method of maleic anhydride grafted ethylene octene copolymer is as follows: maleic anhydride, ethylene octene copolymer, initiator and tetrahydrofuran are added into a reaction container, heated to 200-220° C. under an inert atmosphere, stirred and reacted for 6-18 hours, and purified to obtain the maleic anhydride grafted ethylene octene copolymer.

[0018] Furthermore, the mass ratio of maleic anhydride, glycidyl methacrylate, initiator and tetrahydrofuran is (0.1-0.3):(0.7-1):(0.01-0.05):5.

[0019] Furthermore, the mass ratio of maleic anhydride, ethylene octene copolymer, initiator and tetrahydrofuran is (0.1-0.3):(0.7-1):(0.01-0.05):5.

[0020] Furthermore, the initiator includes but is not limited to any one of azobisisobutyronitrile, dicumyl peroxide, and dibenzoyl peroxide.

[0021] In the present invention, a mercaptosilane coupling agent is used to modify the surface of silicon dioxide to make it mercapto-modified to obtain mercapto-silica; then allyl imidazolium is grafted on its surface through a click reaction to obtain an antibacterial component I. The allyl imidazolium structure in the antibacterial component I plays a major antibacterial role, and its antibacterial performance is more excellent compared to traditional common quaternary ammonium antibacterial agents; silicon dioxide has a certain antibacterial effect, and it has a large specific surface area. After modification, it can be grafted with more allyl imidazolium, and combining the two can play a good antibacterial effect. In addition, both allyl imidazolium and silicon dioxide can improve the antistatic performance of the resin to a certain extent; in addition, silicon dioxide belongs to an inorganic filler, and inorganic fillers have a certain promoting and improving effect on the mechanical properties of resin products.

[0022] The allyl imidazolium used in the present invention is prepared by reacting imidazole with 1-bromo-3,7-dimethyl-2,6-octadiene, and contains two unsaturated bonds. In the scheme, the amount of mercapto-silica and allyl imidazolium is controlled so that an unsaturated bond is retained in the prepared antibacterial component I. Based on this, a compatibilizer is further prepared in the present invention, and then added to the mixture of the antibacterial component I and PET chips to promote the melt blending of the two. The addition of the compatibilizer can promote the uniform dispersion of the antibacterial component I, thereby further enhancing the antibacterial property, mechanical property and antistatic property of the prepared antibacterial wiping polyester fiber.

[0023] Furthermore, the blending temperature is 280-310° C., the blending time is 15-30 min, and the screw speed is 300-500 r / min.

[0024] Furthermore, the spinning parameters are: the spinning metering pump supply is 600-900 g / min, the spinning temperature is 275-290° C., the spinning speed is 500-1000 m / min, and the traction multiple is 1.5-4.5 times.

[0025] The second invention of the present invention provides a wiping cloth made of polyester fiber for antibacterial wiping, and the preparation method thereof comprises the following steps: Step 1: After weaving the antibacterial wiping polyester fiber into a wiping cloth of required specifications, the wiping cloth is subjected to plasma modification treatment to obtain a wiping cloth to be sprayed; Step 2: Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth.

[0026] Furthermore, the parameters of the plasma modification treatment are: the discharge gas is argon, the gas flow rate is 1~10L / min, the input power is 20~1000W, the discharge voltage is 5~30KV, the discharge frequency is 5~50KHz, and the modification treatment time is 5~30s.

[0027] Plasma modification treatment can change the distribution and number of polar groups on the surface of the resin fiber, and can also improve the antistatic properties of the resin fiber to a certain extent, without damaging the strength and other properties of the fiber. Therefore, the present invention uses plasma modification to treat the wiping cloth, which not only increases the polar groups (-OH, -COOH, etc.) on the wiping cloth to be sprayed, but also improves the antistatic properties of the wiping cloth.

[0028] Furthermore, the antibacterial spray liquid comprises the following components: by mass percentage: Antibacterial component II 3~5%, Silver nitrate 3~5%, Silane coupling agent 1~2%, the rest is deionized water.

[0029] Furthermore, the preparation method of the antibacterial component II is as follows: (1) adding allyl imidazolium, tetraallylsilane and initiator to tetrahydrofuran, stirring and reacting at 65-80°C for 4-10 hours, and terminating the reaction; (2) adding pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator to (1), ultrasonically dispersing for 5-15 minutes, reacting under ultraviolet light for 15-45 minutes, and purifying to obtain the antibacterial component II.

[0030] Furthermore, the mass ratio of the allyl imidazolium, tetraallylsilane, initiator, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator is (4-5):1:(0.03-0.06):(2.5-3):(0.1-0.3).

[0031] Furthermore, the silane coupling agent includes but is not limited to any one of dimethyldiethoxysilane and methyltriethoxysilane.

[0032] Furthermore, the spraying parameters are: spray gun pressure is 0.3-0.5 MPa, spray distance is 10-20 cm, and spray rate is 2-4 m / min.

[0033] In the present invention, allyl imidazolium and tetraallylsilane are controlled to initiate polymerization, and then a click reaction is carried out with pentaerythritol tetra-3-mercaptopropionate to obtain an antibacterial component II; finally, the antibacterial component II is compounded with silver nitrate and a silane coupling agent to obtain an antibacterial spray liquid. The antibacterial spray liquid can further improve the antibacterial performance of the wiping cloth. Since the wiping cloth to be sprayed is treated with plasma modification and under the synergistic effect of the silane coupling agent, after the antibacterial spray liquid is sprayed and dried, its effective ingredients can be better adsorbed on the wiping cloth, thereby giving the wiping cloth better antibacterial and antistatic properties.

[0034] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention prepares the antibacterial component I to achieve the modification of PET, thereby preparing the antibacterial wiping polyester fiber, which has excellent antibacterial properties, mechanical properties and antistatic properties; 2. The present invention prepares the antibacterial component II and compounding it with silver nitrate and a silane coupling agent to obtain an antibacterial spray liquid; and then spraying the antibacterial spray liquid onto the wiping cloth to further enhance the excellent antibacterial performance of the wiping cloth; 3. In the present invention, the wiping cloth obtained by weaving polyester fibers for antibacterial wiping is subjected to plasma modification treatment, thereby increasing the polar groups on its surface and achieving surface modification of the wiping cloth; and then, in combination with the silane coupling agent, after the antibacterial spray liquid is dried, its effective ingredients can be well adsorbed on the wiping cloth, thereby better achieving antibacterial protection of the wiping cloth; 4. The present invention comprehensively prepares a polyester fiber with excellent antibacterial properties, mechanical properties and antistatic properties, and uses the polyester fiber to process and prepare a wiping cloth. The wiping cloth can achieve effective antibacterial properties and will not become moldy even after long-term use. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that the purchasers of all raw materials involved in the present invention include, without any special restrictions, illustratively: 3-Mercaptopropyltrimethoxysilane with a purity of 99%, photoinitiator photoinitiator 819, silica with a purity of 99%, average particle size of 20-30 nm, bromide dodecane with a purity of 99%, acetonitrile with a purity of 99%, p-benzoquinone with a purity of 99%, maleic anhydride with a purity of 99%, glycidyl methacrylate with a purity of 99%, diisopropylbenzene peroxide with a purity of 99%, pentaerythritol tetrakis-3-mercaptopropionate with a purity of 99%, CAS number: 7575-23-7, dimethyldiethoxysilane with a purity of 99%, all purchased from Hubei Yongkuo Technology Co., Ltd.; 1-Bromo-3,7-dimethyl-2,6-octadiene with a purity of 99%, CAS number: 6138-90-5, ethylene octene copolymer with a purity of 99%, CAS number: 66251-44-3, and imidazole with a purity of 99.5%, were purchased from Shanghai Jinjinle Industrial Co., Ltd.; Tetraallylsilane with a purity of 97%, CAS number: 1112-66-9, was purchased from Xuzhou Zhuoyun New Materials Technology Co., Ltd.; Each portion in the examples is 100 g.

[0037] Pre-preparation: 1. Preparation of maleic anhydride grafted methacrylate glycidyl ether: maleic anhydride, methacrylate glycidyl ether, dicumyl peroxide, and tetrahydrofuran were added into a reaction vessel at a mass ratio of 0.2:0.8:0.03:5, heated to 210° C. under an inert atmosphere, stirred and reacted for 12 hours, and purified to obtain maleic anhydride grafted methacrylate glycidyl ether; 2. The preparation method of maleic anhydride grafted ethylene octene copolymer is as follows: maleic anhydride, ethylene octene copolymer, dicumyl peroxide, and tetrahydrofuran are added into a reaction container at a mass ratio of 0.2:0.8:0.03:5, heated to 210° C. under an inert atmosphere, stirred and reacted for 12 hours, and purified to obtain maleic anhydride grafted ethylene octene copolymer; 3. The maleic anhydride grafted methacrylate glycidyl ether and the maleic anhydride grafted ethylene octene copolymer were mixed in a mass ratio of 1:1 to prepare a compatibilizer.

[0038] Example 1: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1.1:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2.1:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly drop the silane hydrolyzate; after the dropwise addition is completed, continue to stir for 8 hours, filter, wash and dry to obtain a thiol-containing product. Silicon dioxide; (2) dispersing mercaptosilicic acid silicon dioxide in anhydrous ethanol to obtain 8 wt% of mercaptosilicic acid silicon dioxide dispersion; adding allyl imidazolium and photoinitiator 819 to the mercaptosilicic acid silicon dioxide dispersion, ultrasonically dispersing for 15 minutes, reacting under ultraviolet light for 30 minutes, filtering and drying to obtain antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4.5% of the amount of silicon dioxide; the mass ratio of mercaptosilicic acid silicon dioxide, allyl imidazolium and photoinitiator 819 is 12:1.1:0.11; 3. After 1.25 parts of antibacterial component I, 23.25 parts of PET chips and 0.5 parts of compatibilizer are mixed evenly, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25 minutes and the screw speed is 400 r / min; 4. After 15 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 15s; 2. Preparation of antibacterial component II: (1) Add allyl imidazolium, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stir and react at 70°C for 6 hours, and terminate the reaction; (2) Add pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically disperse for 15 minutes, react under ultraviolet light for 30 minutes, and purify to obtain antibacterial component II; wherein the mass ratio of allyl imidazolium, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 4.5:1:0.05:2.8:0.2; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, antibacterial component II 4%, silver nitrate 4%, dimethyldiethoxysilane 1.5%, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 3m / min.

[0039] Example 2: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly add the silane hydrolyzate dropwise. After the addition is complete, continue stirring for 8 hours, filter, wash and dry to obtain (2) dispersing the thiolated silica in anhydrous ethanol to obtain an 8 wt % thiolated silica dispersion; adding allyl imidazolium and photoinitiator 819 to the thiolated silica dispersion, ultrasonically dispersing for 15 min, reacting under ultraviolet light for 30 min, filtering and drying to obtain an antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4% of the amount of silica; the mass ratio of thiolated silica, allyl imidazolium and photoinitiator 819 is 12:1:0.1; 3. After uniformly mixing 1 part of antibacterial component I, 23.25 parts of PET chips and 0.25 parts of compatibilizer, add them into a twin-screw extruder, melt blend, extrude, pelletize and cool to obtain antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25min, and the screw speed is 400r / min; 4. After 10 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 5s; 2. Preparation of antibacterial component II: (1) Add allyl imidazolium, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stir and react at 70°C for 6 hours, and terminate the reaction; (2) Add pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically disperse for 15 minutes, react under ultraviolet light for 30 minutes, and purify to obtain antibacterial component II; wherein the mass ratio of allyl imidazolium, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 4:1:0.03:2.5:0.1; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, 3% of antibacterial component II, 3% of silver nitrate, 1% of dimethyldiethoxysilane, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 2m / min.

[0040] Example 3: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1.2:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2.2:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly add the silane hydrolyzate dropwise. After the addition is complete, continue stirring for 8 hours, filter, wash and dry to obtain a mercaptopropyltrimethoxysilane. (2) dispersing the mercaptosilica in anhydrous ethanol to obtain an 8 wt % mercaptosilica dispersion; adding allyl imidazolium and photoinitiator 819 to the mercaptosilica dispersion, ultrasonically dispersing for 15 min, reacting under ultraviolet light for 30 min, filtering and drying to obtain an antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 5% of the amount of silica; the mass ratio of mercaptosilica, allyl imidazolium and photoinitiator 819 is 12:1.2:0.12; 3. After 1.5 parts of antibacterial component I, 23.25 parts of PET chips and 0.75 parts of compatibilizer are mixed evenly, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25 minutes and the screw speed is 400 r / min; 4. After 20 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 30s; 2. Preparation of antibacterial component II: (1) Add allyl imidazolium, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stir and react at 70°C for 6 hours, and terminate the reaction; (2) Add pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically disperse for 15 minutes, react under ultraviolet light for 30 minutes, and purify to obtain antibacterial component II; wherein the mass ratio of allyl imidazolium, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 5:1:0.06:3:0.3; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, antibacterial component II 5%, silver nitrate 5%, dimethyldiethoxysilane 2%, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 4m / min.

[0041] Based on Example 1, a control experiment was carried out, specifically Comparative Examples 1 to 6, as described below: Comparative Example 1: Comparative Example 1 is based on Example 1, with the following modifications: no antibacterial component I and compatibilizer are added, and other processes remain unchanged, specifically: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of polyester fiber: 1. Add PET slices into a spinning machine, and obtain antibacterial wiping polyester fiber through melt spinning, cooling, winding, forming, bundling, drawing, heat setting, and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 15s; 2. Preparation of antibacterial component II: (1) Add allyl imidazolium, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stir and react at 70°C for 6 hours, and terminate the reaction; (2) Add pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically disperse for 15 minutes, react under ultraviolet light for 30 minutes, and purify to obtain antibacterial component II; wherein the mass ratio of allyl imidazolium, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 4.5:1:0.05:2.8:0.2; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, antibacterial component II 4%, silver nitrate 4%, dimethyldiethoxysilane 1.5%, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 3m / min.

[0042] Comparative Example 2: Comparative Example 2 is based on Example 1, with the following adjustments: no compatibilizer is added, and other processes remain unchanged, specifically: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1.1:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2.1:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly drop the silane hydrolyzate; after the dropwise addition is completed, continue to stir for 8 hours, filter, wash and dry to obtain a thiol-containing product. Silicon dioxide; (2) dispersing mercaptosilicic acid silicon dioxide in anhydrous ethanol to obtain 8 wt% of mercaptosilicic acid silicon dioxide dispersion; adding allyl imidazolium and photoinitiator 819 to the mercaptosilicic acid silicon dioxide dispersion, ultrasonically dispersing for 15 minutes, reacting under ultraviolet light for 30 minutes, filtering and drying to obtain antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4.5% of the amount of silicon dioxide; the mass ratio of mercaptosilicic acid silicon dioxide, allyl imidazolium and photoinitiator 819 is 12:1.1:0.11; 3. After 1.25 parts of antibacterial component I and 23.25 parts of PET chips were mixed evenly, they were added into a twin-screw extruder, and melt blended, extruded, pelletized, and cooled to obtain antibacterial PET masterbatch; wherein the blending temperature was 300°C, the blending time was 25 min, and the screw speed was 400 r / min; 4. After 15 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 15s; 2. Preparation of antibacterial component II: (1) Add allyl imidazolium, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stir and react at 70°C for 6 hours, and terminate the reaction; (2) Add pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically disperse for 15 minutes, react under ultraviolet light for 30 minutes, and purify to obtain antibacterial component II; wherein the mass ratio of allyl imidazolium, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 4.5:1:0.05:2.8:0.2; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, antibacterial component II 4%, silver nitrate 4%, dimethyldiethoxysilane 1.5%, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 3m / min.

[0043] Comparative Example 3: Comparative Example 3 is based on Example 1, with the following modifications: dimethyldiallylammonium chloride (quaternary ammonium salt) is used instead of allyl imidazolium, and other processes remain unchanged, specifically: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly drop the silane hydrolyzate; after the dropwise addition is completed, continue to stir for 8 hours, filter, wash and dry to obtain mercapto silicon dioxide. ; (2) Dispersing thiolated silicon dioxide in anhydrous ethanol to obtain 8 wt% thiolated silicon dioxide dispersion; adding dimethyldiallyl ammonium chloride and photoinitiator 819 to the thiolated silicon dioxide dispersion, ultrasonically dispersing for 15 minutes, reacting under ultraviolet light for 30 minutes, filtering and drying to obtain antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4.5% of the amount of silicon dioxide; the mass ratio of thiolated silicon dioxide, dimethyldiallyl ammonium chloride and photoinitiator 819 is 12:1.1:0.11; 3. After 1.25 parts of antibacterial component I, 23.25 parts of PET chips and 0.5 parts of compatibilizer are mixed evenly, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25 minutes and the screw speed is 400 r / min; 4. After 15 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 15s; 2. Preparation of antibacterial component II: (1) Adding dimethyldiallyl ammonium chloride, tetraallylsilane and diisopropylbenzene peroxide to tetrahydrofuran, stirring and reacting at 70°C for 6 hours, and then terminating the reaction; (2) Adding pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 to (1), ultrasonically dispersing for 15 minutes, reacting under ultraviolet light for 30 minutes, and purifying to obtain antibacterial component II; wherein the mass ratio of dimethyldiallyl ammonium chloride, tetraallylsilane, diisopropylbenzene peroxide, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator 819 is 4.5:1:0.05:2.8:0.2; 3. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: by mass percentage, antibacterial component II 4%, silver nitrate 4%, dimethyldiethoxysilane 1.5%, and the rest is deionized water; 4. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 3m / min.

[0044] Comparative Example 4: Comparative Example 4 is based on Example 1, with the following adjustments: no antibacterial spray liquid is sprayed, and other processes remain unchanged, specifically: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1.1:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2.1:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly drop the silane hydrolyzate; after the dropwise addition is completed, continue to stir for 8 hours, filter, wash and dry to obtain a mercaptopropyltrimethoxysilane. (2) dispersing the mercapto silicon dioxide in anhydrous ethanol to obtain an 8 wt % mercapto silicon dioxide dispersion; adding allyl imidazolium and photoinitiator 819 to the mercapto silicon dioxide dispersion, ultrasonically dispersing for 15 min, reacting under ultraviolet light for 30 min, filtering and drying to obtain an antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4.5% of the amount of silicon dioxide; the mass ratio of mercapto silicon dioxide, allyl imidazolium and photoinitiator is 12:1.1:0.11; 3. After 1.25 parts of antibacterial component I, 23.25 parts of PET chips and 0.5 parts of compatibilizer are mixed evenly, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25 minutes and the screw speed is 400 r / min; 4. After 15 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipe cloth: Weave the antibacterial wipe polyester fiber into the required 15cm×15cm wipe cloth.

[0045] Comparative Example 5: Comparative Example 5 is based on Example 1, with the following adjustments: no antibacterial component II is added to the antibacterial spray liquid, and other processes remain unchanged, specifically: An antibacterial wiping polyester fiber and a wiping cloth prepared therefrom: Step 1: Preparation of antibacterial wipe polyester fiber: 1. Preparation of allyl imidazolium: (1) Dispersing imidazole in dimethylacetamide to obtain a 15 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 9, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 50°C for 12 hours, and purifying to obtain product A; (2) Adding product A, bromododecane, and acetonitrile into a reaction vessel, stirring and reacting at 60°C for 15 hours, and purifying to obtain allyl imidazolium; wherein the mass ratio of imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene, and p-benzoquinone is 1.1:3:0.0015; the mass ratio of product A, bromododecane, and acetonitrile is 1:2.1:6; 2. Preparation of antibacterial component I: (1) Add 3-mercaptopropyltrimethoxysilane, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stir and mix, add acetic acid to adjust the pH to 5.5, and continue to stir and mix for 10 minutes to obtain a silane hydrolyzate; disperse silicon dioxide in anhydrous ethanol to obtain a 50wt% silicon dioxide dispersion; heat the silicon dioxide dispersion to 55°C, and slowly drop the silane hydrolyzate; after the dropwise addition is completed, continue to stir for 8 hours, filter, wash and dry to obtain a mercaptopropyltrimethoxysilane. (2) dispersing the mercapto silicon dioxide in anhydrous ethanol to obtain an 8 wt % mercapto silicon dioxide dispersion; adding allyl imidazolium and photoinitiator 819 to the mercapto silicon dioxide dispersion, ultrasonically dispersing for 15 min, reacting under ultraviolet light for 30 min, filtering and drying to obtain an antibacterial component I; wherein the amount of 3-mercaptopropyltrimethoxysilane is 4.5% of the amount of silicon dioxide; the mass ratio of mercapto silicon dioxide, allyl imidazolium and photoinitiator is 12:1.1:0.11; 3. After 1.25 parts of antibacterial component I, 23.25 parts of PET chips and 0.5 parts of compatibilizer are mixed evenly, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; wherein the blending temperature is 300°C, the blending time is 25 minutes and the screw speed is 400 r / min; 4. After 15 parts of antibacterial PET masterbatch and 100 parts of PET chips are mixed evenly, they are added into a spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wipes: 1. After the antibacterial wiping polyester fiber is woven into the required 15cm×15cm wiping cloth, it is subjected to plasma modification treatment to obtain the wiping cloth to be sprayed; wherein the parameters of the plasma modification treatment are: the discharge gas is argon gas, the gas flow rate is 5L / min, the input power is 200W, the discharge voltage is 10KV, the discharge frequency is 25KHz, and the modification treatment time is 15s; 2. Preparation of antibacterial spray liquid: The antibacterial spray liquid includes the following components: 4% silver nitrate, 1.5% dimethyldiethoxysilane, and the rest is deionized water, calculated by mass percentage; 3. Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth; wherein, the spraying parameters are: the spray gun pressure is 0.4MPa, the spraying distance is 15cm, and the spraying rate is 3m / min.

[0046] Comparative Example 6: Comparative Example 6 is based on Example 1, with the following modifications: No treatment is performed, specifically: Step 1: preparing polyester fiber: adding PET chips into a spinning machine, and obtaining polyester fiber through melt spinning, cooling, winding, forming, bundling, drawing, heat setting, and curling; wherein the spinning parameters are: the spinning metering pump supply is 750g / min, the spinning temperature is 280°C, the spinning speed is 700m / min, and the traction multiple is 3 times; Step 2: Prepare the wiping cloth: Weave the polyester fiber into the required wiping cloth of 15 cm×15 cm.

[0047] Performance test: The wiping cloths prepared in Examples 1 to 3 and Comparative Examples 1 to 6 were subjected to antibacterial performance test, mechanical performance test, and antistatic performance test, as follows: 1. Antibacterial performance test: Staphylococcus aureus and Escherichia coli were used as bacterial species respectively; the wiping cloth corresponding to each example was cut into a φ12mm round cloth, placed in the center of a culture medium inoculated with a certain concentration of bacterial species, placed in a constant temperature culture medium, cultured at 37°C for 24 hours, and the diameter of the inhibition zone was detected; 2. Mechanical properties test: According to the standard of GB / T 3923.1-2013, the wiping cloth corresponding to each example is subjected to a breaking strength test; 3. Antistatic performance test: The volume resistivity of the wiping cloth corresponding to each example is tested to evaluate the antistatic performance of the wiping cloth.

[0048] The specific results of the above test are shown in Table 1 below: Table 1

[0049] Result analysis: From the data in Table 1 above, it can be seen that the wiping cloth prepared by the present invention has obvious antibacterial effects on Staphylococcus aureus and Escherichia coli. Among them, the diameter of the antibacterial zone of Staphylococcus aureus reaches a maximum of 29 mm, and the diameter of the antibacterial zone of Escherichia coli reaches a maximum of 28 mm, which shows excellent antibacterial performance; the maximum breaking strength of the wiping cloth prepared by the present invention reaches 448.86N, which shows excellent mechanical properties; the minimum volume resistivity of the wiping cloth prepared by the present invention reaches 5.0×10 7 Ω·cm, which shows excellent antistatic performance.

[0050] In summary, the present invention comprehensively prepares a wiping cloth with excellent antibacterial properties, mechanical properties and antistatic properties.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An antibacterial wiping polyester fiber, characterized in that: The antibacterial wiping polyester fiber comprises the following components: by weight: Antibacterial PET masterbatch 10~20 parts, PET slices 100 pieces; Wherein, the antibacterial PET masterbatch comprises the following components: by weight, Antibacterial component I 1~1.5 parts, PET slices 23.25 pieces, Compatibilizer 0.25~0.75 parts.

2. The antibacterial wiping polyester fiber according to claim 1, characterized in that: The preparation method of the antibacterial component I is as follows: (1) adding a mercaptosilane coupling agent, deionized water and anhydrous ethanol in a mass ratio of 1:1:10 into a reaction container, stirring and mixing, and adding acetic acid to adjust the pH to 4.5-6, and continuing to stir and mix for 5-15 minutes to obtain a silane hydrolyzate; dispersing silica in anhydrous ethanol to obtain a 50wt% silica dispersion; heating the silica dispersion to 50-60°C, and slowly adding the silane hydrolyzate, and after the addition is completed, continuing to stir for 6-10 hours, filtering, washing and drying to obtain mercapto silica; (2) dispersing mercapto silica in anhydrous ethanol to obtain an 8wt% mercapto silica dispersion; adding allyl imidazolium and a photoinitiator to the mercapto silica dispersion, ultrasonically dispersing for 5-15 minutes, reacting under ultraviolet light for 15-45 minutes, filtering and drying to obtain the antibacterial component I; Among them, the amount of the mercaptosilane coupling agent is 4-5% of the amount of silicon dioxide; the average particle size of the silicon dioxide is 20-30 nm; the mass ratio of the mercaptosilane, allyl imidazolium and photoinitiator is 12:(1-1.2):(0.1-0.12).

3. The antibacterial wiping polyester fiber according to claim 2, characterized in that: The preparation method of allyl imidazolium is as follows: (1) dispersing imidazole in dimethylacetamide to obtain a 10-20 wt% imidazole dispersion; adding sodium hydroxide solution to the imidazole dispersion to adjust the pH to 8-10, then dropping 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone therein, stirring and reacting at 30-60° C. for 6-18 hours, and purifying to obtain product A; (2) adding product A, bromododecane and acetonitrile into a reaction container, stirring and reacting at 50-65° C. for 20-30 hours, and purifying to obtain allyl imidazolium; Among them, the mass ratio of the imidazole, 1-bromo-3,7-dimethyl-2,6-octadiene and p-benzoquinone is (1~1.2):3:(0.001~0.002); the mass ratio of the product A, bromododecane and acetonitrile is 1:(2~2.2):

6.

4. The antibacterial wiping polyester fiber according to claim 1, characterized in that: The compatibilizer is obtained by mixing maleic anhydride grafted methacrylate glycidyl ether and maleic anhydride grafted ethylene octene copolymer in a mass ratio of 1:1; The preparation method of the maleic anhydride grafted methacrylate glycidyl ether is as follows: maleic anhydride, methacrylate glycidyl ether, an initiator, and tetrahydrofuran are added into a reaction container, heated to 200-220° C. under an inert atmosphere, stirred for reaction for 6-18 hours, and purified to obtain the maleic anhydride grafted methacrylate glycidyl ether; The mass ratio of maleic anhydride, glycidyl methacrylate, initiator and tetrahydrofuran is (0.1~0.3):(0.7~1):(0.01~0.05):5; The preparation method of the maleic anhydride grafted ethylene octene copolymer is as follows: maleic anhydride, ethylene octene copolymer, initiator and tetrahydrofuran are added into a reaction container, heated to 200-220° C. under an inert atmosphere, stirred and reacted for 6-18 hours, and purified to obtain the maleic anhydride grafted ethylene octene copolymer; The mass ratio of maleic anhydride, ethylene octene copolymer, initiator and tetrahydrofuran is (0.1~0.3):(0.7~1):(0.01~0.05):

5.

5. The antibacterial wiping polyester fiber according to claim 1, characterized in that: The preparation method comprises the following steps: Step 1: After the antibacterial component I, PET slices and compatibilizer are uniformly mixed according to the formula ratio, the mixture is added into a twin-screw extruder, and the mixture is melt-blended, extruded, pelletized and cooled to obtain an antibacterial PET masterbatch; Step 2: After the antibacterial PET masterbatch and PET chips are evenly mixed according to the formula ratio, they are added into the spinning machine, and the antibacterial wiping polyester fiber is obtained through melt spinning, cooling, winding, forming, bundling, drawing, heat setting and curling.

6. The antibacterial wiping polyester fiber according to claim 5, characterized in that: The blending temperature is 280-310° C., the blending time is 15-30 min, and the screw speed is 300-500 r / min. The spinning parameters are: the spinning metering pump supply is 600-900 g / min, the spinning temperature is 275-290° C., the spinning speed is 500-1000 m / min, and the traction multiple is 1.5-4.5 times.

7. A wiping cloth made of the antibacterial wiping polyester fiber according to any one of claims 1 to 6, characterized in that: The preparation method comprises the following steps: Step 1: After weaving the antibacterial wiping polyester fiber into a wiping cloth of required specifications, the wiping cloth is subjected to plasma modification treatment to obtain a wiping cloth to be sprayed; Step 2: Spray the antibacterial spray liquid onto the wiping cloth to be sprayed, wait for drying, and obtain the antibacterial wiping cloth.

8. The antibacterial wiping cloth made of polyester fiber according to claim 7, characterized in that: The parameters of the plasma modification treatment are: the discharge gas is argon, the gas flow rate is 1~10L / min, the input power is 20~1000W, the discharge voltage is 5~30KV, the discharge frequency is 5~50KHz, and the modification treatment time is 5~30s.

9. The antibacterial wiping cloth made of polyester fiber according to claim 7, characterized in that: The antibacterial spray liquid comprises the following components: by mass percentage, Antibacterial component II 3~5%, Silver nitrate 3~5%, Silane coupling agent 1~2%, the rest is deionized water.

10. The antibacterial wiping cloth made of polyester fiber according to claim 9, characterized in that: The preparation method of the antibacterial component II is as follows: (1) adding allyl imidazolium, tetraallylsilane and an initiator to tetrahydrofuran, stirring and reacting at 65-80° C. for 4-10 hours, and then terminating the reaction; (2) adding pentaerythritol tetrakis-3-mercaptopropionate and a photoinitiator to (1), ultrasonically dispersing for 5-15 minutes, reacting under ultraviolet light for 15-45 minutes, and purifying to obtain the antibacterial component II; The mass ratio of the allyl imidazolium, tetraallylsilane, initiator, pentaerythritol tetrakis-3-mercaptopropionate and photoinitiator is (4-5):1:(0.03-0.06):(2.5-3):(0.1-0.3).

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