Dustproof antistatic acoustic mesh cloth and preparation method thereof

Abstract

The application discloses a kind of dustproof antistatic acoustic mesh cloth and preparation method thereof, it is related to textile technical field.The dustproof antistatic acoustic mesh cloth prepared by the application includes 10-20 parts of self-made PET polyester filament, 8-18 parts of propylene base fiber, 30-100 parts of silver ammonia solution;Amino carbon nanotube is mixed with polyethylene terephthalate and is spun first, to form polyimide-carbon nanotube conductive path, and self-made PET polyester filament is prepared;Self-made PET polyester filament and propylene base fiber are twisted and woven, and silver ammonia solution is used for electro-roller, to form micro-nano structure, and dustproof antistatic acoustic mesh cloth is prepared;The dustproof antistatic acoustic mesh cloth prepared by the application has strong antistatic property, waterproof and dustproof property and antibacterial property.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to a dustproof and antistatic acoustic mesh cloth and a preparation method thereof. BACKGROUND

[0002] The acoustic mesh cloth refers to a textile used on an in-out sound device for dustproof, covering, adjusting air flow speed, etc.

[0003] At present, all consumer electronic products with acoustic functions are often used at the sound outlet position, such as microphones, loudspeakers, earpieces, and acoustic mesh cloths are used to achieve the protection of loudspeakers and microphones. In the use process, the acoustic mesh cloth is required to prevent external pollutants such as dust, metal dust, water, oil and cosmetics, and the acoustic mesh cloth needs to be antibacterial and mildewproof. At the same time, because the electronic products often generate static electricity when used, which leads to the decline of the use feeling of the electronic products and the service life of the acoustic mesh cloth. Therefore, it has become a technical problem to be solved in the current technical field to prepare a waterproof and dustproof, antistatic acoustic mesh cloth. SUMMARY

[0004] The present application aims to provide a dustproof and antistatic acoustic mesh cloth and a preparation method thereof to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the present application provides the following technical solutions:

[0006] A dustproof and antistatic acoustic mesh cloth, by weight, comprising 10-20 parts of self-made PET polyester yarn, 8-18 parts of propylene-based fiber, and 30-100 parts of silver ammonia solution; the dustproof and antistatic acoustic mesh cloth is prepared by co-twisting and weaving the self-made PET polyester yarn and the propylene-based fiber and using the silver ammonia solution for electro-impregnation.

[0007] Further, the self-made PET polyester yarn comprises 1-6 parts of amino carbon nanotubes and 10-20 parts of polyethylene terephthalate.

[0008] Further, a preparation method of a dustproof and antistatic acoustic mesh cloth mainly comprises the following preparation steps:

[0009] (1) under the conditions of 2-6℃ and argon protection, polyethylene terephthalate, amino carbon nanotubes and dimethylformamide are mixed in a mass ratio of 1:0.1:10-1:0.3:20, ultrasonic treatment is performed at 30-40 kHz for 20-40 min, stirring is performed at 400-600 r / min for 1-3 h, the mixture is placed in a spinning box at 300-302℃, spinning is performed using a screw extruder at a spinning speed of 800-1000 m / min, side-blowing air cooling and solidification are performed at 10-20℃, humidity of 60-80% and air speed of 0.9-1.3 m / s for 25-35 min, and 8-12 tex self-made PET polyester yarn is prepared;

[0010] (2) the propylene-based polymer is placed in a spinning box at 140-160℃, spinning is performed using a screw extruder at a spinning speed of 800-1000 m / min, side-blowing air cooling and solidification are performed at 10-20℃, humidity of 60-80% and air speed of 0.9-1.3 m / s for 25-35 min, and 8-12 tex propylene-based fiber is prepared;

[0011] (3) the self-made PET polyester yarn and the propylene-based fiber are co-twisted and knitted in a mass ratio of 1:8-1:9, silver ammine solution is added in an amount of 3-5 times the mass of the self-made PET polyester yarn, stirring is continued for 40-60 min, the temperature is raised to 60-80℃, ethylenediamine is added in an amount of 0.3-0.34 times the mass of the self-made PET polyester yarn, stirring is continued for 4-6 h, the temperature is lowered to 0-4℃, sodium nitrite solution is added in an amount of 3-5 times the mass of the self-made PET polyester yarn, stirring is continued for 1-3 h, the temperature is raised to 30-40℃, tetrabutylammonium bromide is added in an amount of 0.3-0.5 times the mass of the self-made PET polyester yarn, stirring is continued for 6-8 h, electric treatment is performed at 60-80℃ and 3-4 MPa for 50-70 min, the product is washed with anhydrous ethanol and deionized water for 2-4 times, the product is placed in an oven at 55-65℃ for 40-60 min, and a dustproof and antistatic acoustic mesh cloth is prepared.

[0012] Further, the preparation method of the amino-functionalized carbon nanotubes in step (1) is as follows: 2-carboxyl-4-amino-chlorobenzene and diethyl ether are mixed at a mass ratio of 1:2-1:4 at 60-80°C under argon protection, 1.2-1.4 times the mass of 2-carboxyl-4-amino-chlorobenzene of 20% sodium hydroxide solution is added, and stirring is carried out at 400-600 r / min for 1-3 h, then 1.6-1.8 times the mass of 2-carboxyl-4-amino-chlorobenzene of concentrated sulfuric acid is added dropwise at a rate of 40-60 drops / min, 1-3 times the mass of 2-carboxyl-4-amino-chlorobenzene of cyanoacetic acid is added, and stirring is continued for 1-3 h to obtain phenyl cyanoacetate; carbon nanotubes and concentrated sulfuric acid are mixed at a mass ratio of 1:210-1:230, and ultrasonic treatment is carried out at 30-40 kHz for 20-40 min, then 55-57 times the mass of carbon nanotubes of 68% concentrated nitric acid is added, stirring is carried out at 1200-1400 r / min for 9-11 min, the temperature is raised to 58-62°C, and stirring is continued for 1.5-2.5 h, 98-102 times the mass of carbon nanotubes of deionized water is added for dilution, and standing is carried out for 3.5-4.5 h, then a microporous filter membrane with a pore size of 220 nm is used for vacuum filtration, deionized water is used for washing until the pH of the filtrate is 7, then anhydrous ethanol is used for washing 2-4 times, and the mixture is placed in an oven at 55-65°C for 40-60 min, then the mixture is added to 20-30 times the mass of carbon nanotubes of diethyl ether, ultrasonic treatment is carried out at 30-40 kHz for 20-40 min, 0.8-1 times the mass of the acidified carbon nanotubes of phenyl cyanoacetate is added, 0.6-0.8 times the mass of the acidified carbon nanotubes of concentrated sulfuric acid is added dropwise at a rate of 40-60 drops / min, the temperature is raised to 60-80°C, and stirring is continued for 1-3 h, then filtration is carried out, the filter cake is washed with anhydrous ethanol and deionized water 2-4 times, respectively, and the filter cake is placed in an oven at 55-65°C for 40-60 min to obtain the amino-functionalized carbon nanotubes.

[0013] Further, the preparation method of the polyethylene terephthalate in step (1) is as follows: chlorohydrin and tetracarbonitrile are mixed at a mass ratio of 1:2.5-1:3.5 under argon protection, 0.06-0.08 times the mass of chlorohydrin of aluminum chloride is added, the temperature is lowered to -10-0°C, and stirring is carried out at 400-600 r / min for 6-8 h, then 0.8-1.2 times the mass of chlorohydrin of concentrated sulfuric acid is added dropwise at a rate of 40-60 drops / min, the temperature is raised to 60-80°C, 0.6-1 times the mass of chlorohydrin of terephthalic acid is continuously added, and stirring is continued for 2-4 h to obtain the polyethylene terephthalate.

[0014] Further, the preparation method of the propylene-based polymer in step (2) is as follows: under the protection of argon, polychloropropylene and 2-(2-nitrophenyl) propandial are mixed uniformly at a mass ratio of 1:1.2-1:1.6, 0.06-0.08 times the mass of chloroethandiol of aluminum chloride is added, the temperature is reduced to-10-0 DEG C, stirring is carried out at 400-600 r / min for 6-8 h, 0.08-0.12 times the mass of polychloropropylene of nickel is added, the pressure is increased to 1-3 MPa, 3-5 times the mass of polychloropropylene of hydrogen is introduced at 1-2 m 3 / h, and the propylene-based polymer is prepared.

[0015] Further, the preparation method of the silver-ammonia solution in step (3) is as follows: 40-60 drops / min of 2% ammonia water is added to 2% silver nitrate solution until the precipitation is dissolved, and the silver-ammonia solution is prepared.

[0016] Further, the current density of the electric treatment in step (3) is 200-400 A*m -2 , and the potential is 1.5-1.7 V.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] In the preparation of the dustproof and antistatic acoustic mesh cloth, the amino-functionalized carbon nanotube and polyethylene terephthalate are mixed to spin, the self-made PET polyester yarn is prepared, the self-made PET polyester yarn and the propylene-based fiber are co-twisted and woven, and the silver-ammonia solution is used for electro-dip padding, and the dustproof and antistatic acoustic mesh cloth is prepared.

[0019] Firstly, the amino-functionalized carbon nanotube is introduced into the polyethylene terephthalate, and the conductivity of the self-made PET polyester yarn is enhanced; the cyano group on the polyethylene terephthalate is hydrolyzed to form perylenetetracarboxylic acid, the perylenetetracarboxylic acid reacts with the amino group on the amino-functionalized carbon nanotube to form polyimide, and the polyimide and the carbon nanotube form a polyimide-carbon nanotube conductive path, and the antistatic property of the self-made PET polyester yarn is further enhanced.

[0020] Secondly, when the silver ammine solution is introduced for antibacterial finishing, the propandialdehyde on the propylene-based fiber, the phenyl cyanoacetate on the self-made PET terylene yarn and the ammonia in the silver ammine solution react to form cyanopyridine. The introduction of sodium nitrite makes the amino group on the propylene-based fiber diazotized and react with the cyanopyridine to form bipyridine triazole. The bipyridine triazole quickly captures silver ions to form bipyridine triazole silver complex. The silver ions in the silver ammine solution are reduced to form silver nanoparticles. The silver nanoparticles are deposited on the surface of the dustproof and antistatic acoustic mesh cloth and connected to the bipyridine triazole silver complex through a metal bond to form a large number of micro-nano structures on the surface of the dustproof and antistatic acoustic mesh cloth. When water droplets are on the surface of the dustproof and antistatic acoustic mesh cloth, the water droplets roll and adhere to the dust and other stains on the surface of the dustproof and antistatic acoustic mesh cloth, thereby enhancing the waterproof and dustproof performance of the dustproof and antistatic acoustic mesh cloth. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0022] In order to more clearly illustrate the method provided by the present application, the following embodiments are described in detail. The test methods of various indexes of the dustproof and antistatic acoustic mesh cloth prepared in the following embodiments are as follows:

[0023] Antistatic property: Take the same mass of the dustproof and antistatic acoustic mesh cloth prepared in the examples and the comparative examples, and test the surface charge density according to the C method (charge surface density method) in GB / T12703;

[0024] Waterproof and dustproof property: Take the same mass of the dustproof and antistatic acoustic mesh cloth prepared in the examples and the comparative examples, and measure the water contact angle with a hydrophobic angle measuring instrument.

[0025] Example 1

[0026] (1) 60℃ and argon protection conditions, 2-carboxyl-4-amino chlorobenzene and diethyl ether were mixed according to the mass ratio of 1:2, 2-carboxyl-4-amino chlorobenzene was added to 1.2 times of the mass fraction of 20% sodium hydroxide solution, stirred at 400 r / min for 1 h, then 2-carboxyl-4-amino chlorobenzene was added dropwise at 40 drops / min, 2-carboxyl-4-amino chlorobenzene was added to 1.6 times of the mass fraction of concentrated sulfuric acid, 2-carboxyl-4-amino chlorobenzene was added to 1 times of cyanacetic acid, and the stirring was continued for 1 h to prepare phenyl cyanacetate; carbon nanotubes and concentrated sulfuric acid were mixed according to the mass ratio of 1:210, ultrasonic was performed at 30 kHz for 20 min, then 55 times of the mass fraction of 68% concentrated nitric acid was added to the carbon nanotubes, stirred at 1200 r / min for 9 min, heated to 58℃, and the stirring was continued for 1.5 h, then 98 times of deionized water was added to dilute the carbon nanotubes, and the mixture was left to stand for 3.5 h, then the mixture was vacuum filtered by using a microporous filter membrane with a pore size of 220 nm, washed with deionized water until the pH of the filtrate was 7, then washed twice with anhydrous ethanol, placed in a 55℃ oven and baked for 40 min, then added to 20 times of the mass fraction of ethyl ether, ultrasonic was performed at 30 kHz for 20 min, 0.8 times of the mass fraction of phenyl cyanacetate was added to the acidified carbon nanotubes, 0.6 times of the mass fraction of concentrated sulfuric acid was added dropwise to the acidified carbon nanotubes at 40 drops / min, heated to 60℃, and the stirring was continued for 1 h, then filtered, washed twice with anhydrous ethanol and deionized water respectively, placed in a 55℃ oven and baked for 40 min to prepare amino-functionalized carbon nanotubes;

[0027] (2) Argon protection conditions, chloroethanediol and benzene-1, 4-tetracarbonitrile were mixed according to the mass ratio of 1:2.5, 0.06 times of the mass fraction of aluminum chloride was added to the chloroethanediol, the temperature was reduced to-10℃, and the stirring was continued for 6 h, then 0.8 times of the mass fraction of concentrated sulfuric acid was added dropwise to the chloroethanediol at 40 drops / min, the temperature was increased to 60℃, 0.6 times of the mass fraction of terephthalic acid was added dropwise to the chloroethanediol, and the stirring was continued for 2 h to prepare polyethylene terephthalate;

[0028] (3) 2℃ and argon protection conditions, polyethylene terephthalate, amino-functionalized carbon nanotubes and dimethylformamide were mixed according to the mass ratio of 1:0.1:10, ultrasonic was performed at 30 kHz for 20 min, then stirred at 400 r / min for 1 h, placed in a 300℃ spinning box, and spun by using a screw extruder under the condition of a spinning speed of 800 m / min, then side-blowing air cooling and solidification were performed under the condition of 10℃, humidity of 60% and air speed of 0.9 m / s for 25 min to prepare 8 tex self-made PET polyester yarn;

[0029] (4) Under the condition of argon protection, polyvinyl chloride and 2-(2-nitrophenyl) propandial are mixed uniformly according to the mass ratio of 1:1.2, 0.06 times of aluminum chloride of the mass of chloroethanediol is added, the temperature is reduced to-10℃, stirring at 400r / min for 6h, 0.08 times of nickel of the mass of polyvinyl chloride is added, the pressure is increased to 1MPa, 3 times of hydrogen of the mass of polyvinyl chloride is introduced at 1m 3 / h, and a propylene-based polymer is prepared; the propylene-based polymer is placed in a spinning box at 140℃, and is spun using a screw extruder at a spinning speed of 800m / min, and is cooled and solidified by side blowing at 10℃, humidity of 60% and wind speed of 0.9m / s for 25min, and an 8tex propylene-based fiber is prepared;

[0030] (5) 2% ammonia water is added to 2% silver nitrate solution at a rate of 40 drops / min until the precipitate dissolves, and a silver ammonia solution is prepared; self-made PET polyester yarn and propylene-based fiber are co-twisted and knitted according to the mass ratio of 1:8, 3 times of silver ammonia solution of the mass of self-made PET polyester yarn is added, and stirring is continued for 40min, the temperature is increased to 60℃, 0.3 times of ethylenediamine of the mass of self-made PET polyester yarn is added, and stirring is continued for 4h, the temperature is reduced to 0℃, 3 times of sodium nitrite solution of the mass of self-made PET polyester yarn is added, and stirring is continued for 1h, the temperature is increased to 30℃, 0.3 times of tetrabutylammonium bromide of the mass of self-made PET polyester yarn is added, and stirring is continued for 6h, and the product is treated by electricity at 60℃ and 3MPa for 50min at a current density of 200A / m -2 , a voltage of 1.5V, and is washed with anhydrous ethanol and deionized water for 2 times, and is placed in an oven at 60℃ for 50min, and a dustproof and antistatic acoustic mesh cloth is prepared.

[0031] Example 2

[0032] (1) 70℃ and argon protection conditions, 2-carboxyl-4-amino chlorobenzene and diethyl ether were mixed according to the mass ratio of 1:3, 2-carboxyl-4-amino chlorobenzene was added to the mass fraction of 20% sodium hydroxide solution with 1.3 times the mass, stirred at 500 r / min for 2h, then 2-carboxyl-4-amino chlorobenzene was added dropwise at 50 drops / min, 2-carboxyl-4-amino chlorobenzene was added to the mass of 1.7 times the concentrated sulfuric acid, 2-carboxyl-4-amino chlorobenzene was added to the mass of 2 times the cyanacetic acid, and the stirring was continued for 2h, to prepare phenyl cyanacetate; carbon nanotubes and concentrated sulfuric acid were mixed according to the mass ratio of 1:220, ultrasonic was performed at 35 kHz for 30 min, then carbon nanotubes were added to the mass of 56 times the mass fraction of 68% concentrated nitric acid, stirred at 1300 r / min for 10 min, heated to 60℃, and continued to stir for 2h, carbon nanotubes were added to the mass of 100 times the deionized water for dilution, and placed for 4h, then microfiltration membrane with a pore size of 220 nm was used for vacuum filtration, washed with deionized water until the pH of the filtrate was 7, then washed with anhydrous ethanol for 3 times, placed in a 50℃ oven and dried for 50 min, then added to the carbon nanotubes in the mass of 25 times the ether, ultrasonic was performed at 35 kHz for 30 min, phenyl cyanacetate was added to the mass of 0.9 times the acidified carbon nanotubes, concentrated sulfuric acid was added dropwise at 50 drops / min, the acidified carbon nanotubes were added to the mass of 0.7 times, heated to 70℃, and continued to stir for 2h, filtered, washed with anhydrous ethanol and deionized water for 3 times respectively, placed in a 60℃ oven and dried for 50 min, to prepare amino-functionalized carbon nanotubes;

[0033] (2) Argon protection conditions, chloroethanediol and benzene-1, 4-tetracarbonitrile were mixed according to the mass ratio of 1:3, aluminum chloride was added to the mass of 0.07 times the chloroethanediol, cooled to-5℃, stirred at 500 r / min for 7h, then concentrated sulfuric acid was added dropwise at 50 drops / min, the chloroethanediol was added to the mass of 1 times, p-phthalic acid was added to the mass of 0.8 times the chloroethanediol, and the stirring was continued for 3h, to prepare polyethylene terephthalate;

[0034] (3) 4℃ and argon protection conditions, polyethylene terephthalate, amino-functionalized carbon nanotubes, and dimethylformamide were mixed according to the mass ratio of 1:0.2:15, ultrasonic was performed at 35 kHz for 30 min, then stirred at 500 r / min for 2h, placed in a 301℃ spinning box, and spun using a screw extruder at a spinning speed of 900 m / min, cooled and solidified by side blowing at 15℃, humidity of 70% and wind speed of 1.1 m / s for 30 min, to prepare 10 tex self-made PET polyester yarn;

[0035] (4) Under the condition of argon protection, poly chloropropylene and 2-(2-nitrophenyl) propionaldehyde were mixed uniformly according to the mass ratio of 1:1.4, 0.07 times of aluminum chloride of the mass of chloroethanediol was added, the temperature was reduced to-5℃, and the stirring was carried out at 500 r / min for 7h, 0.1 times of nickel of the mass of poly chloropropylene was added, the pressure was increased to 2MPa, 4 times of hydrogen of the mass of poly chloropropylene was introduced at 1.5m 3 / h, and a propylene-based polymer was prepared; the propylene-based polymer was placed in a spinning box at 150℃, and the spinning was carried out using a screw extruder at a spinning speed of 900m / min, and the side-blowing air cooling and solidification were carried out at 15℃, humidity of 70% and wind speed of 1.1m / s for 30min, and a 10tex propylene-based fiber was prepared;

[0036] (5) 2% of ammonia water was added dropwise to 2% of silver nitrate solution at 50 drops / min until the precipitation was dissolved, and a silver ammonia solution was prepared; the self-made PET polyester yarn and propylene-based fiber were co-twisted and woven according to the mass ratio of 1:8.5, 4 times of silver ammonia solution of the mass of self-made PET polyester yarn was added, and the stirring was continued for 50min, the temperature was increased to 70℃, 0.32 times of ethylenediamine of the mass of self-made PET polyester yarn was added, and the stirring was continued for 5h, the temperature was reduced to 2℃, 4 times of sodium nitrite solution of the mass of self-made PET polyester yarn was added, and the stirring was continued for 2h, the temperature was increased to 35℃, 0.4 times of tetrabutylammonium bromide of the mass of self-made PET polyester yarn was added, and the stirring was continued for 7h, and the electroprocessing was carried out at 70℃ and 3.5MPa for 60min at a current density of 300A / m -2 , a voltage of 1.6V, and the fabric was washed with anhydrous ethanol and deionized water for 3 times, and was placed in a 60℃ oven for 50min, and a dustproof and antistatic acoustic mesh fabric was prepared.

[0037] Example 3

[0038] (1) 80℃ and argon protection conditions, 2-carboxyl-4-amino chlorobenzene and diethyl ether were mixed according to the mass ratio of 1:4, 2-carboxyl-4-amino chlorobenzene was added to the mass fraction of 20% sodium hydroxide solution with 1.4 times the mass, stirred at 600 r / min for 3h, then 2-carboxyl-4-amino chlorobenzene was added dropwise at 60 drops / min with 1.8 times the mass of concentrated sulfuric acid, 2-carboxyl-4-amino chlorobenzene was added with 3 times the mass of cyanoacetic acid, and the stirring was continued for 3h to prepare phenyl cyanoacetate; carbon nanotubes and concentrated sulfuric acid were mixed according to the mass ratio of 1:230, ultrasonic was performed at 40kHz for 40min, then 57 times the mass of concentrated nitric acid with a mass fraction of 68% was added, stirred at 1400r / min for 11min, heated to 62℃, and continued to stir for 2.5h, diluted with 102 times the mass of deionized water, and placed for 4.5h, then filtered with a microporous filter membrane with a pore size of 220nm, washed with deionized water until the pH of the filtrate was 7, then washed with anhydrous ethanol for 4 times, placed in a 65℃ oven and baked for 60min, then added to 30 times the mass of ethyl ether of carbon nanotubes, ultrasonic was performed at 40kHz for 40min, added 1 times the mass of phenyl cyanoacetate to the acidified carbon nanotubes, added dropwise 0.8 times the mass of concentrated sulfuric acid to the acidified carbon nanotubes at 60 drops / min, heated to 80℃, and continued to stir for 3h, filtered, washed with anhydrous ethanol and deionized water for 4 times respectively, placed in a 65℃ oven and baked for 60min to prepare amino-functionalized carbon nanotubes;

[0039] (2) Argon protection conditions, chloroethanediol and benzene-1, 4-tetracarbonitrile were mixed according to the mass ratio of 1:3.5, 0.08 times the mass of aluminum chloride was added to chloroethanediol, the temperature was reduced to 0℃, and the stirring was performed at 600 r / min for 8h, then 1.2 times the mass of concentrated sulfuric acid was added to chloroethanediol dropwise at 60 drops / min, the temperature was increased to 80℃, 1 times the mass of terephthalic acid was added to chloroethanediol, and the stirring was continued for 4h to prepare polyethylene terephthalate;

[0040] (3) 6℃ and argon protection conditions, polyethylene terephthalate, amino-functionalized carbon nanotubes, and dimethylformamide were mixed according to the mass ratio of 1:0.3:20, ultrasonic was performed at 40kHz for 40min, then stirred at 600 r / min for 3h, placed in a 302℃ spinning box, and spun using a screw extruder at a spinning speed of 1000m / min, then side-blowing air cooling and solidification were performed at 20℃, humidity of 80% and air speed of 1.3m / s for 35min to prepare 12tex self-made PET polyester yarn;

[0041] (4) Under the condition of argon protection, polychloropropylene and 2-(2-nitrophenyl) propylene glycol were mixed uniformly at a mass ratio of 1:1.6, aluminum chloride with a mass of 0.08 times that of chlorohydrin was added, the temperature was reduced to 0°C, and stirring was carried out at 600 r / min for 8 h, then nickel with a mass of 0.12 times that of polychloropropylene was added, the pressure was increased to 3 MPa, and hydrogen with a mass of 5 times that of polychloropropylene was introduced at a rate of 2 m 3 / h, and a propylene-based polymer was prepared; the propylene-based polymer was placed in a 160°C spinning box, and spinning was carried out using a screw extruder at a spinning speed of 1000 m / min, and side-blowing air cooling and solidification were carried out at 20°C, a humidity of 80%, and a wind speed of 1.3 m / s for 35 min, and a 12 tex propylene-based fiber was prepared;

[0042] (5) Silver ammonia solution was prepared by adding 2% ammonia water with a mass fraction of 2% to a 2% silver nitrate solution at a rate of 60 drops / min until the precipitate dissolved; self-made PET polyester yarn and propylene-based fiber were co-twisted at a mass ratio of 1:9, and woven, silver ammonia solution with a mass of 5 times that of the self-made PET polyester yarn was added, and stirring was continued for 60 min, the temperature was increased to 80°C, ethylenediamine with a mass of 0.34 times that of the self-made PET polyester yarn was added, and stirring was continued for 6 h, the temperature was reduced to 4°C, sodium nitrite solution with a mass of 5 times that of the self-made PET polyester yarn was added, and stirring was continued for 3 h, the temperature was increased to 40°C, tetrabutylammonium bromide with a mass of 0.5 times that of the self-made PET polyester yarn was added, and stirring was continued for 8 h, and electroprocessing was carried out at 80°C and 4 MPa for 70 min at a current density of 400 A / m -2 , a voltage of 1.7 V, and the product was washed with anhydrous ethanol and deionized water 4 times in sequence, and then placed in a 65°C oven for 60 min, and a dustproof and antistatic acoustic mesh cloth was prepared.

[0043] Comparative Example 1

[0044] (1) Under the condition of argon protection, chlorohydrin and melumine were mixed uniformly at a mass ratio of 1:3, aluminum chloride with a mass of 0.07 times that of chlorohydrin was added, the temperature was reduced to -5°C, and stirring was carried out at 500 r / min for 7 h, then concentrated sulfuric acid with a mass of 1 times that of chlorohydrin was added dropwise at a rate of 50 drops / min, the temperature was increased to 70°C, terephthalic acid with a mass of 0.8 times that of chlorohydrin was continuously added dropwise, and stirring was continued for 3 h, and polyethylene terephthalate was prepared;

[0045] (2) Under the condition of 4°C and argon protection, polyethylene terephthalate and dimethylformamide were mixed at a mass ratio of 1:10, ultrasonic treatment was carried out at 35 kHz for 30 min, then stirring was carried out at 500 r / min for 2 h, the product was placed in a 301°C spinning box, and spinning was carried out using a screw extruder at a spinning speed of 900 m / min, and side-blowing air cooling and solidification were carried out at 15°C, a humidity of 70%, and a wind speed of 1.1 m / s for 30 min, and a 10 tex self-made PET polyester yarn was prepared.

[0046] (3) Under the condition of argon protection, polyvinyl chloride and 2-(2-nitrophenyl) propandial are mixed uniformly according to the mass ratio of 1:1.4, 0.07 times of aluminum chloride of the mass of chloroethanediol is added, the temperature is reduced to-5℃, stirring at 500r / min for 7h, 0.1 times of nickel of the mass of polyvinyl chloride is added, the pressure is increased to 2MPa, 1.5m 3 / h of hydrogen gas of 4 times of the mass of polyvinyl chloride is introduced, and a propylene-based polymer is prepared; the propylene-based polymer is placed in a spinning box at 150℃, and is spun using a screw extruder at a spinning speed of 900m / min, and is cooled and solidified by side blowing at 15℃, humidity of 70% and wind speed of 1.1m / s for 30min, and a 10tex propylene-based fiber is prepared;

[0047] (4) 2% ammonia water is added to 2% silver nitrate solution at a rate of 50 drops / min until the precipitate dissolves, and a silver ammonia solution is prepared; self-made PET polyester yarn and propylene-based fiber are co-twisted and knitted according to the mass ratio of 1:8.5, 4 times of the silver ammonia solution of the mass of self-made PET polyester yarn is added, and stirring is continued for 50min, the temperature is increased to 70℃, 0.32 times of ethylenediamine of the mass of self-made PET polyester yarn is added, and stirring is continued for 5h, the temperature is reduced to 2℃, 4 times of sodium nitrite solution of the mass of self-made PET polyester yarn is added, and stirring is continued for 2h, the temperature is increased to 35℃, 0.4 times of tetrabutylammonium bromide of the mass of self-made PET polyester yarn is added, and stirring is continued for 7h, and the product is treated by electricity at 70℃ and 3.5MPa for 60min at a current density of 300A / m -2 , a voltage of 1.6V, and is washed with anhydrous ethanol and deionized water for 3 times, and is placed in an oven at 60℃ for 50min, and a dustproof and antistatic acoustic mesh cloth is prepared.

[0048] Comparative Example 2

[0049] (1) 70℃ and argon protection conditions, 2-carboxyl-4-amino chlorobenzene and ether mixed according to the mass ratio of 1:3, 2-carboxyl-4-amino chlorobenzene mass 1.3 times the mass fraction of 20% sodium hydroxide solution, stirring at 500 r / min for 2h, then 2-carboxyl-4-amino chlorobenzene mass 1.7 times of concentrated sulfuric acid was added dropwise at 50 drops / min, 2-carboxyl-4-amino chlorobenzene mass 2 times of cyanoacetic acid, continue to stir for 2h, prepared to get cyanoacetate phenyl ester; carbon nanotubes and concentrated sulfuric acid mixed according to the mass ratio of 1:220, ultrasonic at 35 kHz for 30 min, then added carbon nanotube mass 56 times of mass fraction of 68% concentrated nitric acid, stirring at 1300 r / min for 10 min, heated to 60℃, continue to stir for 2h, added carbon nanotube mass 100 times of deionized water dilution, standing for 4h, again with pore size of 220 nm microporous filter membrane vacuum filtration, washed with deionized water until the filtrate pH is 7, then washed with anhydrous ethanol for 3 times, put into 50℃ oven drying 50 min, then added to the carbon nanotube mass 25 times of ether, ultrasonic at 35 kHz for 30 min, added acidified carbon nanotube mass 0.9 times of cyanoacetate phenyl ester, acidified carbon nanotube mass 0.7 times of concentrated sulfuric acid was added dropwise at 50 drops / min, heated to 70℃, continue to stir for 2h, filtration, washed with anhydrous ethanol and deionized water for 3 times respectively, put into 60℃ oven drying 50 min, prepared aminated carbon nanotube;

[0050] (2) 4℃ and argon protection conditions, PET, aminated carbon nanotube, dimethylformamide mixed according to the mass ratio of 1:0.2, ultrasonic at 35 kHz for 30 min, then stirring at 500 r / min for 2h, put into 301℃ spinning box, using screw extruder to spin under the condition of 900 m / min spinning speed, side blowing cooling solidification for 30 min under the condition of 15℃, humidity of 70% and wind speed of 1.1 m / s, prepared 10 tex self-made PET polyester filament;

[0051] (3) argon protection conditions, poly chloropropylene and 2-(2-nitrophenyl) propylene mixed uniformly according to the mass ratio of 1:1.4, added chlorohydrin mass 0.07 times of aluminum chloride, cooled to -5℃, stirring at 500 r / min for 7h, added poly chloropropylene mass 0.1 times of nickel, pressurized to 2 MPa, added poly chloropropylene mass 4 times of hydrogen, prepared propylene polymer; put the propylene polymer into 150℃ spinning box, using screw extruder to spin under the condition of 900 m / min spinning speed, side blowing cooling solidification for 30 min under the condition of 15℃, humidity of 70% and wind speed of 1.1 m / s, prepared 10 tex propylene-based fiber; 3

[0052] ​(4) 2% silver nitrate solution was prepared by adding 2% ammonia water with a mass fraction of 50 drops / min to 2% silver nitrate solution until the precipitate dissolved; the self-made PET polyester yarn and propylene-based fiber were twisted and woven according to a mass ratio of 1:8.5, 4 times the mass of the self-made PET polyester yarn was added to the silver ammonia solution, and the stirring was continued for 50 min; the temperature was raised to 70°C, 0.32 times the mass of the self-made PET polyester yarn was added to ethylenediamine, and the stirring was continued for 5 h; the temperature was lowered to 2°C, 4 times the mass of the self-made PET polyester yarn was added to sodium nitrite solution, and the stirring was continued for 2 h; the temperature was raised to 35°C, 0.4 times the mass of the self-made PET polyester yarn was added to tetrabutylammonium bromide, and the stirring was continued for 7 h; the current density was 300 A / m2, the voltage was 1.6 V, and the electrochemical treatment was carried out at 70°C and 3.5 MPa for 60 min; the product was washed with anhydrous ethanol and deionized water for 3 times, respectively, and was placed in a 60°C oven for 50 min to prepare the dustproof and antistatic acoustic mesh cloth. -2

[0053] Comparative Example 3

[0054] (1) 2-carboxyl-4-amino chlorobenzene and ether were mixed according to a mass ratio of 1:3 under the condition of 70°C and argon protection, 1.3 times the mass of 2-carboxyl-4-amino chlorobenzene was added to a 20% sodium hydroxide solution with a mass fraction, and stirred at 500 r / min for 2 h, then 1.7 times the mass of 2-carboxyl-4-amino chlorobenzene was added dropwise to concentrated sulfuric acid at a rate of 50 drops / min, 2 times the mass of 2-carboxyl-4-amino chlorobenzene was added to cyanoacetic acid, and the stirring was continued for 2 h to prepare phenyl cyanoacetate; carbon nanotubes and concentrated sulfuric acid were mixed according to a mass ratio of 1:220, and were ultrasonically treated at 35 kHz for 30 min, then 56 times the mass of the carbon nanotubes was added to concentrated nitric acid with a mass fraction of 68%, and was stirred at 1300 r / min for 10 min, the temperature was raised to 60°C, and the stirring was continued for 2 h, then the carbon nanotubes were diluted with 100 times the mass of deionized water, and were left to stand for 4 h, then were vacuum filtered with a microporous filter membrane with a pore size of 220 nm, were washed with deionized water until the pH of the filtrate was 7, then were washed with anhydrous ethanol for 3 times, were placed in a 50°C oven for 50 min, then were added to ether with 25 times the mass of the carbon nanotubes, were ultrasonically treated at 35 kHz for 30 min, 0.9 times the mass of the acidified carbon nanotubes was added to phenyl cyanoacetate, 0.7 times the mass of the acidified carbon nanotubes was added dropwise to concentrated sulfuric acid at a rate of 50 drops / min, the temperature was raised to 70°C, and the stirring was continued for 2 h, then were filtered, were washed with anhydrous ethanol and deionized water for 3 times, respectively, and were placed in a 60°C oven for 50 min to prepare amino-functionalized carbon nanotubes;

[0055] ​(2) Under the condition of argon protection, chloroethanediol and benzene-1, 2, 4, 5-tetracarbonitrile were mixed uniformly according to the mass ratio of 1:3, 0.07 times the mass of chloroethanediol of aluminum chloride was added, the temperature was reduced to-5℃, and stirring was carried out at 500 r / min for 7 h, then 1 times the mass of chloroethanediol of concentrated sulfuric acid was added dropwise at 50 drops / min, the temperature was raised to 70℃, 0.8 times the mass of chloroethanediol of terephthalic acid was continuously added dropwise, and stirring was continued for 3 h, to prepare polyethylene terephthalate;

[0056] (3) Under the condition of 4℃ and argon protection, polyethylene terephthalate, amino carbon nanotube and dimethylformamide were mixed according to the mass ratio of 1:0.2:15, ultrasonic was carried out at 35 kHz for 30 min, then stirring was carried out at 500 r / min for 2 h, it was put into a 301℃ spinning box, spinning was carried out using a screw extruder under the condition of a spinning speed of 900 m / min, side-blowing air cooling and solidification were carried out under the condition of 15℃, humidity of 70% and wind speed of 1.1 m / s for 30 min, to prepare 10 tex self-made PET polyester yarn;

[0057] (4) Silver ammonia solution was prepared by adding 2% ammonia water to 2% silver nitrate solution dropwise at 50 drops / min until the precipitation dissolved; self-made PET polyester yarn and propylene-based fiber were co-twisted and woven according to the mass ratio of 1:8.5, 4 times the mass of self-made PET polyester yarn of silver ammonia solution was added, stirring was continued for 50 min, the temperature was raised to 70℃, 0.32 times the mass of self-made PET polyester yarn of ethylenediamine was added, stirring was continued for 5 h, the temperature was reduced to 2℃, 4 times the mass of self-made PET polyester yarn of sodium nitrite solution was added, stirring was continued for 2 h, the temperature was raised to 35℃, 0.4 times the mass of self-made PET polyester yarn of tetrabutylammonium bromide was added, stirring was continued for 7 h, electrochemical treatment was carried out at 70℃ and 3.5 MPa for 60 min using a current density of 300 A / m -2 , a voltage of 1.6 V, the prepared product was washed with anhydrous ethanol and deionized water for 3 times in sequence, and was put into a 60℃ oven for 50 min, to prepare a dustproof and antistatic acoustic mesh cloth.

[0058] Comparative Example 4

[0059] (1) 70℃ and argon protection conditions, 2-carboxyl-4-amino chlorobenzene and diethyl ether were mixed according to the mass ratio of 1:3, 2-carboxyl-4-amino chlorobenzene was added to the mass fraction of 20% sodium hydroxide solution with 1.3 times the mass, stirred at 500 r / min for 2h, then 2-carboxyl-4-amino chlorobenzene was added dropwise at 50 drops / min with 1.7 times the mass of concentrated sulfuric acid, 2-carboxyl-4-amino chlorobenzene was added with 2 times the mass of cyanoacetic acid, and the stirring was continued for 2h to prepare phenyl cyanoacetate; carbon nanotubes and concentrated sulfuric acid were mixed according to the mass ratio of 1:220, ultrasonic was performed at 35 kHz for 30 min, then 56 times the mass of concentrated nitric acid with a mass fraction of 68% was added, stirred at 1300 r / min for 10 min, heated to 60℃, and continued to stir for 2h, then 100 times the mass of deionized water was added for dilution, and the mixture was left to stand for 4h, then a microporous filter membrane with a pore size of 220 nm was used for vacuum filtration, deionized water was used for washing until the pH of the filtrate was 7, then anhydrous ethanol was used for washing for 3 times, and then it was put into a 50℃ oven and baked for 50 min, then it was added into 25 times the mass of ethyl ether of carbon nanotubes, ultrasonic was performed at 35 kHz for 30 min, 0.9 times the mass of phenyl cyanoacetate was added to the acidified carbon nanotubes, concentrated sulfuric acid was added dropwise at 50 drops / min with 0.7 times the mass of acidified carbon nanotubes, heated to 70℃, and continued to stir for 2h, then it was filtered, washed with anhydrous ethanol and deionized water for 3 times respectively, put into a 60℃ oven and baked for 50 min, and then amino-functionalized carbon nanotubes were prepared;

[0060] (2) Argon protection conditions, chloroethanediol and benzene-1, 4-tetracarbonitrile were mixed according to the mass ratio of 1:3, 0.07 times the mass of aluminum chloride was added to chloroethanediol, the temperature was lowered to-5℃, and the stirring was performed at 500 r / min for 7h, then 1 times the mass of concentrated sulfuric acid was added dropwise to chloroethanediol at 50 drops / min, the temperature was raised to 70℃, 0.8 times the mass of terephthalic acid was added dropwise to chloroethanediol, and the stirring was continued for 3h to prepare polyethylene terephthalate;

[0061] (3) 4℃ and argon protection conditions, polyethylene terephthalate, amino-functionalized carbon nanotubes, and dimethylformamide were mixed according to the mass ratio of 1:0.2:15, ultrasonic was performed at 35 kHz for 30 min, then the stirring was performed at 500 r / min for 2h, it was put into a 301℃ spinning box, and the spinning was performed using a screw extruder under the condition of a spinning speed of 900 m / min, then the side-blowing air cooling and solidification were performed under the condition of 15℃, humidity of 70% and air speed of 1.1 m / s for 30 min to prepare 10 tex self-made PET polyester yarn;

[0062] (4) under the condition of argon protection, polychloropropylene and 2-(2-nitrophenyl) propylene glycol are mixed uniformly according to the mass ratio of 1:1.4, 0.07 times of aluminum chloride of the mass of polychloropropylene is added, the temperature is reduced to-5℃, stirring is carried out at 500r / min for 7h, 0.1 times of nickel of the mass of polychloropropylene is added, the pressure is increased to 2MPa, 4 times of hydrogen of the mass of polychloropropylene is introduced at 1.5m 3 / h, and a propylene-based polymer is prepared; the propylene-based polymer is placed in a spinning box at 150℃, spinning is carried out using a screw extruder under the condition of a spinning speed of 900m / min, side-blowing air cooling and solidification are carried out under the condition of 15℃, humidity of 70% and wind speed of 1.1m / s for 30min, and a 10tex propylene-based fiber is prepared;

[0063] (5) self-made PET polyester yarn and propylene-based fiber are co-twisted according to the mass ratio of 1:8.5, woven, washed with anhydrous ethanol and deionized water for 3 times, respectively, placed in a 60℃ oven and baked for 50min, and a dustproof and antistatic acoustic mesh cloth is prepared.

[0064] Effect example

[0065] The following Table 1 shows the analysis results of the antistatic property, waterproof and dustproof property of the dustproof and antistatic acoustic mesh cloth prepared by using the self-made PET polyester yarn and propylene-based fiber of the application examples 1 to 3 and the comparative examples 1 to 4.

[0066] Table 1

[0067]

[0068] It can be found from Table 1 that the dustproof and antistatic acoustic mesh cloth prepared by using the self-made PET polyester yarn and propylene-based fiber of the application examples 1 to 3 has strong antistatic property, waterproof and dustproof property; it can be found from the comparison of the experimental data of the application examples 1 to 3 and the comparative example 1 that the use of the amino carbon nanotube to prepare the self-made PET polyester yarn can form a polyimide-carbon nanotube conductive path and a micro-nano structure, and the prepared dustproof and antistatic acoustic mesh cloth has strong antistatic property, waterproof and dustproof property; it can be found from the experimental data of the application examples 1 to 3 and the comparative example 2 that the use of the polyethylene terephthalate to prepare the self-made PET polyester yarn can form a polyimide-carbon nanotube conductive path, and the prepared dustproof and antistatic acoustic mesh cloth has strong antistatic property; it can be found from the experimental data of the application examples 1 to 3 and the comparative example 3 that the use of the propylene-based fiber to prepare the dustproof and antistatic acoustic mesh cloth can form a micro-nano structure, and the prepared dustproof and antistatic acoustic mesh cloth has strong waterproof and dustproof property; it can be found from the experimental data of the application examples 1 to 3 and the comparative example 4 that the use of the silver ammonia solution to prepare the dustproof and antistatic acoustic mesh cloth can form a micro-nano structure, and the prepared dustproof and antistatic acoustic mesh cloth has strong waterproof and dustproof property.

[0069] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference herein to any prior art is to be taken as an admission that the present application is not entitled to antedate such prior art by virtue of prior application. Any reference to the term "comprising" is to be construed in accordance with the definition of that term provided in the preamble to Article 69 of the European Patent Convention. Any reference to the term "comprising" is to be construed in accordance with the definition of that term provided in the preamble to Article 69 of the European Patent Convention.

Claims

1. A process for the production of a dust-proof, antistatic acoustic veil, characterized in that, It comprises the following preparation steps: (1) under the conditions of 2-6 DEG C and argon protection, polyethylene terephthalate, amino carbon nanotubes and dimethylformamide are mixed in a mass ratio of 1:0.1:10-1:0.3:20, ultrasonic treatment is carried out at 30-40 kHz for 20-40 min, stirring is carried out at 400-600 r / min for 1-3 h, the mixture is placed in a spinning box at 300-302 DEG C, spinning is carried out by using a screw extruder under the condition of a spinning speed of 800-1000 m / min, side blowing cooling and solidification are carried out under the condition of 10-20 DEG C, humidity of 60-80% and wind speed of 0.9-1.3 m / s for 25-35 min, and 8-12 tex self-made PET polyester yarn is prepared; The preparation method of the polyethylene terephthalate is as follows: under the condition of argon protection, chlorohydrin and benzene-1, 4-tetracarbonitrile are uniformly mixed in a mass ratio of 1:2.5-1:3.5, 0.06-0.08 times the mass of chlorohydrin of aluminum chloride is added, the temperature is reduced to-10-0 DEG C, stirring is carried out at 400-600 r / min for 6-8 h, 0.8-1.2 times the mass of chlorohydrin of concentrated sulfuric acid is added dropwise at 40-60 drops / min, the temperature is increased to 60-80 DEG C, 0.6-1 times the mass of chlorohydrin of terephthalic acid is continuously added dropwise, and stirring is continuously carried out for 2-4 h, and the polyethylene terephthalate is prepared; (2) the propylene-based polymer is placed in a spinning box at 140-160 DEG C, spinning is carried out by using a screw extruder under the condition of a spinning speed of 800-1000 m / min, side blowing cooling and solidification are carried out under the condition of 10-20 DEG C, humidity of 60-80% and wind speed of 0.9-1.3 m / s for 25-35 min, and 8-12 tex propylene-based fiber is prepared; (3) the self-made PET polyester yarn and the propylene-based fiber are co-twisted in a mass ratio of 1:8-1:9, silver ammine solution is added in an amount of 3-5 times the mass of the self-made PET polyester yarn, stirring is continuously carried out for 40-60 min, the temperature is increased to 60-80 DEG C, ethylenediamine is added in an amount of 0.3-0.34 times the mass of the self-made PET polyester yarn, stirring is continuously carried out for 4-6 h, the temperature is reduced to 0-4 DEG C, sodium nitrite solution is added in an amount of 3-5 times the mass of the self-made PET polyester yarn, stirring is continuously carried out for 1-3 h, the temperature is increased to 30-40 DEG C, tetrabutylammonium bromide is added in an amount of 0.3-0.5 times the mass of the self-made PET polyester yarn, stirring is continuously carried out for 6-8 h, electric treatment is carried out at 60-80 DEG C and 3-4 MPa for 50-70 min, the product is washed with anhydrous ethanol and deionized water for 2-4 times in sequence, the product is placed in an oven at 55-65 DEG C and baked for 40-60 min, and the dustproof and antistatic acoustic mesh cloth is prepared.

2. The method for preparing a dustproof and antistatic acoustic mesh fabric according to claim 1, characterized in that, The preparation method of the amino-functionalized carbon nanotubes in step (1) is as follows: 2-carboxyl-4-amino-chlorobenzene and diethyl ether are mixed at a mass ratio of 1:2-1:4 under the condition of 60-80℃ and argon protection, 1.2-1.4 times of the mass of 2-carboxyl-4-amino-chlorobenzene is added with 20% sodium hydroxide solution, and the mixture is stirred at 400-600 r / min for 1-3 h, then 1.6-1.8 times of the mass of 2-carboxyl-4-amino-chlorobenzene is added dropwise with concentrated sulfuric acid at a rate of 40-60 drops / min, 1-3 times of the mass of 2-carboxyl-4-amino-chlorobenzene is added with cyanoacetic acid, and the mixture is continuously stirred for 1-3 h to prepare phenyl cyanoacetate; carbon nanotubes and concentrated sulfuric acid are mixed at a mass ratio of 1:210-1:230, and the mixture is ultrasonically treated at 30-40 kHz for 20-40 min, then 55-57 times of the mass of the carbon nanotubes is added with 68% concentrated nitric acid, the mixture is stirred at 1200-1400 r / min for 9-11 min, the temperature is raised to 58-62℃, and the mixture is continuously stirred for 1.5-2.5 h, 98-102 times of the mass of the carbon nanotubes is added with deionized water for dilution, the mixture is left to stand for 3.5-4.5 h, then the mixture is vacuum filtered with a microporous filter membrane with a pore size of 220 nm, the mixture is washed with deionized water until the pH of the filtrate is 7, then the mixture is washed with anhydrous ethanol for 2-4 times, the mixture is placed in an oven at 55-65℃ for 40-60 min, then the mixture is added into 20-30 times of the mass of the carbon nanotubes with diethyl ether, the mixture is ultrasonically treated at 30-40 kHz for 20-40 min, 0.8-1 times of the mass of the acidified carbon nanotubes is added with phenyl cyanoacetate, 0.6-0.8 times of the mass of the acidified carbon nanotubes is added dropwise with concentrated sulfuric acid at a rate of 40-60 drops / min, the temperature is raised to 60-80℃, and the mixture is continuously stirred for 1-3 h, the mixture is filtered, and the mixture is washed with anhydrous ethanol and deionized water for 2-4 times, respectively, the mixture is placed in an oven at 55-65℃ for 40-60 min to obtain the amino-functionalized carbon nanotubes.

3. The method for preparing a dustproof and antistatic acoustic mesh fabric according to claim 1, characterized in that, The preparation method of the silver-ammonia solution in step (3) is as follows: 2% ammonia water is added dropwise into 2% silver nitrate solution at a rate of 40-60 drops / min until the precipitate is dissolved to prepare the silver-ammonia solution.

4. The method for preparing a dustproof and antistatic acoustic mesh fabric according to claim 1, characterized in that, The current density of the electric treatment in step (3) is 200-400 A*m -2 , and the potential is 1.5-1.7 V.

5. An acoustic veil, characterized by: The method is prepared according to any one of claims 1-4. The method is prepared according to any one of claims 1-4.

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