Anti-mite and bacteriostatic automobile headrest and preparation method thereof

Abstract

The invention discloses an anti-mite and bacteriostatic automobile headrest and a preparation method thereof, and relates to the technical field of textiles, in order to improve the anti-mite performance of the automobile headrest, modified carbon nanotubes are introduced into the surface fabric of the automobile headrest; the preparation method comprises the following steps: firstly, carrying out carboxylation modification treatment on carbon nanotubes, then introducing amino groups into 4 '-diaminodiphenyl sulfone serving as a raw material, reacting the 4'-diaminodiphenyl sulfone with 5-(2-cyanoethyl) hydantoin containing a hydantoin structure and a cyano structure, and introducing guanidino groups on the surfaces of the carbon nanotubes by utilizing the reaction between cyano groups and amino groups, so as to prepare the carbon nanotubes with the guanidino groups and the 5-(2-cyanoethyl) hydantoin. On this basis, the hydantoin structure is further chlorinated, so that a halamine structure is generated, the existence of the guanidyl group and the halamine structure can effectively inhibit the vital movement of microbial cells, and lipid components in mite cell membranes of the guanidyl group and the halamine structure act to change the mobility and integrity of the membrane, so that the normal function of the cells is interfered, and the anti-mite effect is achieved. Therefore, germs and mites are inhibited from breeding on the surface of the fabric.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to an anti-mite and antibacterial automobile headrest and a preparation method thereof. Background Art

[0002] Mites are tiny pests that are invisible to the naked eye. There are more than 50,000 known species of mites, which are widely found in all kinds of human living environments. Mites mainly feed on human dandruff and use fungi to help digest. Due to these characteristics, mites often cause allergic reactions, skin problems, and even long-term discomfort in humans. The interior of a car is a relatively closed environment, and the car headrests are usually made of soft cloth or foam materials. The large number of tiny holes contained in them become places for mites to breed. Due to structural problems, it is difficult for car owners to thoroughly clean and disinfect soft parts such as headrests in the car, which provides a "breeding ground" for the breeding of mites, making it easy for mites to breed and pose a threat to human health. Summary of the invention

[0003] The object of the present invention is to provide an anti-mite and antibacterial automobile headrest and a preparation method thereof, so as to solve the problems raised in the prior art.

[0004] To achieve the above object, the present invention provides the following technical solution: a method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: S1. Preparation of anti-mite and antibacterial PET fiber; S11. The carbon nanotubes are dispersed in concentrated sulfuric acid, heated to 80-85°C, ultrasonically dispersed and mixed for 1-5 hours, potassium persulfate is added thereto, the reaction is continued for 1 hour, the reaction is cooled to 4-8°C, sodium nitrate and potassium permanganate are added thereto, the reaction is continued for 2-3 hours, the precipitation is separated by centrifugation, the precipitation is washed 4-5 times with deionized water, hydrogen peroxide and hydrochloric acid respectively, the precipitation is dispersed again in deionized water, sodium hydroxide and monochloroacetic acid are added, the temperature is raised to 85-95°C, the reaction is stirred for 2-4 hours, the precipitation is separated by centrifugation, and it is dried to constant weight to obtain carboxylated carbon nanotubes; S12. The carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed for 1.5-3h to obtain a dispersion of carboxylated carbon nanotubes; Disperse 4,4'-diaminodiphenyl sulfone in pure chloroform, mix well, continue to add N,N'-dicyclohexylcarbodiimide, stir for 1-5 minutes, then drop carboxylated carbon nanotube dispersion for 1.5-5 hours. After the dropwise addition, heat to 61°C, reflux and stir for 12-24 hours, then add 2 times the volume of chloroform in the reaction system, centrifuge to separate the precipitate, and dry to constant weight to obtain amino-modified carbon nanotubes; S13. 5-(2-cyanoethyl)hydantoin was dispersed in deionized water, stirred for 30-45 minutes under a nitrogen atmosphere, and then sodium hydroxide was added thereto. After mixing for 1-2 hours, the mixture was heated to 80-95° C., and amino-modified carbon nanotubes were added thereto. After stirring for 8-24 hours, the precipitate was separated by centrifugation, and the precipitate was dispersed in 1,3-dichloropropanol. After stirring for 6-12 hours at 25-30° C., the precipitate was separated by centrifugation and dried to constant weight to obtain anti-mite and antibacterial carbon nanotubes. S14. Dispersing the anti-mite and antibacterial carbon nanotubes in ethylene glycol by weight, ultrasonically dispersing for 30-90 minutes, adding terephthalic acid and potassium fluorotitanate, heating to 245-255°C for reaction for 4-5 hours, heating again to 255-275°C, vacuuming to 50-80Pa, continuing the reaction for 3-5 hours, extruding and pelletizing, and melt spinning to obtain anti-mite and antibacterial PET fibers; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0005] Furthermore, in step S11, the mass ratio of the carbon nanotubes, concentrated sulfuric acid and potassium persulfate is 5:(80-500):(1-20).

[0006] Furthermore, in step S11, the mass ratio of the carbon nanotubes, sodium nitrate and potassium permanganate is 5:(15-20):(12-16).

[0007] Furthermore, in step S11, the mass ratio of the carbon nanotubes, sodium hydroxide and monochloroacetic acid is 5:(20-50):(15-40).

[0008] Furthermore, in step S12, the mass ratio of the carboxylated carbon nanotubes, 4,4'-diaminodiphenyl sulfone, and N,N'-dicyclohexylcarbodiimide is 5:(20-80):(0.01-0.05).

[0009] Furthermore, in step S13, the mass ratio of the 5-(2-cyanoethyl)hydantoin, sodium hydroxide, and amino-modified carbon nanotubes is (5-50):(2-18):5.

[0010] Furthermore, in step S14, the anti-mite and antibacterial PET fiber is prepared by reacting 2.5-8 parts of anti-mite carbon nanotubes, 22-25 parts of ethylene glycol, 45-53 parts of terephthalic acid, and 0.001-0.0015 parts of potassium fluorotitanate, in parts by weight.

[0011] Furthermore, in step S14, the anti-mite and antibacterial PET fiber has a fineness of 80-180D.

[0012] An anti-mite and antibacterial automobile headrest is prepared by the method.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In order to improve the anti-mite performance of the automobile headrest, the present invention modifies the surface fabric of the automobile headrest; firstly, the present invention uses carbon nanotubes as raw materials. The carbon nanotubes have a very high specific surface area and aspect ratio. After adding the carbon nanotubes as reinforcing materials to polyester fibers, the mechanical properties of the polyester fibers can be effectively improved. Moreover, due to the extremely high thermal conductivity of the carbon nanotubes, the thermal conduction of the polyester fibers can be effectively improved, thereby avoiding heat accumulation and discomfort caused by long-term use of the headrest; and due to its tubular structure, the air permeability of the polyester fibers can be effectively improved, thereby further improving the air permeability and comfort. On this basis, the present invention first performs a carboxyl modification treatment on the carbon nanotubes, and then uses 4'-diaminodiphenyl sulfone as a raw material to introduce amino groups therein, and reacts it with 5-(2-cyanoethyl) hydantoin containing a hydantoin structure and a cyano structure, and utilizes the reaction between the cyano group and the amino group to introduce a guanidine group on the surface of the carbon nanotubes, and on this basis, further chlorinates the hydantoin structure to generate a halamine structure. The presence of the guanidine group and the halamine structure can effectively inhibit the life activities of microbial cells, and the two interact with the lipid components in the mite cell membrane to change the fluidity and integrity of the membrane, thereby interfering with the normal function of the cell, thereby inhibiting the reproduction of pathogens and mites on the surface of the fabric. DETAILED DESCRIPTION

[0014] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0015] The carbon nanotubes used in this application are commercially available CNT107 type multi-walled carbon nanotubes with a tube diameter of >50nm and a length of 10-20μm; Example 1. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12 5 parts of carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed and mixed for 3h to obtain a carboxylated carbon nanotube dispersion; Disperse 20 parts of 4,4'-diaminodiphenyl sulfone in pure chloroform, mix well, then add 0.02 parts of N,N'-dicyclohexylcarbodiimide, stir for 3 minutes, then drop the carboxylated carbon nanotube dispersion for 3 hours. After the dropwise addition, heat to 61°C, reflux and stir for 18 hours, then add 2 times the volume of chloroform in the reaction system, centrifuge and separate the precipitate, and dry to constant weight to obtain amino-modified carbon nanotubes. S13. Disperse 5 parts of 5-(2-cyanoethyl)hydantoin into deionized water, stir for 30 minutes under nitrogen atmosphere, add 2 parts of sodium hydroxide, continue mixing for 2 hours, heat the mixture to 88°C, add 5 parts of amino-modified carbon nanotubes, stir for 24 hours, centrifuge to separate the precipitate, and disperse the precipitate into 1,3-dichloropropanol, stir for 8 hours at 30°C, centrifuge to separate the precipitate, and dry to constant weight to obtain anti-mite and antibacterial carbon nanotubes; S14. According to the weight percentage, 2.5 parts of anti-mite and antibacterial carbon nanotubes were dispersed in 22 parts of ethylene glycol, and after ultrasonic dispersion for 30 minutes, 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate were added, and the temperature was raised to 245°C for reaction for 4 hours, and then the temperature was raised to 275°C again, and the vacuum value was 50-80Pa. After the reaction was continued for 4 hours, the fiber was extruded and pelletized, and melt-spun to obtain an anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0016] Example 2. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: Compared with Example 1, this embodiment increases the amount of anti-mite and antibacterial carbon nanotubes added in step S14; S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12 5 parts of carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed and mixed for 3h to obtain a carboxylated carbon nanotube dispersion; Disperse 20 parts of 4,4'-diaminodiphenyl sulfone in pure chloroform, mix well, then add 0.02 parts of N,N'-dicyclohexylcarbodiimide, stir for 3 minutes, then drop the carboxylated carbon nanotube dispersion for 3 hours. After the dropwise addition, heat to 61°C, reflux and stir for 18 hours, then add 2 times the volume of chloroform in the reaction system, centrifuge and separate the precipitate, and dry to constant weight to obtain amino-modified carbon nanotubes. S13. Disperse 5 parts of 5-(2-cyanoethyl)hydantoin into deionized water, stir for 30 minutes under nitrogen atmosphere, add 2 parts of sodium hydroxide, continue mixing for 2 hours, heat the mixture to 88°C, add 5 parts of amino-modified carbon nanotubes, stir for 24 hours, centrifuge to separate the precipitate, and disperse the precipitate into 1,3-dichloropropanol, stir for 8 hours at 30°C, centrifuge to separate the precipitate, and dry to constant weight to obtain anti-mite and antibacterial carbon nanotubes; S14. Disperse 5 parts of anti-mite and antibacterial carbon nanotubes in 22 parts of ethylene glycol by weight, ultrasonically disperse for 30 minutes, add 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate, heat to 245°C for reaction for 4 hours, heat to 275°C again, vacuum to 50-80Pa, continue to react for 4 hours, extrusion pelletize, melt spin to obtain anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0017] Example 3. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: Compared with Example 2, this example increases the amount of 4,4'-diaminodiphenyl sulfone added in step S12; S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12 5 parts of carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed and mixed for 3h to obtain a carboxylated carbon nanotube dispersion; 80 parts of 4,4'-diaminodiphenyl sulfone were dispersed in pure chloroform, and after being evenly mixed, 0.02 parts of N,N'-dicyclohexylcarbodiimide was added thereto, and after stirring for 3 minutes, the carboxylated carbon nanotube dispersion was added thereto dropwise for 3 hours. After the addition was completed, the temperature was raised to 61°C, and after reflux stirring and reaction for 18 hours, chloroform with a volume twice that of the reaction system was added again, and the precipitate was separated by centrifugation and dried to constant weight to obtain amino-modified carbon nanotubes; S13. Disperse 5 parts of 5-(2-cyanoethyl)hydantoin into deionized water, stir for 30 minutes under nitrogen atmosphere, add 2 parts of sodium hydroxide, continue mixing for 2 hours, heat the mixture to 88°C, add 5 parts of amino-modified carbon nanotubes, stir for 24 hours, centrifuge to separate the precipitate, and disperse the precipitate into 1,3-dichloropropanol, stir for 8 hours at 30°C, centrifuge to separate the precipitate, and dry to constant weight to obtain anti-mite and antibacterial carbon nanotubes; S14. Disperse 5 parts of anti-mite and antibacterial carbon nanotubes in 22 parts of ethylene glycol by weight, ultrasonically disperse for 30 minutes, add 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate, heat to 245°C for reaction for 4 hours, heat to 275°C again, vacuum to 50-80Pa, continue to react for 4 hours, extrusion pelletize, melt spin to obtain anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0018] Example 4. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: Compared with Example 3, this example increases the amount of 5-(2-cyanoethyl)hydantoin added in step S13; S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12 5 parts of carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed and mixed for 3h to obtain a carboxylated carbon nanotube dispersion; 80 parts of 4,4'-diaminodiphenyl sulfone were dispersed in pure chloroform, and after being evenly mixed, 0.02 parts of N,N'-dicyclohexylcarbodiimide was added thereto, and after stirring for 3 minutes, the carboxylated carbon nanotube dispersion was added thereto dropwise for 3 hours. After the addition was completed, the temperature was raised to 61°C, and after reflux stirring and reaction for 18 hours, chloroform with a volume twice that of the reaction system was added again, and the precipitate was separated by centrifugation and dried to constant weight to obtain amino-modified carbon nanotubes; S13. Disperse 50 parts of 5-(2-cyanoethyl)hydantoin in deionized water, stir for 30 minutes under nitrogen atmosphere, add 18 parts of sodium hydroxide, continue mixing for 2 hours, heat the mixture to 88°C, add 5 parts of amino-modified carbon nanotubes, stir for 24 hours, centrifuge to separate the precipitate, and disperse the precipitate in 1,3-dichloropropanol, stir for 8 hours at 30°C, centrifuge to separate the precipitate, and dry to constant weight to obtain anti-mite and antibacterial carbon nanotubes; S14. Disperse 5 parts of anti-mite and antibacterial carbon nanotubes in 22 parts of ethylene glycol by weight, ultrasonically disperse for 30 minutes, add 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate, heat to 245°C for reaction for 4 hours, heat to 275°C again, vacuum to 50-80Pa, continue to react for 4 hours, extrusion pelletize, melt spin to obtain anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0019] Comparative Example 1. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: Compared with Example 1, this comparative example only prepared carboxylated carbon nanotubes; S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12. By weight, 2.5 parts of carboxylated carbon nanotubes were dispersed in 22 parts of ethylene glycol, and after ultrasonic dispersion for 30 minutes, 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate were added, and the temperature was raised to 245°C for reaction for 4 hours, and then the temperature was raised to 275°C again, and the vacuum value was 50-80Pa. After the reaction was continued for 4 hours, the fiber was extruded and pelletized, and melt-spun to obtain an anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0020] Comparative Example 2. A method for preparing an anti-mite and antibacterial automobile headrest, comprising the following steps: Compared with Example 1, this comparative example did not use 1,3-dichloropropanol to treat the carbon nanotubes; S1. Preparation of anti-mite and antibacterial PET fiber; S11. Disperse 5 parts of carbon nanotubes in 200 parts of concentrated sulfuric acid by weight, heat to 80°C, mix by ultrasonic dispersion for 3 hours, add 12 parts of potassium persulfate, continue to react for 1 hour, cool to 4°C, add 15 parts of sodium nitrate and 12 parts of potassium permanganate, continue to react for 3 hours, centrifuge and separate the precipitate, wash the precipitate with deionized water, hydrogen peroxide and hydrochloric acid for 4 times, disperse the precipitate again in deionized water, add 20 parts of sodium hydroxide and 15 parts of monochloroacetic acid, heat to 85°C, stir and react for 4 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain carboxylated carbon nanotubes; S12 5 parts of carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed and mixed for 3h to obtain a carboxylated carbon nanotube dispersion; Disperse 20 parts of 4,4'-diaminodiphenyl sulfone in pure chloroform, mix well, then add 0.02 parts of N,N'-dicyclohexylcarbodiimide, stir for 3 minutes, then drop the carboxylated carbon nanotube dispersion for 3 hours. After the dropwise addition, heat to 61°C, reflux and stir for 18 hours, then add 2 times the volume of chloroform in the reaction system, centrifuge and separate the precipitate, and dry to constant weight to obtain amino-modified carbon nanotubes. S13. Disperse 5 parts of 5-(2-cyanoethyl)hydantoin into deionized water, stir for 30 minutes under nitrogen atmosphere, add 2 parts of sodium hydroxide, continue to mix for 2 hours, heat the mixture to 88°C, add 5 parts of amino-modified carbon nanotubes, stir for 24 hours, centrifuge and separate the precipitate, dry to constant weight, and obtain anti-mite and antibacterial carbon nanotubes; S14. According to the weight percentage, 2.5 parts of anti-mite and antibacterial carbon nanotubes were dispersed in 22 parts of ethylene glycol, and after ultrasonic dispersion for 30 minutes, 45 parts of terephthalic acid and 0.0015 parts of potassium fluorotitanate were added, and the temperature was raised to 245°C for reaction for 4 hours, and then the temperature was raised to 275°C again, and the vacuum value was 50-80Pa. After the reaction was continued for 4 hours, the fiber was extruded and pelletized, and melt-spun to obtain an anti-mite and antibacterial PET fiber with a fineness of 150D; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

[0021] Test: The anti-mite and antibacterial PET fabrics prepared in Examples 1-4 and Comparative Examples 1-2 were prepared with a gram weight of 135 g / m 2 32S plain weave pattern; The test samples prepared in Examples 1-4 and Comparative Examples 1-2 were tested for water drop diffusion time according to GB / T 21665.1-2008; the test samples prepared in Examples 1-4 and Comparative Examples 1-2 were tested for mite avoidance rate according to GB / T 24253-2009 “Evaluation of Anti-mite Performance of Textiles”; the test samples prepared in Examples 1-4 and Comparative Examples 1-2 were tested for antibacterial properties according to GB / T 20944.3-2008; The test results are shown in the table below;

[0022] 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. A method for preparing an anti-mite and antibacterial automobile headrest, characterized in that: The following steps are involved: S1. Preparation of anti-mite and antibacterial PET fiber; S11. The carbon nanotubes are dispersed in concentrated sulfuric acid, heated to 80-85°C, ultrasonically dispersed and mixed for 1-5 hours, potassium persulfate is added thereto, the reaction is continued for 1 hour, the reaction is cooled to 4-8°C, sodium nitrate and potassium permanganate are added thereto, the reaction is continued for 2-3 hours, the precipitation is separated by centrifugation, the precipitation is washed 4-5 times with deionized water, hydrogen peroxide and hydrochloric acid respectively, the precipitation is dispersed again in deionized water, sodium hydroxide and monochloroacetic acid are added, the temperature is raised to 85-95°C, the reaction is stirred for 2-4 hours, the precipitation is separated by centrifugation, and it is dried to constant weight to obtain carboxylated carbon nanotubes; S12. The carboxylated carbon nanotubes were dispersed in chloroform and ultrasonically dispersed for 1.5-3h to obtain a dispersion of carboxylated carbon nanotubes; Disperse 4,4'-diaminodiphenyl sulfone in pure chloroform, mix well, continue to add N,N'-dicyclohexylcarbodiimide, stir for 1-5 minutes, then drop carboxylated carbon nanotube dispersion for 1.5-5 hours. After the dropwise addition, heat to 61°C, reflux and stir for 12-24 hours, then add 2 times the volume of chloroform in the reaction system, centrifuge to separate the precipitate, and dry to constant weight to obtain amino-modified carbon nanotubes; S13. 5-(2-cyanoethyl)hydantoin was dispersed in deionized water, stirred for 30-45 minutes under a nitrogen atmosphere, and then sodium hydroxide was added thereto. After mixing for 1-2 hours, the mixture was heated to 80-95° C., and amino-modified carbon nanotubes were added thereto. After stirring for 8-24 hours, the precipitate was separated by centrifugation, and the precipitate was dispersed in 1,3-dichloropropanol. After stirring for 6-12 hours at 25-30° C., the precipitate was separated by centrifugation and dried to constant weight to obtain anti-mite and antibacterial carbon nanotubes. S14. Dispersing the anti-mite and antibacterial carbon nanotubes in ethylene glycol by weight, ultrasonically dispersing for 30-90 minutes, adding terephthalic acid and potassium fluorotitanate, heating to 245-255°C for reaction for 4-5 hours, heating again to 255-275°C, vacuuming to 50-80Pa, continuing the reaction for 3-5 hours, extruding and pelletizing, and melt spinning to obtain anti-mite and antibacterial PET fibers; S2. The anti-mite and antibacterial PET fiber spinning and weaving to obtain anti-mite and antibacterial PET fabric; S3. The anti-mite and anti-bacterial PET fabric is cut and spliced ​​to prepare a headrest cover, and a polyurethane sponge is filled therein to obtain an anti-mite and anti-bacterial automobile headrest.

2. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S11, the mass ratio of the carbon nanotubes, concentrated sulfuric acid and potassium persulfate is 5:(80-500):(1-20).

3. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S11, the mass ratio of the carbon nanotubes, sodium nitrate and potassium permanganate is 5:(15-20):(12-16).

4. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S11, the mass ratio of the carbon nanotubes, sodium hydroxide and monochloroacetic acid is 5:(20-50):(15-40).

5. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S12, the mass ratio of the carboxylated carbon nanotubes, 4,4'-diaminodiphenyl sulfone, and N,N'-dicyclohexylcarbodiimide is 5:(20-80):(0.01-0.05).

6. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S13, the mass ratio of the 5-(2-cyanoethyl)hydantoin, sodium hydroxide and amino-modified carbon nanotubes is (5-50):(2-18):

5.

7. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S14, the anti-mite and antibacterial PET fiber is prepared by reacting 2.5-8 parts of anti-mite and antibacterial carbon nanotubes, 22-25 parts of ethylene glycol, 45-53 parts of terephthalic acid, and 0.001-0.0015 parts of potassium fluorotitanate, in parts by weight.

8. The method for preparing an anti-mite and antibacterial automobile headrest according to claim 1, characterized in that: In step S14, the anti-mite and antibacterial PET fiber has a fineness of 80-180D.

9. An anti-mite and antibacterial automobile headrest prepared by the preparation method according to any one of claims 1 to 8.

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