Novel carbon nano anion wool top and preparation method thereof

Abstract

The invention relates to a novel carbon nano negative ion wool top and a preparation method thereof, and relates to the field of textile processing, the novel carbon nano negative ion wool top comprises base material fibers, carbon nano fibers and negative ion fibers, and the negative ion fibers comprise modified tourmaline, polystyrene and vinyl acetate. The wool top prepared by the invention has the effects of releasing negative ions and purifying air.

Description

Technical Field

[0001] The present application relates to the field of textile processing, and in particular to a novel carbon nano-negative ion wool top and a preparation method thereof. Background Art

[0002] Wool tops are continuous long fiber bundles made by combing, removing impurities, mixing, and drawing loose fibers (such as wool, chemical fibers, natural fibers, etc.). Their cross-section consists of dozens to hundreds of fibers with uniform thickness and a certain degree of curl to facilitate subsequent spinning.

[0003] As people's demand for a healthy living environment increases, functional materials with functions such as purifying the air and releasing negative ions have received widespread attention. How to apply negative ion technology to textiles has positive significance in textile processing, improving the environment and human health. Wool tops are important semi-finished products before spinning wool and blended fibers. They are the key basic materials that determine the final performance of the fabric. Applying negative ion technology to wool tops can enable various fabrics made in subsequent processing, such as clothing fabrics, home textiles, etc., to have long-lasting negative ion release functions, thereby greatly enhancing product added value and market competitiveness. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a novel nano negative ion wool strip and a preparation method thereof.

[0005] In the first aspect, the present application provides a novel nano negative ion hair strip, which adopts the following technical solution: A novel nanometer negative ion wool top comprises base fiber, carbon nanometer fiber and negative ion fiber. The raw materials of the negative ion fiber include modified tourmaline, polystyrene and vinyl acetate.

[0006] By adopting the above technical solution, negative ion tops are prepared by blending base fiber, carbon nanofiber and negative ion fiber. The negative ion fiber is prepared by modified tourmaline, polystyrene and vinyl acetate. Tourmaline is a silicate product that has the ability to release negative ions, which improves the environment and promotes health, thereby purifying the air.

[0007] Preferably, the modified tourmaline is prepared by the following method: Water and ethanol are mixed, and sodium hydroxide solution and dilute hydrochloric acid are added to obtain an ethanol solution; tourmaline powder is added to the ethanol solution, and ultrasonic treatment is performed to obtain a tourmaline dispersion; vinyltrimethoxysilane is mixed with water to obtain a vinyltrimethoxysilane solution, the tourmaline dispersion is stirred in a water bath, and then the vinyltrimethoxysilane solution is added, the reaction is stirred, the mixture is washed, filtered, and dried to obtain a modified tourmaline.

[0008] By adopting the above technical solution, the surface polarity of tourmaline is relatively strong and it is difficult to be evenly dispersed in the system. After the tourmaline is modified by vinyltrimethoxysilane, the dispersion performance of the tourmaline in the system can be further improved. Vinyltrimethoxysilane is hydrolyzed to generate silanol, which can react with the hydroxyl groups on the surface of the tourmaline. The modified tourmaline has reduced surface energy, thereby improving the agglomeration phenomenon and being more evenly dispersed in the system.

[0009] Preferably, the mass ratio of the tourmaline powder, vinyltrimethoxysilane and ethanol is 5:1:(2-2.4).

[0010] By adopting the above technical solution, the mass ratio of tourmaline powder, vinyltrimethoxysilane and ethanol is preferably within the above range, which can further improve the overall stability of the prepared modified tourmaline powder.

[0011] Preferably, the pH value of the ethanol solution is 8.5-9.5.

[0012] By adopting the above technical solution, the pH value of the tourmaline dispersion during the reaction is preferably within the above range, which can further enhance the hydrolysis performance of vinyltrimethoxysilane and improve the modification effect of the tourmaline powder.

[0013] Preferably, the carbon nanofibers include carboxyl carbon nanotubes, modified graphene and polyhexamethylene adipamide.

[0014] By adopting the above technical solution, carbon nanofibers are also added to the wool strips. The carbon nanotube fibers are prepared by carboxyl carbon nanotubes, modified graphene and poly(hexamethylene adipamide). Carbon nanotubes have a unique hexagonal network structure and have good mechanical properties and thermal stability. Graphene is a carbon allotrope and also has a good mechanical structure. After the graphene and carbon nanotubes are compounded, they can synergistically improve the overall mechanical properties of the system. After being combined with poly(hexamethylene adipamide), carbon nanofibers are prepared, which can effectively improve the overall binding performance of the system, thereby synergistically improving the mechanical strength of the carbon nanofibers.

[0015] Preferably, the modified graphite raw material includes graphene oxide and melamine.

[0016] By adopting the above technical solution, melamine has a rigid structure, and after modifying graphene oxide, the graphene oxide is amino-modified, thereby improving the dispersibility and describing properties of graphene oxide, so that the modified graphene oxide can be more stably combined with carboxyl carbon nanotubes and poly(hexamethylene adipamide).

[0017] Preferably, the modified graphene is prepared by the following method: Graphene oxide, water and ethanol are mixed and ultrasonically treated, and the mixture is freeze-dried to obtain pretreated graphene oxide; the pretreated graphene oxide and dimethyl sulfoxide are mixed and ultrasonically treated to obtain a graphene oxide dispersion, melamine is added to the graphene oxide dispersion and ultrasonically treated, and then 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate is added, the mixture is heated and stirred, and then washed and dried to obtain modified graphene oxide.

[0018] By adopting the above technical solution, melamine is grafted onto the surface of graphene oxide through covalent modification after ultrasonic treatment, so that the graphene oxide is amino-treated, thereby improving the dispersion performance of graphene oxide and further improving the stability of the prepared carbon nanofibers.

[0019] Preferably, the carbon nanofiber is prepared by the following method: The modified graphene oxide, carboxyl carbon nanotubes and hexamethylenediamine adipate are mixed to obtain a mixture, the mixture is heated and stirred, washed and then dried to obtain a composite nanomaterial, and the carbon nanofiber is obtained after melt spinning.

[0020] By adopting the above technical solution, covalent bonds are formed between the modified graphene oxide and the functional groups in the carboxyl carbon nanotubes and hexamethylenediamine adipate, which can further improve the overall performance of the prepared carbon nanofibers, thereby improving the mechanical strength of the carbon nanofibers.

[0021] Preferably, the mass ratio of the modified graphene, carboxyl carbon nanotubes and poly(hexamethylene adipamide) is (0.5-0.9):1:20.

[0022] By adopting the above technical solution, the mass ratio of the modified graphene, carboxyl carbon nanotubes and poly(hexamethylene adipamide) is preferably within the above range, which can further improve the overall stability of the prepared carbon nanofibers.

[0023] In a second aspect, the present application provides a method for preparing a novel carbon nano-negative ion wool top, which adopts the following technical solution: A method for preparing a novel carbon nano-negative ion wool top comprises the following steps: The carbon nanotube fiber, negative ion fiber and base material fiber are blended in a mass ratio to obtain a blended fiber, which is then passed through a carding machine to remove short fibers and defects to obtain a prefabricated top. Finally, the prefabricated top is shaped through a hot air channel to obtain a new type of carbon nano negative ion top.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Negative ion tops are made by blending base fiber, carbon nanofiber and negative ion fiber. Negative ion fiber is made by modifying tourmaline, polystyrene and vinyl acetate. Tourmaline is a silicate product that releases negative ions, improves the environment, promotes health, and thus purifies the air. 2. By modifying tourmaline, the tourmaline is dispersed more evenly in the tourmaline fiber. Vinyltrimethoxysilane is hydrolyzed to generate silanol, which can react with the hydroxyl groups on the tourmaline surface. The modified tourmaline reduces the surface energy, thereby improving the agglomeration phenomenon and dispersing more evenly in the system. 3. Carbon nanotube fibers are prepared from carboxyl carbon nanotubes, modified graphene, and poly(hexamethylene adipamide). Carbon nanotubes have a unique hexagonal network structure and exhibit excellent mechanical properties and thermal stability. Graphene, a carbon allotrope, also has a good mechanical structure. Graphene is compounded with carbon nanotubes and then combined with poly(hexamethylene adipamide) to prepare carbon nanofibers, which can effectively enhance the overall bonding performance of the system, thereby synergistically enhancing the mechanical strength of the carbon nanofibers. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the embodiments: Raw material description: All raw materials in the examples can be obtained commercially; in this application, the base fiber is polyester fiber.

[0026] Example 1 Preparation of modified tourmaline: 200 g of deionized water and 10 g of anhydrous ethanol were mixed, and a 5% by mass sodium hydroxide solution and dilute hydrochloric acid were added to obtain an ethanol solution, wherein the pH value of the ethanol solution was 8.5; 25 g of tourmaline powder (CAS No.: 1317-93-7) was added to the ethanol solution, and ultrasonicated for 10 minutes to obtain a tourmaline dispersion; 5 g of vinyltrimethoxysilane (CAS No.: 2768-02-7) was mixed with deionized water to obtain a vinyltrimethoxysilane solution, and the tourmaline dispersion was stirred in a water bath at 60° C. for 10 minutes, and then the vinyltrimethoxysilane solution was added, stirred for reaction for 2 hours, washed with ethanol, filtered, and dried, and dried in an oven at 60° C. for 10 hours to obtain modified tourmaline.

[0027] Preparation of negative ion fiber: 10 g of modified tourmaline was mixed with 400 g of vinyl acetate (CAS No.: 108-05-4), and 1 g of azobisisobutyronitrile (CAS No.: 78-67-1) and 10 g of N,N-dimethylformamide (CAS No.: 68-12-2) were added in an oil bath at 75°C. After stirring, the temperature was raised to 90°C, and 1 g of dibenzoyl oxide (CAS No.: 94-36-0) and 80 g of styrene (CAS No.: 100-42-5) were added. After stirring for 1 hour, the temperature was raised to 100°C and stirred for 8 hours to obtain a polymer solution. Water was used as a coagulation bath and wet-spun to prepare negative ion fibers.

[0028] Preparation of modified graphene oxide: Graphene oxide, deionized water and ethanol were mixed, ultrasonicated and freeze-dried to obtain pretreated graphene oxide; 10 g of the pretreated graphene oxide was mixed with 800 g of dimethyl sulfoxide (CAS No.: 67-68-5), ultrasonicated for 1 hour to obtain a graphene oxide dispersion, 20 g of melamine (CAS No.: 108-78-1) was added to the graphene oxide dispersion, and ultrasonication was continued for 1 hour, and then 5 g of 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate (CAS No.: 148893-10-1) was added, the temperature was raised to 60° C., stirred for 6 hours, and then washed alternately with dimethyl sulfoxide, ethanol and deionized water, and vacuum dried at 80° C. for 8 hours to obtain modified graphene oxide.

[0029] Preparation of carbon nanofibers: 4.65 g of modified graphene oxide, 9.3 g of carboxyl carbon nanotubes (CAS number: 308068-56-6) and 186.05 g of hexamethylenediamine adipate (CAS number: 32131-17-2) were mixed and ground to obtain a mixture. The mixture was heated to 190° C. and stirred for 90 min under a nitrogen atmosphere, then heated to 220° C. and maintained for 2 h, and finally heated to 280° C. and maintained for 4 h. After pulverization, the mixture was washed with boiling water and dried to obtain a composite nanomaterial, which was melt-spun to obtain carbon nanofibers.

[0030] Preparation of new carbon nano negative ion strips: Carbon nanotube fibers, negative ion fibers and substrate fibers are blended in a mass ratio of 1:1:2 to obtain blended fibers. The fibers are spun on a carding machine at a speed of 300 r / min, a gauge of 5 μm, and a doffer speed of 18 r / min to remove short fibers (≤15 mm) and defects. The front zone drafting ratio is 5 times, the rear zone drafting ratio is 1.2 times, and the workshop humidity is 65% to obtain prefabricated wool tops. Finally, the fibers are passed through a 130°C hot air channel at a speed of 10 m / min to obtain new carbon nano negative ion wool tops after shaping.

[0031] Example 2 Preparation of modified tourmaline: 200 g of deionized water was mixed with 11.43 g of anhydrous ethanol, and a 5% by mass sodium hydroxide solution and dilute hydrochloric acid were added to obtain an ethanol solution having a pH value of 9.5; 23.81 g of tourmaline powder was added to the ethanol solution and ultrasonicated for 10 minutes to obtain a tourmaline dispersion; 4.76 g of vinyltrimethoxysilane was mixed with deionized water to obtain a vinyltrimethoxysilane solution, the tourmaline dispersion was stirred in a water bath at 60° C. for 10 minutes, and then the vinyltrimethoxysilane solution was added, stirred for reaction for 2 hours, washed with ethanol, filtered and dried, and dried in an oven at 60° C. for 10 hours to obtain modified tourmaline.

[0032] Preparation of negative ion fiber: 10 g of modified tourmaline was mixed with 400 g of vinyl acetate. In an oil bath at 75°C, 1 g of azobisisobutyronitrile and 10 g of N,N-dimethylformamide were added. After stirring, the temperature was raised to 90°C. 1 g of dibenzoyl oxide and 80 g of styrene were added. After stirring for 1 hour, the temperature was raised to 100°C and stirred for 8 hours to obtain a polymer solution. Water was used as a coagulation bath and negative ion fibers were prepared by wet spinning.

[0033] Preparation of modified graphene oxide: Graphene oxide, deionized water and ethanol were mixed, ultrasonicated and freeze-dried to obtain pretreated graphene oxide; 10 g of the pretreated graphene oxide was mixed with 800 g of dimethyl sulfoxide and ultrasonicated for 1 hour to obtain a graphene oxide dispersion, 20 g of melamine was added to the graphene oxide dispersion, and ultrasonic treatment was continued for 1 hour, followed by the addition of 5 g of 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, the temperature was raised to 60°C, stirred for 6 hours, and then washed alternately with dimethyl sulfoxide, ethanol and deionized water, and vacuum dried at 80°C for 8 hours to obtain modified graphene oxide.

[0034] Preparation of carbon nanofibers: 8.22 g of modified graphene oxide, 9.13 g of carboxyl carbon nanotubes and 182.62 g of hexamethylenediamine adipate were mixed and ground to obtain a mixture. The mixture was heated to 190° C. and stirred for 90 min under a nitrogen atmosphere, then heated to 220° C. and maintained for 2 h, and finally heated to 280° C. and maintained for 4 h. After crushing, the mixture was washed with boiling water and dried to obtain a composite nanomaterial, which was then melt-spun to obtain carbon nanofibers.

[0035] Preparation of new carbon nano-anion wool strips: Carbon nanotube fibers, negative ion fibers and substrate fibers are blended in a mass ratio of 1:1:2 to obtain blended fibers. The fibers are spun on a carding machine at a speed of 300 r / min, a gauge of 5 μm, and a doffer speed of 18 r / min to remove short fibers (≤15 mm) and defects. The front zone drafting ratio is 5 times, the rear zone drafting ratio is 1.2 times, and the workshop humidity is 65% to obtain prefabricated wool tops. Finally, the fibers are passed through a 130°C hot air channel at a speed of 10 m / min to obtain new carbon nano negative ion wool tops after shaping.

[0036] Example 3 Preparation of modified tourmaline: 200 g of deionized water was mixed with 10.73 g of anhydrous ethanol, and a 5% by mass sodium hydroxide solution and dilute hydrochloric acid were added to obtain an ethanol solution having a pH value of 9; 24.39 g of tourmaline powder was added to the ethanol solution and ultrasonicated for 10 minutes to obtain a tourmaline dispersion; 4.88 g of vinyltrimethoxysilane was mixed with deionized water to obtain a vinyltrimethoxysilane solution, the tourmaline dispersion was stirred in a water bath at 60° C. for 10 minutes, and then the vinyltrimethoxysilane solution was added, stirred for reaction for 2 hours, washed with ethanol, filtered and dried, and dried in an oven at 60° C. for 10 hours to obtain modified tourmaline.

[0037] Preparation of negative ion fiber: 10 g of modified tourmaline was mixed with 400 g of vinyl acetate. In an oil bath at 75°C, 1 g of azobisisobutyronitrile and 10 g of N,N-dimethylformamide were added. After stirring, the temperature was raised to 90°C. 1 g of dibenzoyl oxide and 80 g of styrene were added. After stirring for 1 hour, the temperature was raised to 100°C and stirred for 8 hours to obtain a polymer solution. Water was used as a coagulation bath and negative ion fibers were prepared by wet spinning.

[0038] Preparation of modified graphene oxide: Graphene oxide, deionized water and ethanol were mixed, ultrasonicated and freeze-dried to obtain pretreated graphene oxide; 10 g of the pretreated graphene oxide was mixed with 800 g of dimethyl sulfoxide and ultrasonicated for 1 hour to obtain a graphene oxide dispersion, 20 g of melamine was added to the graphene oxide dispersion, and ultrasonic treatment was continued for 1 hour, followed by the addition of 5 g of 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, the temperature was raised to 60°C, stirred for 6 hours, and then washed alternately with dimethyl sulfoxide, ethanol and deionized water, and vacuum dried at 80°C for 8 hours to obtain modified graphene oxide.

[0039] Preparation of carbon nanofibers: 6.45 g of modified graphene oxide, 9.22 g of carboxyl carbon nanotubes and 184.33 g of hexamethylenediamine adipate were mixed and ground to obtain a mixture. The mixture was heated to 190° C. and stirred for 90 min under a nitrogen atmosphere, then heated to 220° C. and maintained for 2 h, and finally heated to 280° C. and maintained for 4 h. After crushing, the mixture was washed with boiling water and dried to obtain a composite nanomaterial. After melt spinning, carbon nanofibers were obtained.

[0040] Preparation of new carbon nano negative ion strips: Carbon nanotube fibers, negative ion fibers and substrate fibers are blended in a mass ratio of 1:1:2 to obtain blended fibers. The fibers are spun on a carding machine at a speed of 300 r / min, a gauge of 5 μm, and a doffer speed of 18 r / min to remove short fibers (≤15 mm) and defects. The front zone drafting ratio is 5 times, the rear zone drafting ratio is 1.2 times, and the workshop humidity is 65% to obtain prefabricated wool tops. Finally, the fibers are passed through a 130°C hot air channel at a speed of 10 m / min to obtain new carbon nano negative ion wool tops after shaping.

[0041] Example 4 Example 4 is based on Example 3. In Example 4, when preparing modified tourmaline, 25.64 g of tourmaline powder, 5.13 g of vinyltrimethylsilane, and 9.23 g of ethanol are used.

[0042] Example 5 Example 5 is based on Example 3. In Example 5, when preparing modified tourmaline, 23.26 g of tourmaline powder, 4.56 g of vinyltrimethylsilane, and 12.09 g of ethanol are used.

[0043] Example 6 Example 6 is based on Example 3. In Example 6, when preparing the modified tourmaline, the pH of the ethanol solution is 7.5.

[0044] Example 7 Example 7 is based on Example 3. In Example 7, when preparing the modified tourmaline, the pH of the ethanol solution is 10.5.

[0045] Example 8 Example 8 is based on Example 3. In Example 8, when preparing nanotube fibers, 2.82 g of modified graphene, 9.39 g of carbon nanotubes, and 187.79 g of hexamethylenediamine adipate are used.

[0046] Example 9 Example 9 is based on Example 3. In Example 9, when preparing nanotube fibers, 9.95 g of modified graphene, 9.05 g of carbon nanotubes, and 181 g of hexamethylenediamine adipate are used.

[0047] Example 10 Example 10 is based on Example 3. In Example 10, when preparing nanotube fibers, the modified graphene is replaced with ordinary graphene.

[0048] Example 11 Example 11 is based on Example 3. In Example 11, when preparing nanotube fibers, all modified graphene is replaced by carbon nanotubes.

[0049] Example 12 Example 12 is based on Example 3. In Example 12, all carbon nanotubes are replaced with modified graphene in the nanofibers.

[0050] Comparative Example 1 Comparative Example 1 is based on Example 3. In Comparative Example 1, when preparing the negative ion fiber, the modified tourmaline is replaced by ordinary tourmaline.

[0051] Performance testing The following performance tests were performed on the samples of Examples 1-12 and Comparative Example 1: (1) Negative ion release function test The negative ion release of the samples was tested according to GB / T 30128-2013. Each sample was tested 3 times, and the average value was taken. The test results were filled in Table 1.

[0052] (2) Breaking strength With reference to GB / T 27629-2011, the breaking strength of the samples was tested. Each sample was tested three times, the average value was taken, and the test results were filled in Table 1.

[0053] Table 1 Performance test results of Examples 1-12 and Comparative Example 1 As shown in Table 1, the negative ion release rates of Examples 1-3 are all above 3000 / cm 3 And above, it shows that the carbon nano negative ion wool tops prepared in the present application have good negative ion generating performance; the breaking strengths of Examples 1-3 are all 77.6 cN and above, which shows that the carbon nano negative ion wool tops prepared in the present application have good stability.

[0054] In Example 4 and Example 5, when preparing modified tourmaline, the mass ratio of tourmaline powder, vinyltrimethylsilane and ethanol is not within the range defined in the present application. When the content of ethanol is too little, it is difficult to further promote the hydrolysis of vinyltrimethylsilane, and it is difficult to increase the interfacial tension, the contact area is difficult to further improve, and the modification effect of tourmaline is difficult to further improve. When the content of ethanol is too much, the stability of the system decreases, the modification of tourmaline is difficult to further promote, and the tourmaline agglomerates in the system, affecting the overall stability of the system. Therefore, the performance of Example 4 and Example 5 is reduced.

[0055] In Examples 6 and 7, when preparing modified tourmaline, the pH of the ethanol solution was not within the range specified in the present application. When the pH of the ethanol solution was too low, it was difficult to further promote the hydrolysis of vinyltrimethylsilane, which affected the modification of the tourmaline powder. When the pH of the ethanol solution was too high, the overall activation value of the system was also affected, and the stability of the system decreased. Therefore, the performance of Examples 6 and 7 decreased.

[0056] In Examples 8 and 9, when preparing nanotube fibers, the mass ratios of modified graphene, carbon nanotubes, and hexamethylenediamine adipate are not within the range specified in this application. When the content of modified graphene is too little or too much, it is difficult to further enhance the overall crystallization of the system, which affects the overall stability of the system. Therefore, the performance of Examples 8 and 9 is reduced.

[0057] In Example 10, when preparing nanotube fibers, the modified graphene was replaced with ordinary graphene. The active sites of the unmodified graphene decreased, the compatibility decreased, and it was difficult to disperse evenly in the system. The graphene oxide agglomerated, affecting the overall comprehensive performance of the system.

[0058] In Example 11, when preparing the nanotube fibers, no carbon nanotubes were added. The single modified graphene was difficult to synergistically improve the overall thermal stability and mechanical properties of the system, so the performance of Example 11 was reduced.

[0059] In Example 12, when preparing nanotube fibers, modified graphene was not added. The carbon nanotubes that were not combined with the modified graphene agglomerated in the system and could not synergistically improve the overall stability and mechanical properties of the system. Therefore, the performance of Example 12 decreased.

[0060] In Comparative Example 1, when preparing negative ion fibers, modified tourmaline was replaced with ordinary tourmaline. The unmodified tourmaline powder was difficult to disperse evenly in the system and agglomerated, which affected the stability of the prepared wool strips. Therefore, the performance of Comparative Example 1 was reduced.

[0061] This specific embodiment is merely an explanation of the present application and does not limit the present application. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present application. The technical scope of the present application is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A new type of carbon nano negative ion wool top, characterized by: The invention comprises substrate fiber, carbon nanofiber and negative ion fiber, wherein the raw materials of the negative ion fiber include modified tourmaline, polystyrene and vinyl acetate.

2. The novel carbon nano negative ion wool top according to claim 1, characterized in that: The modified tourmaline is prepared by the following method: Water and ethanol are mixed, and sodium hydroxide solution and dilute hydrochloric acid are added to obtain an ethanol solution; tourmaline powder is added to the ethanol solution, and ultrasonic treatment is performed to obtain a tourmaline dispersion; vinyltrimethoxysilane is mixed with water to obtain a vinyltrimethoxysilane solution, the tourmaline dispersion is stirred in a water bath, and then the vinyltrimethoxysilane solution is added, the reaction is stirred, the mixture is washed, filtered, and dried to obtain a modified tourmaline.

3. The novel carbon nano negative ion wool top according to claim 2, characterized in that: The mass ratio of the tourmaline powder, vinyltrimethoxysilane and ethanol is 5:1:(2-2.4).

4. The novel carbon nano negative ion wool top according to claim 2, characterized in that: The pH value of the ethanol solution is 8.5-9.

5.

5. The novel carbon nano negative ion wool top according to claim 1, characterized in that: The carbon nanofibers include carboxyl carbon nanotubes, modified graphene and polyhexamethylene adipamide.

6. The novel carbon nano negative ion wool top according to claim 5, characterized in that: The modified graphite raw material includes graphene oxide and melamine.

7. The novel carbon nano negative ion wool top according to claim 6, characterized in that: The modified graphene is prepared by the following method: Graphene oxide, water and ethanol are mixed and ultrasonically treated, and the mixture is freeze-dried to obtain pretreated graphene oxide; the pretreated graphene oxide and dimethyl sulfoxide are mixed and ultrasonically treated to obtain a graphene oxide dispersion, melamine is added to the graphene oxide dispersion and ultrasonically treated, and then 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate is added, the mixture is heated and stirred, and then washed and dried to obtain modified graphene oxide.

8. The novel carbon nano negative ion wool top according to claim 7, characterized in that: The carbon nanofiber is prepared by the following method: The modified graphene oxide, carboxyl carbon nanotubes and hexamethylenediamine adipate are mixed to obtain a mixture, the mixture is heated and stirred, washed and then dried to obtain a composite nanomaterial, and the carbon nanofiber is obtained after melt spinning.

9. The novel carbon nano negative ion wool top according to claim 8, characterized in that: The mass ratio of the modified graphene, carboxyl carbon nanotubes and polyhexamethylene adipamide is (0.5-0.9):1:

20.

10. A method for preparing the novel carbon nano negative ion wool top according to any one of claims 1 to 9, characterized in that: The steps include: The carbon nanotube fiber, negative ion fiber and base material fiber are blended in a mass ratio to obtain a blended fiber, which is then passed through a carding machine to remove short fibers and defects to obtain a prefabricated top. Finally, the prefabricated top is shaped through a hot air channel to obtain a new type of carbon nano negative ion top.

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