Antistatic yarn, method for its production and antistatic fabric

Abstract

The application belongs to the technical field of textile fabric, and relates to an antistatic yarn, a preparation method thereof and an antistatic fabric. The antistatic yarn comprises 1-4 parts by mass of antistatic nanofibers, 20-45 parts by mass of modal cotton fibers, 10-15 parts by mass of soybean fibers and 36-60 parts by mass of polyester fibers; the antistatic nanofibers are spun from an antistatic spinning solution comprising polyester and single-layer modified graphene. The antistatic yarn, the preparation method thereof and the antistatic fabric in the application can make the polyester fabric have antistatic performance by adding the antistatic nanofiber blending, so that the yarn and the fabric obtained have certain conductive performance and excellent wearing performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to an antistatic yarn, a preparation method thereof and an antistatic fabric. BACKGROUND

[0002] Textile materials made of polyester, spandex, chlorofiber and other synthetic fibers are electric insulator materials, and generally have high specific resistance. Therefore, when the fibers rub against each other or other materials during textile processing and use, the static electricity generated is not easy to dissipate and accumulates, that is, the leakage rate is less than the rate of charge generation, causing static electricity. After the clothes are charged, a large number of dust particles are adsorbed, which are easy to contaminate a large number of viruses, bacteria and substances harmful to the human body in dust, and the clothes and the human body, the clothes and the clothes also have the phenomenon of entanglement or local release of electric sparks, causing a tingling and uncomfortable electric shock. Therefore, static electricity interferes with the smooth progress of processing, affects the quality of products and the wearing performance of fabrics, etc. When static electricity is serious, sparks will be generated due to discharge, causing fire and serious consequences.

[0003] Efficient removal of static electricity in textile fabrics is a technical problem to be solved at present. The traditional antistatic processing method of textile fabric generally uses antistatic agents for antistatic finishing of the fabric or realizes it by changing the properties of the yarn, but the former is not durable and uncomfortable, and causes a certain degree of pollution in the production process, so that the fabric cannot meet the requirements of Oeko-tex Standard 100. The obtained yarn has poor adhesion and is easy to fall off during weaving or use, the continuity is destroyed, and the functionality is lost. Therefore, there is an urgent need for a yarn with certain conductive properties and excellent wearing performance. SUMMARY

[0004] The present application provides an antistatic yarn with excellent conductive properties, a preparation method thereof and an antistatic fabric.

[0005] In a first aspect, the present application provides an antistatic yarn, which adopts the following technical solution:

[0006] The antistatic yarn comprises 1-4 parts by mass of antistatic nanofiber, 20-45 parts by mass of modal cotton fiber, 10-15 parts by mass of soybean fiber and 36-60 parts by mass of polyester fiber; and the antistatic nanofiber is woven from an antistatic spinning solution comprising polyester and single-layer modified graphene.

[0007] By adopting the above technical solution, the modal cotton fiber, soybean fiber and antistatic nanofiber are mixed and added in the polyester fiber to prepare the antistatic yarn, thereby preparing an antistatic fabric with excellent wearing performance, effectively improving the hand comfort degree of the textile fabric, and having good elasticity and stable and durable antistatic effect, thereby expanding the application range of the antistatic fabric.

[0008] The anti-static nanofiber prepared by the anti-static spinning solution prepared from the polyester and the single-layer graphene and spun by the solution jet method has more stable and persistent anti-static performance, and maintains considerable anti-static performance in subsequent weaving and repeated washing processes.

[0009] Modal fiber is a fiber extracted from pure natural wood pulp, and has no electrostatic characteristics. Modal fiber is a natural and pollution-free environmentally friendly fiber. Modal fiber has soft texture and excellent moisture absorption. Mixing modal fiber with other fibers can greatly improve the anti-static performance of yarn and enhance the comfort of fabric.

[0010] Soybean fiber is a fiber with strong hydrophilicity, so it is not easy to accumulate static electricity, thereby further reducing the stimulation of static electricity to the human body and improving the static electricity phenomenon. It has soft hand feeling, warmth and good skin-friendly performance.

[0011] In a specific embodiment, the mass ratio of the polyester and the single-layer modified graphene is 1:(20-30).

[0012] By adopting the above technical scheme, the anti-static nanofiber prepared by adding polyester and single-layer modified graphene can effectively improve the mechanical properties of conductive fibers, and graphene has a smooth effect, which improves the smoothness of fabric fibers. Through modification of single-layer graphene, graphene and polyester interact better, so that the anti-static nanofiber is more firm, greatly increases the persistent stability and spinnability of the fiber conductive capacity, makes the fiber softer, and effectively reduces the influence of the strong mechanical properties of graphene on the softness of the fiber.

[0013] In a specific embodiment, the single-layer modified graphene is single-layer graphene grafted with dodecyl gallate. The preparation method of the single-layer graphene grafted with dodecyl gallate is as follows: 2-5 parts by mass of single-layer graphene is mixed with 7-9 parts by mass of strong oxidizing acid, stirred and refluxed, filtered to obtain graphene oxide; 11-14 parts by mass of acylation reagent is added and stirred and refluxed, filtered and washed to obtain acylated graphene; the acylated graphene is mixed with 50-80 parts by mass of diamine, and the reaction is carried out at a temperature of 50-70°C for 12-20h, and then washed and dried to obtain graphene oxide with active amino groups on the surface. 1-2 parts by mass of the amino-functionalized graphene oxide is added to 1-6 parts by mass of dodecyl gallate, and the reaction is carried out to obtain single-layer graphene grafted with dodecyl gallate.

[0014] By adopting the technical scheme, the graphene is first oxidized by a strong oxidant, then the oxidized graphene is reacted with an acylation reagent to make the graphene have active groups, then a binary amine is introduced, then the amino-modified graphene is obtained, the amino-modified graphene is reacted with gallic acid dodecyl ester to prepare the graphene gallic acid dodecyl ester, the graphene is grafted with the gallic acid dodecyl ester having high viscosity, the bonding strength of the polyester and the modified graphene is improved, the antistatic performance of the antistatic nanofiber cannot be lost in the weaving or use process, and the antistatic nanofiber can be effectively adhered to modal cotton fibers, soybean fibers and polyester fibers, so that the antistatic nanofiber modal cotton fibers, soybean fibers and polyester fibers are firmly combined, and the mechanical properties of the antistatic yarn are enhanced.

[0015] In a specific implementable embodiment, the monolayer graphene has a sheet diameter of 0.3-0.6 μm and a thickness of 2-4 nm, and the polyester has a melting point of 110-130 °C.

[0016] By adopting the technical scheme, the monolayer graphene with a certain size and thickness ensures the antistatic effect of the antistatic nanofiber, prevents the rigidity of the graphene itself from affecting the comfort, softness and elasticity of the antistatic yarn, ensures the mechanical properties of the yarn as a whole, and the polyester with a certain melting point has a suitable molecular weight, so that the antistatic nanofiber has a certain softness and elasticity, the bonding strength of the polyester and the modified graphene is higher, and the antistatic property is stable and durable.

[0017] In a specific implementable embodiment, the mass ratio of the gallic acid dodecyl ester and the amino-modified graphene is 1:1-3.

[0018] By adopting the technical scheme, the amino-modified graphene and the gallic acid dodecyl ester are reacted in a certain ratio, the active amino group of the graphene is reacted with the ester group, and the gallic acid dodecyl ester having high viscosity and antibacterial performance is more effectively grafted onto the graphene.

[0019] In a specific implementable embodiment, the reaction conditions are that the reaction is stirred at 160-210 °C for 8-10 h under a nitrogen atmosphere.

[0020] By adopting the technical scheme, the temperature of the amino and ester group reaction is controlled to ensure that the gallic acid dodecyl ester is smoothly grafted onto the graphene and the antistatic effect of the graphene is ensured.

[0021] In a second aspect, the application provides a preparation method of the antistatic yarn, which adopts the following technical scheme:

[0022] The preparation method of the antistatic yarn comprises the following steps:

[0023] S1: mixing modal cotton fiber, soybean fiber and polyester fiber in a certain proportion to prepare a sliver, and spinning into a single fiber; S2: spinning the single fiber into a core yarn;

[0024] S3: the antistatic nanofiber is coated on the core yarn by solution jetting method from the antistatic spinning solution to obtain an antistatic yarn.

[0025] By adopting the above technical scheme, the dodecyl gallate with adhesion on the antistatic fiber is more firmly adhered to the mixed fiber prepared by mixing the modal cotton fiber, the soybean fiber and the polyester fiber in a certain proportion, the antistatic nanofiber is uniformly distributed in the antistatic yarn, the specific resistance of the antistatic nanofiber reaches the standard of antistatic, the hygroscopicity and the hydrophilicity of the antistatic yarn are improved, and the antistatic performance of the yarn is further improved.

[0026] In a specific implementable scheme, the count of the antistatic yarn is 28-32 m / g.

[0027] By adopting the above technical scheme, the antistatic yarn has better antistatic performance and hygroscopicity effect, the yarn is uniform and smoother.

[0028] In a third aspect, the application provides an antistatic fabric, which adopts the following technical scheme: the antistatic fabric is made of the antistatic yarn.

[0029] By adopting the above technical scheme, the antistatic yarn is interwoven with the warp and weft yarns to form a gray fabric, so that the fabric spun out has a smooth and soft hand feeling, is comfortable to wear, has good flexibility, good wearability, and is durable.

[0030] In summary, the application has at least one of the following beneficial technical effects:

[0031] 1. The modal cotton fiber, the soybean fiber and the polyester fiber are mixed in a certain proportion to form a core yarn, and then the antistatic nanofiber is used as a core yarn to coat the mixed core yarn, so that the dodecyl gallate with adhesion on the antistatic fiber is more firmly adhered to the mixed fiber prepared by mixing the modal cotton fiber, the soybean fiber and the polyester fiber, the antistatic nanofiber is uniformly distributed in the antistatic yarn, the specific resistance of the antistatic nanofiber reaches the standard of antistatic, the hygroscopicity and the hydrophilicity of the antistatic yarn are improved, and the antistatic performance of the yarn is further improved.

[0032] 2. The graphene is oxidized by a strong oxidant, then the graphene oxide is reacted with an acylating agent to make the graphene have active groups, then a binary amine is introduced, then the amino-functionalized graphene is obtained, the amino-functionalized graphene is reacted with dodecyl gallate to prepare graphene dodecyl gallate, the dodecyl gallate with high viscosity is grafted on the graphene to improve the bonding strength of the polyester and the modified graphene, so that the antistatic performance of the antistatic nanofiber will not be lost in the weaving or repeated washing process, and can effectively adhere to modal cotton fibers, soybean fibers and polyester fibers, etc., so that the antistatic nanofiber modal cotton fiber, soybean fiber and polyester fiber are firmly combined, and the mechanical properties of the antistatic yarn are enhanced. DETAILED DESCRIPTION

[0033] Some raw materials used in the preparation examples and examples:

[0034] The strong oxidizing acid is 68% concentrated nitric acid: the concentrated nitric acid is purchased from Jianyang Xincheng Chemical Co., Ltd., and water is added to dilute it to 68% concentrated nitric acid; dodecyl gallate is purchased from Wuhan Jixinyibang Biological Technology Co., Ltd.; the single-layer graphene brand is NO-C-066-1; the acylating agent is dichlorosulfoxide; the polyester is a low-melting-point polyester chip: purchased from Dongguan Aoyuan Plastic Raw Material Co., Ltd.; polyester fiber: diameter is 15 μm, purchased from Taian Haosong Fiber Co., Ltd.; modal cotton fiber: diameter is 20 μm, purchased from Shandong Aorong Garments Co., Ltd.; soybean fiber: diameter is 6 μm, purchased from Hefei Shengrun Biological Products Co., Ltd.

[0035] The unmarked related raw materials used in the examples and comparative examples are all conventional products that can be purchased in the market.

[0036] Preparation Example

[0037] Preparation Example 1

[0038] In a 500ml three-necked flask, graphene with a flake size of 0.3pm and a thickness of 2nm was added, 7g of potassium permanganate and 150ml of concentrated nitric acid were added, and after ultrasonic treatment, heating was performed at 120°C, stirring was performed under reflux for 20h, filtration was performed, and graphene oxide was obtained. Then, 11g of dichlorosulfoxide was added, and after ultrasonic treatment, heating was performed at 70°C, stirring was performed under reflux for 18h, suction filtration was performed, and deionized water was used for washing, and acylated graphene was obtained. Then, 50g of ethylenediamine was added, and after ultrasonic treatment, heating was performed at 50°C, stirring was performed under reflux for 12h, suction filtration was performed, deionized water was used for washing, and vacuum drying was performed at 60°C, and graphene oxide with active amino groups on the surface was obtained. 1g of the amino-functionalized graphene oxide and 1g of dodecyl gallate were taken, the mass ratio of dodecyl gallate to the amino-functionalized graphene oxide was 1:1, and under a nitrogen atmosphere, stirring was performed at 160°C for 8h, and single-layer modified graphene was prepared. The obtained single-layer modified graphene was mixed with low-melting polyester chips at a mass ratio of 20:1, 200ml of dichloromethane was added, and then an antistatic spinning solution was formed by dispersion.

[0039] Preparation Example 2

[0040] In a 500ml three-necked flask, graphene with a flake size of 0.6pm and a thickness of 4nm was added, 9g of potassium permanganate and 150ml of concentrated nitric acid were added, and after ultrasonic treatment, heating was performed at 120°C, stirring was performed under reflux for 20h, filtration was performed, and graphene oxide was obtained. Then, 14g of dichlorosulfoxide was added, and after ultrasonic treatment, heating was performed at 70°C, stirring was performed under reflux for 18h, suction filtration was performed, and deionized water was used for washing, and acylated graphene was obtained. Then, 80g of ethylenediamine was added, and after ultrasonic treatment, heating was performed at 70°C, stirring was performed under reflux for 20h, suction filtration was performed, deionized water was used for washing, and vacuum drying was performed at 60°C, and graphene oxide with active amino groups on the surface was obtained. 2g of the amino-functionalized graphene oxide and 6g of dodecyl gallate were taken, the mass ratio of dodecyl gallate to the amino-functionalized graphene oxide was 3:1, and under a nitrogen atmosphere, stirring was performed at 210°C for 10h, and single-layer modified graphene was prepared. The obtained single-layer modified graphene was mixed with low-melting polyester chips at a mass ratio of 30:1, 200ml of dichloromethane was added, and then an antistatic spinning solution was formed by dispersion.

[0041] Preparation Example 3

[0042] In a 500ml three-necked flask, graphene with a flake size of 0.3μm and a thickness of 2nm was added, followed by 7g of potassium permanganate and 150ml of concentrated nitric acid. After ultrasonic treatment, the mixture was heated to 120℃ and stirred for 20h. The graphene oxide was obtained by filtration. Then 11g of dichlorosulfoxide was added, and the mixture was heated to 70℃ and stirred for 18h. The acylated graphene was obtained by filtration and washing with deionized water. Then 50g of ethylenediamine was added, and the mixture was heated to 50℃ and stirred for 12h. The amino-functionalized graphene oxide was obtained by filtration, washing with deionized water, and vacuum drying at 60℃. The amino-functionalized graphene oxide was mixed with gallic acid dodecyl ester in a mass ratio of 2:1, and the mixture was stirred at 160℃ for 8h under a nitrogen atmosphere to obtain single-layer modified graphene. The single-layer modified graphene was mixed with low-melting polyester chips in a mass ratio of 20:1, and then 200ml of dichloromethane was added to form an antistatic spinning solution.

[0043] Preparation Example 4

[0044] In a 500ml three-necked flask, graphene with a flake size of 0.3μm and a thickness of 2nm was added, followed by 7g of potassium permanganate and 150ml of concentrated nitric acid. After ultrasonic treatment, the mixture was heated to 120℃ and stirred for 20h. The graphene oxide was obtained by filtration. Then 11g of dichlorosulfoxide was added, and the mixture was heated to 70℃ and stirred for 18h. The acylated graphene was obtained by filtration and washing with deionized water. Then 50g of ethylenediamine was added, and the mixture was heated to 50℃ and stirred for 12h. The amino-functionalized graphene oxide was obtained by filtration, washing with deionized water, and vacuum drying at 60℃. The amino-functionalized graphene oxide was mixed with gallic acid dodecyl ester in a mass ratio of 2:1, and the mixture was stirred at 160℃ for 8h under a nitrogen atmosphere to obtain single-layer modified graphene. The single-layer modified graphene was mixed with low-melting polyester chips in a mass ratio of 20:1, and then 200ml of dichloromethane was added to form an antistatic spinning solution.

[0045] Example

[0046] Example 1

[0047] The antistatic yarn comprises antistatic nanofibers, modal cotton fibers, soybean fibers, and polyester fibers. The number of the antistatic yarn is 28m / g. The preparation method of the antistatic yarn comprises the following steps:

[0048] 20Kg modal cotton fiber, 10Kg soybean fiber and 36Kg polyester fiber were fed into a cotton mixer and added in three times, and then evenly mixed, and fed into a carding machine to form mixed sliver, and then spun into single fiber, and then the single fiber was spun into core yarn, and the spinning speed was 280m / min; then the antistatic spinning solution prepared in Preparation Example 1 was spun onto the core yarn by solution spraying method to obtain antistatic yarn. In the process of solution spraying method spinning, the flow rate of the spinning solution was 10mL / h, the air pressure of the compressed air was 0.1MPa, the solution spraying method spinning distance was 25cm, and the mass of the antistatic nanofiber coating layer was 1Kg.

[0049] Example 2

[0050] The antistatic yarn comprises antistatic nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the count of the antistatic yarn is 28m / g, and the preparation method of the antistatic yarn comprises the following steps:

[0051] 32Kg modal cotton fiber, 12Kg soybean fiber and 46Kg polyester fiber were fed into a cotton mixer and added in three times, and then evenly mixed, and fed into a carding machine to form mixed sliver, and then spun into single fiber, and then the single fiber was spun into core yarn, and the spinning speed was 280m / min; then the antistatic spinning solution prepared in Preparation Example 1 was spun onto the core yarn by solution spraying method to obtain antistatic yarn. In the process of solution spraying method spinning, the flow rate of the spinning solution was 10mL / h, the air pressure of the compressed air was 0.1MPa, the solution spraying method spinning distance was 25cm, and the mass of the antistatic nanofiber coating layer was 2Kg.

[0052] Example 3

[0053] The antistatic yarn comprises antistatic nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the count of the antistatic yarn is 30m / g, and the preparation method of the antistatic yarn comprises the following steps:

[0054] 45Kg modal cotton fiber, 15Kg soybean fiber and 60Kg polyester fiber were fed into a cotton mixer and added in three times, and then evenly mixed, and fed into a carding machine to form mixed sliver, and then spun into single fiber, and then the single fiber was spun into core yarn, and the spinning speed was 280m / min; then the antistatic spinning solution prepared in Preparation Example 1 was spun onto the core yarn by solution spraying method to obtain antistatic yarn. In the process of solution spraying method spinning, the flow rate of the spinning solution was 10mL / h, the air pressure of the compressed air was 0.1MPa, the solution spraying method spinning distance was 25cm, and the mass of the antistatic nanofiber coating layer was 1Kg.

[0055] Example 4

[0056] The anti-static yarn comprises anti-static nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the anti-static yarn has a count of 32 m / g, and the preparation method of the anti-static yarn comprises the following steps:

[0057] 45 Kg of modal cotton fiber, 15 Kg of soybean fiber and 60 Kg of polyester fiber are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed sliver, spun into single fiber, and then the single fiber is spun into core yarn at a spinning speed of 280 m / min; then the anti-static spinning solution prepared in the preparation example 1 is spun onto the core yarn by a solution spraying method to obtain the anti-static yarn. In the process of the solution spraying method spinning, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying method spinning distance is 25 cm, and the mass of the anti-static nanofiber coating layer is 1 Kg.

[0058] Example 5

[0059] The anti-static yarn comprises anti-static nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the anti-static yarn has a count of 32 m / g, and the preparation method of the anti-static yarn comprises the following steps:

[0060] 45 Kg of modal cotton fiber, 15 Kg of soybean fiber and 60 Kg of polyester fiber are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed sliver, spun into single fiber, and then the single fiber is spun into core yarn at a spinning speed of 280 m / min; then the anti-static spinning solution prepared in the preparation example 1 is spun onto the core yarn by a solution spraying method to obtain the anti-static yarn. In the process of the solution spraying method spinning, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying method spinning distance is 25 cm, and the mass of the anti-static nanofiber coating layer is 1 Kg.

[0061] Example 6

[0062] The anti-static yarn comprises anti-static nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the anti-static yarn has a count of 32 m / g, and the preparation method of the anti-static yarn comprises the following steps:

[0063] 45 Kg of modal cotton fiber, 15 Kg of soybean fiber and 60 Kg of polyester fiber are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed sliver, spun into single fiber, and then the single fiber is spun into core yarn at a spinning speed of 280 m / min; then the anti-static spinning solution prepared in the preparation example 1 is spun onto the core yarn by a solution spraying method to obtain the anti-static yarn. In the process of the solution spraying method spinning, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying method spinning distance is 25 cm, and the mass of the anti-static nanofiber coating layer is 1 Kg.

[0064] Example 7

[0065] The anti-static yarn comprises anti-static nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the anti-static yarn has a count of 32 m / g, and the preparation method of the anti-static yarn comprises the following steps:

[0066] 45 Kg of modal cotton fiber, 15 Kg of soybean fiber and 60 Kg of polyester fiber are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed sliver, spun into single fiber, and then the single fiber is spun into core yarn at a spinning speed of 280 m / min; then the anti-static spinning solution prepared in Preparation Example 3 is spun onto the core yarn by solution spraying method to obtain the anti-static yarn. In the process of solution spraying method spinning, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying method spinning distance is 25 cm, and the mass of the anti-static nanofiber coating layer is 4 Kg.

[0067] Example 8

[0068] The anti-static yarn comprises anti-static nanofiber, modal cotton fiber, soybean fiber and polyester fiber; wherein the anti-static yarn has a count of 32 m / g, and the preparation method of the anti-static yarn comprises the following steps:

[0069] 45 Kg of modal cotton fiber, 15 Kg of soybean fiber and 60 Kg of polyester fiber are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed sliver, spun into single fiber, and then the single fiber is spun into core yarn at a spinning speed of 280 m / min; then the anti-static spinning solution prepared in Preparation Example 3 is spun onto the core yarn by solution spraying method to obtain the anti-static yarn. In the process of solution spraying method spinning, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying method spinning distance is 25 cm, and the mass of the anti-static nanofiber coating layer is 4 Kg.

[0070] Example 9

[0071] The anti-static fabric is made of the anti-static yarn in Example 1.

[0072] Example 10

[0073] The anti-static fabric is made of the anti-static yarn in Example 2.

[0074] Example 11

[0075] The anti-static fabric is made of the anti-static yarn in Example 3.

[0076] Example 12

[0077] An antistatic fabric made from the antistatic yarn of Example 5.

[0078] Example 13

[0079] An antistatic fabric made from the antistatic yarn of Example 5.

[0080] Example 14

[0081] An antistatic fabric made from the antistatic yarn of Example 6.

[0082] Example 15

[0083] An antistatic fabric made from the antistatic yarn of Example 7.

[0084] Example 16

[0085] An antistatic fabric made from the antistatic yarn of Example 8.

[0086] Comparative Example 1

[0087] The antistatic yarn comprises antistatic nanofibers, soybean fibers and polyester fibers; wherein the count of the antistatic yarn is 32 m / g, and the preparation method of the antistatic yarn comprises the following steps:

[0088] 15 Kg of soybean fibers and 105 Kg of polyester fibers are fed into a cotton mixer and added in three times, uniformly mixed, fed into a carding machine to form mixed slivers, spun into single fibers, and then the single fibers are spun into core yarns at a spinning speed of 280 m / min; then the antistatic spinning solution prepared in Preparation Example 1 is spun onto the core yarns by a solution spraying method to obtain the antistatic yarn. In the process of the solution spraying method, the flow rate of the spinning solution is 10 mL / h, the air pressure of the compressed air is 0.1 MPa, the solution spraying distance is 25 cm, and the mass of the antistatic nanofiber coating layer is 4 Kg.

[0089] Comparative Example 2

[0090] The antistatic yarn comprises antistatic nanofibers, modal cotton fibers and polyester fibers; wherein the count of the antistatic yarn is 32 m / g, and the preparation method of the antistatic yarn comprises the following steps:

[0091] 45 Kg of modal cotton fibers and 75 Kg of polyester fibers were fed into a cotton mixer and added in three times, and after uniform mixing, they were fed into a carding machine to form mixed slivers, and then spun into single fibers, and then the single fibers were spun into core yarns at a spinning speed of 280 m / min; then the antistatic spinning solution prepared in Preparation Example 1 was spun onto the core yarns by a solution spraying method to obtain antistatic yarns. In the process of the solution spraying method, the flow rate of the spinning solution was 10 mL / h, the air pressure of the compressed air was 0.1 MPa, the solution spraying distance was 25 cm, and the mass of the antistatic nanofiber coating layer was 4 Kg.

[0092] Comparative Example 3

[0093] The antistatic yarns included modal cotton fibers, soybean fibers, and polyester fibers; wherein the count of the antistatic yarns was 32 m / g, and the preparation method of the antistatic yarns included the following steps:

[0094] 45 Kg of modal cotton fibers, 15 Kg of soybean fibers, and 60 Kg of polyester fibers were fed into a cotton mixer and added in three times, and after uniform mixing, they were fed into a carding machine to form mixed slivers, and then spun into single fibers, and then the single fibers were spun into core yarns at a spinning speed of 280 m / min; and then the antistatic yarns were obtained.

[0095] Comparative Example 4

[0096] The antistatic yarns included antistatic nanofibers, modal cotton fibers, soybean fibers, and polyester fibers; wherein the count of the antistatic yarns was 32 m / g, and the preparation method of the antistatic yarns included the following steps:

[0097] 45 Kg of modal cotton fibers, 15 Kg of soybean fibers, and 60 Kg of polyester fibers were fed into a cotton mixer and added in three times, and after uniform mixing, they were fed into a carding machine to form mixed slivers, and then spun into single fibers, and then the single fibers were spun into core yarns at a spinning speed of 280 m / min; then the single-layer graphene and low-melting-point polyester chips were mixed in a mass ratio of 20:1, and then spun onto the core yarns by a solution spraying method to obtain antistatic yarns. In the process of the solution spraying method, the flow rate of the spinning solution was 10 mL / h, the air pressure of the compressed air was 0.1 MPa, the solution spraying distance was 25 cm, and the mass of the antistatic nanofiber coating layer was 4 Kg.

[0098] Comparative Example 5

[0099] The antistatic fabric was made of the antistatic yarns in Comparative Example 1.

[0100] Comparative Example 6

[0101] The antistatic fabric was made of the antistatic yarns in Comparative Example 2.

[0102] Comparative Example 7

[0103] Antistatic fabric made of the antistatic yarn in Comparative Example 3.

[0104] Comparative Example 8

[0105] Antistatic fabric made of the antistatic yarn in Comparative Example 4.

[0106] Performance test

[0107] The performance test of the antistatic fabric prepared in Examples 9-16 and Comparative Examples 5-8 was carried out by the following method.

[0108] Strength performance: GB / T 3916-2013 "Determination of breaking force and elongation at break of single yarn of textile package yarn"

[0109] Antistatic performance: The resistivity of the antistatic fabric was determined according to GB / T 12703 "Evaluation of static performance of textiles", the test content and test data are as follows: the fabric size is 5 cm x 5 cm, the specific resistance Rs of the surface of the antistatic textile fabric (the resistance between the corresponding edges of the sample per square unit) is used to represent, at the same time, the antistatic performance of the fabric is tested again after the antistatic textile fabric is washed for 30 times, and the test results are shown in Table 1:

[0110] Table 1 Performance test results

[0111]

[0112] The antistatic performance of the antistatic fabric prepared in Examples 9-16 is good, and the antistatic performance changes little after being washed for 30 times, and still has good antistatic effect, and at the same time, the fabric is comfortable, smooth and crisp.

[0113] It can be seen from Examples 9-14 and Examples 15-16 and Comparative Examples 7-8 that the antistatic yarn and the antistatic fabric in Comparative Examples 3-4 are not as good as the antistatic fabric prepared in Examples 1-6 in terms of strength and antistatic performance. It is analyzed that by grafting dodecyl gallate with high viscosity on graphene, the bonding strength of polyester and modified graphene is improved, so that the antistatic performance of the antistatic nanofiber will not be lost during weaving or multiple washing, and can effectively adhere to modal cotton fiber, soybean fiber and polyester fiber, etc., so that the antistatic nanofiber modal cotton fiber, soybean fiber and polyester fiber are firmly combined, and the mechanical properties of the antistatic yarn are enhanced. The antistatic yarn and the antistatic fabric prepared in Comparative Examples 9-13 have lower strength and antistatic performance than the antistatic fabric prepared in Examples 15-16. It is analyzed that within a certain range, the mixing ratio of polyester and single-layer modified graphene can enhance the durability and stability of the antistatic performance, and also can improve the softness and spinnability of the fiber.

[0114] From the comparison of examples 9-16 and comparative examples 5-6, it can be seen that the antistatic yarn and the antistatic fabric in comparative examples 5-6 are not as good as the antistatic fabric prepared in examples 9-16 in terms of wearability and antistatic performance. It is analyzed that the wearability of the antistatic fabric is good, the hand comfort degree of the textile fabric is effectively improved, and the antistatic fabric has good elasticity and stable and durable antistatic effect, and good skin friendliness by blending modal cotton fiber, soybean fiber and antistatic nanofiber in polyester fiber to prepare antistatic yarn.

[0115] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. Antistatic yarn, characterized in that: The antistatic yarn comprises 1-4 parts by weight of antistatic nanofibers, 20-45 parts by weight of modal cotton fibers, 10-15 parts by weight of soybean fibers and 36-60 parts by weight of polyester fibers; the antistatic nanofibers are spun from an antistatic spinning solution containing polyester and monolayer modified graphene. The modified monolayer graphene is monolayer graphene grafted with dodecyl gallate. The preparation method of monolayer graphene grafted with dodecyl gallate is as follows: 2-5 parts by mass of monolayer graphene are mixed with 7-9 parts by mass of a strong oxidizing acid, stirred and refluxed, and then filtered to obtain graphene oxide; 11-14 parts by mass of an acylation reagent are added and mixed, stirred and refluxed, filtered and washed to obtain acylated graphene; the acylated graphene is mixed with 50-80 parts by mass of a diamine and reacted at a temperature of 50-70℃ for 12-20 h, washed and dried to obtain graphene oxide with active amino groups on the surface; 1-2 parts by mass of the aminated graphene oxide are added to 1-6 parts by mass of dodecyl gallate to react and obtain monolayer graphene grafted with dodecyl gallate.

2. The antistatic yarn according to claim 1, characterized in that: The mass ratio of the polyester to the monolayer modified graphene is 1:(20-30).

3. The antistatic yarn according to claim 1, characterized in that: The single-layer graphene has a sheet diameter of 0.3-0.6 μm and a thickness of 2-4 nm, and the polyester is a polyester with a melting point of 110-130℃.

4. The antistatic yarn according to claim 1, characterized in that: The mass ratio of gallic acid dodecyl ester to aminated graphene oxide is 1:1-3.

5. The antistatic yarn according to claim 1, characterized in that: The reaction conditions are as follows: under a nitrogen atmosphere, at 160-210°C, with stirring for 8-10 hours.

6. The method for preparing the antistatic yarn according to claims 1-5, characterized in that: The process includes the following steps: S1: Prepare sliver by mixing modal cotton fiber, soybean fiber and polyester fiber in a certain proportion, and spin it into single fibers; S2: Spin the single fibers into core yarn. S3: Antistatic nanofibers are coated onto the core yarn by antistatic spinning solution through a solution spraying method to obtain antistatic yarn.

7. The method for preparing antistatic yarn according to claim 6, characterized in that: The antistatic yarn has a count of 28-32 m / g.

8. An antistatic fabric, characterized in that, It is made using the antistatic yarn described in claims 1-5.

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