Anti-sticking agent for aramid fiber and preparation method thereof

Abstract

The present application relates to the technical field of fiber anti-adhesive, in particular to an anti-adhesive for aramid fiber and a preparation method thereof, the anti-adhesive comprises: 0.75-3 parts of fatty acid modified inorganic anti-adhesive filler, 0.075-0.45 parts of anionic surfactant, 0.075-0.45 parts of non-ionic surfactant, 96.1-99.1 parts of deionized water. The preparation method of the fatty acid modified inorganic anti-adhesive filler is as follows: the silane coupling agent is added into the mixed solvent of ethanol and water for sufficient hydrolysis, then the inorganic anti-adhesive filler uniformly dispersed in n-butanol is added for reaction to obtain the inorganic anti-adhesive filler grafted with silane coupling agent; the inorganic anti-adhesive filler grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, uniformly dispersed and reacted to obtain the fatty acid modified inorganic anti-adhesive filler. The anti-adhesive has better stability and is beneficial to uniform adhesion on the surface of aramid fiber.

Description

TECHNICAL FIELD

[0001] The present application relates to an anti-adhesion agent for aramid fibers and a preparation method thereof, and belongs to the technical field of fiber anti-adhesion agents. BACKGROUND

[0002] Aramid fibers can be mainly divided into para-aramid fibers and meta-aramid fibers, and the full name is "polyphenylene terephthalamide", which is Aramid fiber in English. It is a new type of high-tech synthetic fiber with excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, light weight, etc. Its strength is 5-6 times that of steel wire, modulus is 2-3 times that of steel wire or glass fiber, and toughness is 2 times that of steel wire, and weight is only about 1 / 5 of steel wire. It does not decompose and melt at a temperature of 560℃. It has good insulation and anti-aging properties, and has a long service life. The discovery of aramid fiber is considered to be a very important historical process in the material field.

[0003] However, in order to obtain aramid fibers with high strength and high modulus and modified aramid fibers with more excellent performance, stretching needs to be carried out at high temperature, which causes the phenomenon of sticking and silk in the process of stretching of aramid fibers, which brings problems to the normal fiber production process and greatly affects the mechanical properties of the finished fiber, resulting in significant reduction of fiber strength, elongation and model indicators.

[0004] The fiber anti-adhesion agent is applied to the surface of the fiber, which can prevent the mutual adhesion between the fibers in the process of primary fiber preparation and subsequent hot drawing, and has an important influence on the processing of high-performance aramid fibers and the mechanical properties of finished fibers. Patent No. JP4782944B2 discloses an anti-adhesion agent prepared by dispersing talc, calcium carbonate, mica and other inorganic powders; patent application No. CN114232381A discloses an anti-adhesion agent for impregnation process prepared by mixing prepared silicone resin grafted talc, cactus ethanol solution, beeswax, emulsifier and pH adjuster; patent application No. US4525384A discloses an anti-adhesion agent for fibers by applying an aqueous dispersion containing inert inorganic materials (graphite, talc, silica, hydrophobic silica) on the surface of the fibers. The above dispersion has poor stability, and it is difficult to maintain the stability of the dispersion system during production, which causes uneven coating of the anti-adhesion agent on the surface of the fibers and affects the normal spinning of aramid fibers. SUMMARY

[0005] The present application provides an anti-adhesion agent for aramid fibers and a preparation method thereof, which has better stability, is beneficial to uniform adhesion on the surface of aramid fibers, and ensures smooth spinning of aramid fibers.

[0006] The technical scheme for solving the above technical problems is as follows: a kind of anti-adhesive for aramid fiber, according to weight fraction, the anti-adhesive includes: fatty acid modified inorganic anti-adhesive filler 0.75-3 parts, anionic surfactant 0.075-0.45 parts, non-ionic surfactant 0.075-0.45 parts, deionized water 96.1-99.1 parts;

[0007] The inorganic anti-adhesive filler is at least one of silica and talcum powder.

[0008] Based on the above technical scheme, the application can also be improved as follows:

[0009] Further, the preparation method of the fatty acid modified inorganic anti-adhesive filler is:

[0010] The silane coupling agent is added to the mixed solvent of ethanol and water for sufficient hydrolysis, then the inorganic anti-adhesive filler uniformly dispersed in n-butanol is added, the temperature is controlled for reaction, and then the inorganic anti-adhesive filler grafted with silane coupling agent is obtained through solid-liquid separation;

[0011] The inorganic anti-adhesive filler grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide and fatty acid are added to dichloromethane, uniformly dispersed and reacted, and finally the fatty acid modified inorganic anti-adhesive filler is obtained through solid-liquid separation and drying.

[0012] Further, the mass ratio of silane coupling agent, ethanol and water is 1:(9-10):(1-2);

[0013] The mass ratio of silane coupling agent and inorganic anti-adhesive filler is (5-10):(2-5);

[0014] The mass ratio of inorganic anti-adhesive filler and n-butanol is (2-5):(50-80);

[0015] The mass ratio of inorganic anti-adhesive filler grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide and fatty acid is 1:(1.0-1.2):(0.6-0.8).

[0016] Further, the fatty acid is C 14 -C 18 At least one of the fatty acids.

[0017] Further, the inorganic anti-adhesive filler is added to n-butanol for uniform dispersion by ultrasonic treatment, the ultrasonic treatment time is 5-15 min, the ultrasonic power is 120-160 W, and the ultrasonic frequency is 30-60 kHz;

[0018] The silane coupling agent grafted inorganic anti-adhesion filler, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonic treatment is carried out for 5-15 min, the ultrasonic power is 120-160 W, the ultrasonic frequency is 30-60 kHz, then the reaction is completed by stirring at the speed of 100-200 r / min for 24-48 h at room temperature.

[0019] Further, the reaction temperature for preparing the silane coupling agent grafted inorganic anti-adhesion filler is 80-90 DEG C, and the reaction time is 6-8 h.

[0020] Further, the mass ratio of the fatty acid modified inorganic anti-adhesion filler to the anionic surfactant is (5-10):1.

[0021] Further, the anionic surfactant is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium fatty alcohol polyoxyethylene ether sulfate and sodium di-sec-octyl maleate sulfonate.

[0022] Further, the non-ionic surfactant is at least one of fatty alcohol polyoxyethylene ether, BYK-190, Tween 80, nonyl phenol polyoxyethylene ether and fatty acid methyl ester ethoxylate.

[0023] The application further discloses a preparation method of the anti-adhesion agent for aramid fiber.

[0024] The fatty acid modified inorganic anti-adhesion filler, the anionic surfactant, the non-ionic surfactant and deionized water with a mass of 54%-75% of the formula components are uniformly mixed, and a dispersion liquid is obtained after grinding treatment; and the anti-adhesion agent is obtained by adding the remaining deionized water required by the formula components into the dispersion liquid according to the concentration requirement.

[0025] The application has the following beneficial effects:

[0026] The anti-adhesion agent for aramid fiber has better stability, the fatty acid modified inorganic anti-adhesion filler can effectively increase the spacing between the inorganic anti-adhesion filler particles in the anti-adhesion agent, the anionic surfactant can form a double electric layer structure on the surface of the nano particles, and the non-ionic surfactant can increase the steric hindrance between the particles, which is not conducive to the agglomeration and settlement between the particles.

[0027] The anti-adhesion agent can be uniformly attached to the surface of the aramid fiber, the modified silica particles can effectively cover the surface of the fiber and play a role in spacing the fibers, the phenomenon of sticking and clustering of the aramid fiber during the spinning process is avoided, and the smooth spinning of the aramid fiber is ensured. Attached Figure Description

[0028] Figure 1 Microscopic images of the anti-adhesive coating on the fiber surface in Example 5 (Application Example 5);

[0029] Figure 2 Microscopic images of the anti-adhesive coating on the fiber surface in Example 6 (Application Example 9);

[0030] Figure 3 Microscopic images of the anti-adhesive coating on the fiber surface in Example 7 (Application Example 13);

[0031] Figure 4 This is a microscopic image of the anti-adhesive coating on the fiber surface in Example 8 (Application Example 17). Detailed Implementation

[0032] The specific embodiments of the present invention will be described in detail below. The present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used is for describing particular embodiments only and is not intended to limit the invention.

[0034] An anti-sticking agent for aramid fibers, comprising, by weight: 0.75-3 parts of fatty acid-modified inorganic anti-sticking filler, 0.075-0.45 parts of anionic surfactant, 0.075-0.45 parts of nonionic surfactant, and 96.1-99.1 parts of deionized water;

[0035] The inorganic anti-sticking filler is at least one of silica and talc.

[0036] Specifically, the preparation method of the fatty acid modified inorganic anti-sticking filler is as follows:

[0037] The silane coupling agent is added to a mixed solvent of ethanol and water and stirred at 200 r / min for 15-30 min to ensure complete hydrolysis of the silane coupling agent. The inorganic anti-adhesion filler is added to n-butanol and ultrasonically dispersed. The two solutions are then mixed and reacted under controlled temperature. After the reaction is complete, the mixture is centrifuged at 8000-12000 r / min for 10-15 min. The precipitate is collected, washed, and dried to obtain the silane coupling agent-grafted inorganic anti-adhesion filler.

[0038] The silane coupling agent grafted inorganic release filler, N,N-dicyclohexyl carbodiimide (DCC) and fatty acid are added into dichloromethane, uniformly dispersed and reacted, and finally the fatty acid modified inorganic release filler is obtained through solid-liquid separation and drying.

[0039] Specifically, the mass ratio of the silane coupling agent, ethanol and water is 1:(9-10):(1-2).

[0040] The mass ratio of the silane coupling agent and the inorganic release filler is (5-10):(2-5).

[0041] The mass ratio of the inorganic release filler and n-butanol is (2-5):(50-80).

[0042] The mass ratio of the silane coupling agent grafted inorganic release filler, N,N-dicyclohexyl carbodiimide and fatty acid is 1:(1.0-1.2):(0.6-0.8).

[0043] The mass ratio of the silane coupling agent grafted inorganic release filler and dichloromethane is (2-5):(100-150).

[0044] More specifically, the silane coupling agent used in the embodiment of the present application is KH550.

[0045] The silicon dioxide used in the embodiment of the present application is purchased from Shanghai Maikelin Biochemical Technology Co., Ltd., and the CAS number is 60676-86-0; the talc used in the embodiment of the present application is purchased from Shanghai Maikelin Biochemical Technology Co., Ltd., and the CAS number is 14807-96-6.

[0046] Specifically, the fatty acid is C 14 -C 18 at least one of the fatty acids.

[0047] More specifically, the fatty acid is at least one of tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid and octadecanoic acid.

[0048] Specifically, the inorganic release filler is added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 5-15 min, the ultrasonic power is 120-160 W, and the ultrasonic frequency is 30-60 kHz.

[0049] The silane coupling agent grafted inorganic anti-adhesion filler, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonic treatment is carried out for 5-15 min, the ultrasonic power is 120-160 W, the ultrasonic frequency is 30-60 kHz, then the reaction is completed by stirring at a speed of 100-200 r / min for 24-48 h at room temperature. Centrifugation is carried out at a speed of 8000-12000 r / min for 10-15 min, the precipitate is washed and dried to obtain the silane coupling agent grafted inorganic anti-adhesion filler.

[0050] Specifically, the reaction temperature for preparing the silane coupling agent grafted inorganic anti-adhesion filler is 80-90 ℃, and the reaction time is 6-8 h.

[0051] Specifically, the mass ratio of the fatty acid modified inorganic anti-adhesion filler to the anionic surfactant is (5-10):1.

[0052] Specifically, the anionic surfactant is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium fatty alcohol polyoxyethylene ether sulfate and sodium di-sec-octyl maleate sulfonate.

[0053] Specifically, the non-ionic surfactant is at least one of fatty alcohol polyoxyethylene ether, BYK-190, Tween 80, nonyl phenol polyoxyethylene ether and fatty acid methyl ester ethoxylate.

[0054] The application further discloses a preparation method of the anti-adhesion agent for aramid fiber.

[0055] The fatty acid modified inorganic anti-adhesion filler, the anionic surfactant, the non-ionic surfactant and deionized water with a mass of 54%-75% of the formula components are mixed, and stirring is uniformly carried out at a speed of 100-200 r / min, a grinder is used to grind at 2000-2500 r / min for 4-6 h to obtain a long-term stable dispersion liquid, and the anti-adhesion agent is obtained by adding the remaining deionized water required by the formula components into the dispersion liquid according to the concentration requirement.

[0056] More specifically, the storage temperature of the dispersion liquid is greater than or equal to 15 ℃, so as to prevent the agglomeration of silica or talc particles and affect the use.

[0057] I. Preparation example of the anti-adhesion agent for aramid fiber

[0058] Example 1

[0059] Preparation of the anti-adhesion agent for aramid fiber

[0060] (1) Preparation of the fatty acid modified inorganic anti-adhesion filler:

[0061] The silane coupling agent is added into a mixed solvent of ethanol and water, and stirred at a rotation speed of 200 r / min for 30 min to make the silane coupling agent fully hydrolyzed; the inorganic anti-adhesive filler, i.e., silica, is added into n-butanol and uniformly dispersed by ultrasonic treatment; the above two solutions are mixed, and then reacted at a controlled temperature, and then subjected to solid-liquid separation to obtain the silica grafted with the silane coupling agent;

[0062] The silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and tetradecanoic acid (CAS: 544-63-8) are added into dichloromethane, uniformly dispersed by ultrasonic treatment and reacted, and finally subjected to centrifugation, washing and drying to obtain the tetradecanoic acid modified silica.

[0063] The mass ratio of the silane coupling agent, ethanol and water is 1:10:1.

[0064] The mass ratio of the silane coupling agent and silica is 5:2.

[0065] The mass ratio of silica and n-butanol is 2:50.

[0066] The mass ratio of the silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and tetradecanoic acid is 1:1:0.6.

[0067] The mass ratio of the silica grafted with the silane coupling agent and dichloromethane is 2:100.

[0068] The silica is added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 15 min, the ultrasonic power is 120 W, and the ultrasonic frequency is 30 kHz.

[0069] The silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonically treated for 15 min at an ultrasonic power of 120 W and an ultrasonic frequency of 30 kHz, and then stirred at a speed of 200 r / min for 24 h at room temperature to complete the reaction.

[0070] (2) Preparation of the anti-adhesive agent:

[0071] According to the weight parts, the formula of the anti-adhesive agent comprises 3 parts of tetradecanoic acid modified silica, 0.45 parts of anionic surfactant, 0.45 parts of non-ionic surfactant and 96.1 parts of deionized water.

[0072] The anionic surfactant is sodium dodecyl benzene sulfonate, and the non-ionic surfactant is fatty acid methyl ester ethoxylate.

[0073] The preparation method of the anti-adhesive agent is: mixing the myristic acid modified silicon dioxide, anionic surfactant, non-ionic surfactant, and 75% of the deionized water of the formula ingredient, stirring uniformly at a speed of 200 r / min, using a grinder to grind at 2500 r / min for 5 h to obtain a long-term stable dispersion liquid, and adding 25% of the deionized water of the formula ingredient into the dispersion liquid to obtain the anti-adhesive agent.

[0074] Example 2

[0075] Preparation of an anti-adhesive agent for aramid fiber:

[0076] (1) Preparation of a fatty acid modified inorganic anti-adhesive filler:

[0077] The silane coupling agent is added to a mixed solvent of ethanol and water, and stirred at a speed of 200 r / min for 30 min to fully hydrolyze the silane coupling agent; the inorganic anti-adhesive filler silicon dioxide is added to n-butanol and uniformly dispersed by ultrasonic treatment; after mixing the above two solutions, the temperature is controlled for reaction, and then solid-liquid separation is performed to obtain silicon dioxide grafted with silane coupling agent;

[0078] The silicon dioxide grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide, and pentadecanoic acid (CAS: 1002-84-2) are added to dichloromethane, ultrasonically dispersed and reacted, and finally centrifuged, washed, and dried to obtain pentadecanoic acid modified silicon dioxide.

[0079] The mass ratio of the silane coupling agent, ethanol, and water is 1:10:1;

[0080] The mass ratio of the silane coupling agent and silicon dioxide is 5:2;

[0081] The mass ratio of the silicon dioxide and n-butanol is 2:50;

[0082] The mass ratio of the silicon dioxide grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide, and pentadecanoic acid is 1:1:0.6;

[0083] The mass ratio of the silicon dioxide grafted with silane coupling agent and dichloromethane is 2:100.

[0084] The silicon dioxide is added to n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 15 min, the ultrasonic power is 120 W, and the ultrasonic frequency is 30 kHz;

[0085] The silicon dioxide grafted with silane coupling agent, N,N-dicyclohexyl carbodiimide, and fatty acid are added to dichloromethane, ultrasonically treated for 15 min at an ultrasonic power of 120 W and an ultrasonic frequency of 30 kHz, and then stirred at a speed of 200 r / min for 24 h at room temperature to complete the reaction.

[0086] (2) Preparation of the anti-sticking agent:

[0087] The anti-sticking agent is prepared by mixing pentadecanoic acid modified silica, anionic surfactant, non-ionic surfactant, and 75% of the deionized water in the formula, stirring uniformly at a speed of 200 r / min, and grinding for 5 h at a speed of 2500 r / min using a grinder to obtain a long-term stable dispersion liquid. When in use, 25% of the deionized water in the formula is added to the dispersion liquid to obtain the anti-sticking agent.

[0088] The anionic surfactant is sodium dodecyl sulfate, and the non-ionic surfactant is fatty alcohol polyoxyethylene ether.

[0089] The preparation method of the anti-sticking agent is as follows: mixing pentadecanoic acid modified silica, anionic surfactant, non-ionic surfactant, and 75% of the deionized water in the formula, stirring uniformly at a speed of 200 r / min, and grinding for 5 h at a speed of 2500 r / min using a grinder to obtain a long-term stable dispersion liquid. When in use, 25% of the deionized water in the formula is added to the dispersion liquid to obtain the anti-sticking agent.

[0090] Example 3

[0091] Preparation of an anti-sticking agent for aramid fibers:

[0092] (1) Preparation of a fatty acid modified inorganic anti-sticking filler:

[0093] The silane coupling agent is added to a mixed solvent of ethanol and water, and stirred at a speed of 200 r / min for 30 min to allow the silane coupling agent to be fully hydrolyzed. The inorganic anti-sticking filler, silica, is added to n-butanol and ultrasonically dispersed uniformly. After mixing the two solutions, the temperature is controlled for reaction, and then solid-liquid separation is performed to obtain silica grafted with the silane coupling agent.

[0094] The silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide, and hexadecanoic acid (CAS: 57-10-3) are added to dichloromethane, ultrasonically dispersed uniformly, and reacted. Finally, centrifugation is performed, the precipitate is washed and dried to obtain hexadecanoic acid modified silica.

[0095] The mass ratio of the silane coupling agent, ethanol, and water is 1:10:1.

[0096] The mass ratio of the silane coupling agent and silica is 5:2.

[0097] The mass ratio of the silica and n-butanol is 2:50.

[0098] The mass ratio of the silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide, and hexadecanoic acid is 1:1:0.6.

[0099] The mass ratio of the silane coupling agent grafted silica and dichloromethane is 2:100.

[0100] The silica is added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 15 min, the ultrasonic power is 120 W, and the ultrasonic frequency is 30 kHz;

[0101] The silane coupling agent grafted silica, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonic treatment is performed for 15 min, the ultrasonic power is 120 W, the ultrasonic frequency is 30 kHz, then the reaction is completed by stirring at a speed of 200 r / min at room temperature for 24 h.

[0102] (2) Preparation of the anti-adhesive agent:

[0103] According to the weight fraction, the formula of the anti-adhesive agent comprises 3 parts of hexadecanoic acid modified silica, 0.45 parts of anionic surfactant, 0.45 parts of non-ionic surfactant and 96.1 parts of deionized water.

[0104] The anionic surfactant is sodium fatty alcohol polyoxyethylene ether sulfate, and the non-ionic surfactant is BYK-190.

[0105] The preparation method of the anti-adhesive agent is as follows: the hexadecanoic acid modified silica, the anionic surfactant, the non-ionic surfactant and 75% of the deionized water of the formula component are mixed, uniformly stirred at a speed of 200 r / min, and ground by a grinder at a speed of 2500 r / min for 5 h to obtain a long-term stable dispersion liquid. When used, 25% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-adhesive agent.

[0106] Example 4

[0107] Preparation of an anti-adhesive agent for aramid fiber:

[0108] (1) Preparation of a fatty acid modified inorganic anti-adhesive filler:

[0109] The silane coupling agent is added into a mixed solvent of ethanol and water, and stirred at a speed of 200 r / min for 30 min to hydrolyze the silane coupling agent sufficiently; the inorganic anti-adhesive filler silica is added into n-butanol and uniformly dispersed by ultrasonic treatment; after the above two solutions are mixed, the reaction is performed by controlling the temperature, and then the silane coupling agent grafted silica is obtained by solid-liquid separation.

[0110] The silane coupling agent grafted silica, N,N-dicyclohexyl carbodiimide and heptadecanoic acid (CAS: 506-12-7) are added into dichloromethane, uniformly dispersed by ultrasonic treatment and reacted, and finally the heptadecanoic acid modified silica is obtained by centrifugation, precipitation, washing and drying.

[0111] wherein the mass ratio of silane coupling agent, ethanol and water is 1:10:1;

[0112] the mass ratio of silane coupling agent and silicon dioxide is 5:2;

[0113] the mass ratio of silicon dioxide and n-butanol is 2:50;

[0114] the mass ratio of silane coupling agent grafted silicon dioxide, N,N-dicyclohexyl carbodiimide and heptadecanoic acid is 1:1:0.6;

[0115] the mass ratio of silane coupling agent grafted silicon dioxide and dichloromethane is 2:100.

[0116] The silicon dioxide is added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 15 min, the ultrasonic power is 120 W, and the ultrasonic frequency is 30 kHz;

[0117] The silane coupling agent grafted silicon dioxide, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonic treatment is performed for 15 min, the ultrasonic power is 120 W, the ultrasonic frequency is 30 kHz, then stirring is performed at room temperature at a speed of 200 r / min for 24 h to complete the reaction.

[0118] (2) Preparation of the anti-adhesive agent:

[0119] According to the weight fraction, the formula of the anti-adhesive agent comprises 3 parts of heptadecanoic acid modified silicon dioxide, 0.45 parts of anionic surfactant, 0.45 parts of non-ionic surfactant and 96.1 parts of deionized water.

[0120] The anionic surfactant is sodium di-sec-octyl maleate sulfonate, and the non-ionic surfactant is nonylphenol polyoxyethylene ether.

[0121] The preparation method of the anti-adhesive agent is as follows: the heptadecanoic acid modified silicon dioxide, the anionic surfactant, the non-ionic surfactant and 75% of the deionized water of the formula component are mixed, uniformly stirred at a speed of 200 r / min, and ground by a grinder at 2500 r / min for 5 h to obtain a long-term stable dispersion liquid. When used, 25% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-adhesive agent.

[0122] Example 5

[0123] Preparation of an anti-adhesive agent for aramid fiber:

[0124] (1) Preparation of a fatty acid modified inorganic anti-adhesive filler:

[0125] The silane coupling agent is added into a mixed solvent of ethanol and water, and stirred at a rotation speed of 200 r / min for 30 min to make the silane coupling agent fully hydrolyzed; the inorganic anti-adhesive filler, i.e., silica, is added into n-butanol and uniformly dispersed by ultrasonic treatment; the above two solutions are mixed, and then reacted at a controlled temperature, and then subjected to solid-liquid separation to obtain the silica grafted with the silane coupling agent;

[0126] The silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and octadecanoic acid (CAS: 57-11-4) are added into dichloromethane, uniformly dispersed by ultrasonic treatment and reacted, and finally subjected to centrifugation, washing and drying to obtain the octadecanoic acid modified silica.

[0127] The mass ratio of the silane coupling agent, ethanol and water is 1:10:1.

[0128] The mass ratio of the silane coupling agent and the silica is 5:2.

[0129] The mass ratio of the silica and n-butanol is 2:50.

[0130] The mass ratio of the silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and octadecanoic acid is 1:1:0.6.

[0131] The mass ratio of the silica grafted with the silane coupling agent and dichloromethane is 2:100.

[0132] The silica is added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time is 15 min, the ultrasonic power is 120 W, and the ultrasonic frequency is 30 kHz.

[0133] The silica grafted with the silane coupling agent, N,N-dicyclohexyl carbodiimide and the fatty acid are added into dichloromethane, ultrasonically treated for 15 min at an ultrasonic power of 120 W and an ultrasonic frequency of 30 kHz, and then stirred at a speed of 200 r / min for 24 h at room temperature to complete the reaction.

[0134] (2) Preparation of the anti-adhesive agent:

[0135] According to the weight parts, the formula of the anti-adhesive agent comprises 3 parts of the octadecanoic acid modified silica, 0.45 parts of an anionic surfactant, 0.45 parts of a non-ionic surfactant and 96.1 parts of deionized water.

[0136] The anionic surfactant is sodium dodecyl benzene sulfonate, and the non-ionic surfactant is fatty acid methyl ester ethoxylate.

[0137] The preparation method of the anti-sticking agent is: mixing octadecanoic acid modified silicon dioxide, anionic surfactant, non-ionic surfactant, and 75% of the deionized water of the formula component, stirring uniformly at a speed of 200 r / min, and grinding for 5 h at 2500 r / min using a grinder to obtain a long-term stable dispersion liquid. When in use, 25% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-sticking agent.

[0138] Example 6

[0139] Preparation of an anti-sticking agent for aramid fiber

[0140] (1) Preparation of a fatty acid modified inorganic anti-sticking filler:

[0141] The same as example 5.

[0142] (2) Preparation of the anti-sticking agent:

[0143] According to the weight fraction, the formula composition of the anti-sticking agent is: 2.5 parts of octadecanoic acid modified silicon dioxide, 0.37 parts of anionic surfactant, 0.37 parts of non-ionic surfactant, and 96.76 parts of deionized water.

[0144] The anionic surfactant is sodium dodecyl benzene sulfonate, and the non-ionic surfactant is fatty acid methyl ester ethoxylate.

[0145] The preparation method of the anti-sticking agent is: mixing the fatty acid modified inorganic anti-sticking filler, anionic surfactant, non-ionic surfactant, and 65% of the deionized water of the formula component, stirring uniformly at a speed of 200 r / min, and grinding for 5 h at 2500 r / min using a grinder to obtain a long-term stable dispersion liquid. When in use, 35% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-sticking agent.

[0146] Example 7

[0147] Preparation of an anti-sticking agent for aramid fiber

[0148] (1) Preparation of a fatty acid modified inorganic anti-sticking filler:

[0149] The same as example 5.

[0150] (2) Preparation of the anti-sticking agent:

[0151] According to the weight fraction, the formula composition of the anti-sticking agent is: 1.0 part of octadecanoic acid modified silicon dioxide, 0.15 part of anionic surfactant, 0.15 part of non-ionic surfactant, and 98.7 parts of deionized water.

[0152] The anionic surfactant is sodium dodecyl benzene sulfonate, and the nonionic surfactant is fatty acid methyl ester ethoxylate.

[0153] The preparation method of the anti-adhesive agent is as follows: the fatty acid modified inorganic anti-adhesive filler, the anionic surfactant, the nonionic surfactant and 70% of the deionized water of the formula component are mixed, uniformly stirred at a speed of 200 r / min, and grinded by a grinder at a speed of 2500 r / min for 5 h to obtain a long-term stable dispersion liquid; when used, 30% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-adhesive agent.

[0154] Example 8

[0155] Preparation of an anti-adhesive agent for aramid fiber:

[0156] (1) Preparation of a fatty acid modified inorganic anti-adhesive filler:

[0157] The same as example 5.

[0158] (2) Preparation of an anti-adhesive agent:

[0159] According to weight parts, the formula composition of the anti-adhesive agent is as follows: 0.75 parts of octadecanoic acid modified silicon dioxide, 0.075 parts of anionic surfactant, 0.075 parts of nonionic surfactant and 99.1 parts of deionized water.

[0160] The anionic surfactant is sodium dodecyl benzene sulfonate, and the nonionic surfactant is fatty acid methyl ester ethoxylate.

[0161] The preparation method of the anti-adhesive agent is as follows: the fatty acid modified inorganic anti-adhesive filler, the anionic surfactant, the nonionic surfactant and 54% of the deionized water of the formula component are mixed, uniformly stirred at a speed of 200 r / min, and grinded by a grinder at a speed of 2500 r / min for 5 h to obtain a long-term stable dispersion liquid; when used, 46% of the deionized water of the formula component is added into the dispersion liquid to obtain the anti-adhesive agent.

[0162] Example 9

[0163] Preparation of an anti-adhesive agent for aramid fiber:

[0164] (1) Preparation of a fatty acid modified inorganic anti-adhesive filler:

[0165] The silane coupling agent is added into a mixed solvent of ethanol and water, stirred at a speed of 200 r / min for 30 min to make the silane coupling agent fully hydrolyzed; the inorganic anti-adhesive filler talc powder is added into n-butanol and ultrasonically treated to be uniformly dispersed; after the above two solutions are mixed, the temperature is controlled to react, and then the silane coupling agent grafted talc powder is obtained through solid-liquid separation.

[0166] The silane coupling agent grafted talc powder, N,N-dicyclohexyl carbodiimide, octadecanoic acid were added into dichloromethane, uniformly dispersed by ultrasonic treatment and reacted, and finally centrifuged, washed and dried to obtain the octadecanoic acid modified talc powder.

[0167] The mass ratio of the silane coupling agent, ethanol and water is 1:9:2;

[0168] The mass ratio of the silane coupling agent and the talc powder is 10:5;

[0169] The mass ratio of the talc powder and n-butanol is 5:80;

[0170] The mass ratio of the silane coupling agent grafted talc powder, N,N-dicyclohexyl carbodiimide and octadecanoic acid is 1:1.2:0.8;

[0171] The mass ratio of the silane coupling agent grafted talc powder and dichloromethane is 5:150.

[0172] The talc powder was added into n-butanol and uniformly dispersed by ultrasonic treatment, the ultrasonic treatment time was 5 min, the ultrasonic power was 160 W, and the ultrasonic frequency was 60 kHz;

[0173] The silane coupling agent grafted talc powder, N,N-dicyclohexyl carbodiimide and fatty acid were added into dichloromethane, ultrasonic treatment was performed for 5 min, the ultrasonic power was 160 W, the ultrasonic frequency was 60 kHz, and then the reaction was completed by stirring at a speed of 100 r / min for 48 h at room temperature.

[0174] (2) Preparation of the anti-adhesion agent:

[0175] According to the weight fraction, the formula of the anti-adhesion agent comprises 3 parts of the octadecanoic acid modified talc powder, 0.45 parts of anionic surfactant, 0.45 parts of non-ionic surfactant and 96.1 parts of deionized water.

[0176] The anionic surfactant is sodium dodecyl benzene sulfonate, and the non-ionic surfactant is fatty acid methyl ester ethoxylate.

[0177] The preparation method of the anti-adhesion agent is as follows: the octadecanoic acid modified talc powder, the anionic surfactant, the non-ionic surfactant and 75% of the deionized water of the formula component were mixed, uniformly stirred at a speed of 200 r / min, and ground by a grinder at a speed of 2500 r / min for 5 h to obtain a long-term stable dispersion liquid. When used, 25% of the deionized water of the formula component was added into the dispersion liquid to obtain the anti-adhesion agent.

[0178] Comparative Example 1

[0179] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 1, the silica was used directly to prepare the release agent without fatty acid modification.

[0180] Comparative Example 2

[0181] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 2, the proportion of octadecanoic acid-modified silica was increased.

[0182] The formulation of the release agent in this Comparative Example 2 was octadecanoic acid-modified silica 5 parts, anionic surfactant 0.45 parts, nonionic surfactant 0.45 parts, and deionized water 94.1 parts, by weight.

[0183] Comparative Example 3

[0184] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 3, the mass ratio of octadecanoic acid-modified silica to anionic surfactant was 15:1 (not within the range defined in the present application, i.e., the proportion of anionic surfactant was relatively small).

[0185] The formulation of the release agent in this Comparative Example 2 was octadecanoic acid-modified silica 5 parts, anionic surfactant 0.45 parts, nonionic surfactant 0.45 parts, and deionized water 94.1 parts, by weight.

[0186] Comparative Example 4

[0187] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 4, the amount of nonionic surfactant was reduced.

[0188] The formulation of the release agent in this Comparative Example 2 was octadecanoic acid-modified silica 5 parts, anionic surfactant 0.45 parts, nonionic surfactant 0.45 parts, and deionized water 94.1 parts, by weight.

[0189] Comparative Example 5

[0190] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 5, the amount of nonionic surfactant was increased.

[0191] The formulation of the release agent in this Comparative Example 2 was octadecanoic acid-modified silica 5 parts, anionic surfactant 0.45 parts, nonionic surfactant 0.45 parts, and deionized water 94.1 parts, by weight.

[0192] Comparative Example 6

[0193] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 6, the mass ratio of silane coupling agent, ethanol and water was 1:10:0.5 (i.e. the amount of water added was reduced) when preparing the silane coupling agent grafted silica.

[0194] Comparative Example 7

[0195] The same method as in Example 5 was used to prepare the release agent, except that in this Comparative Example 7, the mass ratio of silane coupling agent, ethanol and water was 1:10:3 (i.e. the amount of water added was increased) when preparing the silane coupling agent grafted silica.

[0196] Comparative Example 8

[0197] The same method as in Example 8 was used to prepare the release agent, except that in this Comparative Example 8, the reaction temperature was 60°C (lower than the temperature defined in the present application) when preparing the silane coupling agent grafted inorganic release filler.

[0198] II. Performance testing

[0199] 1. Surface contact angle testing:

[0200] The different fatty acid modified silica was spread on a glass slide, water was dropped on the glass slide, and the contact angle of water on the surface of the film was measured using a contact angle meter. The testing conditions were that the static contact angle of water on the surface of the sample was tested three times in succession, and the average value of the three points was used. The test results are shown in Table 1.

[0201] Table 1 Surface contact angle test results

[0202]

[0203] From the above Table 1 data, it can be seen that as the carbon number of the fatty acid increases, the contact angle between water and the modified silica increases gradually, indicating that the greater the carbon number of the fatty acid, the better the hydrophobicity of the modified silica.

[0204] The silica particles have a large specific surface area, contain hydroxyl groups on the surface, have good physicochemical properties, and have little environmental pollution. Since unmodified silica has good hydrophilicity and is easily aggregated and settled in water, it is difficult to maintain stability for a long time, so the fatty acid is used to modify it in the present application to reduce its use difficulty. In addition, talc has excellent physical and chemical properties such as lubricity, fire resistance, acid resistance, insulation, high melting point, chemical inertness, good hiding power, softness, good gloss, strong adsorption, etc. Since the crystal structure of talc is lamellar, it has a tendency to split into scales and special lubricity.

[0205] 2. Stability testing:

[0206] The anti-sticking agent prepared in the above examples and comparative examples was placed in a 15 mL glass bottle, and the time for the anti-sticking agent to be layered was observed at a temperature of 25°C, a humidity of 40%, and a pressure of 1.013 MPa. In Table 2, "none" means that no obvious layering phenomenon was observed, and "layering" means that an obvious layering phenomenon was observed (in Table 2, d represents "day"; / means that no subsequent experiment was performed after the layering phenomenon occurred).

[0207] Table 2: Stability test results

[0208]

[0209] As can be seen from the data in Table 2 above, the anti-sticking agent prepared in Examples 1-9 using the preparation method described in the present application has good stability. In the anti-sticking agent described in the present application, the fatty acid-modified inorganic anti-sticking filler is used, the fatty acid introduces a long carbon chain to the surface of the inorganic anti-sticking filler, increasing the distance between particles and particles. The addition of anionic surfactant forms a double-layer structure on the surface of the nanoparticles, and the non-ionic surfactant increases the steric hindrance between particles, which is not conducive to the agglomeration and sedimentation between particles, thereby enhancing the stability of the dispersion liquid. In addition, the increase in solid content can effectively increase the viscosity of the dispersion liquid, enhancing the uniformity and stability of the dispersion liquid. In summary, the anti-sticking agent described in the present application can maintain stability for a long time.

[0210] As can be seen from the comparison of the results of Comparative Example 1 and Example 5, if the silica that has not been modified by fatty acid is used, the stability of the anti-sticking agent is greatly reduced.

[0211] As can be seen from the comparison of the results of Comparative Example 2 and Example 5, if the amount of fatty acid-modified silica is too much, the stability of the anti-sticking agent decreases, because the increase in the amount of modified silica leads to an increase in the probability and frequency of collisions between particles, which more easily leads to agglomeration between particles.

[0212] As can be seen from the comparison of the results of Comparative Example 3 and Example 5, if the proportion of anionic surfactant in the mass ratio of octadecanoic acid-modified silica and anionic surfactant is relatively small, the stability of the anti-sticking agent decreases, because the addition of anionic surfactant forms a double-layer structure on the surface of the nanoparticles (fatty acid-modified inorganic anti-sticking filler), thereby avoiding the problem of sedimentation of the fatty acid-modified inorganic anti-sticking filler. If the proportion of anionic surfactant is too small, it will affect the stability of the anti-sticking agent.

[0213] From the comparison of the results of Comparative Example 4 and Example 5, it can be seen that if the amount of nonionic surfactant is reduced, the stability of the anti-sticking agent is reduced, because the nonionic surfactant is beneficial to increase the steric hindrance between particles and is not conducive to the agglomeration and sedimentation between particles, thereby enhancing the stability of the anti-sticking agent.

[0214] From the comparison of the results of Comparative Example 5 and Example 5, it can be seen that if the amount of nonionic surfactant is increased, the stability of the anti-sticking agent is not significantly affected, but when the anti-sticking agent is applied in fibers, smoke will occur during the hot stretching process of the fibers, causing environmental pollution, affecting the performance of the fibers, and increasing the use cost.

[0215] From the comparison of the results of Comparative Example 6 and Example 5, it can be seen that if the amount of water is reduced when preparing the silane coupling agent grafted silica, the hydrolysis of the silane coupling agent is not complete, which reduces the grafting amount of the silane coupling agent on the surface of the silica, thereby reducing the stability of the anti-sticking agent and causing easy sedimentation.

[0216] From the comparison of the results of Comparative Example 7 and Example 5, it can be seen that if the amount of water is increased when preparing the silane coupling agent grafted silica, the water and n-butanol will be separated during the subsequent modification process of the silica, which causes the silica to not be in sufficient contact with the silane coupling agent, and the reaction cannot be carried out sufficiently.

[0217] From the comparison of the results of Comparative Example 8 and Example 5, it can be seen that if the reaction temperature is reduced when preparing the silane coupling agent grafted silica, the stability of the anti-sticking agent is reduced, because the lower temperature causes the reaction of the silane coupling agent with the hydroxyl groups on the surface of the silica to be incomplete, thereby reducing the surface grafting rate.

[0218] 3. Fiber coating application effect test:

[0219] The application effect of the anti-sticking agent is tested by the post-stretching experiment of the fiber. The fiber used is para-aramid fiber or modified para-aramid fiber. The structure of the aramid fiber includes at least one of the following two structures, but is not limited to the following two structures:

[0220] .

[0221] The fiber coating application effect test of the present application uses para-aramid fiber.

[0222] The degree of adhesion (f) can be used to judge the silk adhesion and silk situation of the fiber after post-stretching. Specifically, the degree of adhesion (f) can be calculated according to the following formula:

[0223] f = N / n;

[0224] N: total number of filaments in the bundle; n: number of filaments that can be separated after heat stretching. The greater the value of f, the more serious the sticking and bundling after heat stretching.

[0225] Blank Example 1

[0226] A method for preparing a finished yarn, comprising the following steps: the number of orifices of the spinneret is 100, i.e. the number of bundle roots is 100, the surface of the nascent yarn is not coated with an anti-sticking agent, and after water washing and drying, the yarn is stretched by 8 times at 400°C.

[0227] Blank Example 2

[0228] A method for preparing a finished yarn, comprising the following steps: the number of orifices of the spinneret is 100, i.e. the number of bundle roots is 100, the surface of the nascent yarn is not coated with an anti-sticking agent, and after water washing and drying, the yarn is stretched by 10 times at 450°C.

[0229] Blank Example 3

[0230] A method for preparing a finished yarn, comprising the following steps: the number of orifices of the spinneret is 200, i.e. the number of bundle roots is 200, the surface of the nascent yarn is not coated with an anti-sticking agent, and after water washing and drying, the yarn is stretched by 8 times at 400°C.

[0231] Blank Example 4

[0232] A method for preparing a finished yarn, comprising the following steps: the number of orifices of the spinneret is 200, i.e. the number of bundle roots is 200, the surface of the nascent yarn is not coated with an anti-sticking agent, and after water washing and drying, the yarn is stretched by 10 times at 450°C.

[0233] Application Examples 1-4

[0234] Finished yarns are prepared by the methods of Blank Example 1-4 in turn respectively, except that in each application example, the surface of the nascent yarn is coated with the anti-sticking agent prepared in Embodiment 1 above.

[0235] Application Examples 5-8

[0236] Finished yarns are prepared by the methods of Blank Example 1-4 in turn respectively, except that in each application example, the surface of the nascent yarn is coated with the anti-sticking agent prepared in Embodiment 5 above.

[0237] Application Examples 9-12

[0238] Finished yarns are prepared by the methods of Blank Example 1-4 in turn respectively, except that in each application example, the surface of the nascent yarn is coated with the anti-sticking agent prepared in Embodiment 6 above.

[0239] Application Examples 13-16

[0240] The finished yarns were prepared by using the methods of blank example 1 to blank example 4 in turn respectively, except that the surface of the nascent yarn was coated with the anti-sticking agent prepared in the above embodiment 7 in each application example.

[0241] Application examples 17 to 20

[0242] The finished yarns were prepared by using the methods of blank example 1 to blank example 4 in turn respectively, except that the surface of the nascent yarn was coated with the anti-sticking agent prepared in the above embodiment 8 in each application example.

[0243] Application examples 21 to 24

[0244] The finished yarns were prepared by using the methods of blank example 1 to blank example 4 in turn respectively, except that the surface of the nascent yarn was coated with the anti-sticking agent prepared in the above embodiment 9 in each application example.

[0245] The fiber conditions in the above application blank examples and application examples are as shown in Table 3.

[0246] Table 3: Test results of fiber coating application effect

[0247]

[0248] As can be seen from the above table data: the anti-sticking agent described in the application coated on the fiber can effectively reduce the problem of sticking yarn, and reduce the problem of broken yarn, which is conducive to the smooth spinning of aramid fiber.

[0249] In the process of fiber stretching and drying, the fibers coated with four different mass fractions of modified silica anti-sticking agent did not appear the phenomenon of sticking and yarning, and the fiber coated with 10% of the modified silica anti-sticking agent had the best effect. Figures 1-4 It can be seen that: the modified silica particles can effectively and uniformly cover the surface of the fiber, and play the role of spacing the fibers.

[0250] The technical features of the above described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above described embodiments are not enumerated, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0251] For those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application, and the protection scope of the present application is subject to the appended claims.

Claims

1. An anti-tack agent for aramid fibers, characterized by, The anti-sticking agent comprises, in parts by weight, 0.75-3 parts of a fatty acid modified inorganic anti-sticking filler, 0.075-0.45 parts of an anionic surfactant, 0.075-0.45 parts of a non-ionic surfactant, and 96.1-99.1 parts of deionized water; The inorganic anti-sticking filler is at least one of silica and talcum powder; The preparation method of the fatty acid modified inorganic anti-sticking filler is: The silane coupling agent is added into a mixed solvent of ethanol and water for sufficient hydrolysis, and then the inorganic anti-sticking filler uniformly dispersed in n-butanol is added, and the reaction is carried out by controlling the temperature, and then the silane coupling agent grafted inorganic anti-sticking filler is obtained through solid-liquid separation; The silane coupling agent grafted inorganic anti-sticking filler, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, uniformly dispersed and reacted, and then the fatty acid modified inorganic anti-sticking filler is obtained through solid-liquid separation and drying. The mass ratio of the silane coupling agent, ethanol and water is 1:(9-10):(1-2). The reaction temperature for preparing the silane coupling agent grafted inorganic anti-sticking filler is 80-90°C. The mass ratio of the fatty acid modified inorganic anti-sticking filler and the anionic surfactant is (5-10):

1.

2. The anti-tack agent for aramid fibers according to claim 1, characterized by, The mass ratio of the silane coupling agent and the inorganic anti-sticking filler is (5-10):(2-5). The mass ratio of the inorganic anti-sticking filler and n-butanol is (2-5):(50-80). The mass ratio of the silane coupling agent grafted inorganic anti-sticking filler, N,N-dicyclohexyl carbodiimide and fatty acid is 1:(1.0-1.2):(0.6-0.8).

3. The anti-tack agent for aramid fibers according to claim 1, characterized by, The fatty acid is C 14 -C 18 at least one of the fatty acids.

4. The anti-tack agent for aramid fibers according to claim 1, characterized by, The inorganic anti-sticking filler is added into n-butanol for uniform dispersion by ultrasonic treatment, the ultrasonic treatment time is 5-15 min, the ultrasonic power is 120-160 W, and the ultrasonic frequency is 30-60 kHz.

5. The anti-tack agent for aramid fibers according to claim 1, characterized by, The reaction time for preparing the silane coupling agent grafted inorganic anti-sticking filler is 6-8 h. The silane coupling agent grafted inorganic anti-sticking filler, N,N-dicyclohexyl carbodiimide and fatty acid are added into dichloromethane, ultrasonic treatment is carried out for 5-15 min, the ultrasonic power is 120-160 W, the ultrasonic frequency is 30-60 kHz, and then the reaction is completed by stirring at a speed of 100-200 r / min for 24-48 h at room temperature.

6. The anti-tack agent for aramid fibers according to claim 1, characterized by, The anionic surfactant is at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium fatty alcohol polyoxyethylene ether sulfate, and sodium di-sec-octyl sulfonate.

7. The anti-tack agent for aramid fibers according to claim 1, characterized by, The non-ionic surfactant is at least one of fatty alcohol polyoxyethylene ether, BYK-190, Tween 80, nonylphenol polyoxyethylene ether, and fatty acid methyl ester ethoxylate.

8. A process for the preparation of the anti-tack agent for aramid fibers according to any one of claims 1 to 7, characterized by, The preparation method is: The fatty acid modified inorganic anti-sticking filler, the anionic surfactant, the non-ionic surfactant, and deionized water with a mass of 54%-75% of the formula ingredients are uniformly mixed, and then ground to obtain a dispersion liquid, and the remaining deionized water required by the formula ingredients is added to the dispersion liquid according to the concentration requirement to obtain the anti-sticking agent.

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