KR100962268B1 - Electric conductivity electric conductivity cus nano corpuscular composition and electric conductivity acryl fiber manufacturing method - Google Patents

Abstract

The present invention relates to a conductive copper sulfide nanoparticle composition and a method for producing a conductive acrylic fiber using the same,

The use amount of reducing agent is small, and the practical precipitation reaction of copper sulfide on acrylic fiber maintains the rate of low temperature reaction below 55 ℃, and it is excellent in liquid stability that does not cause particle growth even during storage and precipitation reaction. Conductive copper sulfide nanoparticle composition, characterized in that the diameter is 20nm or less,

Providing a conductive acrylic fiber manufacturing method for producing a conductive acrylic fiber having excellent volume resistance by depositing the conductive copper sulfide nanoparticle composition to an acrylic fiber having an acrylonitrile repeating unit, and as a result, chemical resistance due to wear resistance or constant use The purpose is to produce high quality conductive acrylic fibers without problems in durability and conductive performance such as deterioration of physical properties due to change (oxidation), so that they can be widely used not only for clothing but also for industrial use.

The conductive copper sulfide nanoparticle composition of the present invention for achieving the above object is a copper salt having a content of 1 to 30% by weight with respect to 100% by weight of the acrylic fiber coating object in the conductive composition for producing a conductive acrylic fiber, 0.05 Phenyl compound-based reducing agent of -5% by weight, low molecular weight sulfur compound of 0.05-1.5% by weight, water-soluble amines of 0.1-10% by weight, thio compound of 0.1-10% by weight, thio stabilizer of 0.01-10% by weight, 2 It is characterized by including a pH adjuster of ~ 5% by weight.

On the other hand, the method for producing a conductive acrylic fiber of the present invention is immersed acrylic fiber having an acrylonitrile repeating unit in the conductive copper sulfide nanoparticle composition and then reacted for 0.5 to 5 hours at a temperature of 50 ℃ to 55 ℃ acrylic fiber It is characterized by coordinating the above composition to.

Description

Conductive copper sulfide nano fine particles composition and manufacturing method of conductive acrylic fiber using same {Electric conductivity Electric conductivity CuS nano corpuscular composition and electric conductivity acryl fiber manufacturing method}

The present invention relates to a conductive copper sulfide nanoparticle composition and a method for producing a conductive acrylic fiber using the same,

More specifically, the amount of reducing agent used is small, and the practical precipitation reaction of copper sulfide on acrylic fiber maintains a low temperature reaction rate of less than 55 ° C., while it is excellent in liquid stability in which particle growth does not occur during storage and precipitation reaction. The electroconductive copper sulfide nanoparticle composition characterized by the average particle diameter of microparticles | fine-particles being 20 nm or less,

The present invention relates to a method for producing a conductive acrylic fiber for producing a conductive acrylic fiber having excellent volume resistance by depositing the conductive copper sulfide nanoparticle composition on an acrylic fiber having an acrylonitrile repeating unit.

Conventional methods for manufacturing conductive fibers include electroless plating, which is a metal film forming method, There are vacuum deposition, sputtering, and the like, and the method of imparting conductivity by these processes is currently limited in terms of equipment and technology. In particular, because of the high cost, it is a situation that is adopted and applied locally for a special use or purpose, and there is a limit to producing it in a general purpose.

Thus, as an alternative to this, the "copper compound fixation method" is commonly used for conductive fibers. The conventionally known technique of the "copper compound fixation method" is coordinated with monovalent copper ions in the cyano (CN) group present in the acrylic fiber. Concentrating on the bond, copper sulfate (CuSO ₄ ), a divalent copper ion, and a reducing agent and a compound such as sulfur (S) atom are chemically bonded to allow copper sulfide (CuS) to precipitate on the fiber, thereby conducting electricity. It is a technique to give.

In addition, the products of the conductive companies currently on the market also need to be improved in terms of their physical properties and problems, and new products with competitiveness in price and quality are required.

Conductive acrylic fiber is a technique of forming a conductive complex by coordinating a bond between a cyano group of an acrylic fiber and copper sulfide obtained from divalent copper ions to produce a fiber.

However, the cyano group of the acrylic fiber is a relatively weak bond, and the bonding structure with the copper sulfide is damaged by washing several times, and thus the copper sulfide is eliminated, resulting in a sharp change in color and conductivity.

In addition, the conventional “copper compound fixing method” is a phenomenon in which copper 1 is in an unstable state due to the use of an excessive amount of sulfide reducing agent in an aqueous solution to have a coordination bond form with a cyano group of acrylonitrile in an acrylic fiber at high speed. This strong, unbonded copper monovalent ion is about to be converted to metal copper and divalent copper ion. This phenomenon causes copper sulfide particles to be large when the copper salt and the sulfiding reducing agent in the aqueous solution are reacted at a high temperature of 70 to 90 ° C for a certain time. It grows, making it difficult to disperse in acrylic fiber tissue and degrades in part due to non-uniform phenomena that partially stick to the fiber surface.

As the reaction temperature increases in the work process, the monovalent metal copper rapidly changes to divalent metal copper ions, so that the amount of precipitate increases as the reaction temperature increases.

The precipitate thus formed is attached to the inner wall of the reaction vessel and the surface of the fiber to combine with oxygen in the air to form a wide oxide film on the surface of the fiber.

This results in a defect in which copper 1 interferes with the binding of ions, resulting in a rough surface of the fiber, and when the reaction temperature is high, the thio compound is oxidatively decomposed in the composition, resulting in a large amount of precipitate. It also reacts with components of sulfuric acid and nitric acid, which are used in the past, and may cause harmful substances such as SOx and NOx, which may adversely affect the working environment.

As such, the conventional method has problems in durability and conductive performance, such as a decrease in physical properties due to chemical resistance (oxidation) due to wear resistance or constant use.

The present invention has been made in view of the above-mentioned problems occurring in the conductive composition required for manufacturing the conventional conductive fiber as described above and the conductive fiber manufacturing method for producing the conductive fiber using the conductive composition,

The use amount of reducing agent is small, and the practical precipitation reaction of copper sulfide on acrylic fiber maintains the rate of low temperature reaction below 55 ℃, and it is excellent in liquid stability that does not cause particle growth even during storage and precipitation reaction. Conductive copper sulfide nanoparticle composition, characterized in that the diameter is 20nm or less,

Providing a conductive acrylic fiber manufacturing method for producing a conductive acrylic fiber having excellent volume resistance by depositing the conductive copper sulfide nanoparticle composition to an acrylic fiber having an acrylonitrile repeating unit, and as a result, chemical resistance due to wear resistance or constant use The purpose is to produce high quality conductive acrylic fibers without problems in durability and conductive performance such as deterioration of physical properties due to change (oxidation), so that they can be widely used not only for clothing but also for industrial use.

The conductive copper sulfide nanoparticle composition of the present invention for achieving the above object basically comprises a copper salt, a phenyl compound-based reducing agent, a low molecular weight sulfur compound, a water-soluble amine, a thio compound, a thio stabilizer and a pH adjuster It has its features.

In addition, the present invention is to immerse the acrylic fiber having an acrylonitrile repeating unit in the conductive copper sulfide nanoparticle composition in order to obtain a high quality conductive acrylic fiber and then reacted at 50 ℃ to 55 ℃ temperature for 0.5 to 5 hours to the acrylic fiber It is characterized by performing a method of coordinating the above composition.

The conductive copper sulfide nanoparticulate composition of the present invention is stably adsorbed and reacted to acrylic fibers stably and economically, and has excellent resistivity, conductivity retention function, and other physical properties.

On the other hand, the conductive acrylic fiber prepared by the method for producing a conductive acrylic fiber using the composition is excellent in durability and conductive performance, such as almost no physical property degradation due to chemical resistance (oxidation) due to wear resistance or constant use, but excellent physical properties of the acrylic fiber As it is maintained, it is possible to mix with other fibers,

Since it has good electrical resistivity value, it is very innovative that can be widely used not only for clothing but also for industrial use for electromagnetic shielding and antistatic.

The conductive copper sulfide nanoparticle composition of the present invention contains a copper salt, a phenyl compound-based reducing agent, a low molecular weight sulfur compound, a water-soluble amine, a thio compound, a thio stabilizer and a pH adjuster.

Here, the average particle diameter of the copper sulfide nanoparticles is preferably 20 nm or less, but is not limited thereto.

In addition, the conductive acrylic fiber manufacturing method of the present invention is immersed in the conductive copper sulfide nanoparticle composition acrylic resin having an acrylonitrile repeating unit and then reacted at 50 ℃ to 55 ℃ temperature for 0.5 to 5 hours to the acrylic fiber Obtained by coordinating the composition.

In the following, first, each component included in the conductive copper sulfide nanoparticle composition will be described in detail, and then a method of manufacturing high quality conductive acrylic fiber using the conductive copper sulfide nanoparticle composition will be described in detail based on various embodiments. I will explain.

In the copper sulfide nanoparticle composition of the present invention, the copper salt is not particularly limited as long as it is a compound which is soluble as a copper metal salt including a copper metal acid and a copper metal salt, and sulfates, nitrates, acetates, water-soluble halides, and other organic and inorganic compounds of copper. Salts and one or more copper salt mixtures may be used to provide copper ions.

In particular, cupric sulphate pentahydrate is preferred in view of ease of purchase and price.

As for content in the composition of a copper compound, 1-30 weight% is suitable with respect to the weight of an acrylic fiber coating material.

If the copper content exceeds 30% by weight, the conductivity becomes high, but the physical properties of the acrylic fiber and copper sulfide precipitates are generated. If the copper content is less than 1% by weight, sufficient conductivity is not secured.

In addition, it is preferable to use a phenyl compound-type reducing agent (represented by the following general formula (I)) as a reducing agent.

R ¹ in Formula 1 represents a hydroxyl group or an amino group, and R ² R <^4> may be same or different, respectively, and represents a hydroxyl group, an amino group, a hydrogen atom, or an alkyl group.

R ² in Chemical Formula I The alkyl group for R ⁴ to R ⁴ is preferably an alkyl group having 1 to 6 linear or branched carbon atoms, and more preferably an alkyl group having 1 to 4 carbon atoms such as a methyl group, an ethyl group, or a t-butyl group. Can be mentioned.

Specific compounds of this class include phenol, O-cresol, P-cresol, O-ethylphenol, P-ethylphenol, t-butylphenol, O-aminophenol, P-aminophenol, hydroquinone, catechol, pyrogallol, Methyl hydroquinone, aniline, O-phenylenediamine, P-phenylenediamine, O-toluidine, P-toluidine, O-ethylaniline, P-ethylaniline, etc. are mentioned.

Among them, one or more kinds can be used, and among them, P-phenylenediamine, methylhydroquinone, hydroquinone and the like are preferable.

The content is preferably in the range of 0.05 to 5% by weight based on the weight of the acrylic fiber coating.

If this phenyl-type reducing agent content is less than 0.05 weight%, practical reduction will not occur.

In addition, if the content exceeds 5% by weight, it is not preferable because the stability of the composition cannot be ensured.

Colloidal copper nanoparticles which have undergone a reduction reaction of a solution containing a copper metal salt and a phenyl-based reducing compound contain a sulfur compound having a low molecular weight as a protective colloid on the particle surface.

The low molecular weight sulfur compound has a molecular weight of 48 to 180 specifically, and specifically the low molecular weight sulfur compound is, for example, mercaptoacetic acid (molecular weight: 92), mercaptopropionic acid (molecular weight: 106), thiodipropionic acid (molecular weight). : 178), mercaptosuccinic acid (molecular weight: 150), mercaptoethanol (molecular weight: 78), thiodiethylene glycol (molecular weight: 122), thioglycolic acid (molecular weight: 150), aminoethyl mercaptan (molecular weight: 77) , Thiodiethylamine (molecular weight: 120), thiourethane (molecular weight: 105), thiocarboxylic acid (molecular weight: 110), thiourea (molecular weight: 76), thiophenol (molecular weight: 110), thioformamide (molecular weight: 61), methyl mercaptan (molecular weight: 72), isopropyl mercaptan (molecular weight: 76), n-butyl mercaptan (molecular weight: 90), allyl mercaptan (molecular weight: 74), benzyl mercaptan (molecular weight: 124) And salts, derivatives, and the like thereof, and one or more of the above sulfur compounds may be used.

First of all, thiol based sulfur compounds are preferred because of their higher affinity to colloidal metal particles and good protective colloidal functions, with mercaptoacetic acid, mercaptopropionic acid and mercaptoethanol being particularly preferred.

The compound is preferably used at a ratio of 0.05 to 1.5% by weight relative to the weight percent colloidal metal particles, but the low molecular weight sulfur compound may have a good effect as a protective colloid even at a small ratio.

And when the reduction reaction of the metal compound is carried out in the absence of a low molecular weight sulfur compound, the formed colloidal metal particles are immediately precipitated, after which the surface of the colloidal metal particles is not completely protected even if a sulfur compound is added. Remain.

It is therefore essential to reduce the metal compound in the presence of a sulfur compound.

In addition, in the case of using a phenyl-based reducing agent in the copper sulfide nanoparticle composition, by adding at least one water-soluble amine such as ethylenediamine, the precipitation temperature of copper sulfide in the acrylic fiber may be lowered to 55 ° C. or lower, and the precipitation rate may be increased.

In addition, the adhesion of the acrylic fiber can be improved and the liquid stability can be significantly increased.

Such additives therefore typically also act as a complexing agent to preserve copper (II) in the composition.

Such amines include monoalkanolamine, dialkanolamine, trialkanolamine, ethylenetriamine, m-hexylamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, heptamethylenediamine, ethylenediamine, diethyltriamine, Triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, dimethylamine, triethanolamine, hydroxylamine sulfate, EDTA salt and the like can be used. Among them, ethylenediamine, diethylenetriamine, triethylenetetramine, Tetraethylenepentamine and pentaethylenehexamine are preferred, but ethylenediamine is most preferred.

The amount of the water-soluble amines is used in the range of 0.1 to 10% by weight based on the weight of the acrylic fiber coating, but if less than 0.1% by weight, the effect of the amine addition is not sufficiently exhibited. It is not preferable because a case occurs.

Accordingly, the range of 2 to 10% by weight is more preferable.

Water-soluble amines can increase the precipitation rate of the composition by adding one or more of the above, it can also significantly improve the liquid stability.

The conductive copper sulfide nanoparticulate composition further preferably contains a thiosulfate compound as a sulfiding reducing agent and a complexing agent.

 That is, the thiosulfate compound helps to improve the bonding strength of copper sulfide in the acrylic fiber. Examples of the thiosulfate compound include alkali metal salts, alkaline earth metal salts, and ammonium salts of thiosulfate, and specific examples thereof include sodium thiosulfate, potassium thiosulfate, and ammonium thiosulfate.

The content of the content is preferably in the range of 0.1 to 10% by weight, the content of the compound is less than 0.1% by weight of copper sulfide reduction and ignition power is lowered and the stability is poor.

In addition, if the content exceeds 10% by weight, the conductivity is improved, but recrystallization occurs in the liquid, and the thio compound is decomposed during the reaction to generate a large amount of precipitate.

In order to improve the problem of precipitation of thio compounds, the present invention is characterized by using a thio (Thio) stabilizer in the conductive nanoparticle composition.

Such compounds contain at least one Thio stabilizer selected from hydroxylamine sulfate, ascorbic acid, formalin. In particular, hydroxylamine sulfate is most preferable because it remains in the liquid even if it is oxidized and does not significantly affect the complexation and conductivity of the acrylic fiber.

Since such a compound substantially prevents oxidative decomposition of the thio compound when substantially present in the liquid, the concentration is not particularly defined, but 0.01 to 10% by weight relative to the weight of the acrylic fiber coating is appropriate.

In the copper sulfide nanoparticle composition of the present invention, a pH adjusting agent may be further added to maintain a desired precipitation temperature and rate, pH, and the like.

Examples of the compound preferably used include phosphate, acetate, borate, citric acid, sulfate, and the like, and the content thereof is preferably in the range of 2 to 5% by weight.

Hereinafter, as described above, a preferred embodiment of the method for producing a high quality conductive acrylic fiber using the conductive copper sulfide nanoparticle composition is described.

However, the following examples are only one preferred embodiment of the present invention is intended to make it clear that the present invention is by no means limited by the following examples.

< Example>

100% by weight of polyacrylonitrile was added to the beaker, and the composition as shown in Table 1 was added to the beaker at a bath ratio of 1:20, and gradually heated to react at 53 ° C ± 2 ° C for 2 hours, followed by washing with water and dehydration. After drying, it was dried with hot air at 80 ° C.

※ The content is% by weight based on the weight of polyacrylonitrile. Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Cupric sulfate pentahydrate 20 20 20 20 20 20 Hydroquinone One One One 0.5 2 3 Mercaptoacetic acid 0.3 0.3 0.3 0.3 0.3 0.3 Ethylenediamine One 2 2.5 2.5 2.5 2.5 Sodium Thiosulfate Pentahydrate 3.2 3.2 3.2 3.2 3.2 3.2 Hydroxylamine sulfate 0.5 0.5 0.5 0.5 0.5 0.5 Disodium phosphate 2.5 2.5 2.5 2.5 2.5 2.5 Citric acid 2.5 2.5 2.5 2.5 2.5 2.5 Bath reaction temperature 53 ℃ 53 ℃ 53 ℃ 53 ℃ 53 ℃ 53 ℃ Precipitation reaction time 2 hours 2 hours 2 hours 2 hours 2 hours 2 hours Precipitation adhesion failure none none none none none none Sediment formation none none none none none none Bath pH 3.5 3.5 3.5 3.5 3.5 3.5 Cloth appearance color Olive Green Olive Green Olive Green Olive Green Olive Green Olive Green Bath Stability Test o o o o o o Storage stability test (room temperature storage) 10 days or more 10 days or more 10 days or more 10 days or more 10 days or more 10 days or more

In Examples of Table 1, Examples 1 to 3 are the results of the reaction by changing the ethylenediamine concentration to 1, 2, 2.5% by weight.

The reaction precipitation temperature was rapidly progressed to 20 minutes, 25 minutes and 28 minutes even under low hydroquinone concentration as a reducing agent.

In addition, the appearance of polyacrylonitrile also showed olive green color, and there was no discoloration, poor deposition adhesion, or the like.

In addition, it showed stability in the bath stability test during the precipitation reaction and there was no sediment generation in the beaker reactor.

In addition, the storage stability was in a good state without abnormal precipitation of the conductive treatment solution in storage at room temperature for 10 days or more.

Examples 4 to 6 are the results of the reaction by changing the hydroquinone concentration of the reducing agent to 0.5, 2, 3% by weight.

From this result, the favorable precipitation rate which was practical even in the conditions of low concentration of a reducing agent was obtained.

The appearance of the polyacrylonitrile yarn was olive green, and no discoloration or poor deposition adhesion occurred.

In the bath stability test during the precipitation reaction, the bath stability was shown, and no precipitate was generated in the beaker reaction tank, and even when stored at room temperature for 10 days or more, the precipitation stability of the conductive treatment solution was good.

On the other hand, the following physical properties were measured for the conductive acrylic fibers prepared according to Examples 1 to 6, and the measurement results are shown in the following [Table 2].

Tensile strength (cN) Tensile Elongation (%) Heavy metal content (Cu) Resistivity After 50 washes
Resistivity Example 1 312 18.2 2.84 0.2 0.3 Example 2 310 17.9 2.82 0.2 0.3 Example 3 308 17.2 2.92 0.2 0.3 Example 4 310 17.9 2.82 0.2 0.3 Example 5 302 16.5 2.96 0.2 0.3 Example 6 298 16.2 3.12 0.2 0.3

Tensile elongation and tensile strength were measured according to KSK ISO 2062: 2007 and 1cN ≒ 1.0197gf.

Specific resistance (Ω ㎝): KSK 0180: 2003 was used. The tester used ACL 800 Megohm Meter, and applied voltage was 10V, temperature and humidity were (20 ± 2) ℃ and (40 ± 2)% R.H.

Heavy metal (Cu) content (%) was measured by EPA 3052: 1996, and the test conditions were EPA 3052: 1996 and ICP / AES.

The conductive acrylic fiber of the present invention prepared according to Examples 1 to 6, as shown in Table 2 above, copper sulfide nanoparticles having an average particle diameter of 20 nm or less are uniformly adsorbed on the fiber surface to provide uniform and excellent conductivity. Have

In addition, it has excellent washing fastness and is excellent in specific resistance even after 50 washes.

As a result, the conductive acrylic fiber of the present invention obtained by the above-described manufacturing method is excellent in durability and conductive performance while maintaining the physical properties of the acrylic fiber while having excellent durability and conductive properties such as almost no deterioration in physical properties due to chemical resistance (oxidation) due to wear resistance or constant use. Of course, you can mix with other fibers,

Since it has a good electrical resistivity, it can be widely used not only for clothing but also for industrial use for electromagnetic shielding and antistatic.

Claims (8)

In the composition for producing conductive acrylic fiber, Copper salt whose content is 1-30 weight% with respect to the weight of the said acrylic fiber coating 100%, respectively. A phenyl compound-based reducing agent of 0.05 to 5% by weight, Low molecular weight sulfur compounds, 0.05 to 1.5% by weight, 0.1-10% by weight of water-soluble amines, 0.1-10 wt% thio compound, Thio stabilizer which is 0.01 to 10% by weight, Electroconductive copper sulfide nanoparticle composition containing the pH adjuster which is 2-5 weight%. The method of claim 1, The copper salt is a compound which is soluble as a copper metal salt including a copper metal acid and a copper metal salt, and is a mixture of one or more copper salts including sulfates, nitrates, acetates, water-soluble halides and other organic and inorganic salts of copper, The thio compound is a conductive copper sulfide nanoparticle composition, characterized in that at least one of alkali metal salts, alkaline earth metal salts, and ammonium salt compounds of thiosulfate. The method of claim 1, The phenyl compound-based reducing agent, Phenol, O-cresol, P-cresol, O-ethylphenol, P-ethylphenol, t-butylphenol, O-aminophenol, P-aminophenol, hydroquinone, catechol, pyrogallol, methylhydroquinone, aniline, O- Conductive copper sulfide nanoparticle composition, characterized in that at least one selected from phenylenediamine, P-phenylenediamine, O- toluidine, P- toluidine, O-ethyl aniline, P-ethyl aniline. The method of claim 1, The low molecular weight sulfur compound, Mercaptoacetic acid (molecular weight: 92), mercaptopropionic acid (molecular weight: 106), thiodipropionic acid (molecular weight: 178), mercaptosuccinic acid (molecular weight: 150), mercaptoethanol (molecular weight: 78), thiodiethylene glycol (molecular weight: 122), thioglycolic acid (molecular weight: 150), aminoethyl mercaptan (molecular weight: 77), thiodiethylamine (molecular weight: 120), thiourethane (molecular weight: 105), Thiocarboxylic acid (molecular weight: 110), thiourea (molecular weight: 76), thiophenol (molecular weight: 110), thioformamide (molecular weight: 61), methyl mercaptan (molecular weight: 72), isopropyl mercaptan (molecular weight: 76), n-butyl mercaptan (molecular weight: 90), allyl mercaptan (molecular weight: 74), benzyl mercaptan (molecular weight: 124) and salts thereof, including salts and derivatives thereof. Conductive copper sulfide nanoparticle composition. The method of claim 1, The water-soluble amines, Monoalkanolamine, dialkanolamine, trialkanolamine, ethylenetriamine, m-hexylamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, heptamethylenediamine, ethylenediamine, diethyltriamine, triethylenetetra A conductive copper sulfide nanoparticulate composition, which is at least one of min, tetraethylenepentamine, pentaethylenehexamine, dimethylamine, triethanolamine, hydroxylamine sulfate, and EDTA salt. The method of claim 1, The thio stabilizer, Conductive copper sulfide nanoparticle composition, characterized in that at least one selected from hydroxylamine sulfate, ascorbic acid, formalin. The method of claim 1, pH adjuster, A conductive copper sulfide nanoparticulate composition, characterized in that the pH of the composition containing at least one selected from phosphates, acetates, borates, citric acid, sulfates and a pH adjusting agent is in the range of 2-4. In manufacturing the conductive acrylic fiber, Copper salt whose content is 1-30 weight% with respect to the weight of the said acrylic fiber coating 100%, respectively. A phenyl compound-based reducing agent of 0.05 to 5% by weight, Low molecular weight sulfur compounds, 0.05 to 1.5% by weight, 0.1-10% by weight of water-soluble amines, 0.1-10 wt% thio compound, Thio stabilizer which is 0.01 to 10% by weight, After immersing the acrylic fiber having an acrylonitrile repeating unit in the conductive copper sulfide nanoparticle composition comprising a pH adjusting agent of 2 to 5% by weight, the composition is reacted with acrylic fiber by reacting 0.5 to 5 hours at a temperature of 50 ° C to 55 ° C. Conductive acrylic fiber manufacturing method characterized in that the coordination bond.