KR20110039642A - Anti-static/water repellent multi-functional finishing method on synthetic fabrics using carbon nano-tube - Google Patents

Abstract

PURPOSE: A method for anti-static/water repellent combination process of synthetic fiber is provided to implement complex functionality. CONSTITUTION: A method for anti-static/water repellent combination process of synthetic fiber comprises: a step of preparing carbon nanotube solution in which carbon nanotubes are uniformly dispersed; a step of preparing anti-static/water repellent processing solution of liquid type, containing water repellent; a step of applying the anti-static/water repellent processing solution onto one side of the synthetic fiber paper(10); and a step of drying and performing thermal treatment.

Description

Antistatic water repellent composite processing method of synthetic fiber using CNT {ANTI-STATIC / WATER REPELLENT MULTI-FUNCTIONAL FINISHING METHOD ON SYNTHETIC FABRICS USING CARBON NANO-TUBE}

The present invention relates to a processing method for simultaneously imparting antistatic performance and water repellent performance to synthetic fibers, and more specifically, by using conductive carbon nanotubes (CNT) that are compatible with existing water repellents and mutually exclusive. The present invention relates to a composite processing method of a type that simultaneously realizes antistatic and water repellent performance.

Synthetic fibers such as polyester, nylon, acrylic, and the like have lower hygroscopicity than natural fibers, and thus have high electrical resistance and are hard to escape static electricity generated by friction. Therefore, the contamination is increased and it is easy to cause problems such as ignition by electric shock or discharge.

Antistatic processing is a process for preventing this, and antistatic processing includes a method of suppressing the generation of static electricity itself and a method of making the generated static electricity easily escape. The latter widely used method is the latter method.

As a processing agent used for antistatic processing, surfactants with temporary performance and durable polymer resins are used. In the case of the polymer resin antistatic processing agent, the processing is performed by forming an insoluble hygroscopic coating on the fiber surface, and is applied only to a special use due to the change of the fiber state by the formed polymer coating. In general, the antistatic processing is performed using a surfactant-type processing agent, the washing resistance is weak and the effect is temporary.

In recent years, as a desire for 'well-being', the water-repellent treatment of the fiber according to the needs of consumers enjoying sports and leisure has become the basis of the functional material. Water repellent is based on the theory that the surface tension difference of two materials does not mix with each other. It is a process to hydrophobize the fiber material so that water falls into the shape of beads from the surface of the fabric. The water repellents used include wax, silicone, and fluorine. The wax or silicone is emulsified with a single substance to be applied to the surface, and the fluorine-based water repellent copolymerizes various monomers other than fluorine. Make it into polymer form and apply it to the surface.

Recently, based on such water repellent processing, research on composite functional materials that combine antibacterial, flame retardant, UV-cut, and antistatic properties has been continuously conducted, and it is released as a high value-added product. . However, in the case of complex functional processing, the functional preparations must be compatible with each other and should not affect each other's performance after processing.

However, in the case of the water repellent agent and the antistatic processing agent, the water repellent agent has a chemical tendency to exclude water components hydrophobicly, but in the case of an antistatic processing agent, they are chemically different from each other having a tendency to contain water components hydrophilically. .

Therefore, the static electricity is easily generated in the water-repellent textile products, and even if the antistatic processing is treated here, it is not easy to obtain the antistatic performance due to the hydrophobicity of the water repellent unless a large amount of antistatic processing agent is used.

The present invention has been made to solve the problems of the prior art as described above, instead of the processing agent to increase the hygroscopicity to the fiber to express the antistatic performance, conductive carbon nanotubes to flow a current without affecting the hygroscopicity It is an object of the present invention to provide a method for antistatic water repellent composite processing of synthetic fibers by post-processing to impart water repellent / antistatic performance by applying (CNT).

The object of the present invention described above can be achieved by the antistatic water repellent composite processing method of the following configuration according to the present invention.

The first aspect of the antistatic water repellent composite processing method according to the present invention,

After preparing a one-component antistatic water-repellent processing liquid containing a carbon nanotube solution and a water-repellent agent uniformly dispersed carbon nanotubes, apply the one-component antistatic water-repellent working liquid to one surface of the synthetic fiber cloth, and then synthesized by drying and heat treatment. It characterized in that the antistatic water repellent layer is formed on one side of the fiber forge.

The second aspect of the antistatic water repellent composite processing method according to the present invention,

After preparing an antistatic process liquid containing a carbon nanotube solution in which carbon nanotubes are uniformly dispersed, applied to one side of a synthetic fiber cloth or treated on both sides by padding, and then dried and heat treated to form an antistatic layer,

And preparing a water repellent treatment solution including a water repellent agent on one side of the antistatic layer or the upper portion of the antistatic layer, and drying and heat-treating to form a water repellent layer.

According to the present invention, since a composite processing method capable of simultaneously expressing the functionality of the characteristics expressed by the mutually opposite principles of water repellency and antistatic is provided, the functional preparation is used because of the conventional chemically opposed performance. Antistatic water repellent complex processing was difficult to express the complex functional through it has an effect that can be easily carried out by the post-processing method.

In particular, when the one-side antistatic water-repellent composite processing method using a one-component processing liquid, there is an advantage that the complex functionality can be implemented by a simple process.

Hereinafter, the configuration of the present invention described above with reference to the drawings in more detail.

1 is a schematic diagram showing a cross-sectional view of a synthetic fiber paper formed by forming an antistatic water repellent layer on one side of the paper by the antistatic water repellent composite processing method according to the first aspect of the present invention, Figures 2a to 2b is a It is a schematic diagram which shows the cross-sectional shape of the synthetic fiber forge of the form which formed the antistatic layer and the water repellent layer on both surfaces of the forge by the antistatic water repellent composite processing method which concerns on the 2nd aspect, FIG. 3 thru | or FIG. It is a view showing a single-side coating method of various forms applicable to the implementation of the composite processing method.

As shown in FIG. 1, according to the first aspect of the antistatic water repellent composite processing method according to the present invention, the antistatic water repellent processed paper 1 having a single antistatic water repellent processed layer 20 formed on one side of the synthetic fiber pouch 10 Is prepared.

The antistatic water repellent processing paper 1 is prepared by mixing a carbon nanotube solution in which the carbon nanotubes 31 are uniformly dispersed and a water repellent agent to prepare a one-component antistatic water repellent processing solution 130, and the synthetic fiber forge 10 After coating on one side of the), and the antistatic water-repellent layer 20 is formed on one side of the synthetic fiber paper 10 by a method of drying and heat treatment.

In order to form the antistatic water repellent layer 20, the method of applying the antistatic water repellent liquid 130 to one side of the synthetic fiber paper 10 may be made by any one of the following four coating methods.

First, there is a spray roll coating method used to coat a low viscosity processing liquid having a viscosity of 0.8 to 2 cps without affecting the appearance of the fabric even after the antistatic water repellent composite processing.

As shown in FIG. 3, the spray roll coating method includes a gravure cylinder coated with a back-up roller 101 covered with rubber and an antistatic water-repellent working liquid 130 sprayed by the spray 110. While passing through the synthetic fiber forge 10 to be treated between the 102, the antistatic water-repellent processing liquid 130 is applied to only one surface in contact with the gravure cylinder 102, a single antistatic on one side of the synthetic fiber forge 10 It is possible to form the water repellent layer 20.

It is advantageous to apply the antistatic water repellent treatment liquid having a viscosity of about 3 to 4 cps by the gravure coating method, which also does not affect the appearance of the fabric after processing.

The gravure coating method may be carried out by a coating apparatus as shown in FIG. 4, and unlike the spray roll coating method, the gravure cylinder 102 is directly immersed in the antistatic water repellent processing liquid 130, and the gravure cylinder 102 is applied. After the antistatic water repellent liquid 130 is applied to the surface of the substrate, the excess antistatic water repellent liquid 130 is removed by the doctor bladder 120, and then the synthetic fiber is placed between the backup roller 101 and the gravure cylinder 102. While passing through the forge 10, the antistatic water repellent liquid 130 is applied to only one surface in contact with the gravure cylinder, it is possible to form the antistatic water repellent layer 20 on one side of the synthetic fiber forge 10.

In order to perform durable processing, the processing liquid is applied by the roll coating method and the knife coating method.

The roll coating method uses a thickening agent to adjust the viscosity of the antistatic water repellent processing liquid to 4,000 cps or more, and is treated using a coating apparatus of the type shown in FIG. 5, and does not slightly affect the texture of the fabric after the treatment. Only durability can be seen to improve the effect.

The roll coating apparatus, like the gravure coating apparatus, immersed the gravure cylinder 102 directly in the antistatic water repellent liquid 130, so that the antistatic water repellent liquid 130 is applied to the surface of the gravure cylinder 102, the doctor After the excess antistatic water repellent liquid 130 is removed with the bladder 120, the antistatic water repellent liquid 130 is brought into contact with the surface of the transfer roller 103 by contacting the GRIA cylinder 102 with the rubber-coated transfer roller 103. ), And then the antistatic water repellent processing liquid 130 is applied only to one surface in contact with the transfer roller 103 while passing the synthetic fiber paper 10 between the backup roller 101 and the transfer roller 103. The antistatic water repellent layer 20 can be formed on one side of the synthetic fiber forge 10.

Knife coating method should be used to adjust the viscosity of the antistatic water-repellent processing liquid 130 or more to 12,000 cps, after the treatment also affects the appearance of the fabric, but is a durable method.

Knife coating is performed using a coating apparatus of the type shown in FIG. 6, while passing the synthetic fiber paper 10 supplied by the transfer roller 104 between the backup roller 104 and the knife 140, and supplying The antistatic water repellent processing liquid 130 may be uniformly spread using the knife 140 to form the antistatic water repellent processing layer 20 on one side of the synthetic fiber paper 10.

On the other hand, according to the second aspect of the antistatic water repellent composite processing method according to the present invention, as shown in Figures 2 to 3 is provided with an antistatic layer 30 and a water repellent layer 40 formed separately on the synthetic fiber wrapping paper 10, respectively. One type of antistatic water repellent wrapping paper 1 ', 1 "is produced.

The antistatic water-repellent processed cloth 1 ', 1 "is prepared by preparing an antistatic process liquid containing a carbon nanotube solution in which carbon nanotubes are uniformly dispersed, and firstly applying one side to one side of the synthetic fiber forge 10 or After impregnating with padding, drying and heat-treating to form an antistatic layer 30 containing carbon nanotubes on one or both surfaces of the synthetic fiber cloth, prepare a water repellent treatment solution containing a water repellent agent and then A process of forming a water repellent layer 40 by applying one side of the antistatic layer 30 on one side of the antistatic layer 30 or on the antistatic layer 40, drying and heat-treating through one of the methods of conjugated one-side coating. It is manufactured through.

Hereinafter, the present invention will be described in more detail with reference to specific examples.

Examples 1-5: One-sided water repellent / antistatic composite processing of polyester fabric

To a water repellent solution containing a 12% fluorine-based water repellent and a 1% cross-linking agent, a homogeneously dispersed, dispersed dispersion of carbon nanotube solution having a solid content of 10% was added at different concentrations and stirred to achieve good dispersion. Then, the one-component antistatic water-repellent solution was prepared.

The concentration of the water-dispersed carbon nanotube solution used was adjusted to 2 (Example 1), 4 (Example 2), 6 (Example 3), 8 (Example 4) and 10 (Example 5)%, respectively. .

The one-component antistatic water-repellent solution was subjected to one-side processing on the surface of the polyester fabric using the gravure coating equipment of the type shown in FIG. 3, and then cured while being transported at a speed of 3 m / min at a temperature of 180 ° C. Was carried out.

Comparative Example 1

The process was carried out under the same conditions as in Example 1 using only the water repellent solution to which the water-dispersed carbon nanotube solution was not added, thereby preparing a single-sided water repellent sole functional fabric.

Test 1: Water Repellency Test

Using the fabric processed in each of the above Examples and Comparative Examples, a water repellency test was carried out according to the method specified in the standard spray test of the American Association of Textile Chemists and Colorists (AATCC), and the results are shown in Table 1. .

division Concentration of Dispersed Carbon Nanotube Solution (%) Water repellency Example 1 2 100 Example 2 4 100 Example 3 6 100 Example 4 8 100 Example 5 10 100 Comparative Example 1 0 100

As shown in Table 1, as a result of the water repellency test, all of the water repellency was 100, and even when the antistatic water repellent composite processing was performed by the addition of carbon nanotubes, it was confirmed that there was almost no decrease in the water repellency.

Test 2: Tribostatic Voltage Test

Fabrics processed in the above Examples and Comparative Examples were subjected to a triboelectric test using a KANEBO EST-7 tester, the results are shown in Table 2.

division Concentration of Dispersed Carbon Nanotube Solution (%) Friction band voltage (Kv) Example 1 2 0.98 Example 2 4 0.8 Example 3 6 0.64 Example 4 8 0.52 Example 5 10 0.3 Comparative Example 1 0 9-10

As a result of the friction voltage test, it was confirmed that the friction voltage was remarkably lowered by the addition of the water dispersion carbon nanotube solution, thereby exhibiting an excellent antistatic effect.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the cross-sectional shape of the synthetic fiber pave which formed the antistatic water repellent finishing layer on the single side | surface of the pouch by the antistatic water repellent composite processing method which concerns on the 1st aspect of this invention.

Figures 2a to 2b is a schematic diagram showing the cross-sectional view of the synthetic fiber pouch of the form of the antistatic layer and the water repellent layer formed on both sides of the forage by the antistatic water repellent composite processing method according to the second aspect of the present invention;

3 to 6 is a view showing a one-side coating method of various forms applicable to the implementation of the antistatic water repellent composite processing method according to the present invention.

*** Explanation of symbols for main parts of drawing ***

1: antistatic water repellent

10: synthetic fiber forge 20: antistatic water repellent layer

30: antistatic layer 40: water repellent layer

101: backup roller 102: gravure cylinder

103: transfer roller 104: feed roller

110: spray 120: doctor blade

130: antistatic water repellent liquid 140: knife

Claims (3)

After preparing a one-component antistatic water-repellent processing liquid containing a carbon nanotube solution and a water-repellent agent uniformly dispersed carbon nanotubes, apply the one-component antistatic water-repellent working liquid to one surface of the synthetic fiber cloth, and then synthesized by drying and heat treatment. Antistatic water repellent composite processing method of synthetic fibers using CNTs, characterized in that the antistatic water repellent layer is formed on one side of the fiber forge. After preparing an antistatic process liquid containing a carbon nanotube solution in which the carbon nanotubes are uniformly dispersed, applied to one side of synthetic fiber cloth or treated on both sides by padding, and then dried and heat treated to form an antistatic layer, a water repellent agent Preparing a water-repellent processing liquid containing a one side coated on the opposite side or the upper portion of the antistatic layer formed with the antistatic layer, the antistatic of the synthetic fiber using the CNT comprising the step of forming a water repellent layer by drying and heat treatment Water repellent compound processing method. The method of claim 1 or 2, wherein the one-sided application of applying the one-component antistatic water repellent, liquid, or water repellent to only one surface of the forge is spray roll coating, gravure coating, roll coating, or knife. Antistatic water repellent composite processing method of synthetic fibers using CNT, characterized in that formed by any one of the coating method.

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