Synthetic yarn complex, a method for producing the same, fibers containing the same, and clothes containing the fibers

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Specific embodiments will be illustrated in the drawings and described in detail in the written description.

, Many other modifications and variations of the present invention are possible, and it is to be understood that within the scope of the disclosed concept, the present invention may be practiced otherwise than as has been specifically described.

It will be understood that, although the terms first, second, etc, may be used herein to describe various elements, these elements should not be limited by these terms.

Also, in the present invention, the attached drawings are to be understood as being enlarged or reduced for convenience of explanation.

The present invention relates to a synthetic fiber composite, a method for preparing the same, a fiber comprising the same, and a garment including the fiber.

Due to the functional particles, the particles having the conventional functionality have a limitation in functional conferences, due to the difficulty in spinning due to functional particles. In addition, the functional particle treatment of micron units has a problem in that the particles adhere to the surface and simply adhere to the surface. Hence, the description thereof is omitted. There is a need for a method for improving durability through permanent bonding while exerting a specific function without impairing the original function of the fiber using a nanotechnology.

The present invention relates to a composite, a manufacturing method thereof, a fiber comprising the same, and a film including the same.

The present invention is described in more detail below.

The present invention, in one embodiment, is described below.

Synthetic yarns; and synthetic yarns

The composite yarn includes nanoparticles dispersed in the synthetic fiber.

The nanoparticles provide a synthetic fiber composite including a compound having a carboxyl group and a conductive polymer.

The synthetic fiber may be a synthetic fiber having a polarity, and specifically, the synthetic fiber having a polarity may be nylon, urethane, acrylic, or ester fiber. More specifically, the synthetic fiber having the polarity may be nylon, urethane, or acrylic fiber, and preferably, acrylic fiber. In one example, the synthetic fiber having a polarity may Polyacrylonitrile (PAN) fiber. The synthetic fiber may include synthetic fibers having the above polar phase, so that nanoparticles may be uniformly distributed within the synthetic fiber by forming hydrogen bonds with the nanoparticles described later.

The nanoparticles according to an embodiment of the present invention may have a structure in which a compound having a carboxyl group and a conductive polymer are complexed. The alkyl group of the compound having a carboxyl group and the alkyl group of the conductive polymer (for example, ethylhexylgroup of PCPDPDPDTBT) may be bonded by hydrophobic attraction.

In addition, the nanoparticle may include a compound having a carboxyl group and a conductive polymer, and a mole ratio of the compound having a carboxyl group to the conductive polymer 20:1 may 1:20. The present invention is more specifically described below. The mole ratio of the compound having a carboxyl group and the conductive polymer may 18:1 or 5:10, 16:1 and 10:6, or 13:1 and 11:2. By having such a carboxyl group-containing compound and the conductive polymer, a synthetic fiber composite having excellent antibacterial and exothermic characteristics can be provided.

The compound having a carboxyl group may be a fatty acid having a carbon number 5 through 14, and the fatty acid having a carbon number 5 through 14 may be octanoic acid, decanoic acid or dodecanoic acid. The fatty acid having a carbon number 5 through 14 may be octanoic acid, for example. When the nanoparticles include such a fatty acid, a synthetic fiber composite having excellent antibacterial and exothermic characteristics may be provided. In addition, fibers and fabrics having excellent mechanical strength and washing fastness can be obtained.

In addition, the conductive polymer may have an electron donor and an electron acceptor structure in the structure. The conductive polymer has an electron donor and an electron acceptor structure in the structure, and π - conjugate with the conjugated fiber having a polarity. , The conductive polymer may have a sulfur atom and/or a nitrogen atom in the structure, and may have an alkyl group having 5 or 15 carbon atoms in the structure. In addition, the conductive polymer may have thiophene and benzothiadiazole sites in the structure.

One example is the case. The conductive polymer 1 may be at least one selected from the group consisting of a polythiophene-based polymer, a polypyrrole-based polymer polyfluorene-based polymer, a polyacetylene-based polymer, a polythiophene-based polymer, and a polyaniline-based polymer. The poly (cylylylylylthiophene-alt-benzodidithiophene (pyrrolo-benzothithiadiazole)), Poly (2, 5-c] pyrrole-1, poly (2H, 5H) - dione), poly (9, 9-bis (-3 - (2-ethylhexyl) phenyl) fluorene -) Gauxo [3, 9-bis (2 - hexyldecyl) 4- (5-methylthiophthiophen-2-yl) Gauxyl) Gauxo [3, 4-bis (2-ethylhexyl) phenyl) fluorene-1, 4-c] pyrrole-1. Alt-coPoly is -6, 7-bis (4- hexyloxy) phenyl) -4, 9-di - (thiophen-2-yl) pyrrolo (3, 9-bis (3- (2-ethylhexyl) thiadiadiadiazol-2-yl) thiadiazolo-quinoxaline], 5-bis (2-hexyldecyl) thiadiazolyl-2-yl) thiadiazolo-yl) (thiophen-2-yl) thiadiazo-yl), poly (9, thiophen-5H 2-yl) thiadiazolo-4- pyrrolo [9, 3-benzothithiadiazole), and poly (9-dihexylhexyl) 5- (No. 9H, 2H 4-4) - dione {-2 (9-hexylide phenyl) thiadiazolyl) -6 - 9 (9-hexyl) thiadiazolyl phenyl) - fluorene-co-6, 1" (9-) - alt-2, 1, 3-benzothiadiazole), and combinations thereof. More specifically, (poly (cylylylylyl- alt-benzothithiadiazole), Poly (2, 5-bis (2-hexyldecyl) -3 - (5-methylthiophthiophen-2-yl) pyrrolo [3, 9-bis (4-ethylhexyl) phenyl) fluorene - 1, 2H (5H 2-ethylhexyl) phenyl) fluorene-1, or poly (9, l-ethylhexyl) phenyl) fluorene-pyrrolo [9, 9-bis (2-ethylhexyl) phenyl) fluorene. Alt-co-6, 7-bis (4- (hexyloxy) phenyl) -4, 9-di - (thiophen-2-yl) thiadiadiadiazolo-quinoxaline. The synthetic fiber composite according to the present invention can exhibit excellent heat insulation properties by absorbing light energy of wavelength 400 through 1000 nm and converting the energy into thermal energy by including the conductive polymer as described above. , Depending on the type of the conductive polymer, the absorption wavelength range of the nanoparticles may be different. For example, when the conductive polymer is PCPDPDPDTBT, the maximum absorption wavelength of the nanoparticles may 780 ˜ 810 nm.

The nanoparticles may be spherical, and the nanoparticles may have an average diameter 20 through 500 nm. , The nanoparticles have an average 20 to 500 nm, 30 through 480 nm, 40 through 460 nm, 50 through 440 nm, 60 and 420 nm, 70, 400 nm, 80 and 380 nm, 90 through 360 nm, 100 through 340 nm, 110 and 320 nm, or between, in the same 130 range, therebetween in a range of from about, 140 280 nm 260 nm 120 and 300 nm. 150 May be 240 nm, or 160 and 230 nm.

The content of the nanoparticles may be 100 parts by weight based on 0.1 5.0 parts by weight of the synthetic yarn. , The content of the nanoparticles may be 100 ˜ 0.2 parts by weight, 4.0 parts to 0.3 parts by weight, 3.0 parts by weight to 0.4 parts by weight, or 0.8 2.0 parts by weight to 0.5 parts by weight based on 1.0 0.6 parts by weight of the synthetic origin. When the nanoparticles are included in such a content, it is possible to provide a synthetic fiber composite having excellent antibacterial and exothermic characteristics. In addition, it is possible to obtain fibers and fabrics having excellent mechanical strength and washing fastness, including nanoparticles with such a content.

For example, the nanoparticles may be uniformly dispersed in a synthetic yarn. , Nanoparticles may be bonded through hydrogen bonding in the synthetic fiber. The nanoparticles may have a structure linked through a hydrogen bond with 2 nd amine groups of a compound including a carboxylic acid on the surface thereof. Through the hydrogen bonding, the nanoparticles may be uniformly distributed within the synthetic fiber.

The present invention also provides a method of preparing nanoparticles by mixing a compound having a carboxyl group with a conductive polymer.

Mixing the nano particles and the fiber in a solvent to prepare a mixed solution; and preparing the mixed solution.

The mixed solution is wet-spun to prepare a yarn.

In one example, the preparing of the nanoparticles may be performed by irradiating an ultrasonic wave of 10 to 100 kHz for 1 ˜ 10 minutes. , It will be described below. The preparing of the nanoparticles may be performed by irradiating an ultrasonic wave of 20 to 60 kHz for 1 ˜ 5 minutes. , The compound including the conductive polymer and the carboxyl group can be uniformly mixed.

, The weight ratio of the fatty acid to the conductive polymer 1 may be 5 and 20. More specifically, in preparing nanoparticles, the mole ratio of the compound having the carboxyl group to the conductive polymer may 20:1 ˜ 1:20. More specifically, the mole ratio of the compound having carboxyl groups to the conductive polymer may 18:1 ˜ 5:10, 16:1 and 10:6, or 13:1 and 11:2. When the composite is mixed at the above ratio, it is possible to produce a composite having excellent antibacterial and exothermic properties at the same time, through which fibers and fabrics having excellent mechanical properties and washing fastness can be produced. The conductive polymer and the fatty acid may be independently selected from chloroform, tetrahydrofuran, toluene, xylene, hexane, and chlorobenzene as a solvent to prepare each solution. , In the preparation of a compound solution having each conductive polymer and a carboxyl group, the solvent may be independently chloroform, toluene or hexane.

Further, one or more of dimethyl formamide (DMF) or dimethylsulfoxide (DMSO) and N - methyl -2 - pyrrolidone (NMP) may be used when mixing the conductive polymer solution and the compound solution having a carboxyl group. , It will be described below. In preparing the complex, dimethyl formamide (DMF) or dimethylsulfoxide (DMSO) may be used as a solvent.

As an example, the nanoparticles may be mixed with a conductive polymer and a compound having a carboxyl group at room temperature (20 ˜ 25 °C) during 30 ˜ 2 hours before irradiating the ultrasonic waves in the step of preparing the nanoparticles. , The conductive polymer and the compound having a carboxyl group may be mixed at 25 °C for 30 minute to 60 minute. When the stirring is performed as described above, a compound having a conductive polymer and a carboxyl group may be sufficiently reacted to help the formation of nanoparticles.

The preparation of the nanoparticles may be performed at a temperature between 50 °C and 100 °C for 2 ˜10 hours before the nanoparticles are manufactured by irradiating ultrasonic waves to prepare nanoparticles, and the nanoparticles may be stirred at a temperature between about 4 ˜10 hours to prepare nanoparticles. In detail 70 °C and 90 °C may be stirred for 2 days to prepare nanoparticles by stirring at 3 ˜10 hours.

As an example, the nano-particles prepared in preparing the synthetic fiber composite may be mixed at 100 parts by weight, based on 0.2 1.5 parts by weight of the synthetic fiber. , 100 Parts by weight based on 0.1 parts by weight of the 5.0 synthetic origin of the prepared nanoparticles may be used. , The content of the nanoparticles may be between 100 and 0.2 parts by weight, 4.0 parts by weight, 0.3 parts by weight, 3.0 parts by weight to 0.4 0.6 parts by weight, or 2.0 to 0.5 parts by weight based on 0.8 1.0 parts by weight of the synthetic origin. When nanoparticles are mixed with such a content, the nanoparticles may be mixed. The synthetic fiber composite prepared in the present invention can simultaneously exhibit excellent exothermic characteristics having excellent antibacterial properties.

In preparing the complex, one or more of dimethyl formamide (DMF) or dimethylsulfoxide (DMSO) and N - methyl -2 - pyrrolidone (NMP) may be used as a solvent. To prepare the complex, dimethyl formamide (DMF) or dimethylsulfoxide (DMSO) may be used as a solvent.

In addition, the present invention provides fibers comprising the composite yarn composite according to the invention.

, The fiber according to the present invention comprises: a synthetic yarn; and nanoparticles dispersed in the synthetic fiber.

The nanoparticles may include a composite yarn composite including a compound having a carboxyl group and a conductive polymer.

As one example, the fiber according to the present invention may be manufactured by electrospinning, whereby the diameter of the fiber may be determined according to the diameter of a hole hole of the spinning machine emitting the fiber. , The average diameter of the fibers may be 0.5 ˜ 100 μm. More specifically, the average diameter of the fibers may be 1 ˜ 80 □ m, 5 to 60 um m, 10 to 40 um m, or 15 ˜ 30 um m.

As another example, the fiber according to the present invention includes nanoparticles complexed with a conductive polymer and a compound having a carboxyl group, thereby providing fibers having excellent antibiosis and heat insulation.

The invention also provides garments comprising the fibers according to the invention.

, The fiber according to the present invention is a synthetic yarn; and a synthetic yarn.

The composite yarn includes nanoparticles dispersed in the synthetic fiber.

The nanoparticles may include a composite yarn composite including a compound having a carboxyl group and a conductive polymer.

One example. The garment according to the invention may be a kind of fabric, which can be knitted in combination with synthetic fibers, such as acrylic for reinforcement, for reinforcement.

As another example, the clothes according to the present invention include nanoparticles complexed with a compound having a carboxyl group and nanoparticles complexed with a conductive polymer, thereby providing fibers having excellent antibiosis and heat insulation. In addition, the garments may have excellent wash fastness and mechanical properties.

, The present invention will be described in more detail by Examples and Experimental Examples.

However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the scope of the present invention is not limited to the following Examples and Experimental Examples.

<Embodiment>

Embodiment 1. Preparation of synthetic yarn composites

Preparation of nanoparticles

Octanoic oic acid 10 Ml was added to the Chloroloroform 74 mg to prepare an octanoic acid solution. The prepared octanoic acid solution 2.2 Ml was mixed at 1500 rpm and mixed with dimethyl sulfoxide (DMSO) 20 Ml to prepare a mixed solution, and then poured into 15 minutes. Then, in chloroform 1 Ml poly [2,6- (4, 4-bis - (2-ethylhexyl) - 4444400 (2, 1-b; 3, 4-b '] - didithiophene) - alt-4, (2, 1, 3-benzothithiadiazole)] (PCPDTBT) 1 mg was added dropwise to the mixed solution and stirred for 5 Ml days. At this time, PCPDPDPDTBT and OA molar ratio were 1:12, and the PCPDPDPDY concentration was 0.94 µm and the concentration of octanoic acid was mixed at 11.29 µm. The mixture was stirred at room temperature for 5 days in bath type ultrasonic cleaner at 40 kHz frequency, and heated at 1500 rpm for 3 days with stirring at 80 °C, and the chloroform was completely evaporated to prepare a nano-particle solution (see FIG. 1).

Synthetic fiber composite production

PAN is dissolved in dimethylsulfoxide (DMSO), and 18.5 weight % Polyacrylonitrile (PAN) is dissolved therein. The nanoparticle solution prepared in DMSO was mixed to include 0.75 weight ratio nanoparticles with PAN. The solution containing PAN and nanoparticles was then poured into a Petri dish and dried at 25 °C times in a vacuum oven for 48 days to prepare a composite and made into a film of diameter 5 cm with the composite.

Comparative Example 1.

Except that octanoic oic acid was not added to the Chloroloroform, a nanoparticle solution was prepared in the same manner as in Example 1.

Embodiment 2. Preparation of fibers comprising synthetic yarn composites

PAN (Polyacrylonitrile) was dissolved in dimethylsulfoxide (DMSO) in 18 weight % (DMSO: PAN=====82:18), and the nanoparticle solution prepared in DMSO was mixed to include 0.75 weight ratio nanoparticles with PAN. And PAN carbon carbon is prepared by lab-scale wet spinning (Wet-spinning machine).

Comparative Example 2.

PAN-based fibers containing no nanoparticles were prepared (Average Mw=150, 000 g/mol, Siggma-Aldrdrich).

Embodiment 3. Production of fabrics comprising synthetic yarn composites

The fibers prepared in Example 2 were knitted with a 5cm × 5cm-size knitted fabric hand knitting method at 5, respectively. At this time, commercially available acrylic yarns (100% acrylic yarn, 3/80 nm) 6ply were laminated to each sample 1ply for reinforcement to plain stitch.

Comparative Example 3

Except that PAN is used as wet spinning fiber, a fabric was prepared as in Example 3.

Experimental Example 1. Characterization of nanoparticles

1 -1. UV-Vis absorbance measurement of nanoparticles

To confirm the optical properties of the nanoparticles prepared in Example 1 UV-Vis absorbance experiments were performed on the nanoparticles prepared in Examples 1 and Comparative Example 1. The results are shown in FIG. 2.

2 Is UV absorption spectrum graph for nanoparticles prepared in Examples 1 and Comparative Example 1. , UV absorption experiments were performed using a conductive polymer (Comparative Example OA=1) dissolved on a conductive solvent as a comparative example of the nanoparticles (PCPDPDPDTBT: 12 mol %: 1).

To FIG. 2, it was confirmed that nanoparticles including a conductive polymer (PCPDPDPDTBT) bound with a compound having a carboxyl group exhibit enhanced optical properties. , When PCPDPDPDTBT was dissolved in chloroform as a single chain, maximum absorption at 718 nm was observed, and this reflected delococation in the molecule of the conjugated backbone. , The nanoparticles of Example 1 showed a maximum absorption at 796 nm and this change indicates that the alkyl chain of the octanoic acid and the conjugated backbone of the conductive polymer are bonded to each other.

1 -2. Identification of morphology of nanoparticles

To confirm the morphology of the nanoparticles according to the present invention, the nanoparticles prepared in Example 1 were photographed under Field EmEmEmEmEmEmEmEmission Electron Microscopy (FE-SEM) and Transmission ission ission ission Electron Microscopy (TEM), and the results are shown in FIG. 3.

3 Is an image of the nanoparticles prepared in Example 1 with a field emission scanning electron microscope a and a transmission electron microscope b.

To FIG. 3, it was confirmed that the nanoparticles have a spherical shape, and the nanoparticles have an average diameter 185.8 ± 16.7 nm.

1 -3. Sacicular X-ray diffraction measurement of nanoparticles

A Grazing-Incidcident X-ray DiffDiffDiffraction is provided to confirm bonding properties between components and components of the nanoparticles according to the present invention. GIXXD was measured and the measured results are shown in FIG. 4.

4 Is a graph of the composite prepared in Example 1 using Sacicular X-ray diffraction, (a)- (c) is 2D GIXD pattern graph, (d) and (e) are graphs showing a diffraction peak of qtz and qrrz. For reference, FIG. 4 (a) is a nanoparticle (Example 1), (b) is an oxcarbonic acid film, (c) is a 2D GIXD pattern graph PCPDPDPDTBT film.

, The molecular aggregate structure of the nanoparticles was investigated using GIXXD after drop casting and drying the nanoparticle solution in DMSO on a silicon substrate. As a comparative example PCPDPDPDTBT and OA solutions of OA were dropped casting and dried GIXXD.

4 (A) 2D GIXD pattern clearly shows the characteristic peaks of OA film (FIG. 4 (b)), but clearly shows a similar peak to PCPDPDPDTBT film (FIG. 4 (c)). Further, referring 4 to FIG. (d), the 1.610 Å -1 three 2D PCPDPDPDTBT peaks shown in the in-line plane cleavage of (110) (004) images of 150 q=12.9 Å, b=12.9 Å, b=19.8 Å, c=1000 Å, c=23.6. ANG. ANG. ANG. ANG. Q=(150) The surface corresponds to d=9 Å and represents π - π stacking distance between the conjugated surfaces of PCPDPDPDs in the nanoparticles. These 3 characteristic peaks of crystalline PCPDPDPDTBT become more apparent when PCPDPDPDTBT chains are assembled with OA as shown in FIG. 4 (d), indicating that the conjugated backbone is closely related to each other and the resulting intermolecular electron beam relativity causes color change in the absorption spectrum.

, OA represents two distinct peaks in q=====(d=====6 Å) and 1.850 Å -1 (d=====4 Å) in a 1-dimensional 2D GIXD plane out of line truncation of (1D) images. D intervals from 2 peaks indicate the length of OA and the size of the polar head, indicating that the carboxylic acid bound by hydrogen bonding in OA films contributes to diffraction peaks.

In nanoparticles, after assembly with PCPDPDPDs, this characteristic peak of OA disappears, meaning OA molecules are integrated with PCPDPDPDTBT chains of CPN.

Experimental Example 2. Antimicrobial evaluation of synthetic yarn composites

To evaluate the antibacterial properties of the synthetic fiber composite according to the present invention, the following experiments were conducted.

(1) antibacterial

The synthetic fiber composite prepared in Example 1 was evaluated by using PAN film including conductive polymer nanoparticles. The results are shown in FIG. 5 and Table 1.

<Experiment method>

- A strain 1 - Staphylococcus aureus ATCC 6538P strain

Strain 2 - Escherichia coli ATCC 8739

- Standard coating film: Stototototoer 400 (r) POLLY-BAG

- Test conditions: The test inocula was cultured at 35 ± 1 °C and RH 90 90 90 90 at 24 time and the number of cells was measured.

- Sample surface area: submitting condition

- Antibacterial activity (S): log (M)_b /M_c (%): [(M + H)]_b - M_c M/M_b ] × 100

- (F): log (M)_b /M_a ) (1.5 Or more)

- M_a Average of live cells immediately after inoculation of standard samples (3 samples)

- M_b A standard sample for a predetermined time (24 time) and an average of viable cells (3 samples).

- M_c The method of claim 24, wherein the sample is cultured for a predetermined time period of time. 3.

5 Is a photograph showing an antimicrobial test result for a film including a composite of Examples. The image (a-0 to a-1) of the upper end is experimental data of the test strain 1, and the image b-0 to b-1 of the lower stage is the experiment data of the test strain 2.

To FIG. 5 and Table 1, the antibacterial experiment is compared with the empty sample (a-0, b-a) for convenience. Gram-positive bacteria and Gram negative bacteria S. Aurereus and E. Coli was cultured in the empty petri dish and the synthetic fiber complex, respectively. , The synthetic fiber complex prepared in Example 1 is cultured at 35 °C days at 24 days, and then the representative gram positive bacteria and gram negative bacteria S are cultured. Aurereus and E. Coli has an antibacterial activity 6.1, and showed an antibacterial activity of 99.9%.

Experimental Example 3. Characterization of fibers comprising synthetic yarn composites

[Field EmEmEmEmEmEmEmEmission Electron Microscope, FE-SEM), Transmission ission ission ission Electron Microscope (TEM), Optical MicroMicroscope, for the fibers prepared in Example 2 to identify the morphology of fibers comprising synthetic fiber composites according to the invention. OM and fluorescence microscopy were taken as Fluorescence escence escence spectroscopy FM), and the results are shown in FIG. 6 and FIG. 7.

6 Is an image obtained by taking the fibers prepared in Example 2 into a field emission scanning electron microscope a and a transmission electron microscope b. To (a) of FIG. 6, in the case of fibers prepared in Example 2, the nanoparticles were observed as bright spots on the fiber surface. Further, referring to (b) of FIG. 6, it was confirmed that nanoparticles in PAN fibers appear uniformly in the PAN fiber.

7 Is an image obtained by photographing a fiber manufactured in Example 2 with an optical microscope OM, (a) is an optical image measured without an optical filter, (b) is an optical image at 650 nm light irradiation. To FIG. 7, the average diameter of the fibers was 19.84 ± 0.98 μm, and it was confirmed that light was emitted during light irradiation.

, It is understood that the fiber according to the present invention has a structure in which nanoparticles including a conductive polymer and a compound having a carboxyl group are uniformly distributed on a synthetic fiber.

Experimental Example 4. Mechanical properties measurement of fibers comprising synthetic yarn composites

The tensile strength of the fiber was measured to determine the mechanical properties of the fiber including the synthetic fiber composite. For example, pure PAN fibers were used, and durability of PAN fibers (Comparative Examples 2) and Examples 2 before and after washing of the fibers were measured, and the results are shown in FIG. 8.

Pure PAN fibers (Samples 0), PAN/CPN nano-composite fibers (Example 2) before knitting the fabrics, breaking force of the 1 single filaments separated from the samples 4) were measured, and the breaking force of the nano-composite fibers (Example 2) was measured before washing (sample 2) and washing (sample 3).

Example 8 was pure PAN fiber (Comparative Example 2) (Sample 0). The fabric was subjected to PAN/CPN nano-composite fibers (Example 2) (sample 1) before knitting the fabric, and a tensile strength of (sample 2)/washing (sample 3) before washing of the nanocomposite fiber.

To FIG. 8, the average breaking force of Samples 0, 1, 2 and 3 was 4.68 ±0.36, 5.74 ±0.25, 5.27 ±0.17 and 5.13 ±0.29 cN, respectively. It can be converted to fibers having an average diameter 19.84 □ m, respectively 151.28, 185.78, 170.54 and 165.94 MPa tensile strength, respectively.

The tensile strength for Samples 2 and 3 is 1 and 91.8% relative to the tensile strength of Sample 89.4%, indicating that loss of about 10% occurs in the knit and dart process of the fabric. In addition, the fracture strength of pure PAN fiber (sample 0) was PAN/CPN lower than 1 nano-composite fiber (sample 22%) before knitting.

This shows that nanoparticles are uniformly distributed in PAN fibers to improve mechanical properties.

Experimental Example 5. Wash fastness test

[3] To determine whether the fibers of the acrylic fiber and the comparative example 3 containing the nano-composite having the heat storage function prepared in the present embodiment are compatible with the clothing material, discoloration and photothermal insulation properties before and after the conditions were evaluated and compared.

The application standard of the washing test was tested under 105 - C06 conditions with reference to 'KKKKISO 2014:61 -2010 Colorfastness to laundering home and commercial washing' (see 'AAAAAATCC Test Method 4: Accelercelercelerometer') and washing conditions are shown in Table 2. The sample was not stained.

Reference In order to accelerate the change of the surface of the fabric, stainless steel steel ball is used as the accelerated lalalalaing test. However, stainless steel steel was not used in the present washing test in view of its functional material.

The test apparatus was a Launder-40 ±2/min Ometer (revolution: ±2 °C water temperature=standard temperature), Steel less container 2014, and the detergent and detergent solution were poured ECE detergents containing no fluorescent whitening 4 g agent 1 L by regulations of KS: and a standard detergent of was dissolved in water at. The components of the standard detergent are shown in Table 3. Sodium perperborate was added to the detergent.

A photograph before/after washing treatment is shown in FIG. 9. The wash fastness of all washed fabrics was 4 -5, and was second to 1 at 5 speeds between 9 and 2. In addition, the laundry treated fabric did not significantly decrease in comparison with the untreated fabric. Optical images of the fabric based PAN fiber and nanocomposite fiber after washing were also shown in FIG. 9 (b), (c). Since dark blue of textiles based on nano-composite fibers is mainly due to nanoparticles that absorb green and red light, the wash fastness of the fabric indicates that the nanoparticles are stable in the nano-composite fiber under the influence of chemical and physical force by the detergent and washing machine.

Experimental Example 6. Experiment for evaluating photo-heating

[3]Aphotothermal evaluation experiment was conducted by using the fabrics prepared in Examples and Comparative Examples 3, and the results are shown in FIG. 10, FIG. 11, and Table 4.

<Experiment method>

: (25±1) °C.

Samples were stabilized to equal temperatures in the dark room.

Solar ar was irradiated with light under the condition 20 cm, and the sample was irradiated with light at 10 minutes, and the temperature of the sample in the film state for every 60 minute was measured, and the temperature was checked for 60 minutes after the light irradiation. The temperature was measured using IR thermometer.

FIGS. 10. 11 And 4, it can be seen that the temperature is rapidly increased after the light is irradiated, compared with the comparative examples. In addition, it can be seen that the pre-washing sample (b-0) and the comparator (a-1) have a highest peak temperature 12.6 °C.

In addition, after washing, the sample (b-1), (b-2), (b-3), (a-3), and (a-4) have a maximum temperature difference of 1.1 °C - 2.8°C and a comparative group (a-1), (a-2), and (a-4) 0.6 °C - 2.6°C show very good photothermal efficiency after the washing process is carried out (a-0).