KR20160127964A - Hygroscopic heat-releasing fiber - Google Patents

Abstract

The present invention relates to a hygroscopic heat-generating fiber. More specifically, the hygroscopic heat-generating fiber according to the present invention is characterized in that an acrylate fiber and a polypropylene fiber each having a carboxyl group and an amide group are mixed and spin- The fiber is characterized by having excellent exothermic function and excellent dyeability.

Description

[0001] Hygroscopic heat-releasing fiber [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hygroscopic heat generating fiber, and more particularly to a hygroscopic heat generating fiber having an exothermic function.

The textile industry in recent years has been developing with emphasis on high functionality with the rapid growth of outdoor. Especially after the 2000s, the functionality of the garments has been emphasized in order to prepare for the extreme or extreme environment while undergoing a rapid change of climate around the world.

Early insulation materials to prepare for extreme environments started with outdoor clothing including high-density fabrics and laminating technology, and gradually flowed into thermal insulation materials for innerwear. Consumers are looking for an innerwear that is thin and light, and can be warmed up in an effort to avoid losing fashion. Such active heat-insulating materials have the effect of saving energy, and the necessity of development thereof is increasing.

The initial development of the thermal insulation material is, for example, a bristle or a thermal insulation insert with an air layer to increase the amount of the insulation, followed by a thermal insulation fiber including a hollow fiber or a dense fabric. These thermal insulation fibers are classified as passive warming materials by minimizing the conduction or convection of heat by using a stagnant air layer between clothes and body in clothing or clothes to reduce the loss of body temperature from the external environment.

Due to the maturation of the textile industry and the advancement of yarn production and processing technology, active heat-insulating materials incorporating the concept of heat generation are being developed. Active thermal insulation materials are distinguished from conventional thermal insulation materials in terms of insulation and embedding. Thermal insulation fibers, which are active thermal insulation materials, can be divided into physicochemical heating fibers and electric heating fibers. Physicochemical heat-generating fibers are materials that absorb heat generated by heating elements or fibers incorporated in the yarn itself. Physicochemical heating The heating element used in the heating fiber is an inorganic substance such as zirconium, which has a heating mechanism that absorbs and stores the visible light of the sun in the form of a fiber and emits it in the form of far-infrared rays. The material using the heat absorption of fiber absorbs moisture and has a mechanism to generate heat accordingly. The electric heating fiber has a principle that a metal or a conductive material arranged on a fibrous body is heated as a linear or planar heating element through an electric external power source.

In the case of innerwear, since it is located in the innermost part of the wearer's body, moisture-absorbing heat-generating fiber is mainly used because it can absorb water generated in the human body. In the case of outerwear, heat-storing and discharging fiber is mainly used and some electric heat- .

Korean Patent Laid-Open Publication No. 2014-0014636 discloses a method for producing an antimicrobial heat-preserving fiber that imparts antimicrobial properties, a fiber produced by the above method, and a fabric produced using the fiber. The carbon particles and the inorganic particles contained in the fibers impart a warm keeping function and an antibacterial function to the fibers, and the washing fastness of the fabric made of the fibers Is prevented from being lowered.

Korean Patent Laid-Open Publication No. 2013-0121261 relates to a pleated fabric coated with a nano carbon fiber having a function of radiating heat on the surface of a fabric and a method of manufacturing the same. In the blended nano carbon fiber and urethane resin And a liquid is coated on the surface of the raw fabric to form a heat generating layer.

An object of an embodiment according to the present invention is to provide a moisture-absorbing heat generating fiber having excellent heat generating function.

One embodiment of the present invention provides a hygroscopic heat generating fiber characterized in that an acrylate fiber and a polypropylene fiber having a carboxyl group and an amide group are mixed and spun.

The blend ratio of the acrylate fibers may be 5 to 95%.

The number of the hygroscopic heat generating fibers is 10 to 120 Ne, and the twist is 3.5 to 4.2TM.

The moisture-absorbing heat generating fiber may have a structure of a uniform blend yarn, a Siro yarn yarn, or a core yarn yarn.

The hygroscopic heat-generating fiber may be mixed with synthetic fibers, natural fibers, regenerated fibers or semisynthetic fibers, and the fibers may be spun.

The hygroscopic heat-generating fiber according to the present invention is a heat-generating material having a multidimensional mechanism, and has a heat-generating function of absorbing water vapor emitted from the body to generate heat, a thermosensitive function to prevent heat from leaking out, It has antibacterial function to reduce, stretch function to comfort comfort, sweat-absorbent quick-drying function to absorb moisture coming out from body.

Further, the hygroscopic heat generating fiber according to the present invention may have excellent dyeing property, antistatic property and deodorizing property.

Further, a fabric having a hygroscopic heat-generating function can be obtained by woven fabrics such as fabrics and knitted fabrics with the hygroscopic heating fibers according to the present invention. The hygroscopic heat-generating fibers can be compounded with other fibers, have.

1 is a cross-sectional view schematically showing the structure of a heat-absorption heat generating fiber according to the present invention.
FIG. 2 is a diagram schematically illustrating a mechanism of moisture absorption and heating according to spinning structure.
3 is a photograph showing the results of moisture absorption analysis of the heat-absorption heat generating fiber according to the embodiment of the present invention.
4 is a graph showing the profile of dyeing used in the dyeing property test of the heat-absorbing heat generating fiber according to the embodiment of the present invention.
5 is a photograph and a graph showing the result of dyeing the heat-absorption and heat-generating fiber according to the embodiment of the present invention with three primary color dyes.
6 is a photograph and a graph showing the result of dyeing the heat-absorbing heat-generating fiber according to the embodiment of the present invention with an acidic dye of three primary colors.
7 is a photograph and a graph showing the result of dyeing the heat-absorption and heat-generating fiber according to the embodiment of the present invention with three primary color dispersion dyes.
FIG. 8 is a graph showing adsorption characteristics when the E-type 3 primary color disperse dye is applied to a polypropylene fiber.
FIG. 9 is a graph showing adsorption characteristics when S-type 3 primary color disperse dye is applied to polypropylene fibers.
10 is a graph showing the results of staining with 19 disperse dyes in the heat-absorption heat generating fiber according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Therefore, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

Throughout the description of the present invention, when a component is referred to as " comprising ", it means that it can include other components as well, without excluding other components unless specifically stated otherwise.

In the specification of the present invention, it is to be understood that when a step is located "on" or "before" another step, this is not only the case where a step is in a direct time series relationship with another step, And may have the same rights as in the case of an indirect temporal relationship in which the temporal order of the two phases can be changed.

The terms " about ", " substantially ", etc. used to the extent that they are used throughout the specification of the present invention are used in their numerical values or in close proximity to their numerical values when the manufacturing and material tolerances inherent in the meanings mentioned are presented, Is used to prevent unauthorized exploitation by an unscrupulous infringer of precise or absolute disclosures in order to aid in the understanding of the disclosure. The term " step " or " step of ~ " used throughout the specification does not mean " step for.

The present invention relates to a hygroscopic heat generating fiber and a fabric made of the same, wherein the hygroscopic heat generating fiber according to the present invention is characterized in that an acrylate fiber and a polypropylene fiber having a carboxyl group and an amide group are mixed and spin-coated.

The hygroscopic heat-generating fiber according to the present invention is a heat-generating material having a multidimensional mechanism, and has a heat-generating function of absorbing water vapor emitted from the body to generate heat, a thermosensitive function to prevent heat from leaking out, It has antibacterial function to reduce, stretch function to comfort comfort, sweat-absorbent quick-drying function to absorb moisture coming out from body.

The acrylate fiber forming the heat-absorption and heat-generating fiber according to the present invention has a carboxyl group and an amide group as shown in the following formula (1), wherein a hydrophilic group is disposed on the surface of the fiber, So that the generation of hygroscopic heat can be high.

[Chemical Formula 1]

As described above, the acrylate fibers having a carboxyl group and an amide group can exhibit high hygroscopic heat and heat generation characteristics as compared with natural fibers such as wool and cotton. More specifically, the acrylate fibers have a wet heat of 25 0 C (relative humidity 80%) of about 271 cal / g, a wool of about 101 cal / g, and a cotton of about 44 cal / g As a result, it was found that the acrylate fiber was about 2.7 times higher than the wool and about 6 times higher than the cotton. Further, the high heat generation of about two times than that of the acrylate fibers was measured to exhibit a heat generation of about 7 ~ 8 ℃, heat generation of eks ^® of Toyobo at 90% relative humidity conditions (approximately 3 ~ 4 ℃) Fig. And can exhibit a temperature of about 7 ° C higher than that of wool having excellent warmth.

The polypropylene fiber forming the moisture-absorbing heat-generating fiber according to the present invention is a lightweight fiber excellent in thermal insulation property. Due to its hydrophobic property, sweat on the surface of the skin can be quickly discharged from the outer surface of the fiber to the surface of the fiber . In addition, the drying speed is faster than other thermal insulation materials, so it always makes you feel comfortable. In addition, the polypropylene fiber has a heat reflecting function and serves to keep the heat generated by the acrylate fiber from being released, and to be held for a long time.

If the blend of highly hygroscopic natural fibers to maximize the hygroscopic and exothermic properties of the acrylate fibers, they may have a disadvantage of showing a heavy feeling unique to natural fibers. However, in the present invention, polypropylene fibers which are lightweight and excellent in thermal insulation are blended to improve the merits of acrylic fibers and polypropylene fibers, as well as to complement each other.

According to one embodiment of the present invention, the hygroscopic heat generating fiber may have a blend ratio of acrylate fibers of 5 to 95%. When the blend ratio of the acrylate fibers is less than 5%, there is a fear that the exothermic functionality is lowered, and when the blend ratio exceeds 95%, the productivity may be lowered. Further, the number of the moisture-absorbing heat generating fibers may be 10 to 120 Ne, and the twist may be 3.5 to 4.2TM.

The hygroscopic heat generating fiber according to one embodiment of the present invention may be a composite structure yarn, for example, a uniform blend yarn, a Siro yarn, and a core yarn.

1 is a cross-sectional view schematically showing the structure of a heat-absorbing heat generating fiber 1 according to the present invention. Fig. 1 (a) schematically shows a cross-section of a uniform blended yarn, wherein the acrylate fibers 10 and the polypropylene fibers 20 may be uniformly dispersed. 1 (b) schematically shows a cross section of a siro yarn. In the hygroscopic heat generating fiber 1, the acrylate fibers 10 are distributed on one side and the polypropylene fibers 20 are distributed on the other side Structure. Fig. 1 (c) schematically shows a cross section of the core spun yarn, in which the polypropylene fibers 20 are distributed in the core, and the acrylate fibers 10 are distributed on the outer periphery of the core.

FIG. 2 is a diagram schematically illustrating a mechanism of moisture absorption and heating according to spinning structure. Due to the high hydrophobicity of the polypropylene, the effect of heat absorption can be varied depending on the structure of the spun yarn. The acrylate fibers are arranged so as to absorb the moisture generated from the human body as much as possible, and the hydrophobic polypropylene, It is possible to arrange it in a position where it can be moved to the acrylate and at the same time the insulating function can be efficiently performed. Depending on the spun yarn structure, the effect of heat absorption after knitting can also be manifested in various ways, and the structure of the spun yarn can be selected as desired.

Generally, in order to produce physicochemical heat-generating fibers, a method of incorporating a heating element into a yarn is used. In this case, oxides and carbonaceous minerals are the most frequently used materials. Materials such as titanium oxide and zirconium carbide may be incorporated into the fiber and spun or added during processing. In addition, an organic material containing a strong hydrophilic group such as a carboxyl group or a hydroxyl group can be processed into a fiber by various methods. These processing agents can enhance the warmth of the fiber, but may affect secondary processing such as dyeing or tentering. More specifically, in the case of a fiber including a ceramic-based processing agent, the dyeability is very low, and there is a problem in uniformity and reproducibility. In addition, in the process of tenter, the solvent and the processing agent may be eluted and cause various problems. Processing with organic materials may also have weaknesses in washing durability as well as processing such as dyeing.

The acrylate fiber used in the heat-generating and heat-generating fiber of the present invention comprises a hydrophilic group carboxylate (Carboxylate, -CO ₂ H) and an amide group (-CONH ₂ ), and a hydrophobic alkyl chain (-CHCH ₂ CHCH ₂ -), so that it can have low dyeability for the same dye.

The general dyeing mechanism of fibers and dyes is that hydrophobic fibers are most dyed by hydrophobic dyes (disperse dyes) and cationic fibers (eg, Nylon, Wool, etc.) are anionic dyes (acid dyes) And anionic fibers (for example, Acrylic) are most excellent in dyeability by cationic dyes (basic dyes).

However, the hygroscopic heat generating fiber according to the present invention may have excellent dyeability when dyed with a specific basic dye or a disperse dye.

More specifically, the hygroscopic heat generating fiber according to one embodiment of the present invention comprises C.I. Basic Yellow 21, C.I. Basic Red 46, and C.I. Basic Blue 41 < / RTI > C.I. Basic Yellow 21 can be represented by the following formula (2), and C.I. Basic Red 46 can be represented by the following formula (3), and C.I. Basic Blue 41 can be represented by the following formula (4).

(2)

(3)

[Chemical Formula 4]

The basic dye is a delocalized cation in which the cation is uniformly distributed throughout the dye molecule. The basic dye is an electrochemical interaction between the cation (-N ⁺ ) of the basic dye and the anion (-CO ₂ ^- Na ⁺ ) of the hygroscopic heating fiber Electrostatic interactions can be assumed to occur strongly.

Also, C.I. Disperse Orange 30, Red 167, Blue 79, C.I. Disperse Yellow 42, C.I. Disperse Orange 44, C.I. Disperse Red 50, C.I. Disperse Violet 33, C.I. Disperse Blue 284, and C.I. Disperse Blue 374 < / RTI >

The use concentration of the dye is not limited to o.w.f. 2 to 4%, and the bath ratio may be 1: 25 to 35.

The moisture-absorbing heat-generating fiber dyed with the dye has excellent color strength and excellent wash fastness.

Further, the hygroscopic heat generating fiber according to the present invention may have excellent antistatic properties. In the case of acrylic fibers, it is known that the generation rate of static electricity is high. However, the hygroscopic heat generating fibers according to the present invention may have a hydrophilic group in acrylate, so that static electricity hardly occurs. Accordingly, it can be used for clothes for winter.

Further, the hygroscopic heat generating fiber according to the present invention may have excellent deodorizing property. Theoretically, the mechanism of manifesting the deodorizing performance is not clear. However, the moisture-absorbing heat-generating fiber according to the present invention exhibited a deodorization rate of 100% after 2 hours in case of ammonia gas and an excellent deodorization rate of about 90% after 2 hours in the case of amines. The deodorization rate of other mercaptans was about 60%. Accordingly, when the hygroscopic heat-generating fiber according to the present invention is applied to clothing products, it is expected that the properties as a deodorant material will be fully manifested.

Another embodiment of the present invention provides a hygroscopic heat generating functional fabric made of the hygroscopic heat generating fiber.

A fabric having a hygroscopic heat generating function can be obtained by weaving a fabric such as a fabric or a knitted fabric with the hygroscopic heat generating fiber. The hygroscopic heat-generating fiber according to the present invention can be compounded with other fibers, and can be fabricated into various patterns of yarn and fabric, thereby diversifying the final clothing product.

The heat-generating heat generating fiber according to one embodiment of the present invention may be mixed with one or more other fibers. But not limited to, synthetic fibers, natural fibers, regenerated fibers, or semisynthetic fibers.

More specifically, the synthetic fibers may be polyurethane, polyester, polyamide, polyolefin, acrylic, rayon (including tencel), or acetate (diacetate). The natural fibers may be natural fibers such as cotton, wool, hemp, kapok, dog, PLA (Poly Lactic Acid), or bamboo fiber.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to the following examples, but they should not be construed as limiting the scope of the present invention.

[Example]

Manufacturing example

80% of polypropylene fiber and 20% of acrylate fiber were spun into a Lab Scale and the following experiment was conducted.

1. Moisture absorption test

The spun yarn prepared above was dried at 105 ° C for 2 hours and allowed to stand in a humid condition (34 ° C, RH 10%) for 3 hours and exposed to a high humidity condition (34 ° C, RH 90%). The maximum heat generation temperature was measured and represented by the temperature difference with the blank (see Table 1 below).

As shown in Table 1, it was found that the hygroscopic heat generating fiber according to the present embodiment exhibits an exotherm of 5.6 ° C when exposed to a high humidity condition of 90% under a low humidity condition of 10% relative humidity.

The moisture absorption and exothermicity test results are expected to vary depending on the thickness and density of the fabric because the sample is used as a single layer. It is expected that the exothermicity can be further improved by changing the blend ratio and the texture of the fabric .

2. Moisture absorption test

The composite yarn produced in the above example was labled in a single structure and knitted, and the moisture absorption of the fabric was tested.

The absorption rate test was carried out in Item 6.27.1 Absorption Rate B method in KS K 081, the test method for knitted fabrics. A 25 cm × 2.5 cm test piece was stopped with a horizontal bar at a constant height with one end touching the water surface of the container containing the distilled water. The height (mm) at which the water rises due to the capillary phenomenon after 10 minutes passed is measured Respectively.

3 is a photograph showing the result of this moisture absorption analysis. In this hygroscopicity test, the hygroscopicity according to the refinement of the composite yarn was tested and the hygroscopicity of 10 mm on average was shown. That is, the moisture-absorbing heat generating fiber according to the present embodiment is expected to be excellent in moisture absorption and heat absorption and heat absorption characteristics.

3. Dyeability test

1) Dyeing property by basic dye

C.I. Basic Yellow 21, C.I. Basic Red 46, C.I. The dyeing characteristics of acrylate having a carboxyl group and an amide group were measured using a three primary color basic dye of Basic Blue 41.

The concentrations used for the three primary color dyes were o.w.f. 3%, and the bath temperature was 1:30. Figure 4 shows the dyeing profile used in this dyeing experiment.

The results of this dyeing experiment are shown in FIG. 5. Referring to FIG. 5, the dyes (Exhaustion,%) of the basic dyes were 97% and 96% And exhibited a good durability of 86%. It is considered that the electrostatic interactions between the cation (-N ⁺ ) of the basic dye and the anion ( ^- CO ₂ ^- Na ⁺ ) of the hygroscopic desizing fiber are very strong in the dyeing process.

2) Dyeing characteristics by acid dye

The same dye concentration, bath ratio, and dyeing profile as those of the basic dye were used, but three primary color acid dyes were used. The results of this dyeing experiment are shown in FIG. 6, and referring to FIG. 6, the dyeing (Exhaustion,%) of each dye is as low as about 10% as compared with the basic dye.

This is because the electrostatic interactions between the anion (-SO ₃ ^- Na ⁺ ) of the acid dye and the cation (-CONH ₃ ⁺ ) of the hygroscopic heating fiber are very weak in the dyeing process.

3) Dyeing characteristics by disperse dye

(1) Using the same dye concentration, bath ratio, and dyeing profile as in the dyeing experiment of the basic dye, the three primary color disperse dyes, C.I. Disperse Yellow 54, C.I. Disperse Red 60, and C.I. Disperse Blue 56 was used. The results of this dyeing experiment are shown in FIG. 7. Referring to FIG. 7, the dyeing efficiency (Exhaustion,%) of the yellow and red dyes was very low 7 ~ 10% Blue dye showed 34% dyeability, but this is not a commercial satisfactory result.

This is because the non-polar interactions of the non-polar groups (Alkyl groups) of the disperse dyes and the non-polar groups (Alkyl chains) of the hygroscopic exothermic fibers in the dyeing process are considered to be very weak.

In addition, adsorption characteristics were evaluated by applying E-type 3 primary color dispersion dyes (CI Disperse Yellow 54, Red 60, Blue 56) to polypropylene fibers. FIG. 8 is a graph showing an adsorption curve according to the present experiment, and it can be confirmed that the adsorption characteristics of the respective disperse dyes are slightly different. More specifically, Yellow 54 reached saturation at 120 ° C first, then Blue 56 reached saturation at the beginning of 130 ° C, and finally Red 60 reached saturation at 30 ° C at 130 ° C. That is, it is judged that the E-type 3 primary-color disperse dye is poor in compatibility due to different adsorption characteristics.

(2) S-type 3 primary color disperse dyes (C.I. Disperse Orange 30, Red 167, Blue 79) were applied to polypropylene fibers to evaluate their adsorption characteristics, and the results are shown in FIG. Referring to FIG. 9, adsorption characteristics of Red 167 and Blue 79 were very similar, and Orange 30 showed the first saturation at the beginning of 130 ° C.

(3) Dyeing experiments were also performed on 19 commercially available disperse dyes (see Table 2 below) to evaluate the dyeing (Exhaustion%). The results are shown in FIG. 10, which shows that C.I. Disperse Yellow 42, C.I. Disperse Orange 44, C.I. Disperse Red 50, C.I. Disperse Violet 33, C.I. Disperse Blue 284, and C.I. Disperse Blue 374 exhibited good adsorptivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It is evident that many variations are possible by those skilled in the art. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

1: moisture-absorbing heat-generating fiber 10: acrylate fiber
20: Polypropylene fiber

Claims (5)

Characterized in that an acrylate fiber and a polypropylene fiber each having a carboxyl group and an amide group are mixed and spun together.
The method according to claim 1,
Wherein the blend ratio of the acrylate fibers is 5 to 95%.
The method according to claim 1,
Wherein the number of the hygroscopic heat generating fibers is 10 to 120 Ne, and the twist is 3.5 to 4.2TM.
The method according to claim 1,
Characterized in that the moisture-absorbing heat generating fiber has a structure of a uniform blended yarn, a Siro yarn, or a core yarn.
The method according to claim 1,
Wherein the moisture-absorbing heat generating fiber is mixed with synthetic fibers, natural fibers, regenerated fibers or semisynthetic fibers and spun.

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