KR20060014110A - High performance four-leaves conjugate fiber with intelligent properties - Google Patents

Abstract

The present invention relates to a sheath-core composite fiber having a four-leaf cross-section structure composed of a first polymer in a sheath component and a second polymer in a core component, wherein the polyalkylene glycol-aliphatic acid copolymer and carbon have a molecular weight of 500 to 1,000. A phase change material containing 13 to 23 polyethylene derivatives and a phosphorus thermal stabilizer is mixed in the core component with 5 to 20% by weight of the core component, and the centrifugal radius (R1) and the vertical radius (R2) of the leaf portion of the sheath component part are mixed. It is a four-sided artificial intelligence high-performance composite fiber characterized in that the ratio of 3: 5 to 5: 3, the phase transition occurs by interaction with the skin temperature of the human body to maintain a constant temperature in any environment to feel comfortable It relates to the manufacture of artificial intelligence-type high-performance composite fibers. The artificial intelligence type high-performance composite fiber of the present invention is a semi-permanent automatic thermoregulation function to the composite fiber having a special yarn cross-section by spinning in the nozzle cross-sectional structure as shown in Figure 1 in order to give the sweat-absorbing fast drying properties, washing resistance and drape very There is an excellent advantage.

Description

High performance four-leaves conjugate fiber with intelligent properties             

1 is a cross-sectional view of the artificial intelligence high-performance composite fiber of the present invention.

The present invention relates to the preparation of artificial intelligence-type high-performance composite fiber having a rapid absorption quick-drying and automatic temperature control function, more specifically, a phase-change material and substrate from solid to liquid, liquid to solid using a biaxial kneader After the polymer is uniformly kneaded to prepare a master polymer, it is melt-spun so as to be incorporated into the core component of the sheath-core composite yarn of the cross-section, and a phase change occurs due to interaction with human skin temperature. The present invention relates to the manufacture of high-performance composite fibers that provide a pleasant feeling by maintaining a high temperature, and are manufactured by adding a phase change material in the melt spinning step, thereby preparing artificially functional high-performance composite fibers having excellent semi-permanent temperature response, laundry durability, and drape. It is about.

In order to manufacture the artificial intelligence composite fiber, there is a technical problem that a complex spinning is performed by incorporating a phase change material in the yarn stage. In order to prevent the phase change material from pyrolysis or thermal deformation during the high temperature composite spinning process, Surface treatment with organic or inorganic materials such as melamine with excellent thermal stability, relatively low-temperature spinning, or the addition of a thermal stabilizer, etc. The phase change material itself has a very low viscosity, so that it is not uniformly kneaded with the substrate polymer. I had a technical challenge.

   Up to now, as an artificial intelligence high-performance composite fiber, a microcapsule of core-cell structure is made by using a phase change material, such as acrylic or melamine resin, which is an organic material, and coated on a fiber or fabric surface using a binder such as urethane or acrylic. Patents are heretofore known (US Pat. No. 6,077,597). In order to give temperature responsiveness by the interaction of human skin temperature using the microencapsulated phase change material by this coating technique, it is generally required to coat more than 20% by weight of phase change material of the fiber. Drape and poor durability due to washing has occurred.

In addition, the pollutants such as sweat emanating from the human body should be discharged to the outside of the system, due to the thick coating film has a bad air ventilation, causing a problem that makes you feel uncomfortable. In addition, due to the thick coating film, flexibility, such as stretchability is reduced, it may cause a problem that the durability due to washing is inferior.

On the other hand, there are some patents (Korean Patent No. 2003-31699) which manufacture a temperature-responsive yarn by adding microencapsulated phase change material during melt spinning to compensate for such poor washing resistance and touch and drape. In this case, the average particle size of the microcapsules should be adjusted to the particle size of the submicrometer, and the dispersant should be added to prevent reaggregation of these particles, and the nozzle clogging caused by the coagulated particles during the melt spinning process. It is pointed out that there is a limit to the addition of microcapsules, so that the lower end of the nozzle must be cleaned frequently, which is disadvantageous in productivity. In addition, in the case of the temperature-responsive yarn of the circular cross section, if the sweat discharged to the outside of the body is not quickly and accurately removed, the discharge of the sweat may cause an unpleasant feeling and an increase and decrease of body temperature. Thus, by having a four-sided cross-sectional structure, it prevents lowering of the body temperature by absorbing and dissipating the extracorporeal sweat quickly and accurately compared to the circular cross-section, the phase change material is emitted from the human body according to the melting point and the magnitude of latent heat It can function to absorb, store and release large amounts of energy.

In order to solve the above problems, the present inventors have conducted extensive research, and have developed a technique for uniformly kneading while adding a small amount of phase change material and a thermal stabilizer having excellent thermal stability to a substrate polymer using a biaxial kneader. The present invention has been completed by establishing a technique of spinning the master polymer of the phase change material thus developed to be incorporated into core components by using a sheath-core composite spinning nozzle having a leaf cross section. In addition, the low-temperature spinning was carried out using a composite spinning machine equipped with fruit that can be temperature controlled at low temperatures. In addition, by complex spinning using a nozzle having a four-sided cross-sectional structure, by absorbing and dissipating the sweat discharged to the outside of the body quickly and accurately, the function of preventing the temperature drop due to the discharge of the sweat was reinforced.

  Therefore, according to the present invention, a polyalkylene glycol-aliphatic acid ball having a molecular weight of 500 to 1,000 in a sheath-core composite fiber having a four-leaf cross-section structure composed of a first polymer in a sheath component and a second polymer in a core component. A phase change material containing a polymer, a polyethylene derivative having 13 to 23 carbon atoms, and a phosphorus thermal stabilizer is mixed in the core component with 5 to 20% by weight of the core component, and the centrifugal radius (R1) and the vertical radius of the leaf portion of the sheath component are included. An artificial intelligence high performance composite fiber is provided, wherein the ratio of (R2) is 3: 5 to 5: 3.

  Hereinafter, the present invention will be described in more detail.

The present invention relates to the manufacture of artificial intelligence fibers with fast sweat absorption and quick temperature control function, using a nozzle having a leaf cross section to give fast sweat absorption quick drying so as to induce the absorption and divergence of sweat generated. The present invention relates to a sheath-core composite fiber composed of a sheath component having a four-leaf cross-sectional structure as shown in FIG. 1 and a polymer having a core component and a phase change material incorporated into the core component.

In the present invention, the phase change material is a polyalkylene glycol-aliphatic acid copolymer having a molecular weight of 500 to 1,000, a polyethylene derivative having 13 to 23 carbon atoms, and a phosphorus thermal stabilizer, and 5 to 20% by weight of the core component is incorporated. It is characterized by.

Phase change materials differ in their ability to absorb, store, and release large amounts of energy emitted by the human body when applied to fibers, depending on their melting point and latent heat size. In general, when the body generates a large amount of heat due to activities such as exercise, it automatically releases sweat, thereby functioning as a metabolism to lower body temperature. As a result, the sweat is absorbed and moved to the clothing being worn. If there is no special function such as sweat drying, the clothing gives a damp feeling and gives off feeling of discomfort. Therefore, a large amount of heat generated by activities such as exercise can be absorbed and stored by a medium, and released again when it feels cold to regulate the body temperature to a constant temperature, thereby maintaining a function of keeping our body at a comfortable temperature at all times. do.

Yarn having a four-sided cross section in the present invention to prevent the temperature decrease by absorbing / releasing the sweat generated in vitro to the body quickly and accurately, the phase change material is a large amount emitted from the human body according to the melting point and the size of latent heat Can absorb, store and release energy. Among the constituents of the phase change material of the present invention, the molecular weight of the polyalkylene glycol-aliphatic acid copolymer is preferably about 500 to 1,000. If the molecular weight is less than 500, the melting point is so low that there is no interaction with human skin temperature. If it exceeds 1,000, the melting point is so high that there is no interaction with human skin temperature. In addition, it is preferable to use a polyethylene-based derivative having 13 to 28 carbon atoms as one of the phase change materials of the present invention. If the carbon number is less than 13, the melting point is too low and there is no interaction with the human skin temperature. If it exceeds, the melting point is too high and there is no interaction with human skin temperature. Here, 1-3 wt% of the phosphorus-based heat stabilizer was added to give thermal stability of the phase change material in the compounding and spinning process steps.

The phase change material contains 5 to 20% by weight of a polyalkylene glycol-aliphatic acid copolymer having a molecular weight of 500 to 1,000, 5 to 20% by weight of a polyethylene derivative having 13 to 23 carbon atoms, and 1 to 3% by weight of a phosphorus thermal stabilizer. When the polyalkylene glycol-aliphatic acid copolymer or polyethylene derivative is less than 5% by weight, the endothermic effect of heat / exotherm due to phase change is small, and when it exceeds 20% by weight, it is thermally unstable, and the viscosity decreases severely. It causes a decrease in physical properties. On the other hand, the passion stabilizer is less than 1% by weight, the effect of passion stability is lowered, and when it exceeds 3% by weight, the raw material price rises.

When the phase change material with low thermal stability is kneaded with the matrix polymer to melt spinning, it is important to uniformly knead the phase change material with the substrate polymer. Since the phase change material of the glycols-aliphatic acid copolymer itself is considerably low in viscosity, it is difficult to prepare a uniform master polymer by a general kneading method. In the present invention, in order to reinforce the thermal stability at the time of biaxial kneading, it is preferable to knead uniformly by gradually adding a small amount of phase change material including a heat stabilizer to the substrate polymer, and the phase change material without microencapsulation with melamine. It is preferable to add and knead as it is during biaxial kneading to enhance the temperature response.

The content of the phase change material in the present invention is preferably 5 to 20% of the matrix polymer in the core component. If the content of phase change material is less than 5%, there is almost no latent heat effect due to phase change. If it is more than 20%, latent heat effect due to phase change is large, but the phase change material is not affected by the cost side problem and kneading with base polymer. When exposed to the outside, it is possible to generate yarns of cystidan or coidan toxicity and problems with coidan toxicity.

On the other hand, in the present invention, as a method for imparting fast sweat absorption and dryness due to capillary phenomenon, the radius consisting of the centrifugal shape from the fiber center direction in the leaf portion of the sheath component portion in Figure 1 (hereinafter referred to as 'central radius') It is preferable that the ratio of R1 and R2, which is the radius of the leaf portion on the vertical trapping degree in the centrifugal direction (hereinafter referred to as the vertical radius), is 3: 5 to 5: 3. When the ratio of R1, which is the centrifugal radius, and R2, which is perpendicular, exceeds 5: 3, the centrifugal / vertical radius becomes too long and the cross section collapses, making cross-section difficult. When the ratio is less than 3: 5, sweat absorption / dissipation due to capillary action The speed drops.

In the present invention, the sheath component portion is a group consisting of aliphatic polyesters such as polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate, copolymers thereof, polylactic acid, polyolefin-based polymers and nylon as the first polymer. A polymer selected from the group 1 is used, and the second component (base polymer) is used as the second component (base polymer). The group is composed of an aliphatic polyester such as polyethylene terephthalate and polylactic acid having a softening point of about 110 to 200 ° C, polyolefin-based and polyolefin-based copolymer Preference is given to polymers of a mixture comprising one polymer or two types of copolymers selected from.

   In the present invention, in the yarn manufacturing method, composite spinning was performed rather than single spinning. In the case of single spinning, the phase change material is more likely to be exposed to the outside, which may cause problems such as dyeing in post-processing such as dyeing. In the case of composite spinning, in order to react sensitively by the interaction of human skin temperature, in the case of sheath-core composite spinning, a nozzle having a core component of 20 to 80 wt% was used, and the core component ratio was less than 20 wt%. If the content of core component is too low, the temperature sensitivity is low. If the ratio of core component exceeds 80% by weight, the content of sheath component is decreased, so that the sheath component is broken, and the phase change material of core component is exposed. May cause staining.

   Features and other advantages of the present invention as described above will become more apparent from the examples and comparative examples described below. However, the present invention is not limited to the following examples. Properties shown in the following Examples and Comparative Examples are measured by the following method.

* Thermal characteristics: The melting point and latent heat of phase change material were measured by Perkin-Elmer differential scanning calorimeter (DSC) at a heating rate of 10 ° C per minute. The large area over the temperature range of the melting peak, as determined by DSC, indicates that the material can absorb, store and release more heat.

* Temperature response: The time taken for the temperature change from 36 ℃ to 33 ℃ was measured by interaction with human skin using a thermal imager.

* Absorption quick-drying: The rate at which artificial urine is absorbed and diffused was measured in time using a Lister urine rate meter. The lower the number, the better the sweat absorption quick-drying.

* Wash resistance: After washing five times at 40 ° C. with a neutral detergent, the temperature responsiveness was measured and compared with the temperature responsiveness value before washing.

Example 1

  Sith-core composite spinning with a ratio of R3, which is the centrifugal radius, and R2, which is vertical radius, is 4: 3, and the ratio of the sheath and core components is 80/20% by weight in order to give fast sweat absorption and dryness. The nozzle was used. Polytetramethylene terephthalate having an intrinsic viscosity of 0.63 dl / g flows through the sheath component nozzle, and a phase change is performed to a modified polyethylene terephthalate having a softening point of 110 ° C and an intrinsic viscosity of 0.60 dl / g. As the substance, a master polymer in which a homogeneously kneaded 10 wt% of an alkylene glycol having a molecular weight of 600 and a copolymer of aliphatic acid as a phase change substance was used. The spinning temperature of the composite spinning was adjusted to 260 ° C in the sheath component and to 240 ° C in the core component, and after spinning with a spinning speed of 3500m / min and an air volume of 6kg / cm2, the stretching roller temperature was 75 ° C and the drawing hot. The plate temperature was adjusted to be 180 ° C. and stretched while oiling with a draw ratio of 3.0 and a hydrophilic emulsion. Meanwhile, the fabric was manufactured by the weaving / reducing processing / color rendering process using the prepared yarn to measure the sweat absorption quick drying and temperature response.

  Example 2

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 70/30 wt%.

 Example 3

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 60/40 wt%.

 Example 4

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 50/50% by weight.

 Example 5

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 40/60 wt%.

Example 6

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 30/70 wt%.

Example 7

  The same procedure as in Example 1 was repeated except that the ratio of the sheath component and the core component was 20/80% by weight.

 Example 8

  The same procedure as in Example 5 was repeated except that the content of the phase change material contained in the master polymer in the core component was 5%.

 Example 9

  The same procedure as in Example 5 was repeated except that the content of the phase change material contained in the master polymer in the core component was 20%.

 Example 10

  The same procedure as in Example 5 was repeated except that the polymer entering the core component was a modified polyethylene terephthalate with a softening point of 130 ° C.

 Example 11

  The same procedure as in Example 5 was repeated except that the polymer entering the core component had a softening point of 150 ° C.

 Example 12

  The same procedure as in Example 5 was repeated except that the polymer entering the core component had a softening point of 180 ° C.

 Example 13

The same procedure as in Example 5 was repeated except that the polymer entering the core component had a softening point of 200 ° C.

 Example 14

  The same procedure as in Example 5 was repeated except that the polymer entering the core component was a polylactic acid, an aliphatic polyester having a melting point of 160 ° C.

 Example 15

  The same procedure as in Example 5 was repeated except that the polymer entering the core component was polyethylene having a softening point of 130 ° C.

 Example 16

   The same procedure as in Example 5 was repeated except that the polymer entering the core component was polypropylene with a softening point of 160 ° C.

Example 17

   The same procedure as in Example 5 was repeated except that the polymer entering the core component was a polyethylene copolymer having a softening point of 100 ° C.

 Example 18

  The same procedure as in Example 5 was carried out except that the substrate polymer of the core component was used as a phase change material in a polypropylene copolymer having a softening point of 100 ° C. and a polyethylene polymer having 10 carbon atoms of 10% homogeneously kneaded master polymer. Repeated.

 Example 19

  The same procedure as in Example 18 except that the substrate polymer of the core component was used as a phase change material in a polypropylene copolymer having a softening point of 160 ° C. and a master polymer of 10% homogeneously kneaded with a polyethylene derivative having 20 carbon atoms as a phase change material. Was repeated.

 Example 20

  The same procedure as in Example 18, except that the substrate polymer of the core component was used as a phase change material in a polypropylene copolymer having a softening point of 160 ° C. and a master polymer obtained by homogeneously kneading 10% of a polyethylene derivative having 22 carbon atoms as a phase change material. Was repeated.

 Comparative Example 1

The same procedure as in Example 5 was repeated except that no phase change material was used.

 Comparative Example 2

  The same procedure as in Example 5 was repeated except that the phase change material was 3% by weight.

 Comparative Example 3

  The same procedure as in Example 5 was repeated except that the phase change material was 25% by weight.

[Comparative Example 4]

  The same procedure as in Example 5 was repeated except that the proportion of the core component was 10% by weight.

[Comparative Example 5]

   The same procedure as in Example 5 was repeated except that the proportion of the core component was 90% by weight.

Comparative Example 6

      The same procedure as in Example 5 was repeated except that the nozzle cross section of the sheath component was circular.

The temperature responsiveness of the artificial intelligence-type high performance composite fiber obtained on the basis of the above Examples and Comparative Examples and durability and lightness according to washing were measured. The results are shown in Table 1.

As will be apparent from the results of Table 1, the composite fiber according to the present invention has a phase change caused by interaction with human skin temperature by the addition of a phase change material in the yarn manufacturing step. The semi-permanent temperature response is provided by maintaining the yarn, and the yarn cross section has a four-leaf cross-section structure, thereby providing an artificial intelligence high-performance composite fiber having excellent quick absorption quick-drying, durability and drape.

Claims (4)

A sheath-core composite fiber having a four-leaf cross-section structure composed of a first polymer in the sheath component and a second polymer in the core component, wherein the polyalkylene glycol-aliphatic acid copolymer having a molecular weight of 500 to 1,000 and a carbon number of 13 to Phase change material containing 23 polyethylene derivatives and phosphorus thermal stabilizer is incorporated in the core component part 5 to 20% by weight compared to the core component part, the ratio of the centrifugal radius (R1) and the vertical radius (R2) of the leaf portion of the sheath component part A four-leaf cross-section artificial intelligence high-performance composite fiber characterized by being 3: 5 to 5: 3. According to claim 1, wherein the phase change material is 5 to 20% by weight of polyalkylene glycol-aliphatic acid copolymer having a molecular weight of 500 to 1,000, 5 to 20% by weight of polyethylene derivative having 13 to 23 carbon atoms and phosphorus thermal stabilizer 1 to 4 leaf cross-section artificial intelligence high-performance composite fiber, characterized in that it contains 3% by weight. According to claim 1, wherein the first polymer is polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate and copolymers thereof, aliphatic polyester such as polylactic acid, polyolefin-based polymer and polyamide The second polymer is any one selected from the group consisting of aliphatic polyester, such as polyethylene terephthalate and polylactic acid, polyolefin-based polymer and polyolefin-based copolymer having a softening point of 110 to 200 ℃ or Four-leaflet AI artificial high-performance composite fiber, characterized in that the mixture containing a copolymer. The four-sided artificial intelligence high-performance composite fiber according to claim 1, wherein the core component portion has a proportion of 20 to 80% by weight.

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