KR101808459B1 - Shaped cross-section fiber with excellent absorption and dry property and wearing resistance and manufacturing process thereof - Google Patents

Abstract

The present invention relates to a method for manufacturing polyester modified cross-section yarn containing PTFE nanoparticles and, more specifically, to polyester modified cross-section yarn with excellent sweat absorbing and rapidly drying properties and wear resistance while having excellent spinning processability by melting and spinning a polyester composition mixed with PTFE nanoparticles in a modified cross-section spinneret.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester cross-section yarn excellent in sweat-absorbent quick drying property and abrasion resistance and a manufacturing method thereof,

The present invention relates to a polyester cross-section yarn containing PTFE nanoparticles excellent in sweat-absorbing quick drying property and abrasion resistance and a method for producing the same, and more particularly, to a polyester cross-section yarn containing PTFE nanoparticles capable of lowering the friction coefficient of a yarn And a manufacturing method thereof. That is, the present invention relates to a polyester modified cross-section yarn which is imparted with quick-drying property sucked by the modified cross-sectional structure of the yarn and which exhibits a low coefficient of friction by the PTFE nano-particles contained in the yarn, and a production method thereof.

Recently, the textile industry has been focusing on improvement of polymerizations and differentiation of yarn cross sections as a part of development of high value-added differentiated materials. Among them, differentiation of the yarn cross-sections is more important than investment cost and investment time The researchers are actively studying this issue because they can have a great effect on the aspect.

In recent years, sports wear market has mainly focused on healthy middle-aged men who are active in self-management, well-being, and participation in sports. However, recently, young women who enjoy sports in their 20s and 30s have moved to the sports population, And athletic style sportswear with a sophisticated sense is required.

The athlete is a compound word of athletic which means exercise and leisure which emphasizes the comfort of daily life and the pleasure of daily rest. The above-mentioned ergele style sportswear has a function of a sportswear and a style that can be worn in everyday life It means stylish sportswear with style that can be directed with other items as well.

Therefore, it reflects the recent trend of enjoying sports and leisure activity in the city, combining the simple and active feeling of sporty look with the functionality of lightweight and breathable outdoor fabric. There is a desperate need for the development of differentiated athletic style sportswear that can be utilized.

In recent years, sweat-absorbent, quick-drying materials that impart a pleasant and refreshing feel to the active materials have been widely spotlighted. For example, in JP-A-2004-218092 and Korean Unexamined Patent Publication No. 2003-0047192, To maximize the pores of the yarn to thereby accelerate absorption and spreading of sweat.

However, most of the existing applied yarn for the comfort of the body such as keeping the body temperature emphasized the sweat-absorbing quick-drying property by using the cross-sectional material. However, recent studies have shown that the moisture remaining in the fabric is the friction coefficient To generate heat due to frictional force in the skin. The heat generated at this time causes sweat from the human body, thereby decreasing the comfort in the clothes. Therefore, there is a desperate need to develop a material that has sweat-absorbent quick drying property capable of absorbing perspiration swiftly generated during the activity of the human body, and can reduce the generation of heat during friction with the skin to improve comfort in clothes.

The present invention has developed a polyolefin cross-section yarn comprising PTFE nanoparticles for the production of differentiated athletic style sportswear, and has excellent wear resistance and sweat-absorbing quick drying property, and low friction coefficient, And a method of manufacturing the same. However, these problems are exemplary and do not limit the scope of the present invention.

In order to solve the above problems, the present invention provides a method for producing a cross-section polyester yarn excellent in sweat-absorbent quick drying property and abrasion resistance, comprising: a first step of mixing a polyester polymer and PTFE nanoparticles to prepare a radiation- A second step of preparing an undrawn yarn which emits the radiation-curable composition through a spinning-section spinneret; A third step of stretching the undrawn yarn to produce a drawn yarn; And a fourth step of winding the drawn yarn.

Further, in the method for producing a polyester modified cross-section yarn excellent in sweat-absorbing quick-drying property and abrasion resistance of the present invention, it is preferable that the diameter of the PTFE nanoparticles is 1,000 nm or less, and the PTFE nanoparticles are mixed in an amount of 1 to 3% desirable

The polyvinyl chloride cross-section yarn comprising the PTFE nanoparticles produced by the present invention is excellent in sweat-absorbing and quick-drying properties to absorb sweat generated in the human body in a short period of time due to the cross-sectional structure of the yarn. Further, the friction coefficient of the yarn is reduced by the PTFE nanoparticles, and the effect of suppressing heat generation due to the frictional force between the fabric and the skin is suppressed. From this, it is possible to develop a next-generation comfortable fiber product that exhibits optimal wear resistance in clothes due to the improvement of abrasion resistance of a textile product, the suppression of sweat generation, and the quick drying function of sucking. In addition, the polyester cross-section yarns including the PTFE nanoparticles of the present invention have excellent radiation properties because they do not cause yarn phenomenon even though they contain PTFE nano-particles inside the yarn.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a method for producing a polyester cross-section yarn comprising PTFE nanoparticles according to the present invention. FIG.
2 is a microphotograph of PTFE nanoparticles of the PTFE dispersion used in the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed exemplary embodiments, but is capable of other various forms of implementation. The following examples are intended to be illustrative of the present invention, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

Hereinafter, a method of producing a polyvinyl chloride cross-section yarn comprising PTFE nanoparticles of the present invention will be described in detail with reference to examples.

In the present invention, a polyester chip mixed with polytetrafluoroethylene (hereinafter referred to as PTFE) nanoparticles as shown in FIG. 2 is spun through a spinneret-shaped spinneret to have excellent fast drying property and abrasion resistance, Thereby producing a polyester modified cross-section yarn having a coefficient of friction.

First, the method for producing a polyester modified cross-section yarn according to the present invention comprises mixing PTFE nanoparticles having a diameter of 1,000 nm or less with a polyester chip so that the content of the PTFE nano-particles is 1 to 3% Forming a polyester composition.

The PTFE nanoparticles are hydrophobic and have a low coefficient of friction. Accordingly, when the PTFE nanoparticles are injected in the spinning step, the wear resistance of the yarn is improved due to the low coefficient of friction of the PTFE nanoparticles, and it is possible to develop a differentiated material with improved comfort in wearing. In addition, the coefficient of friction of the yarn can be lowered to reduce the heat generated when friction occurs between the skin and clothes in the presence of moisture, thereby improving the comfort of the clothes.

That is, the PTFE nanoparticles included in the polyvinyl chloride cross-section yarn lower the friction coefficient of the yarn and reduce the amount of heat generated when the skin and clothes are frictioned. From this, it is possible to reduce the amount of sweat generated during the operation of the human body. Accordingly, it is possible to increase the comfort of the clothes during the activity, and to lower the friction coefficient, thereby increasing the wear resistance of the fibers, so that the clothes can be worn for a long time without deformation.

In addition, the polyester yarn of the present invention is composed of a modified cross section, whereby voids or capillaries are formed in the yarn from the modified cross section. And sucking and quick drying property to absorb and dissipate sweat and moisture due to the capillary phenomenon resulting therefrom, and also has an effect of increasing the comfort of the clothes.

As such, the fibers having a modified cross-section absorb the moisture physically faster by the capillary formed between the fibers, and also quickly discharge. That is, the capillary absorbs the moisture on the surface quickly, and the moisture on the surface first evaporates, and the moisture in the inside evaporates sequentially, thereby exhibiting a sweat-absorbing quick-drying function. The fiber material with excellent sweat-absorbing and quick-drying function absorbs moisture well and dries quickly so that the environment in the clothing can always be kept in a pleasant condition.

In the present invention, the cross-sectional shape of the polyester-modified cross-section yarn can be any shape such as a triangular cross-section, a flat cross-section, or a cross-shaped cross-section.

Most of the existing yarns for comfort in clothing were manufactured considering sweat - absorbing and quick - drying properties using mostly cross - section. However, recent research has shown that the moisture remaining in the fabric increases the coefficient of friction between the clothing and the skin, generating heat by friction between the skin and clothing. The heat thus generated causes sweat from the human body, causing discomfort in the clothes and lowering the comfort. Therefore, in order to improve the comfort in the clothes, it is necessary to reduce the friction coefficient of the yarn as well as the quick drying property of the yarn to suppress the generation of frictional heat and to reduce the occurrence of sweat.

Accordingly, the polyester modified cross-section yarn comprising the PTFE nanoparticles of the present invention exhibits sweat-resistant quick-drying property due to the modified cross-section. In addition, the modified cross section yarn including the PTFE nanoparticles has a low coefficient of friction due to the PTFE nano-particles, and since the PTFE is a hydrophobic substance, the wicking property of the fibers is increased. In addition, since the coefficient of friction between the skin and the skin of the wearer is lowered during the activity of the human body, heat generation due to frictional force on the skin is blocked, thereby suppressing the occurrence of sweat. Thus, do.

Hereinafter, a method for producing a polyester cross-section yarn including the PTFE nanoparticles of the present invention will be described in more detail.

First, in the present invention, in order to produce a polyvinyl chloride cross-section yarn including PTFE nano-particles, a regular polyester chip which is a raw material of polyester fiber and a regular polyester chip which does not react chemically with the regular polyester chip but has a diameter of 1,000 Nm or less of PTFE nano powder is mixed with 1 to 3 wt% of the above-mentioned regular polyester chips to form a polyester composition.

If the diameter of the PTFE nano-powder particles contained in the polyester composition is more than 1,000 nm to provide abrasion resistance to the polyester fiber, the diameter of the PTFE nano-powder particles is large, .

If the content of the PTFE nano powder contained in the polyester composition is less than 1% by weight, the effect of reducing the friction coefficient of the polyester fiber is insufficient, so that the abrasion resistance is not sufficiently exhibited. Since the PTFE nano powder is very expensive, if the content of the PTFE nano powder exceeds 3 wt%, the manufacturing cost of the polyester fiber is increased.

Since the PTFE nano powder does not chemically react with the polyester polymer, deterioration due to the chemical reaction does not occur in the polyester polymer. In addition, even if the polyester composition prepared as described above is applied to the spinning process, the physical properties of the polyester polymer due to the PTFE nano powder do not occur.

In addition, the method for producing a polyester modified cross-section yarn of the present invention includes the step of melting and spinning the polyester composition in a spinning spinning spinneret to produce an unstretched yarn having a modified cross-section. The modified cross-sectional shape of the yarn may be any known shape such as a triangular cross-section, a flat cross-section, or a cross-shaped cross-section.

In addition, the method for producing a polyester modified cross-section yarn of the present invention includes the step of stretching the above-mentioned modified cross-section undrawn yarn to form a modified cross-section stretched yarn. The above-prepared spinning non-stretched polyester non-drawn yarn was extruded from a plurality of stretching rollers (for example, a first stretching roller having a temperature of 85 캜 and a speed of 2,000 m / min and a temperature of 125 캜 at a speed of 4,000 m / Second stretching roller), or other known stretching method to form a stretched cross-sectionally stretched cross-section, and the stretched cross-section stretch yarn is wound on a roll to obtain a polyester cross-section including the PTFE nanoparticles of the present invention Lt; / RTI >

In addition, the method for producing a polyester modified cross-section yarn of the present invention may further include the step of coating the surface of the above-mentioned cross-section stretched yarn with an emulsion. In order to protect the surface of the stretched cross-section stretched yarn thus stretched and improve the feel, it is preferable to coat the surface of the stretched cross-section stretch yarn with an emulsion. That is, it is possible to produce a polyester modified cross-section yarn containing PTFE nanoparticles with improved quality and added value by coating an emulsion on the surface of a cross-section stretched yarn by a known method such as a metering lubrication method or a roller lubrication method will be.

However, the PTFE nano powder as described above has a very large surface area, has a large cohesive force between particles, and is very difficult to disperse, and a long time is required for uniform dispersion. When a polyester polymer in which the PTFE nano powder is not uniformly dispersed is injected into a radiator and radiated, the radiations such as yarn are poor.

Therefore, in another embodiment of the present invention, in order to facilitate mixing of the PTFE nanoparticles and the polyester polymer, the PTFE nanoparticles and the polyester polymer are mixed using a dispersion in which PTFE nanoparticles other than the PTFE nanoparticles are dispersed in water Method can be used.

As described above, a method for producing a polyester modified cross-section yarn using a dispersion in which the PTFE nanoparticles of the present invention are dispersed in water is produced through the following steps as shown in FIG.

1) Coating Step: A predetermined amount of a regular polyester chip which has been polymerized and dried is prepared and metered, and then a dispersion in which the PTFE nano-particles are dispersed in water is sprayed while agitating the regular polyester chips. Through the spraying process, the dispersion liquid in which the PTFE nano-particles are dispersed on the surface of the regular polyester chip is adsorbed. At this time, when the regular polyester chips on which the PTFE nano-particles are adsorbed are continuously stirred, heat of 80 to 100 ° C is generated due to friction of the chip-shaped polyester. From the generated heat, moisture is evaporated from the PTFE nanoparticle dispersion adsorbed on the surface of the regular polyester chip, and the primary drying proceeds. The above primary drying produces a polyester chip in which PTFE nanoparticles are uniformly coated on the surface of a regular polyester chip. .

The dispersion in which the PTFE nanoparticles are dispersed in water is usually disclosed in terms of the diameter and the content of the PTFE nanoparticles. Therefore, it can be suitably selected according to the diameter and the composition ratio of the desired PTFE nanoparticles. The dispersion in which the PTFE nanoparticles are dispersed in water may contain some nonionic surfactant and stabilizer.

2) Master batch production step: The polyester chip coated with the PTFE nanoparticles on the surface and, if necessary, a polyester chip are further added to carry out the compounding process. If necessary, second drying may be performed to remove moisture from the polyester chips coated with PTFE nanoparticles on the surface before the compounding step. A polyester master batch in which the PTFE nanoparticles are uniformly mixed is prepared by the compounding process. At this time, it is possible to appropriately adjust the amount of the polyester chips to be added in order to control the amount of the PTFE nanoparticles contained in the master batch.

3) Fiber Formation Step: The polyester masterbatch produced as described above is put into a spinning device equipped with a spinneret-shaped spinneret and melt-spun. Then, after being stretched and wound, the polyvinyl chloride cross-section yarn excellent in sweat-absorbent quick dry property and abrasion resistance of the present invention is completed.

In order to measure the physical properties of a fabric produced using the polyester modified cross-section yarn comprising PTFE nanoparticles, the size and composition ratio of the PTFE nanoparticles as in Comparative Examples 1 to 3 or Examples 1 to 12 , And a test piece was prepared from the polyester cross-section yarn.

<Comparative Example 1 and Example 1-4>

Comparative Example  One

A regular polyester composition not containing PTFE nanoparticles having a diameter of 250 nm was melted at 290 DEG C in a cross-shaped cross-section spinneret and spinning at a rate of 4,000 m / min to prepare a cross-shaped cross-section undrawn filament. The cruciform shaped non-drawn filaments were stretched by a first stretching roller having a temperature of 85 ° C and a speed of 2,000 m / min and a second stretching roller having a temperature of 125 ° C and a speed of 4,000 m / min to form a cross- , And the cross-linked cross-linked drawn yarn was wound on a roll to produce a polyester modified cross-section yarn of 75d / 72f. Thereafter, the fabric was weighed in a plain weave having a warp density of 120 yarns / inch and a weft density of 60 yarns / inch and used as a test piece.

Example  1-4

By spraying the PTFE nanoparticles with a diameter of 250 nm on a regular polyester chips dispersion comprising 60% by weight, stirring the ^{(Algoflon? PTFE Dispersion D 1610 F} , Solvay) and evaporated water through the primary drying is performed by coating. Thereafter, the polyester masterbatch was further dried to remove moisture, and then a polyester master batch containing the PTFE nano particles having a diameter of 250 nm as 1, 2, 3, and 5 wt% was prepared through a compounding process. Thereafter, polyester cross-section yarns were produced in the same manner as in Comparative Example 1, and the test pieces were woven and used.

&Lt; Comparative Example 2 and Example 5-8 >

Comparative Example  2

A polyester composition not containing PTFE nanoparticles having a diameter of 500 nm was prepared and then a test piece was prepared in the same manner as in Comparative Example 1. [

Example  5-8

Using the dispersion ^(Algoflon? PTFE Dispersion D 2512 F, Solvay) containing the PTFE nanoparticles with a diameter of 500 nm 60% by weight and the remainder was used to weave a test piece in the same manner as in Example 1-4.

&Lt; Comparative Example 3 and Example 9-12 >

Comparative Example  3

A polyester composition not containing PTFE nanoparticles having a diameter of 1,000 nm was prepared, and then a test piece was prepared in the same manner as in Comparative Example 1.

Example  9-12

Using the dispersion ^(Algoflon? PTFE Dispersion D 3511 F, Solvay) containing 60% by weight of the PTFE nanoparticles with a diameter of 1,000 nm and the other was used to weave a test piece in the same manner as in Example 1-4.

The properties of woven fabric, wicking property, friction coefficient, abrasion resistance and yarn resistance were evaluated by the following methods.

1) Wicking Castle

The wicking property is measured by the B method (Birek method) of KS K 0815. That is, a sample was prepared in the form of a strip having a size of 20 cm × 2.5 cm, and the wicking length (mm) after 10 minutes was measured after one end of the sample was immersed in a water bath containing 27 ± 2 ° C. distilled water.

2) Coefficient of friction

A test piece was prepared in accordance with ASTM D 1894 (Standard Test Method for Static and Kinetic Coefficients of Fraction of Plastic Film and Sheeting) and the coefficient of friction of the test piece was measured in the tester.

3) Abrasion resistance

The abrasion resistance of the fabric is measured according to KS K 0815. In other words, the test piece is prepared by the method specified in KSK 0815, and the number of rotation cycles at the point where holes are formed in the test piece through the friction between the test piece surface and the wear wheel due to the rotation motion of the fabric test piece under the specified load condition . When no holes are generated after 50,000 cycles of rotation under the above-described test conditions, it is judged as good, and when holes are generated in the cycles below that, holes are evaluated as defective.

4)

The yarn splicing was evaluated as the number of occurrences of yarn breakage per hour in the melt spinning of the cross-section polyester yarn of the present invention. It was judged as good when the yarn was not generated during 1 hour of melt spinning, when the yarn occurred 1 to 2 times, it was judged to be bad when the yarn was more than 2 times.

The properties of the polyester cross-section yarns prepared according to the above-described Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

PTFE Size PTFE composition
(weight%) Wicking
(mm) Coefficient of friction Abrasion resistance Junior copper tablet Comparative Example 1 250 nm 0 60 0.22 0.28 Bad Good Example 1 One 63 0.15 0.18 Good Good Example 2 2 65 0.14 0.16 Good Good Example 3 3 70 0.11 0.14 Good Good Example 4 5 72 0.10 0.13 Good usually Comparative Example 2 500 nm 0 61 0.25 0.31 Bad Good Example 5 One 63 0.18 0.22 Good Good Example 6 2 65 0.15 0.21 Good Good Example 7 3 66 0.12 0.15 Good Good Example 8 5 68 0.12 0.14 Good usually Comparative Example 3 1,000 nm 0 60 0.32 0.36 Bad Good Example 9 One 62 0.23 0.25 Good Good Example 10 2 63 0.21 0.23 Good Good Example 11 3 64 0.16 0.18 Good Good Example 12 5 66 0.15 0.17 Good Bad

As shown in Table 1, it can be seen that the wicking height of the fabric including PTFE nanoparticles having diameters of 250 nm in Examples 1 to 4 is increased compared to Comparative Example 1. [ That is, as the composition ratio of the PTFE nanoparticles increases, the wicking height gradually increases, which indicates that the wicking height of the test piece increases due to the PTFE nanoparticles and the modified cross-section included in the polyester yarn. From the results of evaluation of wicking property, it can be confirmed that quick drying property sucked by PTFE nanoparticles is also increased.

In the case of Example 4 in which the composition ratio of the PTFE nanoparticles is 5 wt%, it can be confirmed that the spinnability is reduced somewhat by being generated once during 1 hour during melt spinning.

As to the friction coefficient of the test piece, the coefficient of dynamic friction of the test piece in Comparative Example 1 was 0.22, and the coefficient of static friction was 0.28. However, it can be seen that as the composition ratio of the PTFE nano-particles contained in the yarn gradually increases in Examples 1 to 4, the dynamic friction coefficient and the static friction coefficient of the test piece gradually decrease.

Also, the test piece of Comparative Example 1, which did not contain PTFE nano-particles, was judged to be defective when the test piece was rotated 40,000 cycles during the measurement of abrasion resistance, resulting in a hole. However, in the case of the test pieces of Examples 1 to 4 containing PTFE nanoparticles, no holes were generated until the test piece was rotated 50,000 cycles. As a result, the wear resistance of Examples 1 to 4 was judged to be satisfactory. That is, as the content of the PTFE nanoparticles in the polyester yarn is increased, the friction coefficient is gradually reduced, and thus the wear resistance of the fabric is improved. When the PTFE nano-particles are contained in an amount of 5% by weight, the deceleration width of the friction coefficient is somewhat reduced.

The wicking property and the coefficient of friction were somewhat improved in the case of Examples 4, 8 and 12 containing 5 wt% of PTFE nanoparticles, as compared with the case of containing 1 to 3 wt% of PTFE nanoparticles. However, in the case of Examples 4, 8 and 12 in which the PTFE nanoparticles were contained in an amount of 5 wt%, occurrence frequency of the embroidery was increased. Therefore, as the content of the PTFE nano-particles increases, the cost competitiveness of the yarn is lowered. Therefore, considering the physical properties such as radioactivity and the price competitiveness of the yarn, the PTFE nano- It is most efficient when included.

In the case of Examples 5 to 8 and Comparative Example 2 including PTFE nanoparticles having a size of 500 nm and in Examples 9 to 12 and Comparative Example 3 including PTFE nanoparticles having a size of 1,000 nm, The same or similar results can be confirmed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (5)

The PTFE nanoparticles are adsorbed on the surface by spraying a dispersion in which the PTFE nanoparticles are dispersed in water on the polyester chips which have been polymerized and dried, and then the polyester chips adsorbed on the surface of the PTFE nanoparticles are stirred and dried to coat the PTFE nanoparticles , The PTFE nanoparticles being adsorbed at 1 to 3 wt%;
A second step of preparing an undrawn yarn which emits the radiation-curable composition through a spinning-section spinneret;
A third step of stretching the undrawn yarn to produce a drawn yarn;
A fourth step of winding the drawn yarn;
Wherein the fastness to sweat and the abrasion resistance are excellent.
The method according to claim 1,
Wherein the PTFE nanoparticles have a diameter of 1,000 nm or less, wherein the PTFE nanoparticles have a sweat-absorbent quick dry property and a high abrasion resistance.
delete A polyester-modified cross-section yarn excellent in sweat-absorbent quick drying property and abrasion resistance produced by the method of claim 1 or 2.
As a sports apparel having improved comfort,
A sports clothing manufactured by using the polyester cross-section yarn excellent in sweat-absorbent quick drying property and abrasion resistance of claim 4

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