KR101045387B1 - Polyester fiber having uv blockingproperty and flame retardant, and manufacturing method thereof - Google Patents

Abstract

The present invention is a polyester fiber composed of a core portion and a sheath portion, wherein the core portion is formed of a polyester-based resin containing inorganic compounds such as zinc oxide and titanium oxide that block ultraviolet rays, and the sheath portion contains a phosphorus flame retardant. It relates to a polyester fiber formed of a polyester-based resin and excellent in UV protection and flame retardant performance, and a method for producing the same.

Polyester, UV, Flame Retardant, Inorganic Compound

Description

Polyester fiber with excellent UV protection and flame retardant performance and manufacturing method thereof {POLYESTER FIBER HAVING UV BLOCKING PROPERTY AND FLAME RETARDANT, AND MANUFACTURING METHOD THEREOF}

The present invention is formed of a polyester-based resin containing an inorganic compound that blocks the ultraviolet rays in the core portion and the sheath portion is formed of a polyester-based resin containing a flame retardant functional polyester fiber excellent in UV protection and flame retardant performance and a method of manufacturing the same It is about.

Generally, synthetic fibers that block ultraviolet rays synthesize additives that impart the ability to absorb or shield ultraviolet rays, such as organic compounds such as benzotriazole and benzophenone or inorganic compounds such as zinc oxide, titanium oxide, talc, and carolin. It was included in the fiber to block ultraviolet rays.

The organic compounds such as benzotriazole and benzophenone have excellent ultraviolet absorbing ability, but have high melting points and melt kneading into thermoplastic resins such as thermal stability, sublimation resistance, and compatibility. In addition, since the absorption is extremely large in the visible light wavelength region, the use of them is limited to the case where high concentration coloring is allowed, and care must be taken because the product itself or the product generated during decomposition may be a skin disorder or the like. Therefore, in order to exhibit an ultraviolet shielding effect, a method of adding and using inorganic compounds such as titanium oxide, zinc oxide, talc, and kaolin has been commonly used.

In Japanese Patent No. 3053248, "Polyester Composition Having Ultraviolet Ray Shielding Performance, Manufacturing Method and Fiber of the Polyester Composition", contains 1 to 10 wt% of zinc oxide and titanium oxide having an average particle size of 0.1 to 3.0 µm in polyester. To propose a polyester having a UV shielding performance. The above patent discloses that when the fiber is produced from polyester, the filter is clogged or trimmed because the invention is uniformly dispersed in the form of fine particles without aggregation of titanium oxide and zinc oxide particles by adding a specific compound during polymerization. It is proposed that the fiber having excellent ultraviolet shielding performance can be stably produced without this occurrence, and that the same effect can be obtained in the manufacture of the film in addition to the fiber. Problems such as guide abrasion caused by high concentration of zinc oxide and titanium oxide, generation of pim yarn of yarn and poor workability when passing through the guide in the weaving preparation process, such as twisting and sizing, have been pointed out.

In addition, UV-resistant synthetic fibers are widely used in interior applications such as curtains and blinds, or industrial covers such as automobile covers, so they should have flame retardant performance in case of emergencies. However, conventional UV-shielded synthetic fibers have very limited use because they are not flame retardant. There was a problem.

The present invention is to solve the above problems, the polyester fiber is formed of a core portion and the sheath portion, and the core portion in the center includes an inorganic compound that blocks the ultraviolet rays, give the UV blocking effect and take over the sheath portion of the surface It aims at providing the polyester fiber which included the flame retardant and provided flame retardance.

In addition, since it is made of polyester fiber, UV protection and flame retardant performance that can be applied not only for clothing but also for various applications such as interior products such as wallpaper, blinds, curtains, furniture, building materials, automobile interior materials etc. that require UV protection and flame retardancy. It is an object to provide this excellent polyester fiber and its production method.

In addition, an object of the present invention is to provide a fabric such as woven fabrics, knitted fabrics, etc. using polyester fibers having excellent UV protection and flame retardant performance.

The present invention is a polyester fiber composed of a core portion and a sheath portion, wherein the core portion is formed of a polyester-based resin containing an inorganic compound that blocks ultraviolet rays, the sheath portion is formed of a polyester-based resin containing a phosphorus-based flame retardant It provides a polyester fiber excellent in UV protection and flame retardant performance, characterized in that.

In addition, the inorganic compound is used as a mixture of zinc oxide or titanium oxide or zinc oxide, titanium oxide and the particle size is 1.0 ~ 5.0㎛ that the core part 1-15% by weight of the inorganic compound in the polyester resin Provided is a polyester fiber having excellent ultraviolet protection and flame retardant performance.

In addition, the phosphorus-based flame retardant is to be a formula (2) below provides a polyester fiber excellent in UV protection and flame retardant performance, characterized in that the phosphorus atom (P) is contained in the sheath polyester resin of 500ppm to 15,000ppm.

[Formula 2]

Provided that R ₁ and R ₂ are methyl, phenyl, halophenyl, alkyl, haloalkyl or haloaryl.

The present invention also provides a polyester fiber having excellent UV protection and flame retardant performance, wherein an antioxidant, an antibacterial agent, a deodorant, a fluorescent brightener, and a polymerization reaction stabilizer are added to the sheath portion or the core portion or the sheath portion and the core portion.

In addition, the polyester fiber is a sectional cross-section of the rectangular, triangular, Y-shaped, flat, island-like, split type, the sheath portion to the core portion in the cross-sectional ratio of 20: 80 to 80: 20 And polyester fibers having excellent flame retardant performance.

In addition, the polyester fiber is a polyester fiber excellent in UV protection and flame retardant performance, characterized in that the strength of 2.0 ~ 7.0g / d, elongation 10 ~ 80%, elongation deviation 0 ~ 20.0%, specific value 3.0 ~ 20.0% to provide.

In addition, it provides a fabric characterized in that it contains the polyester fiber.

In addition, the method for producing a polyester fiber comprising a core portion and a sheath portion, the polymerization step of polymerizing a flame-retardant polyester resin copolymerized with a polyester-based resin containing an inorganic compound that blocks ultraviolet rays and a phosphorus-based flame retardant; A drying step of drying each polyester-based resin that has passed through the polymerization step; Melting step of melting the polyester-based resin containing the inorganic compound to block the dried ultraviolet rays at 260 to 330 ℃, and melting the polyester-based resin containing a phosphorus flame retardant at 250 to 320 ℃; Spinning step of producing a polyester fiber by complex spinning the melt passed through the melting step at a temperature of 250 to 320 ℃; It provides a method for producing a polyester fiber excellent in UV protection and flame retardant performance, characterized in that it is prepared, including the heat-setting and stretching step of stretching the spun polyester fiber while heat-setting.

In addition, the inorganic compound is used as a mixture of zinc oxide or titanium oxide or zinc oxide, titanium oxide and the particle size is 1.0 ~ 5.0㎛ that the core part 1-15% by weight of the inorganic compound in the polyester resin Provided is a method for producing a polyester fiber having excellent ultraviolet protection and flame retardant performance.

In addition, the phosphorus-based flame retardant is the formula (2) below to produce a polyester fiber excellent in UV protection and flame retardant performance, characterized in that the phosphorus atom (P) is contained in the polyester resin of the sheath portion 500ppm to 15,000ppm Provide a method.

[Formula 2]

Provided that R ₁ and R ₂ are methyl, phenyl, halophenyl, alkyl, haloalkyl or haloaryl.

In addition, the polyester fiber is a sectional cross-section of the rectangular, triangular, Y-shaped, flat, island-like, split type, the sheath portion to the core portion in the cross-sectional ratio of 20: 80 to 80: 20 And it provides a method for producing a polyester fiber excellent in flame retardant performance.

In addition, the stretching step provides a method for producing a polyester fiber excellent in UV protection and flame retardant performance, characterized in that stretching at a draw ratio of 1.5 to 5.0.

In addition, the polyester fiber produced by the above production method has a strength of UV protection and flame retardant, characterized in that the strength is 2.0 ~ 7.0g / d, elongation 10 ~ 80%, elongation deviation 0 ~ 20.0%, specific value 3.0 ~ 20.0% It provides a method for producing this excellent polyester fiber.

In addition, there is provided a fabric comprising a polyester fiber produced by the above production method.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

As used herein, the terms "about", "substantially", and the like, are used at, or in close proximity to, numerical values as are indicative of the manufacturing and material tolerances inherent in the meanings mentioned, Absolute figures are used to prevent illegal unfair use of unscrupulous infringers.

The present invention is a polyester fiber having excellent UV protection and flame retardant performance, consisting of a core part and a sheath part, wherein the core part is formed of a polyester-based resin containing an inorganic compound that blocks ultraviolet rays, and the sheath part is phosphorus-based. It is formed of a polyester resin containing a flame retardant.

As the inorganic compound contained in the core portion, zinc oxide or titanium oxide may be used, or a mixture of zinc oxide and titanium oxide may be used.

The zinc oxide and titanium oxide absorbs ultraviolet rays and has good infrared reflection, and not only ultraviolet rays but also infrared rays. The zinc oxide and titanium oxide are contained in the polyester resin as a white pigment, which reduces the light transmittance of the polyester resin, thereby enhancing the anti-glare effect. .

The particle size of the inorganic compounds of zinc oxide and titanium oxide is preferably 1.0 to 5.0 μm, and more preferably inorganic particles having a particle size of 2.0 to 3.0 μm.

The core portion preferably contains 85 to 99% by weight of the polyester resin and 1 to 15% by weight of the inorganic compound. If the content of the inorganic compound is less than 1.0% by weight, it does not have the effect of UV protection and anti-impregnation (impermeable). If the content is more than 15% by weight, it is difficult to control the process during polymerization and the excessive inorganic compounds are aggregated together. Blockage of spinnerets occurs, or trimming occurs, resulting in poor radioactivity.

The phosphorus flame retardant of the cis part may be a phosphorus flame retardant that is commonly sold, but it is to use a hydroxyphosphinylpropanoic acid derivative of the formula Would be preferred.

[Formula 1]

[Formula 2]

Provided that R ₁ and R ₂ are methyl, phenyl, halophenyl, alkyl, haloalkyl or haloaryl.

The phosphorus-based flame retardant should contain 500 to 15,000 ppm of phosphorus atom (P) in the polyester resin, and preferably contain 3,000 to 10,000 ppm.

If the content of the phosphorus-based flame retardant is less than 500ppm does not have a flame retardant performance, if more than 15,000ppm the yellowing phenomenon of the color change of the polymer chip produced after the polymerization is increased. In addition, since the main chain of the flame retardant is mostly composed of a single bond, when an excessive amount of the flame retardant is contained, the ratio of the amorphous region increases due to the flame retardant, which may cause a problem of strength deterioration.

An additive such as an antioxidant, an antibacterial agent, a deodorant, a fluorescent brightener, a polymerization stabilizer, or the like may be added to the sheath portion or the core portion.

In addition, the polyester resin used in the sheath portion or the core portion should be 80 mol% or more of the constituent units of the polyester, preferably 90 mol% or more using a polyester resin of polyethylene terephthalate unit The melting temperature is preferably 200 ° C. or higher for spinning stability.

Polyester fiber having excellent UV protection and flame retardant performance according to the present invention, as shown in Figures 2 to 7, depending on the use as a cross-section, such as circular, square, triangular, Y-type, flat, islands, split type It can manufacture.

The polyester fiber may be used to manufacture a woven or knitted fabric, which may be used in various industrial fields.

According to the present invention, a method for producing a polyester fiber having excellent UV protection and flame retardant performance may include a polymerization step, a drying step, a melting step, a spinning step, a heat setting step and a stretching step of a core part and a sheath part as shown in FIG. 1. Are manufactured.

In the polymerization step, a polyester-based resin containing 1 to 15% by weight of an inorganic compound such as zinc oxide or titanium oxide and a phosphorus-based flame retardant is added to be copolymerized by adding 500 to 15,000 ppm of phosphorus-based flame based on phosphorus atoms. It is a step of polymerizing.

The drying step may be a pre-drying and the main drying step to dry each of the polymerized polyester-based resin, the pre-drying of about 2 to 6 hours at 100 to 140 ℃, 4 at 140 to 170 ℃ It proceeds to the main drying step to dry for 8 hours, which is to pre-crystallize the surface of the polymer by pre-drying to prevent the polymers from sticking together to form agglomerates when rapidly added to a high temperature.

In the melting step, each of the dried polyester resins is melted in a melt extruder to melt a polyester resin containing an inorganic compound that blocks ultraviolet rays at 260 to 330 ° C., and contains a polyester flame retardant. The resin is melted at 250 to 320 ° C.

The melt passed through the melting step should have a residence time of 30 minutes or less in order to prevent spin operation and viscosity decrease. When the residence time of the polyester resin of the core part and the sheath part is increased due to the complex spinning, there is a concern that a drop in viscosity due to thermal decomposition (IV drop) may occur.

In the spinning step, each of the melts produced in the melting step is composite spinning at a temperature of 250 to 320 ℃ to produce a polyester fiber.

The heat setting and stretching step is 600 to 2,000mpm in the first gourd roller, the first heat setting at 60 ~ 120 ℃, the second heat set at a speed of 3,000 to 5,000 mpm, temperature 90 to 150 ℃ in the second gouging roller Stretching while

After the melting process, before the heat-setting and stretching step may be carried out an emulsion supply step of supplying an emulsion to the polyester fiber for smooth stretching and winding. The emulsion supply step may be a guide emulsion injection method or an oil roller method installed in the solidification area, it may be used any of the two methods.

The stretching step is the first heat setting at 600 to 2,000mpm, 60 to 120 ℃ in the first goth roller (Godet Roller), the second heat setting at a speed of 3,000 to 5,000 mpm, temperature 90 to 150 ℃ in the second goggle roller If the speed of the primary high-speed roller is less than 600mpm in the stretching step, there may be a change in the properties of the yarn over time, there is a fear that the stable operation is difficult due to the lack of force to enter the primary high-speed roller, 2,000mpm If it exceeds, there is a fear of raising or cutting off.

In addition, if the primary heat setting temperature is less than 60 ℃, the heat setting temperature is too low, there is a fear that the sufficient orientation of the molecular chain by stretching does not occur, while if the primary heat setting temperature exceeds 120 ℃, There is a risk of trimming when stretching due to increased tremor.

The second high-speed roller speed is preferably 3,000 to 5,000, but more preferably 3500 to 4500mpm is most stable considering the spinning operation. When the secondary high-speed roller speed is less than 3,000mpm, the properties of the spun yarn, in particular, the elongation is lowered and the productivity is lowered. When the secondary high-speed roller speed exceeds 5,000mpm, there is a fear of yarn shaking in the apostle. In order to increase the speed difference between the second roller roller and the take-up machine, there is a possibility that trimming occurs and the stability of the yarn cake form deteriorates.

In addition, when the secondary heat setting temperature is less than 90 ° C., there is a possibility that a change in physical properties such as elongation with time may occur. If the temperature exceeds 150 ° C., noise may increase on a high-speed roller and stable operation may be difficult.

In the drawing step, the drawing ratio is preferably 1.5 to 5.0, and when the drawing ratio is less than 1.5, there is a fear that the elongation of the fiber is lowered. When the drawing ratio exceeds 5.0, there is a concern that trimming may occur during spinning or defects may occur in the final yarn. have.

The stretched polyester fiber will preferably be wound at 3,000 to 5,000 mpm.

In the polyester fiber having excellent UV protection and flame retardant performance according to the present invention, the stretching ratio, heat setting temperature and final spinning speed of the spinning and stretching steps are important factors affecting the final physical properties of the fiber. It is preferable that the elongation deviation is 0 to 20.0% and the specific number value is 3.0 to 20.0%.

In addition, by controlling the tension before spinning, stretching and winding uniformly to manage the fiber elongation deviation to the minimum, the fiber is managed stably through the elongation deviation, and then in the post-process such as weaving, weakness of the pharmacist or yarn The same problem is less likely to occur.

Therefore, the lower the elongation deviation is possible to produce a yarn having a stable physical properties, the less than 1.0% of the elongation deviation is the result of the ideal spinning, if it exceeds 20.0% is a factor of the trimming in the spinning process, It may also be a factor that reduces trimming and operation rate in post-processing such as weaving, twisting yarn, canon, and weaving.

In addition, the non-aqueous value is to give the appropriate shrinkage by controlling the shrinkage by the fiber yarn prepared through the present spinning process, the dyeing, processing, etc. in advance as a corresponding measurement, preferably 3% to 20% level. When the non-numerical value is less than 3%, there is a concern that the axis does not enter the fabric during processing after weaving, and if the ratio exceeds 20%, the axis may be excessively entered.

If the ratio of the fiber cross-sectional area of the core portion in the present invention is less than 20%, it is not possible to efficiently exhibit the ultraviolet ray blocking and anti-reflective performance to be implemented in the present invention, on the contrary, if it is 80% or more, the thickness of the sheath portion is thinned, so that yarn spinning causes yarn defects. And problems such as poor workability and yarn burst due to metal and guide contact in the weaving and weaving preparation process, so that the ratio of the cross-sectional area of the sheath portion to the core portion is 20:80 to 80:20. .

Fabrics, such as woven fabrics, knitted fabrics, etc., prepared using the polyester fiber according to the present invention can be widely used in various industrial fields because of excellent flame retardancy and UV-blocking effect.

The present invention is a polyester fiber composed of a sheath portion and a core portion, wherein the sheath portion exposed to the surface is formed of a polyester resin containing a phosphorus flame retardant, the core portion of the fiber is zinc oxide, titanium oxide, etc. to block ultraviolet rays It is formed of a polyester-based resin containing an inorganic compound of the effect of providing a polyester fiber excellent in UV protection and flame retardant performance.

In addition, it may be used in various applications such as interior products, such as wallpaper, blinds, curtains, furniture, building materials, automotive interior materials, etc., which are not only for clothing but also for UV protection and flame retardancy by being manufactured from polyester fibers.

Hereinafter, the present invention will be described in detail by examples.

The following examples are merely to illustrate the invention, the scope of the invention is not limited to the following examples.

1. Examples and Comparative Examples

Example 1

As described in detail, the area ratio of the sheath portion occupies 60% by using a conventional spin draw composite spinning apparatus having two rollers. The core part was a polyester resin containing 7% by weight of titanium oxide having an average particle diameter of 3.0 μm, and the sheath part was a copolymerized polyester resin containing 6,000 ppm of phosphorus-based flame retardant of formula (2) based on phosphorus atoms during polyester polymerization. Used. Spinneret detention was used to make the fiber cross section circular, and after spinning at spinning temperature of 284 ℃, oil was attached using oil roller, and at the first high speed roller speed of 1200mpm and 91 ℃ in the heat setting and stretching process The first heat setting was performed, and the second heat setting was performed at a speed of 4,000mpm at a second gourd roller at a temperature of 125 ° C, and stretched at a drawing ratio of 3.33, followed by a winding at 3,915mpm. Thus, a polyester composite fiber of 40 denier / 24 filaments was obtained.

Example 2

The area ratio of the core part was 80%, and the core part was made of a polyester resin containing 5% by weight of titanium oxide having an average particle diameter of 3.0 µm. A polyester resin copolymerized with addition of 10,000 ppm was used. Except this, it manufactured similarly to Example 1 and obtained the polyester composite fiber of 40 denier / 24 filament.

Example 3

Spinnerets were used to form a triangular fiber cross section, except that this was prepared in the same manner as in Example 1 to obtain a polyester composite fiber of 40 denier / 24 filaments.

Example 4

After cooling, the stretching process is performed by the first heat setting at speed 1300mpm and 89 ℃ on the first high speed roller, and the second heat setting at speed 4,000mpm and temperature 123 ℃ on the second high speed roller, stretching to 3.08 and stretching ratio 3,910 Winding process in mpm. A polyester composite fiber of 75 denier / 24 filaments was obtained in the same manner as in Example 1 except this.

Comparative Example 1

The area ratio of the core portion was 20%, except that this was prepared in the same manner as in Example 1 to obtain a polyester composite fiber of 40 denier / 24 filaments.

Comparative Example 2

A polyester polymer containing 1.0 wt% of titanium oxide having an average particle diameter of 3.0 µm in the core part was used, except that this was prepared in the same manner as in Example 1 to obtain a polyester composite fiber having 40 denier / 24 filaments.

Comparative Example 3

A polyester polymer copolymerized by adding 500 ppm of phosphorus-based flame retardant of formula (2) to the cis part in the case of polyester polymerization was used. Except this, it manufactured similarly to Example 1 and obtained the polyester composite fiber of 40 denier / 24 filament.

Comparative Example 4

The heat treatment and stretching step is performed by the first heat fixation at the speed 600mpm and 89 ℃ on the first gourd roller, the second heat setting at the speed 4,000mpm and the temperature 123 ℃ on the second gourd roller, and stretched to draw ratio 6.67 and then 3,900 It proceeded to the winding step in mpm, except for this was prepared in the same manner as in Example 1 to obtain a polyester composite fiber of 40 denier / 24 filaments. However, the number of trimming due to problems such as fracture in the drawing process in spinning increased rapidly, so that the spinning work was poor and smooth spinning was not possible.

2. Experiment and Evaluation Method.

(1) fineness measurement

A coil of 1 m was wound 90 m in one rotation, and the weight was measured and converted into 9000 m.

(2) Measurement of strength and elongation

The strength and elongation of the fibers were measured by applying a 50 cm / m speed and a 50 cm gripping distance using an automatic tensile tester (Textechno).

Strength and elongation is the value obtained by dividing the load (g / de) divided by the denier (denier) until the fiber is stretched until it is cut with a constant force (fig. %) Is defined as Shinto.

(3) non-number measurement

After the heat-treatment of the evaluation sample at 100 ° C. for 30 minutes, the difference between the measured length and the original length is calculated.

Ratio (%) = (First Sample Length-Sample Length after Heat Treatment) / First Sample Length × 100

(4) spinning workability (%)

Yarn workability = (total number of yarns produced-number of yarns trimmed) / total number of yarns produced * 100

(5) drape

Sensory test by 10 experts showed that 8 or more people were draped and 5 to 7 people were draped.

(6) anti-impregnation

It is excellent when 10 or more experts can't judge the number by 10 experts by writing the number 10cm below the fabric made of weaving and knitting. 5 ~ 7 people usually can't judge the number. When less than a person was classified as bad.

(7) UV blocking rate (%) measurement

UV shielding rate (%): 100-transmittance of the measured sample

Measurement of transmittance with wavelength 320 ~ 390 nm using spectrophotometer

When the ultraviolet ray shielding rate is 10% or less, it can be judged that the ultraviolet ray blocking property is excellent.

(8) Limiting Oxygen Index

In order to evaluate a flame retardance, it measured based on KS-M ISO 4589-1-3 or JIS K7201 A-1. In general, if the LOI index is 27 or more, it can be determined that the flame retardancy is excellent.

The average values for the above experiments are shown in Tables 1 and 2 for the comparative examples.

division unit Example 1 Example 2 Example 3 Example 4 Inorganic Compound Content weight% 7 5 7 7 Area ratio of core part % 60 80 60 60 Phosphorus Flame Retardant Content ppm 6,000 10,000 6,000 6,000 Area ratio of the sheath % 40 20 40 40 Fiber cross section - circle circle triangle circle Elongation ratio - 3.33 3.33 3.33 3.08 Island d 39.8 39.5 40.2 75.2 burglar g / d 4.25 4.10 4.35 4.28 Shinto % 33.7 36.8 34.6 34.5 Dagger % 7.8 8.3 8.0 8.5 Radiation workability % 93.0 90.0 92.5 94.2 Drape Castle - Great Great Great Great Anti-spill resistance - Great Great Great Great UV protection rate % 7.5 6.0 8.2 8.0  LOI Index - 30.5 31.0 29.0 30.2

division unit Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Inorganic Compound Content weight% 7 7 One 7 Area ratio of core part % 20 60 60 60 Phosphorus Flame Retardant Content ppm 6,000 6,000 500 6,000 Area ratio of the sheath % 80 40 40 40 Fiber cross section - circle circle circle circle Elongation ratio - 3.33 3.33 3.33 6.67 Island d 39.2 39.0 38.8 39.5 burglar g / d 4.30 4.15 4.45 5.20 Shinto % 33.8 35.4 32.6 10.6 Dagger % 7.5 9.2 8.4 4.8 Radiation workability % 93.5 96.0 95.0 27.5 Drape Castle - usually Bad Great Great Anti-spill resistance - Bad Bad Great Great UV shielding rate % 20.5 25.0 7.8 10.5  LOI Index - 31.4 29.8 25.0 28.5

As can be seen from the above embodiment, the polyester fiber having excellent UV blocking and flame retardant performance according to the present invention has excellent radiation workability, good UV blocking rate, good flame retardancy, excellent anti-reflective property, and excellent strength, elongation, and physical properties. It can be seen that it is an ester fiber.

1 is a process chart for producing a polyester fiber excellent in UV protection and flame retardant performance according to an embodiment of the present invention,

2 to 7 is a view showing a variety of release cross-section of the polyester fiber excellent in UV protection and flame retardant performance according to the present invention.

Claims (15)

In the polyester fiber which consists of a core part and a sheath part, The core portion is formed of a polyester-based resin containing an inorganic compound to block ultraviolet rays, the sheath portion is a polyester fiber excellent in UV protection and flame retardant performance, characterized in that formed of a polyester-based resin containing a phosphorus-based flame retardant. The method of claim 1, The inorganic compound is a mixture of zinc oxide or titanium oxide or zinc oxide, titanium oxide and the particle size is 1.0 ~ 5.0㎛ the core portion is characterized in that the inorganic compound contains 1 to 15% by weight of the inorganic compound Polyester fiber with excellent UV protection and flame retardant performance. The method of claim 1, The phosphorus flame retardant is a polyester fiber having excellent UV protection and flame retardant performance, characterized in that the phosphorus atom (P) is contained in the polyester resin of the sheath portion of 500ppm to 15,000ppm. [Formula 2]

Provided that R ₁ and R ₂ are methyl, phenyl, halophenyl, alkyl, haloalkyl or haloaryl. The method of claim 1, An antioxidant, an antimicrobial agent, a deodorant, a fluorescent brightener, and a polymerization stabilizer are added to the sheath portion, the core portion, or the sheath portion, the core portion. The method of claim 1, The polyester fiber is a sectional cross section selected from square, triangular, Y-shaped, flat, island-type, and split type, and the sheath-to-core portion is 20:80 to 80:20 in cross-sectional ratio. High performance polyester fiber. The method according to any one of claims 1 to 5, The polyester fiber has excellent UV protection and flame retardant performance, characterized in that the strength of 2.0 ~ 7.0g / d, elongation 10 ~ 80%, elongation deviation 0 ~ 20.0%, specific value 3.0 ~ 20.0%. A fabric comprising the polyester fiber of any one of claims 1 to 5. In the manufacturing method of the polyester fiber which consists of a core part and a sheath part, A polymerization step of polymerizing a flame-retardant polyester-based resin copolymerized with a polyester-based resin containing an inorganic compound that blocks ultraviolet rays and a phosphorus-based flame retardant; A drying step of drying each polyester-based resin that has passed through the polymerization step; Melting step of melting the polyester-based resin containing the inorganic compound to block the dried ultraviolet rays at 260 to 330 ℃, and melting the polyester-based resin containing a phosphorus flame retardant at 250 to 320 ℃; Spinning step of producing a polyester fiber by complex spinning the melt passed through the melting step at a temperature of 250 to 320 ℃; Method for producing a polyester fiber excellent in UV protection and flame retardant performance, characterized in that it is prepared, including the heat setting and stretching step of stretching the spun polyester fiber while heat-setting. The method of claim 8, The inorganic compound is a mixture of zinc oxide or titanium oxide or zinc oxide, titanium oxide and the particle size is 1.0 ~ 5.0㎛ the core portion is characterized in that the inorganic compound contains 1 to 15% by weight of the inorganic compound Method for producing a polyester fiber excellent in UV protection and flame retardant performance. The method of claim 8, The phosphorus-based flame retardant is a formula (2) of the phosphorus atom (P) in the sheath portion of the polyester resin manufacturing method of the polyester fiber excellent in UV protection and flame retardant performance, characterized in that it comprises 500ppm to 15,000ppm. [Formula 2]

Provided that R ₁ and R ₂ are methyl, phenyl, halophenyl, alkyl, haloalkyl or haloaryl. The method of claim 8, The polyester fiber is a sectional cross section selected from square, triangular, Y-shaped, flat, island-type, and split type, and the sheath-to-core portion is 20:80 to 80:20 in cross-sectional ratio. Process for producing polyester fiber with excellent performance. The method of claim 8, The stretching step is the first heat setting at 600 to 2,000mpm, 60 ~ 120 ℃ in the first high speed roller, the second high heat roller at the speed of 3,000 to 5,000 mpm, stretching at the second heat setting at a temperature of 90 to 150 ℃ Method for producing a polyester fiber excellent in UV protection and flame retardant performance, characterized in that. The method of claim 8, The stretching step is a method of producing a polyester fiber with excellent UV protection and flame retardant performance, characterized in that the stretching ratio of 1.5 to 5.0. The polyester fiber produced by the method of any one of claims 8 to 13 is characterized in that the strength is 2.0 to 7.0g / d, elongation 10 to 80%, elongation deviation 0 ~ 20.0%, specific number 3.0 ~ 20.0% The manufacturing method of the polyester fiber excellent in the UV-protection and flame-retardant performance. A fabric comprising a polyester fiber produced by the method of any one of claims 8 to 13.

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