KR102222428B1 - Superengineering plastic resin-based flame-retardant fiber for black wig and preparation method thereof - Google Patents

Abstract

The present invention relates to: a method for manufacturing super engineering plastic resin-based flame-retardant black wig fibers which comprises a step for extruding and winding a super engineering plastic material at a high temperature in the range of 300 to 450°C at a predetermined spinning speed, and is dyed black by adding carbon black; black wig fibers which includes carbon black and does not include a flame retardant; and a hair product comprising the same.

Description

TECHNICAL FIELD [Superengineering plastic resin-based flame-retardant fiber for black wig and preparation method thereof]

The present invention includes a method of manufacturing a flame-retardant black wig yarn based on a super engineering plastic resin, comprising the step of adding carbon black at the same time as melt spinning of a super engineering plastic, and does not include a flame retardant, and a black wig yarn containing carbon black and dusik containing the same. It is about the product.

Wigs were first used in Egypt for decoration and protection from sunlight, and in ancient times, hair itself has existed as a symbol of beauty as well as a mark of status, gender, or race through hair. Currently, wigs, which are gaining popularity with more consumers in recent years due to economic development, are expressed as a part of beauty means that express their individuality by their desire to express their appearance beautifully as well as functionality. However, in a society that values individuality in modern times, they express their beauty by changing hairstyles using tools. Originally, black wigs were used the most, but various colors such as red, yellow, and green appeared around the 12th century BC.

There are two types of wigs: human hair and artificial hair. Human hair wigs are made from human hair and are natural and can be modified in hairstyles, but they are difficult to manage and generally have a short lifespan. In the case of artificial hair wigs, they have a long lifespan, but most of the products are not dyeable or permable, and there is a disadvantage of not being free to change hairstyles. The material used for wigs has been mainly human hair, but as income levels in developed countries improve, it is becoming more difficult to obtain human hair, and as the price is rising, the number of wigs using synthetic hair comparable to human hair is on the rise. to be.

As such, hair yarn is largely divided into human hair and synthetic hair. The characteristics of human hair used for wigs are natural gloss and hair quality, and can be dyed and bleached in the state of the wig, but there are problems of entanglement and durability of the hair when used, and the problem of being discolored by ultraviolet rays and natural environment when worn for a long time. On the other hand, synthetic hair has good durability, does not cause tangling or discoloration of the hair, is convenient to manage and maintains naturalness, but has the disadvantage of showing the unique sparkling phenomenon of synthetic fibers with the naked eye. Specifically, artificial hair used as a wig yarn is indispensable for its vivid color, natural gloss, lightness, heat resistance, soft touch and flexibility, and flame retardancy along with curl formation. However, in the case of polyester yarn, it is not widely used as a wig yarn because it does not have the properties required by the artificial hair as described above.

In order to impart flame retardancy, which is an essential element required for the above-described wig yarn, a flame-retardant wig yarn is manufactured by mixing and spinning a phosphorus-based or bromine-based flame retardant with a basic polymer resin. However, when a separate flame retardant is added, the occurrence of pyrolytic carbide increases as the spinning time elapses, clogging the nozzle hole or accumulating pyrolytic carbides around the nozzle hole through which the molten resin is discharged, resulting in trimming due to howitzing. Production can become difficult. In order to exclude these problems, the flame retardant that can be used is limited, and it is possible to reduce productivity, such as occurrence of trimming in the fiber manufacturing process by pyrolysis of the flame retardant, cleaning around the nozzle hole, and replacement of the nozzle, and the melt flowability of the polymer resin and the flame retardant. If the difference is large, it is difficult to manufacture a wig yarn of uniform quality, and long-term continuous production may be limited.

Further, it is preferable that the wig yarn has a uniform thickness in appearance, and has a diameter of 40 to 100 μm similar to human hair or a fineness (thickness) of 40 to 100 De (Denier). This is thicker than that of general clothing fibers, and it is difficult to produce fibers of such a thickness with a general fiber manufacturing method. For example, when a general fiber spinning facility is used, solidification is difficult, and crystallization by orientation and/or stretching is difficult even after manufacture, and physical properties may be deteriorated.

On the other hand, in order to manufacture a plastic having desired properties, a predetermined polymer material must be introduced. Such substances may be substances that impart color to the raw material such as pigments or dyes, substances that impart functional properties such as improved flame resistance or light resistance to the product produced, and even substances that improve the mechanical and/or thermal properties of the final product. Using this, by adding a pigment polymer capable of producing a colored plastic wig yarn product at a simple and low cost, it is possible to manufacture an artificial fiber wig yarn having a color similar to that of human hair, which is the main purpose of the wig yarn.

001. Korean Patent Application Publication No. 10-2006-0131307 002. Korean Patent Registration No. 10-0689627

The present inventors did not add a separate heat-resistant agent and controlled the type of the basic polymer resin, the fiber spinning device and/or the spinning condition to impart flame retardancy and static electricity resistance, and as a result of diligent research efforts to manufacture black synthetic wig yarn. The present invention was completed by using super engineering plastic, which is a generation synthetic resin, as a basic material, but adding carbon black.

As an aspect, as a method for manufacturing a flame-retardant black wig yarn based on a super engineering plastic resin, comprising the step of adding carbon black at the same time as melt spinning of the super engineering plastic, wherein the melt spinning comprises a hopper made of a nickel alloy material, an extruder, and a die. Using a melt spinning facility, extruding at a spinning speed of 500 to 2500 m/min while maintaining the temperature from the hopper to the die at a predetermined temperature selected in the range of 300 to 450°C, and winding at a speed of 300 to 1000 mpm. It is to take, to provide a method of manufacturing a flame-retardant black wig yarn based on a super engineering plastic resin having a diameter of 40 to 100 De.

At this time, the fiber produced by the method of the present invention described above is characterized by having flame retardancy without including a separate flame retardant.

The manufacturing method of the present invention specifically includes the steps of introducing a polymer resin through a main feeder and carbon black through a side feeder, as shown in FIG. 2.

The term "superengineering plastic (SEP)" of the present invention generally refers to a third generation synthetic resin that has improved heat resistance by improving the essential properties of plastics that are weak to heat. The super engineering plastic is the super engineering plastic Silver polysulfone (PSU), polyphenylene sulfide (PPS), polyether ketone (PEK), polyether ether ketone (PEEK), liquid crystalline polymer (LCP) ), Liquidcrystal Polyester (LCP), Polytetrafluoroethylene (PTFE), Perfluoroalkoxy alkane (PFA), Ethylene Tetra fluoro Ethylene (E/TFE) ), fluororesins such as polyvinylidene fluoride (PVDF), polyether nitrile (PEN), and crystalline SEPs such as polyimide (PI), and polyarylethersulfone ether sulfone); PAES), polysulfone (PSU), polyether sulfone (PES), polyarylate (PAR), polyamide imide (PAI), and polyetherimide imide; PEI). These super engineering plastics have sufficient strength, light weight, heat resistance, chemical resistance, and/or abrasion resistance, and are therefore used in the information industry, semiconductor manufacturing equipment, and food processing machinery. However, in spite of excellent heat resistance, processing is impossible at a general fiber spinning process temperature, and there has been no attempt to manufacture a flame retardant fiber, particularly, a wig yarn having a predetermined thickness based on this.

The present invention is based on the development of a method for manufacturing a flame-retardant fiber of a suitable scale for wig yarn without containing a separate flame retardant based on the strength and high heat resistance of the super engineering plastic. Specifically, the super engineering plastic is stable even at high temperatures, so it is impossible to fiberize at 220 to 300°C, which is a general polymer fiber spinning temperature, and can be fiberized by spinning at 320 to 420°C. Difficult to bear Accordingly, in the present invention, a corrosion-resistant nickel alloy, for example, HASTELLOY B2, is selected as a material that can withstand high temperatures and prevents corrosion by sulfone-based polymers such as PSU, and a device designed to be driven at high temperatures and a flame-retardant wig using the same. We propose an optimized condition for manufacturing yarn.

In particular, when used as a wig yarn, it is preferable that it is manufactured to have a predetermined fineness, for example, a thickness similar to that of human hair, that is, tens to 100 De diameter, unlike fibers for general clothing. Therefore, the fiber is produced by winding while extruding using a device driven at a predetermined temperature selected from the above 300 to 450°C, but the spinning speed and the winding speed can be adjusted to have a desired thickness, that is, 40 to 100 De diameter. have. For example, it can be extruded at a spinning speed of 500 to 2500 m/min, and wound at a speed of 300 to 1000 mpm, specifically 300 to 900 mpm. At this time, when the winding speed is kept constant, the thickness of the manufactured fiber increases as the spinning speed increases. On the contrary, when the spinning speed is kept constant, the thickness of the fibers decreases as the winding speed increases. Accordingly, a person skilled in the art may select a combination of spinning speed and winding speed within the above-described range in order to manufacture a fiber having a desired thickness in consideration of these characteristics. In addition, since the change in thickness according to the spinning speed and the winding speed is a general example, the absolute value may vary depending on the material used, and it is preferable to determine these variables comprehensively.

Iron black (iron oxide black) and carbon black are widely used as the dyeing dye. Iron oxide is a typical pigment, with Fe ₂ O ₃ in red, Fe ₃ O ₄ in black, and iron hydroxide in yellow to brown. The black iron oxide black pigment is resistant to acids and alkalis and has excellent dispersibility, but turns brown at 200-400°C, and changes to red alpha (α) ferric oxide at 500-600°C. Therefore, it is not suitable for SEP spinning used at high temperature. On the other hand, carbon black pigments have excellent thermal stability at a thermal decomposition temperature of 400°C or higher, and have excellent coloring and hiding power due to their very fine particles, which are the most widely used among black pigments. Therefore, the use of carbon black can improve not only the black dyeing function, but also the flame retardancy and static electricity resistance of the wig yarn.

The manufacturing method of the present invention uses any one or more selected from polysulfone as the super engineering plastic. These polymers not only have the excellent heat resistance of the super engineering plastic itself, but also have a transparent color close to off-white or colorless when manufactured with fibers having a diameter of 40 to 100 De suitable for wig yarn, that is, they have almost no color of the fibers themselves. It is easy to realize black wig yarn by simply dyeing it using carbon black. In addition, these materials have excellent strength, are less damaged by chemicals, and are less affected by moisture, so they are less damaged by storage, so they can be advantageous in management when applied to wigs.

In another aspect, the present invention provides a flame-retardant black wig yarn having a diameter of 40 to 100 De, which includes carbon black, does not contain a flame retardant, and is manufactured based on a super engineering plastic material.

The wig yarn of the present invention is made of a super-engineered plastic material with excellent heat resistance, so that it exhibits flame retardancy without including a separate flame retardant.Therefore, disadvantages such as uneven thickness of the fiber during manufacture by adding a separate flame retardant are excluded. It may be a fiber having a uniform thickness of a desired diameter of 40 to 100 De in diameter.

In general, synthetic resins generate static electricity due to hydrophobicity, and thus, excellent flame retardancy as well as antistatic properties are often required. The carbon black of the present invention can improve flame retardancy performance as a filler, and conductive carbon black prevents static electricity. It was found that the effect (FIG. 6) can be imparted, and carbon black was added to It provides a wig yarn having features of enhanced flame retardancy and static electricity resistance.

Specifically, as the carbon black particle diameter is 10 to 50 nm, it is advantageous to develop a dark black color. And when the content in the super engineering plastic resin is less than 0.1 wt%, there is a problem that black expression is difficult, and when it exceeds 5 wt%, there is a problem that it is difficult to form fibers, so it is most preferable to contain 0.1 to 5 wt% of the total weight. desirable.

The wig yarn of the present invention may be a flame-retardant black wig yarn manufactured by the manufacturing method of the present invention described above, but is not limited thereto.

In another aspect, the present invention provides a dosik product comprising the flame-retardant black wig yarn.

Non-limiting examples of hair products to which the flame retardant black wig yarn of the present invention can be applied may include hair wigs, weaving hair, hair extensions, blade hair, hair accessories, and doll hair.

It is preferable that the wig yarn constituting the Doo-sik product has a touch similar to that of human hair so that discomfort does not occur when the Doo-sik product is installed. In addition, since these Doo-sik products generally live in a mounted state, the wig yarns constituting the Doo-sik products are damaged and deformed according to use, resulting in a deterioration in quality. Therefore, in the case of a product made of a synthetic fiber-based wig yarn, quality deterioration due to fiber deformation during use is remarkable, so it is necessary to improve durability to suppress fiber deformation.

On the other hand, the dusik product may be formed only with the synthetic wig yarn of the present invention. Alternatively, the DooSik product is a combination of other synthetic fibers for wigs such as modacrylic fibers, polyvinyl chloride fibers, nylon fibers, and/or natural fibers such as human hair and wool in addition to the flame-retardant wig yarn based on the super engineering plastic of the present invention. It can be manufactured by doing.

The manufacturing method of the present invention found that carbon black can improve flame retardancy as a filler, and that conductive carbon black can impart antistatic effect, and was prepared to show a black color similar to actual hair by adding the carbon black. Completed the super engineering plastic fiber. In addition, since it is based on heat-resistant super-engineering plastic, it can be usefully used as a black wig yarn because it exhibits flame-retardant properties without including a separate flame retardant.

1 is a diagram schematically showing a manufacturing process according to the present invention.
Figure 2 is a schematic view showing a super-engineering plastic resin-based fiber manufacturing apparatus according to the present invention.
3 is a diagram showing the linear density according to the winding speed of a PSU/CB fiber manufactured by spinning at 330° C. according to an embodiment of the present invention.
4 is a diagram showing an SEM image of a cross section of a PSU/CB fiber manufactured by spinning at 330° C. according to an embodiment of the present invention.
5 is a view showing the actual form of the black dyed PSU fiber manufactured according to an embodiment of the present invention.
6 shows the LOI value of PSU fibers according to the content of carbon black in an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail through examples. These examples are for explaining the present invention more specifically, and the scope of the present invention is not limited by these examples.

Example 1: Preparation of flame-retardant fiber based on polysulfone (PSU/CB) added with carbon black

Using the equipment disclosed in Fig. 2, as a raw material, polyethersulfone, a kind of amorphous super engineering plastic, was supplied through a feeder to form fibers. The equipment was made of a nickel alloy (HASTELLOY B2) excellent in heat resistance and corrosion resistance. At this time, the optimized temperature in each area of the facility, the spinning speed (screw speed, unit rpm) and the winding speed (winder speed, unit mpm) of the twin-screw extruder are shown in Table 1 below.

Material Temperature(℃) Twin screw extruder
Spinning speed
(rpm) Winding speed
(mpm) C1 (Hopper) C2 C3 C4 C5 (die) PSU 330 330 330 330 330 50-80 300~1000

Experimental Example 1: Linear density change according to winding speed

PSU fibers were prepared while changing the winding speed from 300 mpm (meter/minute) to 1000 mpm, and the fineness (unit De, demier) of the obtained fibers was measured and shown in FIG. 3. As shown in FIG. 3, as the winding speed increases, the fineness, that is, the thickness of the manufactured fiber decreases.

Experimental Example 2: Shape of Super Engineering Plastic Fiber

In order to check the thickness and/or uniformity of the fiber produced according to Example 1 of the present invention, a PSU/CB manufactured by spinning at 330°C at a spinning speed of 400 m/min and a winding speed The side and cross section of the fiber were observed by SEM, and the results are shown in FIG. 4. As shown in Figure 4, it was confirmed that the fibers made of PSU/CB are all cylindrical with a smooth surface and a constant thickness.

Claims (9)

As a method of manufacturing a super engineering plastic resin-based flame-retardant black wig yarn comprising the step of adding carbon black at the same time as super engineering plastic melt spinning,
The melt spinning is carried out using a melt spinning facility equipped with a hopper made of a nickel alloy material, an extruder, and a die, while maintaining the temperature from the hopper to the die at a predetermined temperature selected in the range of 300 to 450°C. Extruded at a spinning speed of min, and wound at a speed of 300 to 1000 mpm,
The super engineering plastic is at least one selected from the group consisting of poly (aryl ether sulfone) (PAES), polysulfone (PSU), and polyether sulfone (PES),
The carbon black is included in a ratio of 0.1 to 5 wt% based on the total weight,
A method of manufacturing a flame-retardant black wig yarn based on a super engineering plastic resin having a fineness of 40 to 100 De.
delete Contains carbon black, does not contain flame retardants, is manufactured based on super engineering plastic material,
The super engineering plastic is at least one selected from the group consisting of poly (aryl ether sulfone) (PAES), polysulfone (PSU), and polyether sulfone (PES),
The carbon black is included in a ratio of 0.1 to 5 wt% based on the total weight,
Flame-retardant black wig yarn with a fineness of 40 to 100 De.
The method of claim 3,
The wig yarn is a wig yarn manufactured by the method of claim 1.
The method of claim 3,
The carbon black is a wig yarn characterized by improving flame retardancy and static electricity resistance.
delete The method of claim 3,
The carbon black has a diameter of 10 to 50 nm.
Doosik products containing the black wig yarn of Clause 3.
The method of claim 8,
Hair wigs, weaving hair, hair extensions, blade hair, hair accessories and doll hair, which will be selected from the group consisting of doo-sik products.

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