TWI684684B - Fluorescent fiber and manufacturing method thereof - Google Patents

Abstract

A fluorescent fiber and a manufacturing method thereof are provided. The fluorescent fiber includes a fiber body and a composite pigment. The composite pigment is adhered on the fiber body. The fiber body includes polyamide, polyester, polypropylene, or thermoplastic polyurethane. The composite pigment includes a fluorescent pigment and a titanium dioxide. The titanium dioxide is adhered on the fluorescent pigment. The weight ratio of the fluorescent pigment and the titanium dioxide ranges from 2.5 to 17. The titanium dioxide is rutile. The fluorescent fiber is a fully oriented yarn.

Description

Fluorescent fiber and its manufacturing method

The invention relates to a fluorescent fiber and a method for manufacturing the same, and particularly to a fluorescent fiber with a composite pigment attached thereto and a method for manufacturing the same. The composite pigment includes a fluorescent pigment and titanium dioxide attached thereto.

Since the advent of fluorescent fiber, due to its light-emitting characteristics, it can be widely used in various clothing and outdoor products. However, fluorescent pigments often face the problems of discoloration and detachment from fibers due to poor fastness to sunlight and poor fastness to washing. In view of the above, there is an urgent need to develop new fluorescent fibers to meet the needs of various products and expand their applicability.

The present disclosure provides a method for manufacturing a fluorescent fiber, including the following steps. The fluorescent pigment, titanium dioxide, and solvent are subjected to a grinding and dispersion procedure to form a dispersion liquid, wherein the weight ratio of fluorescent pigment to titanium dioxide is 2.5 to 17, and the crystal form of titanium dioxide is rutile. A stirring procedure is performed on 25 parts by weight to 30 parts by weight of the dispersion and 65 parts by weight to 80 parts by weight of the fiber raw material to obtain a fluorescent fiber raw material. On fluorescent fiber The dimension raw materials are subjected to a kneading and granulation process to form a fluorescent fiber masterbatch, wherein the temperature of the kneading and granulation process is 220°C to 250°C. The fluorescent fiber masterbatch is subjected to a melt spinning process to form fluorescent fibers.

In some embodiments, the time for the grinding and dispersion procedure is 30 minutes to 120 minutes.

In some embodiments, the grinding and dispersing procedure includes: stirring the fluorescent pigment, titanium dioxide, and the solvent with metal beads in a stirrer.

In some embodiments, the metal beads are zirconium beads.

In some embodiments, the blade rotation speed in the agitator is 1500 rpm to 2700 rpm.

In some embodiments, the temperature of the melt spinning program is 245°C to 280°C.

The present disclosure provides a fluorescent fiber, which includes a fiber body and a composite pigment, the composite pigment is attached to the fiber body. The fiber body includes polyamide, polyester, polypropylene or thermoplastic polyurethane. Composite pigments include fluorescent pigments and titanium dioxide. Titanium dioxide is attached to fluorescent pigments. The weight ratio of fluorescent pigments to titanium dioxide is 2.5 to 17, and the crystal form of titanium dioxide is rutile. The fluorescent fiber is a fully-extended filament.

In some embodiments, the fiber strength of the fluorescent fiber is 4.02 gf/d to 4.06 gf/d.

In some embodiments, the fiber extension of the fluorescent fiber is 52.1% to 53.1%.

It should be understood that the foregoing general description and the following specific description are merely exemplary and explanatory, and are intended to provide the required invention. Ming further instructions.

The above and other aspects, features and other advantages of the present invention can be more clearly understood with reference to the description and the accompanying drawings. Among them: Figure 1 is the X-ray diffraction of the rutile titanium dioxide (X-ray diffraction) ) Atlas.

For a more detailed and complete description of the present disclosure, reference may be made to the accompanying drawings and various embodiments described below.

For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary.

Although a series of operations or steps are used to illustrate the method disclosed herein, the sequence of these operations or steps should not be construed as a limitation of the present invention. For example, some operations or steps may be performed in a different order and/or simultaneously with other steps. In addition, it is not necessary to perform all illustrated operations, steps, and/or features to implement the embodiments of the present invention. In addition, each operation or step described herein may include several sub-steps or actions.

In order to solve the problems described in the prior art, the present disclosure provides a fluorescent fiber and a manufacturing method thereof. Fluorescent fiber including fiber body And the composite pigment attached to the fiber body. Composite pigments include fluorescent pigments and titanium dioxide attached to fluorescent pigments. The crystal form of titanium dioxide is rutile.

The manufacturing method of the fluorescent fiber includes the following operations. (a) Grind and disperse the fluorescent pigment, titanium dioxide, and solvent to form a dispersion, wherein the weight ratio of fluorescent pigment to titanium dioxide (weight of fluorescent pigment/weight of titanium dioxide) is 2.5 to 17, and the content of titanium dioxide The crystal form is rutile. (b) Perform a stirring procedure on 25 parts by weight to 30 parts by weight of the dispersion and 65 parts by weight to 80 parts by weight of the fiber raw material to obtain a fluorescent fiber raw material. (c) Mixing and granulating the fluorescent fiber raw materials to form the fluorescent fiber masterbatch. (d) Melt spinning the fluorescent fiber masterbatch to form the fluorescent fiber.

Through operation (a), a dispersion liquid of a composite pigment containing fluorescent pigments and titanium dioxide can be obtained. In the composite pigment, titanium dioxide is attached to the fluorescent pigment, and the weight ratio of the fluorescent pigment to the titanium dioxide is 2.5 to 17. In some embodiments, the average particle diameter of the composite pigment is, for example, in the range of 150 nm to 200 nm. In some embodiments, operation (a) may include stirring the fluorescent pigment, titanium dioxide, and the solvent with metal beads in a stirrer. The metal beads are, for example, zirconium beads. During the grinding and dispersion process, metal beads can help embed titanium dioxide on fluorescent pigments. In some embodiments, the time for performing the grinding and dispersion procedure is, for example, 30 minutes to 120 minutes. In some embodiments, the blade rotation speed in the agitator is, for example, 1500 rpm (revolution per minute) to 2700 rpm. In some embodiments, when performing operation (a), the manufacturing method may further include adding dispersion Agent, wetting agent, defoaming agent, or a combination thereof, wherein the dispersing agent is, for example, BYK190, and the defoaming agent is, for example, BASF-FoamStar ST 2410. In some embodiments, the solvent is, for example, 50 parts by weight to 85 parts by weight. Since the solvent system is used to increase the mixing degree of the fluorescent pigment and titanium dioxide, and will be removed in the subsequent operation, the weight part is not limited to this. The solvent is, for example, water, but it is not limited thereto. In some embodiments, the total weight part of the fluorescent pigment and titanium dioxide is, for example, 20 parts by weight to 30 parts by weight, and the weight part of the dispersant is, for example, 1 part by weight to 20 parts by weight.

In some embodiments, when performing operation (b), the fiber raw material may include polyamide, polyester, polypropylene, or thermoplastic polyurethane. Polyamide is, for example, nylon 6. In some embodiments, when performing operation (b), the stirring procedure may include adding 0.05 parts by weight to 1 part by weight of additives mixed with the dispersion liquid and the fiber raw material, wherein the additives may include dispersants, antioxidants, stabilizers, or combination. In some embodiments, the dispersant is, for example, ethylene bis stearamide. In some embodiments, the antioxidant is, for example, the commercial model IRGANOX 1010. In some embodiments, the stabilizer is, for example, the stabilizer of the commercial model IRGAFOS 168.

In some embodiments, when operation (c) is performed, the temperature at which the kneading granulation procedure is performed is, for example, 220°C to 250°C.

In some embodiments, before performing operation (c), that is, before performing the fluorescent fiber mixing and granulation process on the raw materials, the manufacturing method may further include performing a drying process on the fluorescent fiber raw materials, and the temperature of the drying process is, for example, 80°C to 90°C, the time is, for example, 12 hours to 24 hours.

In some embodiments, when performing operation (d), the temperature at which the melt spinning procedure is performed is, for example, 245°C to 280°C.

With the above manufacturing method, the fluorescent fiber of the present disclosure includes a fiber body and a composite pigment, wherein the composite pigment is attached to the fiber body. The fiber body includes polyamide, polyester, polypropylene or thermoplastic polyurethane. Composite pigments include fluorescent pigments and titanium dioxide. Titanium dioxide is attached to fluorescent pigments. The weight ratio of fluorescent pigment to titanium dioxide is 2.5 to 17. The crystal form of titanium dioxide is rutile.

In some embodiments, the fiber body is, for example, 95 parts by weight to 100 parts by weight, and the composite pigment is, for example, 1 part by weight to 3 parts by weight. In some embodiments, the fiber fineness of the fluorescent fiber is, for example, in the range of 0.8 dpf to 1 dpf. In some embodiments, the fiber specification of the fluorescent fiber is 70d/72f, for example.

It is worth noting that since the crystal form of the aforementioned titanium dioxide is rutile, it has the ability to absorb ultraviolet rays, thereby protecting the fluorescent pigment from damage. Therefore, the fluorescent fiber of the present disclosure may have good sunlight resistance. Moreover, the adhesion of titanium dioxide does not cause the fluorescent pigment to deviate from its original color. In addition, the fluorescent fiber of the present disclosure also has good fastness to washing and perspiration.

The following embodiments are used to describe specific aspects of the present invention and enable those with ordinary knowledge in the technical field to which the present invention belongs to implement the present invention. However, the following examples should not be used to limit the present invention.

Experimental Example 1: Preparation of dispersion liquid

For orange fluorescent pigment, titanium dioxide, dispersant, defoaming The agent and the solvent are subjected to a grinding and dispersion procedure to form dispersion A and dispersion B, respectively. The weight ratio of fluorescent pigment to titanium dioxide is 4. The commercial model of the dispersant is BYK190, the commercial model of the defoamer is BASF-FoamStar ST 2410, and the solvent is water. Please refer to Table 1 below for the amount of material used in the dispersion.

The crystal form of the titanium dioxide in the dispersion B is rutile. For the X-ray diffraction (X-ray diffraction) pattern, please refer to Figure 1.

Experimental Example 2: Analysis of dispersion

After placing Dispersion A and Dispersion B at 65°C for 7 days, the average particle size, molecular weight distribution index (PDI), D ₁₀ and D ₅₀ of the composite pigment in Dispersion A and Dispersion B, D ₉₀ and Zeta potential are tested. The results obtained from the above conditions will be similar to the results of the test after placing the dispersion at room temperature for 30 days. Please refer to Table 2 below for test results.

It can be seen from Table 2 that after a long time, the dispersibility of Dispersion A and Dispersion B is good, and the molecular weight distribution of the composite pigment in Dispersion B is relatively uniform.

Experimental Example 3: Preparation of fluorescent fiber

In Examples 1 to 3, a stirring procedure was performed on the dispersion liquid B, the fiber body, and the additives to obtain fluorescent fiber raw materials. The material of the fiber body is semi-gloss nylon 6. Additives include dispersants, antioxidants, and stabilizers. The dispersant is ethylene bis stearamide. The commercial model of antioxidant is IRGANOX 1010. The commercial model of stabilizer is IRGAFOS 168. The fluorescent fiber raw material is subjected to a drying process, followed by a kneading granulation process to form a fluorescent fiber masterbatch, and then the fluorescent fiber masterbatch is subjected to a melt spinning process to form a fluorescent fiber. For the experimental conditions, please refer to the previous article, which will not be repeated here. The fluorescent fiber in this experimental example is a fully oriented yarn (FOY) with a fiber size of about 70d/72f. Please refer to Table 3 below for the amount of materials used in Examples 1-3. Since semi-glossy nylon 6 itself contains anatase-type titanium dioxide, the weight percentage of anatase-type titanium dioxide in fluorescent fibers is also listed in Table 3 below.

Comparative Examples 1 to 5 were prepared using materials different from Examples 1 to 3. However, the preparation methods of Comparative Examples 1 to 5 can refer to Examples 1 to 3, and details are not described here. The fluorescent fiber system of Comparative Example 5 was prepared using Dispersion A. Please refer to Table 4 below for the materials and material amounts of the fluorescent fibers for preparing Comparative Examples 1 to 5. Since semi-glossy nylon 6 itself contains anatase-type titanium dioxide, the weight percentage of anatase-type titanium dioxide in the fluorescent fiber is listed in Table 4 below.

Experimental Example 4: Chromaticity analysis

The fluorescent fibers of Example 1, Comparative Examples 4 and 5 were subjected to chromaticity analysis. The results are shown in Table 5 below. The larger the value of the L value, the brighter the brightness. A positive value means that the sample is reddish, a larger number means the color is redder; a negative value means that the sample is greener, and a larger number means the color is greener. A positive b value means that the sample is yellowish, and a larger number means that the color is yellower; a negative b value means that the sample is bluer, and a larger number means that the color is bluer. ΔE represents the color difference from Comparative Example 4.

It can be seen from Table 5 that the color of the fluorescent fiber of Example 1 is similar to that of Comparative Example 4, which means that the rutile-type titanium dioxide is attached to the fluorescent pigment and does not affect the color of the fluorescent fiber which performed.

Experimental Example 5: Light fastness test

The fluorescent fastness test is carried out on the fluorescent fiber, the test method is AATCC 16.2-2014 Option1. Please refer to Table 6 below for test results.

It can be seen from Table 6 that rutile titanium dioxide can effectively improve the light fastness of fluorescent pigments.

Experimental Example 6: Washing fastness test

The fluorescent fibers of Comparative Example 2, Comparative Example 4 and Examples 1 to 3 were tested for washing fastness, and the test method was AATCC 61-2013 1A. Please refer to Table 7 below for test results.

It can be seen from Table 7 that the rutile titanium dioxide adheres to the fluorescent pigment and does not affect the washing fastness of the fluorescent fiber.

Experimental Example 7: Perspiration fastness test

The fluorescent fibers of Comparative Example 2, Comparative Example 4 and Examples 1 to 3 were tested for perspiration fastness, and the test method was AATCC 15-2013. Please refer to Table 8 below for test results.

It can be seen from Table 8 that the rutile titanium dioxide adheres to the fluorescent pigment and does not affect the perspiration fastness of the fluorescent fiber.

Experimental Example 8: Fluorescent fiber properties test

The fluorescent fibers of Comparative Example 2, Comparative Example 4, and Examples 1 to 3 Please refer to Table 9 below.

In summary, the present disclosure provides a fluorescent fiber and a manufacturing method thereof. This manufacturing method has the advantage of easy operation. The fluorescent fiber includes a fiber body and a composite pigment attached to the fiber body. Composite pigments include fluorescent pigments and titanium dioxide attached to fluorescent pigments. It is worth noting that the crystal form of titanium dioxide is rutile. Rutile titanium dioxide has the ability to absorb ultraviolet rays, so it can protect fluorescent pigments from being easily discolored by sunlight. Therefore, fluorescent fibers can have good sunlight resistance. Moreover, the adhesion of titanium dioxide does not cause the fluorescent pigment to deviate from its original color. In addition, the fluorescent fiber of the present disclosure also has good fastness to washing and perspiration. The fluorescent fiber of the present disclosure has wider applicability than the traditional fluorescent fiber.

Although the present invention has been disclosed as above in the embodiments, the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Anyone who is familiar with this skill can act as if it does not depart from the spirit and scope of the present invention All equivalent changes and modifications shall fall within the scope of the present invention. The scope of protection of the invention shall be deemed as defined by the scope of the attached patent application.

Claims (9)

A method for manufacturing fluorescent fiber, comprising: grinding and dispersing fluorescent pigment, titanium dioxide, and solvent to form a dispersion, wherein the weight ratio of the fluorescent pigment to the titanium dioxide is 2.5 to 17, and the The crystal form of titanium dioxide is rutile; a stirring procedure is performed on 25 parts by weight to 30 parts by weight of the dispersion and 65 parts by weight to 80 parts by weight of the fiber raw material to obtain a fluorescent fiber raw material; The fiber raw material is subjected to a kneading and granulation process to form a fluorescent fiber masterbatch, wherein the temperature of the kneading and granulation process is 220°C to 250°C; and a melt spinning process is performed on the fluorescent fiber masterbatch to form a Said fluorescent fiber. The manufacturing method according to claim 1, wherein the time of the grinding and dispersion process is 30 minutes to 120 minutes. The manufacturing method according to claim 1, wherein the grinding and dispersing procedure includes: stirring the fluorescent pigment, the titanium dioxide, and the solvent with metal beads in a stirrer. The manufacturing method according to claim 3, wherein the metal beads are zirconium beads. The manufacturing method according to claim 3, wherein the blade rotation speed in the agitator is 1500 rpm to 2700 rpm. The manufacturing method according to claim 1, wherein the temperature of the melt spinning process is 245°C to 280°C. A fluorescent fiber, including: a fiber body, including polyamide, polyester, polypropylene or thermoplastic polyurethane; and a composite pigment attached to the fiber body, wherein the composite pigment includes a fluorescent pigment And titanium dioxide, the titanium dioxide is attached to the fluorescent pigment, the weight ratio of the fluorescent pigment to the titanium dioxide is 2.5 to 17, the crystal form of the titanium dioxide is rutile, wherein the fluorescent fiber is Fully extended wire. The fluorescent fiber according to claim 7, wherein the fiber strength of the fluorescent fiber is 4.02gf/d to 4.06gf/d. The fluorescent fiber according to claim 7, wherein the fiber elongation of the fluorescent fiber is 52.1% to 53.1%.

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