TW201843362A - Method of fabricating fiber masterbatch and fiber - Google Patents

Abstract

A method of fabricating fiber masterbatch and fiber are provided. The method of fabricating fiber masterbatch includes wet grinding an additive and an antibacterial agent, and then heating and mixing the additive and the antibacterial agent, so the additive coats the antibacterial agent evenly. Afterwards, blending the antibacterial agent evenly coated by the additive with a polymer substrate to form the fiber masterbatch, wherein the antibacterial agent is dispersed evenly in the polymer substrate.

Description

Manufacturing method of fiber masterbatch and fiber

The present invention relates to a method and a fiber for manufacturing a fiber masterbatch, and more particularly, to a method and a fiber for manufacturing a fiber masterbatch that can effectively achieve an antibacterial mechanism by using a relatively low content of an antibacterial agent.

With the improvement of living standards, human beings' requirements for home environment and personal hygiene are also increasing. In recent years, various antibacterial products have been developed, and the antibacterial functionality of the products is the main goal of continuous innovation and development in the industry. Among various products with antibacterial effect, antibacterial fiber is one of the products that are highly valued. The mechanism is mainly to make the fiber contain an antibacterial agent so as to make the fiber have antibacterial properties.

In the conventional antibacterial fiber manufacturing process, the particle size of the antibacterial agent used is about 900 nm, and the sterilization mechanism can be effectively achieved only when the effective fiber concentration is high (about 0.9 wt%). However, if a higher effective fiber concentration is required, a larger amount of antibacterial agent needs to be used, and therefore, the cost of the antibacterial fiber is increased. Based on the above, how to effectively achieve a sterilization mechanism at a lower effective fiber concentration, reduce the amount of sterilant, and thus reduce the cost of antibacterial fibers, is an important subject for current research.

The invention provides a method and a fiber for manufacturing a fiber masterbatch, and an antibacterial mechanism can be effectively achieved by using a low content of an antibacterial agent.

The method for producing a fiber masterbatch of the present invention includes the following steps. The auxiliary agent and the antibacterial agent are wet-ground, and the auxiliary agent and the antibacterial agent are heated and stirred to uniformly coat the auxiliary agent with the antibacterial agent. After that, the antibacterial agent uniformly coated with the auxiliary agent is mixed with the polymer base material to form a fiber masterbatch, and the antibacterial agent uniformly coated with the auxiliary agent is uniformly dispersed in the polymer base material.

In one embodiment of the present invention, the particle size of the antibacterial agent is 200 nm to 300 nm after wet grinding.

In an embodiment of the present invention, the auxiliary agent and the antibacterial agent are heated and stirred at a temperature of 30 ° C. to 150 ° C.

In an embodiment of the present invention, the stirring rate of the heating and stirring step is 30 rpm to 3000 rpm, and the stirring time is 100 minutes to 140 minutes.

In an embodiment of the present invention, based on the total weight of the fiber masterbatch, the content of the antibacterial agent is 0.3 wt% to 30 wt%, and the content of the auxiliary agent is 0.1 wt% to 3 wt%.

In one embodiment of the present invention, the polymer substrate includes a polyamide resin, a polyolefin resin, a polyester resin, or a combination thereof.

In one embodiment of the present invention, the auxiliary agent includes at least two of a polyether siloxane copolymer, a sodium polyacrylate solution, and a non-ionic polyether solution having an ethylene oxide group.

In one embodiment of the present invention, the antibacterial agent is composed of an organic substance and an inorganic substance.

In an embodiment of the present invention, the organic substance includes a pyridine polymer, an ammonium salt polymer, a sulfonamide polymer, a diiodomethyl polymer, an imidazole polymer, a biguanide polymer, or a combination thereof.

In one embodiment of the present invention, the inorganic substance includes zinc oxide, silicon oxide, calcium oxide, or a combination thereof.

The fiber of the present invention is made by using a fiber-sheath composite fiber containing an antibacterial agent through a core-sheath composite spinning process, and the fiber mother particle containing the antibacterial agent is made by the above-mentioned method for producing a fiber mother particle.

In one embodiment of the present invention, the core-sheath ratio of the fiber is 70/30 to 80/20.

In an embodiment of the present invention, the effective fiber concentration of the antibacterial agent in the fiber is 0.1 wt% to 0.2 wt%.

In one embodiment of the present invention, the fiber fineness of the fibers is 70 deniers / 24 strands.

In one embodiment of the present invention, the fiber masterbatch constitutes a sheath of the fiber.

Based on the above, in the method for producing a fiber masterbatch according to the present invention, the auxiliary agent and the antibacterial agent are wet-milled, and after the wet grinding, the particle diameter of the antibacterial agent is 200 nm to 300 nm. In this way, when the fiber masterbatch is made into a core-sheath type antibacterial fiber, the refined antibacterial agent can be uniformly dispersed in the sheath layer of the fiber. Therefore, the effective fiber concentration of the antibacterial agent in the fiber is 0.1 wt% to 0.2 wt%, still can effectively achieve the antibacterial mechanism, and then reduce the amount of sterilant to reduce the cost of antibacterial fibers.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic flowchart of a method for manufacturing a fiber masterbatch according to an embodiment of the present invention. Hereinafter, a method for manufacturing a fiber masterbatch according to an embodiment of the present invention will be described in detail with reference to FIG. 1.

Please refer to Figure 1. First, step S110 is performed, the auxiliary agent and the antibacterial agent are wet-milled, and then the auxiliary agent and the antibacterial agent are heated and stirred to uniformly coat the auxiliary agent with the antibacterial agent. The "uniform coating" described herein is preferably a coating layer having an approximately uniform thickness on the surface of the antibacterial agent.

In this embodiment, the antibacterial agent is composed of an organic substance and an inorganic substance. The organic substance may include a pyridine polymer, an ammonium salt polymer, a sulfonamide polymer, a diiodomethyl polymer, and an imidazole polymer. , Biguanide polymers or a combination thereof, the inorganic substance may include zinc oxide, silicon oxide, calcium oxide or a combination thereof. However, the present invention is not limited to this. On the other hand, auxiliaries may include polyether siloxane copolymers (acting as wetting agents, TEGO-270), polyacrylic acid sodium salt solution (acting as dispersion, wetting, and viscosity reduction, TEGO-715) and having At least two of ethylene oxide-based non-ionic polyether solutions (dispersing, wetting, and viscosity reduction, TEGO-760). The polyether siloxane copolymer is, for example, soluble in organic solvents ( For example, ethanol) powder.

In step S110, the auxiliary agent can perform wetting and defoaming on the powder to obtain more dispersed and stable particles. The wet grinding with the auxiliary agent added in step S110 can improve the powder immersion time, improve the grinding efficiency, and at the same time reduce the generation of air bubbles and optimize the grinding effect. In more detail, an antibacterial agent, water, and an auxiliary agent can be used as a grinding formula for wet grinding. The total amount of the antibacterial agent is 20 wt% based on the total weight of the grinding formula, and the amount of water is 77. %, And the additive amount is, for example, 3 wt%. To be specific, the auxiliary agent can use Formula 1: polyether siloxane copolymer 2 wt% and polyacrylate sodium salt solution 1 wt%; or Formula 2: polyacrylate sodium salt solution 1 wt% and epoxy Ethyl-based non-ionic polyether solution 2 wt%. After the above grinding formula containing the antibacterial agent, water, and auxiliary agent is wet-milled at 25 ° C. for about 30 minutes, the particle size of the antibacterial agent can be reduced from about 900 nm to, for example, 200 nm to 300 nm.

In step S110, for example, the auxiliary agent and the antibacterial agent are heated and stirred at a temperature of 30 ° C to 150 ° C. The stirring rate of the heating and stirring step is, for example, 30 rpm to 3000 rpm, and the stirring time is, for example, 100 minutes to 140 minutes. . Through the heating and stirring step of step S110, in addition to being able to evaporate the moisture of the antibacterial slurry, the auxiliary agent can be evenly coated on the surface of the antibacterial agent to achieve the effect of lubricating and dispersing. After step S110 in FIG. 1 and before step S120 for kneading and granulation, a material drying process may be performed on the antibacterial agent uniformly coated with the auxiliary agent, wherein the drying time is, for example, 12 hours to 24 hours (overnight drying), and the drying temperature For example, it is 80 ° C to 100 ° C, and preferably 85 ° C.

After that, please continue to refer to FIG. 1 and perform step S120 to knead the antibacterial agent uniformly coated with the auxiliary agent and the polymer base material to form a fiber masterbatch, in which the antibacterial agent uniformly coated with the auxiliary agent is uniformly dispersed in high Molecular substrate.

In this embodiment, the polymer substrate may include a polyamide-based resin, a polyolefin-based resin, a polyester-based resin, or a combination thereof. However, the present invention is not limited to this. The kneading temperature is, for example, 220 ° C to 240 ° C. The fiber masterbatch formed after kneading has a diameter of, for example, 2 mm to 3 mm, and a length of, for example, 2.5 mm to 3.5 mm. The content of the antibacterial agent is, for example, 0.3 wt% to 30 wt% based on the total weight of the fiber masterbatch, and the content of the auxiliary agent is, for example, 0.1 wt% to 3 wt%.

The present invention also proposes a fiber, which is prepared by using a fiber-sheath-type composite spinning process using fiber masterbatch containing an antibacterial agent, wherein the fiber masterbatch is made by the manufacturing method of the fiber masterbatch of the above embodiment. In more detail, the fiber masterbatch containing the antibacterial agent constitutes the sheath layer of the fiber, and the conventional resistant nylon constitutes the core layer of the fiber. 24, and the effective fiber concentration of the antibacterial agent in the fiber is, for example, 0.1 wt% to 0.2 wt%.

In the manufacturing method of the fiber masterbatch of the above embodiment, the auxiliary agent and the antibacterial agent are wet-ground so that the particle size of the antibacterial agent after wet grinding is reduced from about 900 nm to, for example, 200 nm to 300 nm. It is possible to uniformly disperse the fine antibacterial agent in the sheath of the fiber. In this way, even if the effective fiber concentration of the antibacterial agent in the fiber is, for example, as low as 0.1 wt% to 0.2 wt%, the antibacterial mechanism can still be effectively achieved, thereby reducing the amount of sterilant and reducing the cost of the antibacterial fiber.

In this embodiment, the spinning conditions of the antibacterial fiber are as follows: the extruder temperature is, for example, 250 ° C / 255 ° C / 260 ° C / 265 ° C, the box temperature is, for example, 265 ° C, and the spinning pump is, for example, 19.2 cc / rpm, The spinning speed is, for example, 3000 m / min, and the draw ratio is, for example, 2.8.

Hereinafter, the manufacturing method and fiber of the fiber masterbatch proposed by the said Example are demonstrated in detail by an experimental example. However, the following experimental examples are not intended to limit the present invention. Experimental example

In order to prove that the manufacturing method of the fiber masterbatch according to the present invention reduces the particle size of the antibacterial agent based on the wet grinding process, so that the subsequent fibers can effectively achieve the antibacterial effect even when the effective concentration of the antibacterial fiber is low. Mechanism, this experimental example is made below.

It must be noted that, since the manufacturing method of the fiber masterbatch has been described in detail above, the preparation of the fiber masterbatch is hereinafter described, and the details of the preparation are omitted for the sake of convenience. Preparation of antibacterial fiber masterbatch

The antibacterial agent, water and auxiliary agent are used as a grinding formula for wet grinding. The total amount of the antibacterial agent is 20 wt%, the added amount of water is 77%, and the additive amount is based on the total weight of the grinding formula. 3 wt% (Formulation 1: Polyether siloxane copolymer 2 wt% and polyacrylate sodium salt solution 1 wt%; Formula 2: Polyacrylate sodium salt solution 1 wt% and non-ionic type with ethylene oxide group Polyether solution 2 wt%). After the above grinding formula containing the antibacterial agent, water, and auxiliary agent is wet-milled at 25 ° C. for about 30 minutes, the particle size of the antibacterial agent can be reduced from about 955.5 nm to about 217 nm. After that, the auxiliary agent and the antibacterial agent were heated and stirred at a stirring rate of 3000 rpm for 2 hours at a stirring temperature of 90 ° C, and then dried at a drying temperature of 85 ° C for 24 hours, and finally at a mixing temperature of 220 ° C to 240 ° C Kneading is performed to form a fiber masterbatch. Spinnability evaluation

The antibacterial fiber masterbatches of Formula 1 and Formula 2 were subjected to fiber spinning, and their spinnability was measured. In the one-hour spinnability evaluation of Formula 1, there were 3-5 broken yarns, while Formula 2 had only 1-2 broken yarns. Therefore, the antibacterial properties of the antibacterial fiber masterbatch of Formula 2 will be further evaluated below. Evaluation of effective concentration of antibacterial fiber, fiber strength, fiber elongation, spinning workability and antibacterial property

Fiber spinning was performed according to the components and conditions listed in Table 1 below to prepare the fibers of Examples 1 to 2 and Comparative Examples 1 to 7, and the prepared fibers were subjected to an effective concentration of antibacterial fibers, The fiber strength, fiber elongation, spinning workability, and antibacterial properties were evaluated. The evaluation results are shown in Table 1.

The effective concentration of the antibacterial fiber is calculated by the following formula 1. The fiber elongation is performed in accordance with the ASTM 2256 standard test method. Judgment of spinning workability: Number of broken yarns in one hour ((: 0 times, ○: 1-2 times, △: 3-5 times, X: 6 times or more). The antibacterial evaluation is based on the AATCC-100 standard test method to detect the sterilization rate (%) of the fiber against Staphylococcus aureus, and calculate the antibacterial rate by the following formula 2. The number of bacteria immediately washed out refers to the control group and the sample group The number of bacteria flushed immediately upon contact with the bacterial solution (0 second incubation), and the number of bacteria after culture refers to the number of bacteria in the sample group that is cultured for 18 to 24 hours. (Formula 1) (Formula 2) Table 1

As shown in Table 1 above, Example 1 and Example 2 use the fiber masterbatch produced by the fiber masterbatch manufacturing method of the present invention to prepare a core-sheath composite fiber. The particle size of the antibacterial agent after wet grinding is reduced to 217.1 nm is uniformly dispersed in the sheath of the fiber. Therefore, even when the effective fiber concentration is as low as 0.12% or 0.18%, the sterilization rates of 99.8 and 95.6% can still be achieved, and the antibacterial mechanism can be effectively achieved. In this way, the amount of sterilant can be reduced, thereby reducing the cost of antibacterial fibers.

In contrast, the fiber made in Comparative Example 1 was a single-component fiber, and therefore, the antibacterial agent was not uniformly dispersed on the surface of the fiber. In this way, even if the particle size of the antibacterial agent is reduced to 217.1 nm, when the effective fiber concentration is low, the antibacterial mechanism cannot be effectively achieved, and the antibacterial rate is quite low. The fiber made in Comparative Example 2 is a single-component fiber. Therefore, even if the particle size of the antibacterial agent is reduced to 217.1 nm, a relatively high effective fiber concentration is still needed to achieve the antibacterial mechanism, so the cost of antibacterial fibers cannot be solved. problem.

In addition, as shown in Table 1, since the particle size of the antibacterial agent in Comparative Examples 3 and 4 was 955.5 nm, and the wet grinding of the present invention was not performed to reduce the particle size of the antibacterial agent to 217.1 nm, Even if they are both core-sheath type composite fibers, antibacterial agents with larger particle diameters are not easily dispersed uniformly in the sheath of the fibers, so the antibacterial rate is quite low, and an antibacterial mechanism cannot be achieved.

On the other hand, the antibacterial fiber of the present invention is not only a core-sheath type composite fiber, but also the core-sheath ratio is preferably 70/30 to 80/20, so that the antibacterial mechanism can be effectively achieved with a low amount of antibacterial agent. As shown in Table 1, the core-sheath ratio of Comparative Examples 5 to 7 is not 70/30 to 80/20. Therefore, the antibacterial rate of Comparative Examples 5 and 6 is quite low, and Comparative Example 7 is based on the core-sheath ratio. Too much disparity (90/10), the sheath layer cannot cover the core layer, resulting in the polymer melt being unable to form silk after spinning out.

Based on the above, in the method for producing a fiber masterbatch according to the present invention, the auxiliary agent and the antibacterial agent are wet-milled, and after the wet grinding, the particle diameter of the antibacterial agent is 200 nm to 300 nm. In this way, when the above-mentioned fiber masterbatch is made into an antibacterial core-sheath composite fiber with a sheath ratio of 70/30 to 80/20, the specific surface area of the fiber is increased, and the refined antibacterial agent can be uniformly dispersed in the sheath of the fiber Therefore, the effective fiber concentration of the antibacterial agent in the fiber is 0.1 wt% to 0.2 wt%, and the antibacterial mechanism can still be effectively achieved, thereby reducing the amount of sterilant and reducing the cost of the antibacterial fiber.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

S110, S120‧‧‧step

FIG. 1 is a schematic flowchart of a method for manufacturing a fiber masterbatch according to an embodiment of the present invention.

Claims (15)

A method for manufacturing a fiber masterbatch, comprising: wet grinding an auxiliary agent and an antibacterial agent, and heating and stirring the auxiliary agent and the antibacterial agent so that the auxiliary agent uniformly covers the antibacterial agent; and The antibacterial agent uniformly coated with the auxiliary agent is mixed with a polymer base material to form the fiber masterbatch, and the antibacterial agent uniformly coated with the auxiliary agent is uniformly dispersed in the polymer. Molecular substrate. The method for manufacturing a fiber masterbatch according to item 1 of the scope of the patent application, wherein the particle size of the antibacterial agent is 200 nm to 300 nm after wet grinding. The method for manufacturing a fiber masterbatch according to item 1 of the scope of patent application, wherein the auxiliary agent and the antibacterial agent are heated and stirred at a temperature of 30 ° C to 150 ° C. The method for manufacturing a fiber masterbatch according to item 3 of the scope of the patent application, wherein the stirring rate of the heating and stirring step is 30 rpm to 3000 rpm, and the stirring time is 100 minutes to 140 minutes. The method for manufacturing a fiber masterbatch according to item 1 of the scope of the patent application, wherein the content of the antibacterial agent is 0.3 wt% to 30 wt% and the content of the auxiliary agent is 0.1 based on the total weight of the fiber masterbatch. wt% to 3 wt%. The method for manufacturing a fiber masterbatch according to item 1 of the scope of the patent application, wherein the polymer substrate includes a polyamide resin, a polyolefin resin, a polyester resin, or a combination thereof. The method for manufacturing a fiber masterbatch according to item 1 of the patent application scope, wherein the auxiliary agent includes a polyether siloxane copolymer, a sodium polyacrylate solution, and a non-ionic polyether having an ethylene oxide group. At least two of the solutions. The method for producing a fiber masterbatch according to item 1 of the scope of patent application, wherein the antibacterial agent is composed of an organic substance and an inorganic substance. The method for manufacturing a fiber masterbatch according to item 8 of the scope of the patent application, wherein the organic substance includes a pyridine polymer, an ammonium salt polymer, a sulfonamide polymer, a diiodomethyl polymer, and an imidazole Polymers, biguanide polymers, or combinations thereof. The method for manufacturing a fiber masterbatch according to item 8 of the scope of patent application, wherein the inorganic substance includes zinc oxide, silicon oxide, calcium oxide, or a combination thereof. A fiber manufactured by using a core-sheath composite spinning process using a fiber masterbatch containing an antibacterial agent, wherein the fiber masterbatch is a fiber according to any one of claims 1 to 10 It is made by the manufacturing method of a masterbatch. The fiber according to item 11 of the scope of patent application, wherein the core-sheath ratio of the fiber is 70/30 to 80/20. The fiber according to item 11 of the scope of patent application, wherein the effective fiber concentration of the antibacterial agent in the fiber is 0.1 wt% to 0.2 wt%. The fiber according to item 11 of the scope of patent application, wherein the fiber fineness of the fiber is 70 deniers / 24 strands. The fiber according to item 11 of the patent application scope, wherein the fiber masterbatch constitutes a sheath of the fiber.