TWI513808B - A method for manufacturing a low surface energy fiber - Google Patents

Description

Manufacturing method with low surface energy fiber

The present invention relates to a method of producing a fiber, and more particularly to a method of manufacturing a fiber having a low surface energy.

In the past, fabrics with low surface energy (low surface tension) function are usually manufactured by applying a low surface energy additive to the fabric, such as coating, dipping, pressing, etc. to make low surface energy additives. It is attached to the fabric and then obtained by fixing the additive to the fabric at a heating temperature of about 100 to 210 °C.

Taiwan Patent Application No. 098110619 (hereinafter referred to as Patent Document 1) discloses a method for producing a water-repellent yarn by sequentially passing a yarn to be treated through a tank containing a water-repellent agent to adhere water. The agent is further passed through a heat treatment unit to fix the water repellent to the yarn to be treated to form a yarn having water repellency. However, the method needs to pass through the medicine tank unit and the heat treatment unit in sequence, resulting in long processing time and increased cost, and the water repellent is scorched on the heat treatment unit due to heat, and further, since the water repellent is only attached to the surface of the yarn, In subsequent processing (eg, yarn bonding), it may adhere to other yarns that are not desired to have water repellency.

In addition, Chinese Patent Application Publication No. CN101984154 (hereinafter referred to as Patent Document 2) discloses a method for producing a water-repellent polyester fiber by directly adding a water repellent or the like to a spinning oil agent, and making it in a melt spinning process. The water repellent is directly attached to the surface of the fiber to produce a fiber having water repellency. However, in the latter stage of the processing, the water-repellent agent attached to the surface of the fiber is easily adhered to the hot plate after being heated, thereby causing the pyrolysis which is difficult to clean and scrape, which not only causes damage to the hot plate equipment, but also causes the fiber to be heated. Both affect the quality of the fabric.

Further, in the above prior art, the water-repellent fibers/yarns obtained have been washed out after repeated washing, and the water-repellent agent attached to the surface of the fiber/yarn is easily washed out, specifically, AATCC (American) Association of Textile Chemists and Colorists) -135 standard water washing for about 20 times, the fiber water-repellent effect will be significantly worse.

In order to solve the above problems, the results of research and experiments by the present inventors provide a fiber having a low surface energy and a method for producing the same, which can improve the disadvantages of the conventional spinning manufacturing technology and are excellent at low manufacturing cost. Fiber for liquid and antifouling effects.

According to an embodiment of the present invention, there is provided a method for producing a low surface energy fiber comprising the steps of: formulating a thermoplastic polymer having a low surface energy additive of 0.1 to 30% by weight; and spinning the thermoplastic polymer The raw material was subjected to melt spinning, followed by elongation and false twist processing to obtain fibers having a surface tension of 25 to 72 dyne/cm.

According to still another embodiment of the present invention, there is provided a method for producing a low surface energy fiber, comprising the steps of: formulating a thermoplastic polymer having a low surface energy additive of 0.1 to 30% by weight; and spinning the thermoplastic polymer The silk raw material is melt-spun, extended and shaped to obtain a full-length yarn (FDY) having a surface tension of 25 to 72 dyne/cm.

According to still another embodiment of the present invention, there is provided a method for producing a low surface energy fiber, comprising the steps of: formulating a thermoplastic polymer having a low surface energy additive of 0.1 to 30% by weight; and spinning the thermoplastic polymer The silk raw material is subjected to melt spinning, multi-stage stretching and setting, and a high-strength industrial yarn (HTY) having a surface tension of 25 to 72 dyne/cm is obtained.

In the method for producing a low surface energy fiber of the present invention, since the low surface energy additive is added to the spinning raw material at the spinning raw material stage, it is not necessary to pass the water repellent medicine tank and the heat treatment unit as in Patent Document 1, and the processing can be shortened. In addition, unlike the patent document 1, the low surface energy additive of the present invention is mixed in the spinning raw material stage, and it is possible to avoid the yarn being used in the subsequent processing as in Patent Document 1. The water-repellent agent is applied to the surface of the wire, so that the yarn is heated by the heat-treating unit, and the water-repellent agent is heated and coked. However, it can be avoided that the film is adhered to during the post-spinning process as in Patent Document 2. The water repellent on the surface of the fiber is heated and adhered to the hot plate to cause scorch. Further, due to the surface tension of the produced fiber It has excellent liquid repellency and antifouling effect at 25~72 dyne/cm.

Additionally, the present invention also provides a fabric having low surface energy fibers, having low surface energy, and a fabric.

Figure 1 is a schematic diagram showing the measurement of the contact angle of the water droplets of the fabric.

In the present invention, the spinning raw material may be a thermoplastic polymer such as polyester, polyamide or polyolefin. Specifically, examples of the polyester-based polymer include polybutylene succinate (PBS), polyethylene terephthalate (PET), and polybutylene terephthalate (PBT). Polytrimethylene terephthalate (PTT), cationic dyeable polyester, environmentally friendly recycled PET, bio-PET and polylactic acid (PLA); polyamine-based polymers include nylon 6, nylon 66, nylon 46, etc. Further, examples of the polyolefin-based polymer include polyethylene (PE), polypropylene (PP), and the like.

The present invention is directed to the production of a low surface energy fiber as described below, and a specific low surface energy additive is added to the thermoplastic polymer prior to melt spinning the thermoplastic polymer. It is considered that the low surface energy additive added to the thermoplastic polymer must be prevented from being deteriorated by high temperature during the melt spinning process. Therefore, in the present invention, a fluorine-based additive having high temperature resistance is selected, and specifically, For example, model FC-L624 fluorine-based low surface energy additive manufactured by GOULSTON Corporation is used.

In the present invention, the content of the low surface energy additive added to the thermoplastic polymer is between 0.1% by weight and 30% by weight; when the content of the low surface energy additive is less than 0.1% by weight, the effect of reducing the surface energy of the fiber is insufficient; On the other hand, when the content of the low surface energy additive is higher than 30% by weight, although the effect on lowering the surface energy is good, the relative cost is increased and the production tends to be difficult.

In the present invention, in order to prepare a thermoplastic polymer containing 0.1% by weight to 30% by weight of a low surface energy additive as a spinning raw material, the method can be adopted as follows: in the process of manufacturing a thermoplastic polymer from a monomer, the addition is relative to the single The total surface amount is from 0.1% by weight to 30% by weight of the low surface energy additive to the monomer to be polymerized; or, the thermoplastic polymer particles having a specific content (for example, 1 to 60% by weight) of the low surface energy additive are The thermoplastic polymer particles containing no low surface energy additive are prepared by blending the concentration of the low surface energy additive after blending in an amount of 0.1 to 30% by weight.

The method for producing a low surface energy fiber of the present invention can be made to contain a low surface energy additive 0.1 to 30% by weight of the thermoplastic polymer raw material is spun from the spinning spun in a single spinning or composite spinning manner from a spinning machine at a spinning speed of 2,500 to 3,500 m/min (in the case of POY manufacturing) or a spinning speed of 3,500. ~6000m/min (in the case of HOY manufacturing), the coiling is performed, and then the coiling speed is 100-1300 m/min, the hot plate temperature is 60-400 °C, the twisting processing (DTY) or the winding speed is 100-800 m/min, Air false twisting (ATY) with a hot plate temperature of 60 to 400 ° C to produce fibers with low surface energy.

In addition, the method for manufacturing a low surface energy fiber of the present invention can also make a thermoplastic polymer raw material containing 0.1 to 30% by weight of a low surface energy additive from a spinning machine in a single spinning or a composite spinning manner in a molten state. The nozzle is spouted, and the thermoplastic polymer is melt-spun, extended and shaped at a spinning speed of 1000 to 6000 m/min, a stretching ratio of 1.0 to 10, an extension temperature of 25 to 200 ° C, and a setting temperature of 60 to 260 ° C to obtain a surface tension. Full extension wire (FDY) at 25~72 dyne/cm.

In addition, the method for manufacturing a low surface energy fiber of the present invention can also make a thermoplastic polymer raw material containing 0.1 to 30% by weight of a low surface energy additive from a spinning machine in a single spinning or a composite spinning manner in a molten state. The nozzle is spouted, and the thermoplastic polymer is stretched at a spinning speed of 1000 to 6000 m/min, an extension temperature of 25 to 200 ° C, and a setting temperature of 60 to 260 ° C, and the total stretching ratio is 1.0 to 10, and the surface tension is 25~. High-strength industrial yarn (HTY) of 72 dyne/cm.

In the process of manufacturing a fiber having low surface energy, the invention may additionally add other functional additives, such as a flame retardant, a heat storage heat retaining agent, an ultraviolet resist, an antistatic agent, a fluorescent whitening agent, an antibacterial agent, and a matting agent, as needed. Agent or color masterbatch, etc.

Further, in the method for producing a low surface energy fiber of the present invention, melt spinning may be utilized as needed to form a fiber having a circular, non-circular or composite cross section.

In addition, in the manufacturing method of the low surface energy fiber of the present invention, the dyed fiber can be obtained by the raw liquid dyeing method or the post-process dyeing method; the process conditions for the raw liquid dyeing and the post-process dyeing can be disclosed by the conventional techniques. By.

According to the method for producing a low surface energy fiber of the present invention, a long fiber product or a staple fiber product having a low surface energy can be produced as needed.

The low surface energy fibers obtained by the manufacturing method of the present invention may be separately formed into yarns having a low surface energy, or may be combined with other fibers to form a yarn having a low surface energy.

The present invention utilizes the previously produced nonwoven fabrics having low surface energy fibers or having low surface energy yarns to produce related fabrics by well known textile techniques.

The surface tension of a typical liquid is as follows: water 72 dyne/cm, wine 45 dyne/cm, milk 43 dyne/cm, peanut oil 40 dyne/cm, olive oil 32 dyne/cm, gasoline 28 dyne/cm; Surface energy fibers, low surface energy yarns and fabrics have good liquid repellency relative to these liquids due to surface tensions ranging from 25 to 72 dyne/cm.

[Examples]

Example 1

The polyethylene terephthalate (A) particles and the fluorine-containing low surface energy additive (GOULSTON company, product name FC-L624) 30 wt% of polyethylene terephthalate (B) particles according to A /B=90/10 ratio blending, melt spinning at 280 °C at a spinning speed of 2800 m/min, and then a twisting speed of 600 m/min, a hot plate temperature of 230 ° C, and a stretching ratio of 1.75. ) A fiber containing 3 wt% of a low surface energy additive was prepared. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Example 2

The polyethylene terephthalate (A) particles and the fluorine-containing low surface energy additive (GOULSTON company, product name FC-L624) 30 wt% of polyethylene terephthalate (B) particles according to A /B=90/10 ratio blending, melt spinning at 288 ° C at a spinning speed of 2800 m / min, and then a spinning speed of 4000 m / min, an extension temperature of 85 ° C, a setting temperature of 130 ° C and a stretching ratio of 2.1 full extension wire A fiber containing 3 wt% of a low surface energy additive was prepared by the process. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Example 3

The polyethylene terephthalate (A) particles and the fluorine-containing low surface energy additive (GOULSTON company, product name FC-L624) 30 wt% of polyethylene terephthalate (B) particles according to A After /B=90/10 ratio blending, a fiber containing 3 wt% of low surface energy additive was prepared at a melting temperature of 288 ° C at a spinning speed of 4500 m/min HOY. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Example 4

The polyethylene terephthalate (A) particles and the fluorine-containing low surface energy additive (GOULSTON company, product name FC-L624) 30 wt% of polyethylene terephthalate (B) particles according to A After /B=90/10 ratio blending, the HOY process was carried out at a melting temperature of 288 ° C at a spinning speed of 4500 m/min, and then subjected to an air false twisting process (ATY) at a take-up speed of 200 m/min. A fiber containing 3 wt% of a low surface energy additive. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Example 5

Polyethylene terephthalate (A) particles and fluorine-containing low surface energy additive (GOULSTON company, product name FC-L624) 50% by weight of polyethylene terephthalate (B) particles according to A /B=60/40 ratio blending, melt spinning at 280 °C at a spinning speed of 2600 m/min, and then a twisting speed of 600 m/min, a hot plate temperature of 230 ° C, and a stretching ratio of 1.8. ) A fiber containing 20% by weight of a low surface energy additive was prepared. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Example 6

66 g of succinic acid, 72.6 g of butanediol, and 3.05 g of a fluorine-containing low surface energy additive (product name FC-L624, manufactured by GOULSTON Co., Ltd.) were mixed, and polymerization was carried out at a polymerization temperature of 245 ° C to obtain a low surface energy of 3 wt%. The additive polybutylene succinate 102.5g was coiled at a spinning speed of 2600 m/min under a melt of 200 ° C, and then subjected to a coiling speed of 600 m/min, a hot plate temperature of 190 ° C, and a stretching ratio of 1.70. A process (DTY) was processed to produce a fiber containing 3 wt% of a low surface energy additive. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Comparative example 1

The 75D/72F polyethylene terephthalate false twist processing yarn was passed through a medicine tank containing a fluorine-based low surface energy additive (GOULSTON company, product name FC-L624) at a take-up speed of 700 m/min. The surface is adhered to the low surface energy additive, and then heat treated by a heat treatment at 150 ° C to fix the low surface energy additive on the false twisted textured yarn to form a false twisted textured yarn having a low surface energy. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

Comparative example 2

The polyethylene terephthalate as a spinning raw material was melt-spun at 288 ° C and a spinning speed of 3000 m/min, and then the resulting spinning was contained with a fluorine-based low surface energy additive (GOULSTON, manufactured by the company). The spinning oil of FC-L624) is oiled (oiling rate: 0.6%), and then made by the false twisting processing (DTY) with a coiling speed of 600m/min, a hot plate temperature of 230°C and a stretching ratio of 1.67. Aqueous fiber. The obtained fiber was woven into a woven fabric, and the surface tension value, the water droplet contact angle and the water repellency test characteristics of the fabric were measured, and the results are shown in Table 1.

The physical properties of the fabric obtained in the examples and comparative examples of the present invention were measured and evaluated in accordance with the following methods.

1. Water contact angle:

0.5 cc of water droplets were dropped on the surface of the fabric obtained in the examples and the comparative examples, and the contact angle (θ) between the water droplets and the fabric was measured, as shown in FIG.

2. Fabric surface tension test

Using inks having different surface tensions (commercial Dyne pens), respectively, about 10 cm ink marks were applied to the fabrics obtained in the examples and the comparative examples, and it was observed whether more than 90% of the ink marks shrinked and formed in 2 seconds. Drops, if any, change the ink with a lower surface tension and scratch and observe until the ink marks no longer shrink and ink drops appear, which is the surface tension corresponding to the fabric.

3. Water test:

The fabric obtained in the examples and the comparative examples was cut into a size of 180 mm × 180 mm, and the water-repellent test surface was fixed at a 45-degree angle to the collar provided on the susceptor, and 250 cc of water was flowed for 30 seconds. Over the surface of the fabric, the loop was removed from the pedestal and evaluated according to FTTSS-FA-011.

100 points: the surface is not wet

90 points: the surface is slightly moist

80 points: the surface is scattered and dripping

70 points: most of the surface is moist

50 points: all surfaces are moist

0 points: completely wet

4. Processing hot plate coke deposit accumulation

The accumulation of scorch after 1 day of operation of the heating unit (hot plate or hot wheel) used in each of the examples and the comparative examples was observed, and the evaluation method was as follows:

A lot of scorch appeared: ×

There is a small amount of scorch or no scorch: ○

The present invention has been described with reference to the embodiments, but the present invention is not limited to the embodiments, and various modifications and changes can be made therein without departing from the spirit of the invention. In the invention.

Claims (15)

A method for producing a low surface energy fiber, comprising the steps of: formulating a thermoplastic polymer containing 0.1 to 30% by weight of a low surface energy additive; and melt spinning the thermoplastic polymer as a spinning raw material, followed by stretching , false twist processing, the production of fibers with a surface tension of 25 ~ 72dyne / cm. A method for producing a low surface energy fiber, comprising the steps of: formulating a thermoplastic polymer containing 0.1 to 30% by weight of a low surface energy additive; and performing melt spinning, stretching and sizing using the thermoplastic polymer as a spinning raw material A fully stretched yarn (FDY) having a surface tension of 25 to 72 dyne/cm was obtained. A method for producing a low surface energy fiber, comprising the steps of: formulating a thermoplastic polymer containing 0.1 to 30% by weight of a low surface energy additive; and using the thermoplastic polymer as a spinning raw material for melt spinning, multi-stage stretching and Styling, high-strength industrial yarn (HTY) with surface tension between 25 and 72 dyne/cm. The method for producing a low surface energy fiber according to any one of claims 1 to 3, wherein the thermoplastic polymer containing 0.1 to 30% by weight of the low surface energy additive is a process for producing a thermoplastic polymer from a monomer. In the above, a low surface energy additive is added to the monomer in an amount of from 0.1% by weight to 30% by weight based on the total amount of the monomer, and polymerization is carried out. The method for producing a low surface energy fiber according to any one of claims 1 to 3, wherein the thermoplastic polymer containing 0.1 to 30% by weight of the low surface energy additive will have a low surface energy of 1 to 60% by weight. The thermoplastic polymer particles of the additive and the thermoplastic polymer particles not containing the low surface energy additive are obtained by blending the concentration of the low surface energy additive after blending in an amount of 0.1 to 30% by weight. The method for producing a low surface energy fiber according to any one of claims 1 to 3, wherein the low surface energy additive is a fluorine-based additive. A method of producing a low surface energy fiber according to any one of claims 1 to 3, wherein the melt spinning system forms a fiber having a circular, non-circular or composite cross section. The method for producing a low surface energy fiber according to any one of claims 1 to 3, wherein the melt spinning is one selected from the group consisting of a single spinning and a double spinning. Manufacturer having low surface energy fibers as claimed in any one of claims 1 to 3 The method is to obtain dyed fibers by means of dyeing of the original liquid or by post-process dyeing. The method for producing a low surface energy fiber according to any one of claims 1 to 3, wherein the thermoplastic polymer is a polyester, a polyamide or a polyolefin. The method for producing a low surface energy fiber according to claim 9, wherein the polyester is selected from the group consisting of polybutylene succinate (PBS) and polyethylene terephthalate (PET). One of a group consisting of polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), cationic dyeable polyester, environmentally friendly recycled PET, bio-PET, and polylactic acid (PLA) . A method of producing a low surface energy fiber according to claim 10, wherein the polyamine is selected from the group consisting of nylon 6, nylon 66, and nylon 46. A method for producing a low surface energy fiber according to claim 10, wherein the polyolefin is selected from the group consisting of PE and PP. A method for producing a low surface energy fiber according to claim 1, wherein the fiber obtained by the stretching is a semi-stretched yarn (POY) or a high-directed yarn (HOY). The manufacturing method of the low surface energy fiber according to the first aspect of the patent application, wherein the false twist processing is a false twist textured yarn (DTY) processing or an air false twist textured yarn (ATY) processing.