KR20230096723A - Modified Corss-section Polyethylenefuranoate Fiber with Excellent Absorption-Dryproperty and Method for Preparing the Same - Google Patents

Abstract

The present invention relates to polyethylenefuranoate fibers made of polyethylenefuranoate resin, wherein the polyethylenefuranoate fibers are formed with a molded cross-section, and have excellent sweat perspiration and quick-drying properties.

Description

Modified Corss-section Polyethylenefuranoate Fiber with Excellent Absorption-Dryproperty and Method for Preparing the Same}

The present invention relates to polyester-based composite fibers containing polyethylenefuranoate, and relates to polyester-based composite fibers containing polyethylenefuranoate polymerized with furandicarboxylic acid and ethylene glycol, which are biomass-derived materials.

The discovery and application of eco-friendly materials has been steadily progressing as global warming accelerates. Polymers produced from fossil fuels, represented by petroleum, have limited reserves and emit high amounts of carbon dioxide, so it is urgent to replace them with eco-friendly materials. However, as existing eco-friendly materials have been developed with a focus on biodegradability, there are many disadvantages that require improvement for actual commercialization due to the inherent characteristics of the material, such as hydrolysis, poor radioactivity, and hard feel.

In recent years, the development of textile products using eco-friendly materials using biomass is actively progressing, and products are being released. Biomass is a general term for organic materials of living organisms existing in the natural world, but may refer to organic raw materials that can be substituted for petrochemical-derived materials through special energy or material circulation cycles.

Oil, which accounts for a large portion of the current energy source, is expected to be depleted in the near future, and research on the use of biomass has become active in countries around the world with the second oil crisis that began at the end of 1978 as an opportunity. .

Due to this social phenomenon, various fibers and textile materials are attracting attention in the textile industry with less environmental burden and using biomass.

For example, polytrimethylene terephthalate (PTT), a polyester-based compound, can be produced by esterification and condensation polymerization of terephthalic acid (TPA) or its ester-forming derivative and 1,3-propanediol. And technology for obtaining 1,3-propanediol from biomass is being developed.

In this regard, US Patent No. 8,415,496 synthesizes terephthalic acid from biomass muconic acid through the following route, and replaces terephthalic acid, which was a petrochemical-based raw material until now, as a raw material derived from biomass technology has been disclosed.

Polyethylenefuranoate (PEF) is in the limelight as a next-generation ester-based polymer material that can replace polyester (PET), which is currently widely used. ), polyethylenfranoate is an eco-friendly resin that uses furandicarboxylic acid (FDCA) produced by dehydrating, oxidizing, and refining sugar syrup extracted from plants.

Examples of commercially available eco-friendly resins include bio polyester polymerized using ethylene glycol derived from biomass and polytrimethylene terephthalate (PTT) polymerized with propanediol (PDO) extracted from corn. Yarn technology using them has already been commercialized, but it is a problem that they are not 100% biomass.

Japanese Laid-Open Patent Publication No. 2016-531186 discloses polyethylenefuranoate and a processing method thereof to provide an article such as a container formed of polyethylenefuranoate, but does not disclose various products using polyethylenefuranoate. is not

The present invention was invented to solve the above problems, and an object of the present invention is to provide a modified cross-section polyethylenefuranoate fiber using a polyethylenefuranoate (PEF) resin polymerized with a material derived from biomass.

In addition, an object of the modified cross-section polyethylenefuranoate fiber is to provide a Y-shaped or ┼-shaped cross-section and excellent sweat perspiration and quick-drying property.

The present invention provides polyethylenefuranoate fibers made of polyethylenefuranoate resin, wherein the polyethylenefuranoate fibers are formed with a molded cross-section, characterized in that they have excellent sweat perspiration and quick-drying properties.

In addition, the deformed cross-section is Y-shaped or ┼-shaped cross-section, and provides a deformed cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick-drying properties.

In addition, the unique viscosity of the polyethylenefuranoate resin is 0.75 dl/g or more, and provides a modified cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick drying properties.

In addition, the present invention is a melting step of melting a polyethylene furanoate resin having a moisture content of 30 ppm or less; A spinning step of fiberizing the molten polyethylenefuranoate resin into Y- or ┼-shaped cross-sectional fibers through a Y- or ┼-shaped spinneret at a spinning temperature of 220 to 270 ° C; Provided is a method for producing heteromorphic cross-section polyethylenefuranoate fibers having excellent sweat perspiration and quick drying properties, comprising a drawing step of drawing the spun polyethylenefuranoate fibers.

In addition, the drawing step provides a method for producing heteromorphic cross-section polyethylenefuranoate fibers having excellent sweat perspiration and quick drying properties, characterized in that the drawing is performed at a drawing temperature of 60 to 140° C. and a drawing ratio of 1.5 to 5.

As described above, the present invention is a hetero-shaped cross-section polyethylenefuranoate fiber prepared using a polyethylenefranoate (PEF) resin polymerized with a material derived from biomass, and has an environment-friendly effect.

In addition, the heteromorphic cross-section polyethylenefuranoate fiber of the present invention has a Y-shaped or ┼-shaped cross-section and has an effect of having sweat absorption and quick-drying properties.

Hereinafter, a preferred embodiment of the present invention will be described in detail. First of all, in describing the present invention, detailed descriptions of related known functions or configurations are omitted in order not to obscure the gist of the present invention.

As used herein, the terms 'about', 'substantially', and the like are used in a sense at or approximating that number when manufacturing and material tolerances inherent in the stated meaning are given, and are intended to convey an understanding of the present invention. Accurate or absolute figures are used to help prevent exploitation by unscrupulous infringers of the disclosed disclosure.

In the present invention, biomass-derived means not a raw material produced from petrochemical origin, but an organic raw material obtained from natural biomass.

The present invention relates to polyethylenefuranoate fibers made of polyethylenefuranoate resin, wherein the polyethylenefuranoate fibers are formed with a molded cross-section, and have excellent sweat perspiration and quick-drying properties.

The present invention relates to a polyester-based composite fiber containing a polyethylenefuranoate resin, characterized in that it contains a polyethylenefuranoate resin.

The polyethylene furanoate resin is a polymer resin prepared by polymerizing furandicarboxylic acid (FDCA) prepared using sugar syrup extracted from plants and ethylene glycol derived from biomass.

The intrinsic viscosity of the polyethylenefuranoate resin is preferably 0.75 dl/g or more. If the intrinsic viscosity is less than 0.75 dl/g, the rate of decrease in intrinsic viscosity may increase during or after the spinning process, and the cross-sectional property may decrease, resulting in the physical properties of the fiber. this may deteriorate.

It is preferable that the irregular cross-section is a Y-shaped or ┼-shaped cross-section in order to improve the perspiration properties through capillarity.

As described above, the modified cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick drying properties according to the present invention can be prepared by including a melting step, a spinning step, and a drawing step.

The melting step is a step of melting the polyethylenefuranoate resin at a melting temperature of about 250 to 280 ° C. and melting the polyethylenefuranoate resin having a moisture content of 30 ppm or less. may be, and the fiber properties may be deteriorated.

In the spinning step, it is preferable to spin at a spinning speed of 200 to 1,000 m/min.

The spinning step is a step of fiberizing into Y- or ┼-shaped cross-section fibers through a Y- or ┼-shaped spinneret at a spinning temperature of 220 to 270 ° C., and may be performed by a conventional polyester fiber manufacturing process.

The stretching step is a step of stretching the spun polyethylenefuranoate fibers, and the stretching may be performed using two or more godet rollers.

In the stretching step, it is preferable to perform stretching at a stretching temperature of 60 to 140 ° C. and a stretching ratio of 1.5 to 5.

As described above, the heteromorphic cross-section polyethylenefuranoate fibers having excellent sweat perspiration and quick-drying properties according to the present invention can be manufactured and formed into fabrics such as woven and knitted fabrics and used in various industrial fields.

Hereinafter, an example of a method for producing a modified cross-section polyethylenefuranoate fiber excellent in sweat perspiration and quick drying according to the present invention is shown, but the present invention is not limited to the examples.

Example

Polyethylenepyranoate resin having an intrinsic viscosity of 0.75 dl/g and a moisture content of less than 30 ppm was melted, and the melted polyethylenefuranoate resin was spun at a spinning temperature of about 250°C at a spinning speed of 450 m/min using a ┼-type spinneret to make fibers. .

The spun polyethylenefuranoate fiber was drawn at a draw ratio of 2.54 at a drawing temperature of 80 to 120° C. using two godet rollers to prepare a deformed cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick drying properties according to the present invention.

Comparative Example 1

It was prepared in the same manner as in Example 1, but a modified cross-section polyethylenefuranoate fiber was prepared using a polyethylenefuranoate resin having an intrinsic viscosity of 0.45 dl/g.

Comparative Example 2

It was prepared in the same way as in Example 1, but polyethylene furanoate fibers were prepared using a circular spinneret.

◎ Physical property evaluation method

Table 1 shows the spinnability, strength and elongation, and sweat perspiration and quick-drying properties of the polyethylenefuranoate fibers prepared in Examples and Comparative Examples 1 and 2 prepared above.

[Performance evaluation method]

- Spinning workability: Based on 24 hours, evaluated by the number of thread cuts during melt spinning

◎: 0 times of trimming, ○: 1~3 times of trimming △: 4 or more trimming times

- Strength and elongation: measured by ASTM D 3822 test method

- Sweat-absorbent and quick-drying properties: Using a one-plumb circular knitting machine, the manufactured filament fibers are made into a sock-shaped circular knitted fabric to evaluate the sweat-absorbing and quick-drying properties

① Absorption rate: After making a sample with a circular knitted fabric 20 cm wide and 20 cm long, leave one side of the sample immersed in water for 2.5 cm for 10 minutes, measure the height of the absorbed part three times, and absorb it as the average value. I found the speed (mm/min)

② Drying time: Evaluate the drying time of the absorbed moisture in accordance with KS K ISO 17617.

◎: Drying time less than 20 minutes, ○: Drying time more than 20 minutes and less than 30 minutes △: Drying time more than 30 minutes

division Example Comparative Example 1 Comparative Example 2 cross section cross cross circle PEF Chip IV (dl/g) 0.75 0.45 0.75 radioactive ◎ △ ◎ Strength (g/d) 2.8 1.9 2.9 Confidence (%) 33 28 32 Sweat-absorbent and quick-drying ◎ ○ △

As shown in Table 1, it can be seen that the examples of the present invention using polyethylenefuranoate resin having an intrinsic viscosity of 0.75 dl/g or more have excellent spinnability and excellent strength and elongation compared to Comparative Example 1, and the intrinsic viscosity is 0.75 It would be preferable to use a polyethylenefuranoate resin having a dl/g or higher.

In addition, the example of the heteromorphic cross-section polyethylenefuranoate fiber of the present invention has a ┼-shaped cross section and has excellent sweat perspiration and quick-drying properties, but Comparative Example 2 having a circular cross-section has low sweat perspiration and quick-drying properties. It can be seen that this is excellent.

Claims (5)

It is a polyethylene furanoate fiber formed from polyethylene furanoate resin,
The polyethylenefuranoate fiber is a heteromorphic cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick drying properties, characterized in that it is formed in a heterogeneous cross section.
According to claim 1,
The modified cross-section is a Y-shaped or ┼-shaped cross-section, characterized in that the modified cross-section polyethylenefuranoate fiber with excellent sweat perspiration and quick-drying properties.
According to claim 1,
The modified cross-section polyethylenefuranoate fiber having excellent sweat perspiration and quick drying properties, characterized in that the inherent viscosity of the polyethylenefuranoate resin is 0.75 dl/g or more.
A melting step of melting a polyethylene furanoate resin having a moisture content of 30 ppm or less;
A spinning step of fiberizing the molten polyethylenefuranoate resin into Y- or ┼-shaped cross-sectional fibers through a Y- or ┼-shaped spinneret at a spinning temperature of 220 to 270 ° C;
A method for producing heteromorphic cross-section polyethylenefuranoate fibers having excellent sweat perspiration and quick drying properties, comprising a drawing step of drawing the spun polyethylenefuranoate fibers.
According to claim 4,
The drawing step is a method for producing heteromorphic cross-section polyethylenefuranoate fibers with excellent sweat perspiration and quick-drying, characterized in that the drawing is performed at a drawing temperature of 60 to 140 ° C. at a draw ratio of 1.5 to 5.