JP2023543296A - Cut-resistant polyethylene yarn - Google Patents

Abstract

The present invention relates to cut-resistant polyethylene yarn, and more specifically, it is possible to manufacture products that have excellent cut resistance and wear resistance, and is suitable for use in high-risk industries and disaster sites. The present invention relates to a cut-resistant polyethylene yarn that can be used to produce textile products that are practically applicable.

Description

The present invention relates to a cut-resistant polyethylene yarn, and more particularly to a cut-resistant polyethylene yarn that can produce products that have excellent cut resistance and excellent abrasion resistance.

Workers in high-risk industrial sectors, such as metal and glass processing workshops, meatpacking workshops, etc., or people in the security and disaster sector, such as police, military or firefighters, are exposed to dangerous weapons such as knives or sharp cutting tools. Wear cut-resistant gloves or clothing to protect yourself.

Generally, products made of high-strength spun yarns such as aramid fibers have been developed as a means of imparting cut resistance, but they must have sufficient cut resistance to be used in high-risk workplaces. could not. On the other hand, various products using metal threads have been developed, but due to their lack of flexibility, they cannot be practically applied to work sites where workers often use their hands.

Therefore, as disclosed in Japanese Patent Publication No. 2002-180324, gloves using polyethylene fibers having high elastic modulus and strength have been proposed, but the cut resistance is substantially lower than that of the high-risk group. The disadvantage is that it is not good enough to be used in industrial sites, and its usability is poor.

In addition, polyethylene fibers developed with emphasis on improving strength tend to fuzz when manufactured and used as protective products, making it difficult to use repeatedly over long periods of time. Ta.

An object of the present invention is to provide a polyethylene yarn that has excellent cut resistance and improved abrasion resistance.

The cut-resistant polyethylene yarn according to the present invention has a storage modulus of 10 Pa to 100 Pa when the angular frequency is 0.1 rad/s in a graph of the storage modulus (G') according to the angular frequency (ω). When the angular frequency is 1 rad/s, the storage modulus is 100 Pa to 1000 Pa, and in the graph of tan δ according to the angular frequency (ω), when the angular frequency is 0.1 rad/s, tan δ is is 9 or more.

In the cut-resistant polyethylene yarn according to an embodiment of the present invention, polyethylene has an angular frequency of 0.1 rad/s in a graph of the loss modulus (G'') depending on the angular frequency (ω). At some point, the loss modulus is 100 Pa to 700 Pa, and a point where the loss modulus is 1000 Pa may appear in an area where the angular frequency is 0.25 to 0.5 rad/s.

The cut-resistant polyethylene yarn according to an embodiment of the present invention has polyethylene when the angular frequency is 0.1 rad/s in the graph of complex viscosity (η*) that depends on the angular frequency (ω). The average slope may be between 3000 Pa·s and 6000 Pa·s, and the average slope may be between -1000 and -300 in the angular frequency range between 0.1 rad/s and 1 rad/s.

The cut-resistant polyethylene yarn according to an embodiment of the present invention may have a fineness of 1 to 3 DPF (Denier Per Filament).

The cut-resistant polyethylene yarn according to an embodiment of the present invention has the following properties when the complex shear modulus (G*) is 350 to 1000 Pa in the graph of the phase angle depending on the complex shear modulus (G*). The phase angle may be between 75 and 90 degrees.

The cut-resistant polyethylene yarn according to an embodiment of the present invention may have a fuzz generation rate of 20 EA/50,000 m or less.

The present invention is a cut-resistant raw fabric containing the above-mentioned cut-resistant polyethylene yarn.

In the cut-resistant original fabric according to an embodiment of the present invention, the original fabric may have a cut resistance of 5.5N or more as measured according to the ISO13997:1999 standard.

The present invention is a protective product containing the above-mentioned cut-resistant polyethylene raw fabric.

A protective article according to an embodiment of the invention may be a cut resistant glove.

Since the cut-resistant polyethylene yarn according to the present invention has excellent cut resistance, it is possible to produce textile products that are substantially applicable to high-risk industries and disaster sites.

Furthermore, the cut-resistant polyethylene yarn according to the present invention allows production of products with high abrasion resistance.

1 is a graph (1) of measurement results of rheological properties of cut-resistant polyethylene yarn according to an embodiment of the present invention. 2 is a graph (2) of the measurement results of the rheological properties of the cut-resistant polyethylene yarn according to an embodiment of the present invention. FIG. 3 is a graph (3) of the measurement results of the rheological properties of the cut-resistant polyethylene yarn according to an embodiment of the present invention. FIG. FIG. 4 is a graph (4) of the measurement results of the rheological properties of the cut-resistant polyethylene yarn according to an embodiment of the present invention. FIG. 5 is a graph (5) of the measurement results of the rheological properties of the cut-resistant polyethylene yarn according to an embodiment of the present invention.

Unless otherwise defined, technical and scientific terms used herein have the meanings commonly understood by one of ordinary skill in the art to which the invention pertains, and the terms used herein have the meanings commonly understood by one of ordinary skill in the art to which the invention pertains, and the terms used in the description below and in the accompanying drawings In the following, explanations regarding known functions and configurations, which may unnecessarily obscure the gist of the present invention, will be omitted.

Also, as used herein, the singular form may be intended to include the plural form as well, unless the context dictates otherwise.

In addition, in this specification, units used without specific reference are based on weight, and as an example, a unit of % or a ratio means a weight % or a weight ratio, and a weight % is a weight % unless otherwise defined. , refers to the percentage by weight of any one component in the total composition.

Also, as used herein, numerical ranges include lower and upper limits, all values within the range, increments logically derived from the form and width of the range defined, and all limited values within the range. It includes all possible combinations of values and upper and lower limits of numerical ranges defined in different forms. In the present specification, defined numerical ranges include values outside the numerical range that may occur due to experimental error or rounding of values, unless otherwise defined.

As used herein, the term "comprises" is an open-ended statement that has the same meaning as "comprises," "contains," "has," or "features," and in addition, It does not exclude elements, materials, or steps not listed.

Cut resistance refers to durability against being cut by the blade of a knife or an object with a sharp part such as a blade, and is used in high-risk industrial fields such as metal and glass processing workplaces and meatpacking workplaces. Workers in the security and disaster fields, such as police, military, or firefighters, should wear cut-resistant gloves or clothing to protect themselves from deadly weapons such as knives or sharp cutting tools. There is.

Although cut-resistant fiber products have been developed using polyethylene fibers with high elastic modulus and strength, their cut-resistant properties are not good enough to be used in high-risk industrial sites. However, it has the disadvantage of being inferior in terms of usability.

In addition, products manufactured from polyethylene fibers developed with emphasis on improving strength have low abrasion resistance, making them prone to fluffing and making it difficult to use them repeatedly over long periods of time.

Therefore, as a result of long-term in-depth research to develop polyethylene yarn with excellent cut resistance and abrasion resistance, the applicant found that polyethylene yarn with specific rheological properties has excellent cut resistance. We have discovered that it is possible to manufacture a product that has both abrasion resistance and excellent abrasion resistance, and as a result of in-depth research on this, we have completed the present invention.

In this specification, polyethylene filament refers to monofilament and multifilament manufactured from polyethylene chips through processes such as spinning and drawing. As an example, the polyethylene filament may include 40-500 filaments each having a fineness of 1-3 denier, and may have a total fineness of 100-1,000 denier.

As used herein, rheological properties refer to storage modulus (G'), loss modulus (G''), tan δ, complex viscosity (η*), and phase angle (°); , unless otherwise defined, rheological properties can be measured using a DHR-2 (TA Instrument). The geometry used in the measurements was a parallel plate (PP), and the storage modulus (G'), loss modulus (G''), tan δ, and complex viscosity depend on changes in angular velocity. (η*), and measure the phase angle. Unless otherwise defined, measurements of rheological properties are carried out at a temperature of 250°C under a nitrogen atmosphere, with sample dimensions of 25 mm diameter, 1.0 mm gap point, and 10% deformation. be able to.

In the graph of the storage modulus (G') depending on the angular frequency (ω), the polyethylene fiber of the present invention has a storage modulus of 10 Pa to 100 Pa when the angular frequency is 0.1 rad/s. , when the angular frequency is 1 rad/s, the storage modulus is 100 Pa to 1000 Pa, and in the graph of tan δ that depends on the angular frequency (ω), the angular frequency (ω) is 0.1 rad/s. Sometimes tan δ can be 9 or more. Such polyethylene fibers can be manufactured into products having not only excellent cut resistance but also excellent abrasion resistance.

The cut resistance of the product containing the polyethylene yarn according to the present invention is determined not only by the strength of the polyethylene yarn but also by the slippiness of the polyethylene yarn. The property of sliding along the surface of the yarn without getting caught when passing over the yarn, and the rolling property of the yarn, i.e. when a sharp tool such as a knife blade passes over the yarn. It can be determined by the characteristic of twisting or winding around the longitudinal axis of the yarn.

The polyethylene yarn according to the present invention has the above-mentioned ranges in the graph of the storage modulus and tan δ that depend on the angular frequency, so it has excellent sliding properties and rolling properties, and has excellent cut resistance. enables the production of products that demonstrate

Specifically, in the graph of the storage modulus (G') that depends on the angular frequency (ω), when the angular frequency is 0.1 rad/s, the storage modulus is 20 Pa to 80 Pa, more specifically, can be 30Pa to 50Pa. Here, the storage modulus may have a positive (+) slope on average. Specifically, it may have an average positive (+) slope in the angular frequency range of 0.1 rad/s to 1000 rad/s. A yarn having such physical properties exhibits sufficient elasticity to have cut resistance and can have relatively excellent strength. Specifically, in the graph of the storage modulus depending on the angular frequency, when the angular frequency (ω) and loss modulus (G'') values are converted into log values, the angular frequency (logω) is 0. The average slope of the storage modulus (logG') in the interval of ~1 rad/s may be 0.9 to 1.6, specifically 1.1 to 1.5.

If the storage modulus is larger than the above range, the strength will improve, but the stiffness will also increase, and the fabric will become stiff when it is woven or knitted into a raw fabric, which can be processed into the desired product. This can cause inconvenience to the wearer of the product.

At this time, in the graph of tan δ depending on the angular frequency (ω), tan δ may have a negative (-) slope on average, and more specifically, 0.1 rad/s to 1000 rad/s. It may have an average negative (-) slope in the interval. That is, the polyethylene fiber according to the present invention has a slope value with a relatively high absolute value in a graph of tan δ that depends on the angular frequency (ω), and unlike other polyethylenes, does not form an inflection point. This means that such a polyethylene fiber exhibits relatively high viscosity compared to elasticity. In detail, it means that even at low shear stress, the entanglements or gels between polymer chains are easily oriented in the direction of flow; Virtually non-existent. By having such rheological properties, the yarn can prevent the formation of fluff during stretching, since the number of gels is substantially absent or very low.

Here, in the graph of tan δ depending on the angular frequency (ω), when the angular frequency is 0.1 rad/s, the raw yarn has a tan δ of 9 or more and less than 15, specifically 9 to 12. Possible, but not limited to this.

The angular frequency at which the tan δ value is 1 may be 200 to 500 rad/s, specifically 250 to 400 rad/s. Since the angular frequency range where the tan δ value is 1 is relatively large, it has better viscosity than the polyethylene yarn commonly used in the industry, and there is almost no entanglement between polyethylene polymer chains. This may be due to the excellent alignment of polymer chains. Such raw yarn has excellent alignment between polymer chains, making it possible to produce a raw fabric with better sliding and rolling properties. Fabrics made from such raw yarns have excellent cut resistance, so even when external force is repeatedly applied by the blade of a knife or a sharp object, the fabric will be damaged due to the pilling phenomenon in which fuzz is generated. can be prevented from being damaged.

In the graph of the loss modulus (G'') depending on the angular frequency (ω), the polyethylene yarn has a loss modulus of 100 Pa to 700 Pa when the angular frequency is 0.1 rad/s, specifically may be 200 Pa to 500 Pa, and a point with a loss modulus of 1000 Pa may appear in the angular frequency range of 0.25 rad/s to 0.5 rad/s.

In addition, in the graph of the loss modulus depending on the angular frequency, when the angular frequency (ω) and loss modulus (G'') values are converted into log values, the angular frequency (logω) is 0 to 1 rad. The average slope of the loss elastic modulus (logG'') in the interval of /s may be 0.75 to 0.9.

Also, in the graph of complex viscosity (η*) that depends on the angular frequency (ω), when the angular frequency is 0.1 rad/s, it is 3000 Pa・s to 6000 Pa・s, specifically 3700 Pa・s. ~5000 Pa·s, and the average slope may be −1000 to −300, specifically −800 to −500 in the angular frequency range of 0.1 rad/s to 1 rad/s.

In addition, in the graph of the phase angle (°) depending on the complex shear modulus (G*), when the complex shear modulus (G*) is 350 to 1000 Pa, the phase angle is 60 to 90°, specifically can be between 75 and 90°.

By having the loss modulus and complex viscosity as described above, the present invention can have a melt viscosity that is easy to melt-spun, and can suppress the occurrence of defects during the spinning process.

The polyethylene yarn according to the present invention has a molecular weight of 80,000 g/mol to 180,000 g/mol, specifically 100,000 g/mol to 170,000 g/mol, more specifically 120,000 g/mol to 160 g/mol, It may have a weight average molecular weight (Mw) of 000 g/mol.

Further, the polyethylene yarn may be high-density polyethylene (HDPE) having a density of 0.941 to 0.965 g/cm ³ and a crystallinity of 55 to 85%, preferably 60 to 85%. I can do it.

Further, the polyethylene yarn may have a polydispersity index (PDI) of more than 5 and less than 9. The polydispersity index (PDI) is the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) (Mw/Mn), and is also referred to as the molecular weight distribution index (MWD). If the PDI is less than 5, the fluidity is poor due to the relatively narrow molecular weight distribution, the processability during melt extrusion is low, and thread breakage due to uneven discharge is caused during the spinning process. . On the other hand, if the PDI exceeds 9, the melt flowability and processability during melt extrusion are improved due to the wide molecular weight distribution, but the final product contains too much low molecular weight polyethylene. The tensile strength of the polyethylene yarn obtained may be reduced.

Such a polyethylene yarn of the present invention may have a tensile strength of 3.5 to 8.5 g/de, a tensile modulus of 15 to 80 g/de, and an elongation at break of 14 to 55%. If the tensile strength exceeds 8.5 g/de, the tensile modulus exceeds 80 g/de, or the elongation at break is less than 14%, the weavability of the polyethylene yarn is not only poor; , the raw fabric produced using it becomes excessively stiff, causing inconvenience to the user. On the other hand, if the tensile strength is less than 3.5 g/de, the tensile modulus is less than 15 g/de, or the elongation at break is more than 55%, then the When a user uses a raw fabric continuously, fuzz is induced in the raw fabric.

The polyethylene yarn of the present invention may have a circular cross section or a non-circular cross section, but preferably has a circular cross section for excellent sliding properties.

In addition, the polyethylene yarn of the present invention has a strength of 11 g/d or more, specifically 13 g/d or more so that products manufactured using the yarn can have a cut resistance index of 5 or more. I can do it.

The method for producing the yarn of the present invention can be used without limitation as long as it is a method for producing yarn using polyethylene that is well known in the art. Specific examples include: melting a polyethylene chip to obtain a polyethylene melt; extruding the polyethylene melt through a nozzle having a plurality of nozzle holes; cooling a plurality of filaments; gathering the cooled plurality of filaments to form a multifilament yarn; and drawing and heat-setting the multifilament yarn at a total draw ratio of 5 to 20 times. and winding the drawn multifilament yarn. Here, the stretching step is performed in multi-stage stretching, and the relaxation rate during the last stretching of the multi-stage stretching may be 3% to 8% or less, but is not limited thereto. The relaxation rate during the final stretching refers to the relaxation rate during the final stretching after stretching and before winding.

The polyethylene melt is conveyed by a screw in the extruder to a die having a plurality of nozzle holes, and then extruded through the nozzle holes. The number of nozzle holes of the nozzle can be set according to the DPF (denier per filament) and total fineness of the yarn to be manufactured. As one specific example, the die 200 may have 40 to 500 nozzle holes to produce yarn having a total fineness of 1 to 3 DPF and 100 to 1,000 denier.

The melting process in the extruder and the extrusion process through the die may be carried out at 150-315°C, preferably 250-315°C, more preferably 260-290°C. If the spinning temperature is less than 150° C., spinning may be difficult because uniform melting of the polyethylene chips may not occur due to the low spinning temperature. On the other hand, if the spinning temperature exceeds 315° C., thermal decomposition of the polyethylene is caused, which may make it difficult to develop high strength.

The filament may be cooled by air cooling. For example, cooling of the filament can be performed at 15-40° C. using cooling air at a wind speed of 0.2-1 m/sec. If the cooling temperature is less than 15°C, the elongation may be insufficient due to supercooling, and yarn breakage may occur in the subsequent drawing process, and if the cooling temperature exceeds 40°C, the elongation may be insufficient due to non-uniform solidification. The fineness deviation between the filaments becomes large, and yarn breakage may occur during the drawing process.

Before forming the multifilament yarn, an oiling process may be performed to apply an oil to the cooled filaments using an oil roller (OR) or an oil jet. The oiling step may be performed using an MO (metered oiling) method.

Furthermore, before the multifilament yarn is wound up in a winder, an interlacing step using an interlacing device may be further performed in order to improve the bundling properties and weavability of the polyethylene yarn.

The polyethylene fiber produced by such a method can be knitted or woven to produce a raw fabric having cut resistance.

Specifically, the polyethylene raw fabric according to the present invention can be knitted as a covered yarn. The covered yarn is not limited as long as it contains the polyethylene yarn of the present invention, but as one specific example, the covered yarn includes the polyethylene yarn of the present invention and a polyurethane yarn (e.g., Spandex) surrounding the polyethylene yarn in a spiral shape. and a polyamide yarn (for example, nylon 6 or nylon 66 yarn) surrounding the polyethylene yarn in a spiral manner. Depending on the properties of the intended product, polyester yarns (eg, PET yarns) may be included instead of polyamide yarns.

Here, the weight of the polyethylene yarn may be 45 to 85% of the total weight of the covered yarn, and the weight of the polyurethane yarn may be 5 to 30% of the total weight of the covered yarn. The weight of the polyamide or polyester yarn may be 5 to 30% of the total weight of the covered yarn, but is not limited thereto.

Meanwhile, the raw fabric according to the present invention may be a woven or knitted fabric having a weight per unit area (ie, areal density) of 150 to 800 g/m ² . If the areal density of the original fabric is less than 150 g/ ^m2 , the density of the original fabric will be insufficient and many voids will exist within the original fabric, but such voids will reduce the cut resistance of the original fabric. Decreases sex. On the other hand, if the areal density of the raw fabric exceeds 800 g/ ^m2 , the raw fabric will become extremely stiff due to the excessively dense structure, causing problems in the tactile sensation felt by the user. However, the high weight causes problems in use.

Such raw fabric can be processed into products that require excellent cut resistance. The product can be any conventional textile product, but preferably can be a protective glove or garment for performing a protective function on the human body.

The protective product of the present invention has excellent cut resistance (Cut Load) of 5.5N or more, more preferably 5.6N to 9N, and 5gf or less, more preferably 2 to 5gf. By having a low bending resistance, it can exhibit excellent wearing comfort.

Hereinafter, the present invention will be explained in more detail with reference to Examples. However, the following examples are merely a reference for explaining the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless defined differently, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention. Further, in the specification, units of additives not specifically described may be % by weight.

[Measurement of rheological properties of yarn]
The rheological properties were measured using DHR-2 (TA Instrument), and the geometry used for the measurement was a plate-plate (parallel plate, PP), and the storage modulus (G'), which depends on the change in angular velocity, ), loss modulus (G''), tan δ, complex viscosity (η*), and phase angle (°) were measured. The measurement was performed at a temperature of 250° C. under a nitrogen atmosphere, and the measurement standards (Sample Dimension) were a diameter of 25 mm, a gap point of 1.0 mm, and a deformation rate of 10%.

1 to 5 show graphs of the measurement results of the rheological properties of Example 1 and Comparative Example 1.

Specifically, FIG. 1 shows the storage modulus (G') of Example 1 and Comparative Example 1, FIG. 2 shows the loss modulus (G''), FIG. 3 shows the tan δ, FIG. 4 shows the complex viscosity (η*), FIG. 5 shows the measurement results of the phase angle (°).

[Measurement of physical properties of protective gloves]
*Cut Resistance
The cut resistance of the protective gloves was measured according to the ISO 13997:1999 standard.

*Stiffness (gf)
After taking a test piece (width: 60 mm, length: 60 mm) from the palm of a protective glove, the bending resistance of the test piece was measured in accordance with section 38 of ASTM D885/D885M-10a (2014). The measuring device was as follows.

(i) Universal testing machine (CRE-type Tensile Testing Machine; model: INSTRON 3343)
(ii) Loading Cell, 2KN [200kgf]
(iii) Specimen holder: Specimen holder as specified in section 38.4.3; (iv) Specimen depressor: Specimen depressor as specified in section 38.4.4.

Specifically, the outer surface of the glove of the test specimen faces upward, the inner surface of the glove faces downward, and the side of the glove adjacent to and opposite the finger (i.e., the side of the glove adjacent to the wrist) faces the test specimen. The test piece was placed in the center of the test piece holder so that it was directly supported by the holder. The test piece remained flat without bending. At this time, the distance between the specimen supporting part of the specimen holder and the depressing part of the specimen holder was 5 mm. Next, the maximum strength was measured while raising the test piece holder to 15 mm with the test piece holder left unmoved.

*Evaluation of abrasion resistance The abrasion resistance of the protective gloves was measured according to the ASTM-D 3884 standard. A Martindale abrasion tester was used as the evaluation equipment. The friction cloth used in this case was 320 Cw sandpaper, and the applied load was 500 g.

<Example 1>
A polyethylene multifilament interlaced yarn containing 240 filaments and a total fineness of 400 denier was produced.

Specifically, polyethylene chips were put into an extruder and melted. The polyethylene melt was extruded through a die with 240 nozzle holes. The filaments formed by being discharged from the nozzle hole of the spinneret were cooled by a cooling unit and then collected into a multifilament yarn by a collection machine. Next, the multifilament yarn was drawn and heat set by a drawing section.

The stretching step was performed in multi-stage stretching, and the relaxation rate during the last stretching of the multi-stage stretching was 8%. Next, the drawn multifilament yarn was entangled by an interlacing device at an air pressure of 6.0 kgf/cm ² and then wound into a winder. The winding tension was 0.6 g/d.

The rheological properties of the manufactured yarn were measured and are shown in Table 1 and FIGS. 1 to 5 below. In addition, the density, weight average molecular weight, and PDI of the manufactured yarn were analyzed and shown in Table 2 below.

Next, the PE yarns of Examples 1 to 3 and Comparative Examples 1 to 3 were covered with a 140-denier polyurethane yarn (Spandex) and a 140-denier nylon yarn in a spiral manner. produced yarn. The weight of the polyethylene yarn was 60% of the total weight of the covered yarn, and the weight of the polyurethane yarn and the nylon yarn was 20% of the total weight of the covered yarn. The covered yarn was knitted to produce protective gloves.

The physical properties of the manufactured protective gloves were measured and shown in Table 3 below.

<Examples 2-3 and Comparative Examples 1-3>
In Example 1, protective gloves were manufactured in the same manner as in Example 1, except that polyethylene yarn satisfying the physical properties shown in Tables 1 and 2 above was used.

According to Table 3, it can be confirmed that the protective gloves of Examples manufactured using the polyethylene fibers according to the present invention have excellent cut resistance and excellent abrasion resistance, and have low It was confirmed that the material had good bending resistance and had an improved wearing feeling compared to the comparative example. Although the present invention has been described above with reference to specific matters, limited examples, and drawings, this is only provided for a more general understanding of the present invention, and the present invention is not limited to the embodiments described above. Not limited to examples. Those with ordinary knowledge in the field to which the present invention pertains will be able to make various modifications and variations from this description.

Therefore, the idea of the present invention should not be limited to the described embodiments, and not only the scope of the claims described below, but also those having modifications equivalent or equivalent to the scope of the claims, All of these can be said to belong to the scope of the idea of the present invention.

Claims (10)

In the graph of the storage modulus (G') depending on the angular frequency (ω), when the angular frequency is 0.1 rad/s, the storage modulus is 10 Pa to 100 Pa, and the angular frequency is 1 rad/s. when the storage modulus is 100 Pa to 1000 Pa,
A cut-resistant polyethylene yarn having tan δ of 9 or more when the angular frequency is 0.1 rad/s in a graph of tan δ depending on angular frequency (ω). The polyethylene yarn has a loss modulus of 100 Pa to 700 Pa when the angular frequency is 0.1 rad/s in a graph of the loss modulus (G'') depending on the angular frequency (ω), The cut-resistant polyethylene yarn according to claim 1, wherein a point with a loss modulus of 1000 Pa appears in an angular frequency range of 0.25 to 0.5 rad/s. In the graph of the complex viscosity (η*) depending on the angular frequency (ω), the polyethylene yarn has a complex viscosity (η*) of 3000 Pa·s to 6000 Pa·s when the angular frequency is 0.1 rad/s, and the angular vibration The cut-resistant polyethylene yarn according to claim 1, having an average slope of -1000 to -300 in the range of several 0.1 rad/s to 1 rad/s. The cut-resistant polyethylene yarn according to claim 1, wherein the polyethylene yarn has a fineness of 1 to 3 DPF (Denier Per Filament). In the graph of the phase angle depending on the complex shear modulus (G*), the polyethylene yarn has a phase angle of 75 to 90° when the complex shear modulus (G*) is 350 to 1000 Pa. The cut-resistant polyethylene yarn according to claim 1. The cut-resistant polyethylene yarn according to claim 1, wherein the polyethylene yarn has a number of fluffs of 20EA/50,000m or less. A cut-resistant raw fabric comprising the cut-resistant polyethylene yarn according to any one of claims 1 to 6. The cut-resistant original fabric according to claim 7, wherein the original fabric has a cut resistance of 5.5N or more as measured according to the ISO13997:1999 standard. A protective product comprising the cut-resistant original fabric according to claim 7. 10. The protective product of claim 9, wherein the protective product is a cut resistant glove.