Polyethylene fiber, preparation method thereof and textile

Abstract

The invention belongs to the technical field of textiles, and particularly relates to a polyethylene fiber, a preparation method thereof and a textile. The polyethylene fiber is prepared from raw materials including polyethylene slices and a modified microporous filler, the modified microporous filler is obtained by modifying a roasted microporous filler with a metal antibacterial agent, and the microporous filler is selected from at least one of sepiolite, diatomite, zeolite, attapulgite clay, bentonite, talc, kaolin and montmorillonite. According to the application, the microporous filler is calcined, so that moisture in the microporous filler can be removed, the structure of the microporous filler can be changed, the specific surface area of the microporous filler can be increased, and the prepared polyethylene fiber is endowed with moisture absorption and moisture conductivity; the metal antibacterial agent is used for modifying the roasted microporous filler, so that the specific surface area of the microporous filler can be further increased, and the moisture absorption and the moisture conductivity of the prepared polyethylene fiber are further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles, and in particular relates to a polyethylene fiber, a preparation method thereof and a textile. Background Art

[0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene monomers. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100℃~-70℃), and excellent chemical stability. Polyethylene polymer molecules are connected by carbon-carbon single bonds, can withstand most acid and alkali corrosion (not resistant to oxidizing acids), are insoluble in general solvents at room temperature, have low water absorption, and have excellent electrical insulation. High-density polyethylene refers to a polyethylene with a density of 0.941-0.965g / cm 2 High-density polyethylene is a non-polar thermoplastic resin with high crystallinity (85%-90%), linear structure, few branches, and little branching. It is a typical crystalline polymer. High-density polyethylene has the advantages of high operating temperature, excellent mechanical properties, excellent chemical resistance, good rigidity, and easy processing.

[0003] Polyethylene fiber (PF), also known as vinyl fiber, is a polyolefin fiber spun from high-density polyethylene with a linear structure. Polyethylene fiber has the advantages of high strength, low density, lightness, softness, wear resistance, acid and alkali corrosion resistance, and excellent insulation. It is widely used in textile fields such as bedding.

[0004] Fabrics made of polyethylene fiber will produce an instantaneous cool temperature of 1-2°C after contacting the skin, and can be used in the production of cooling mats. They have the advantages of being lightweight and having a high instantaneous coolness value. However, fabrics made of polyethylene fiber have poor hygroscopicity. During actual use, sweat on the skin surface cannot be discharged in time, resulting in damp fabrics, poor comfort, and poor user experience. Summary of the invention

[0005] In view of this, the present invention provides a polyethylene fiber, a preparation method thereof and a textile, so as to solve the problems that the fabric made of the above-mentioned polyethylene fiber has poor hygroscopicity, sweat on the skin surface cannot be discharged in time during actual use, resulting in damp fabric, poor comfort, poor user experience, etc.

[0006] To achieve the above solution, the technical solution of the present invention is as follows:

[0007] In the first aspect, the present application provides a polyethylene fiber, which is prepared from raw materials including polyethylene chips and modified microporous fillers, wherein the modified microporous fillers are obtained by modifying the calcined microporous fillers with metal antibacterial agents, and the microporous fillers are selected from at least one of sepiolite, diatomaceous earth, zeolite, attapulgite clay, bentonite, talc, kaolin and montmorillonite.

[0008] In the present application, the term "microporous filler" refers to a filler having a microporous structure, and micropores refer to pores with a diameter less than or equal to 2 nm.

[0009] In the present application, by calcining microporous fillers such as sepiolite, diatomaceous earth, zeolite, attapulgite clay, bentonite, talc, kaolin, montmorillonite, etc., the moisture in the microporous fillers can be removed, the structure of the microporous fillers can be changed, the specific surface area of ​​the microporous fillers can be increased, and the polyethylene fiber prepared therefrom can be given hygroscopicity and moisture conductivity; the calcined microporous fillers are modified by metal antibacterial agents, the specific surface area of ​​the microporous fillers can be further increased, and the hygroscopicity and moisture conductivity of the prepared polyethylene fiber can be further improved; the modified microporous fillers can destroy the arrangement structure of the polyethylene polymer chain segments, promote the relaxation and segmental movement of the polyethylene polymer chain segments, reduce the glass transition temperature and crystallinity of the polyethylene polymer matrix, increase the amorphous region, and improve the elasticity of the prepared polyethylene fiber.

[0010] Optionally, the metal antibacterial agent is selected from at least one of copper salts, zinc salts, silver salts, nickel salts and cobalt salts.

[0011] In the present application, the copper salt includes but is not limited to: copper chloride, copper sulfate, copper nitrate and the like.

[0012] In the present application, the zinc salt includes but is not limited to: zinc chloride, zinc sulfate, zinc nitrate and the like.

[0013] In the present application, the silver salt includes but is not limited to: silver nitrate and other substances.

[0014] In the present application, the nickel salt includes but is not limited to nickel chloride, nickel nitrate, nickel sulfate and the like.

[0015] In the present application, the cobalt salt includes but is not limited to: cobalt chloride, cobalt nitrate, cobalt sulfate and the like.

[0016] Optionally, the mass ratio of the metal antibacterial agent to the calcined microporous filler is 1-4:8, preferably 2-4:8.

[0017] Optionally, the particle size of the microporous filler is 80-120 mesh, preferably 90-120 mesh.

[0018] Optionally, the mass ratio of the polyethylene chips to the modified microporous filler is 100:6-14, preferably 100:8-14.

[0019] Optionally, the raw material further comprises a coupling agent and / or a compatibilizer.

[0020] In the present application, by adding a coupling agent, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction force between the polyethylene slice and the modified microporous filler can be enhanced, and the elasticity of the manufactured polyethylene fiber can be improved, and the hygroscopicity and moisture conductivity of the manufactured polyethylene fiber can be further improved; by adding a compatibilizer, the interfacial bonding strength between the polyethylene slice and the modified microporous filler can be improved, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction force between the polyethylene slice and the modified microporous filler can be enhanced, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, and the elasticity of the manufactured polyethylene fiber can be improved, and the hygroscopicity and moisture conductivity of the manufactured polyethylene fiber can be further improved.

[0021] Optionally, the coupling agent is selected from silane coupling agents.

[0022] In the present application, silane coupling agents include but are not limited to: aminosilane and other substances, and aminosilanes include but are not limited to: γ-aminopropyltriethoxysilane (i.e., silane coupling agent KH-550), N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (i.e., silane coupling agent KH-602) and other substances.

[0023] Optionally, the mass ratio of the coupling agent to the polyethylene chips is 0.5-1.5:100, preferably 0.5-1.5:100.

[0024] Optionally, the compatibilizer is selected from at least one of maleic anhydride grafted polyethylene, acrylic acid grafted polyethylene and acrylate grafted polyethylene.

[0025] In the present application, acrylate grafted polyethylene includes but is not limited to: methyl acrylate grafted polyethylene, methyl methacrylate grafted polyethylene, ethyl acrylate grafted polyethylene, propyl acrylate grafted polyethylene, butyl acrylate grafted polyethylene and the like.

[0026] Optionally, the mass ratio of the compatibilizer to the polyethylene chips is 0.5-1.5:100, preferably 0.5-1.5:100.

[0027] In a second aspect, the present application provides a method for preparing the polyethylene fiber as described above, comprising the following steps:

[0028] S1. calcining the microporous filler to obtain a calcined microporous filler;

[0029] S2. Using the metal antibacterial agent and the calcined microporous filler as raw materials, the modified microporous filler is prepared by coprecipitation;

[0030] S3. Using the polyethylene chips and the modified microporous filler as raw materials, preparing the polyethylene fiber.

[0031] Optionally, in step S1, the calcination temperature is 250-300°C, preferably 260-300°C; the calcination time is 0.5-1.5h, preferably 1-1.5h.

[0032] Optionally, in step S2, the modified microporous filler is prepared by a coprecipitation method, comprising: adding a saturated solution of a metal antibacterial agent and the calcined microporous filler into water, stirring, and drying to obtain the modified microporous filler.

[0033] Optionally, in step S2, stirring is performed at a temperature of 50-60°C, preferably, stirring is performed at a temperature of 55-60°C.

[0034] Optionally, in step S2, the stirring time is 4-6 hours, preferably 5-6 hours.

[0035] Optionally, in step S2, the drying temperature is 100-115°C, preferably 105-115°C.

[0036] Optionally, the polyethylene fiber is prepared by a melt spinning process.

[0037] In a third aspect, the present application also provides a textile, wherein the textile is made from the polyethylene fiber as described above or the polyethylene fiber prepared according to the method as described above.

[0038] In this application, textiles include but are not limited to: mats and other materials. DETAILED DESCRIPTION

[0039] The present invention is further described below through specific examples, but it should be pointed out that the specific material ratios, process conditions and results described in the embodiments of the present invention are only used to illustrate the present invention and cannot be used to limit the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

[0040] An embodiment of the present application provides a polyethylene fiber, which is prepared from raw materials including polyethylene chips and modified microporous fillers, the mass ratio of the polyethylene chips to the modified microporous filler is 100:6-14, the modified microporous filler is obtained by modifying a calcined microporous filler with a metal antibacterial agent, the particle size of the microporous filler is 80-120 mesh, the microporous filler is selected from at least one of sepiolite, diatomaceous earth, zeolite, attapulgite, bentonite, talc, kaolin and montmorillonite; the metal antibacterial agent is selected from at least one of copper salts, zinc salts, silver salts, nickel salts and cobalt salts, and the mass ratio of the metal antibacterial agent to the calcined microporous filler is 1-4:8.

[0041] In another embodiment of the present application, the raw materials also include a coupling agent and / or a compatibilizer, the coupling agent is selected from a silane coupling agent, the mass ratio of the coupling agent to the polyethylene chips is 0.5-1.5:100, the compatibilizer is selected from at least one of maleic anhydride grafted polyethylene, acrylic acid grafted polyethylene and acrylate grafted polyethylene, and the mass ratio of the compatibilizer to the polyethylene chips is 0.5-1.5:100.

[0042] Another embodiment of the present application also provides a method for preparing the polyethylene fiber as described above, comprising the following steps:

[0043] S1. calcining the microporous filler at 250-300 ° C for 0.5-1.5h to obtain a calcined microporous filler;

[0044] S2. Add a saturated solution of a metal antibacterial agent and a calcined microporous filler to water, stir at a temperature of 50-60 ° C for 4-6h, and dry at 100-115 ° C to obtain a modified microporous filler;

[0045] S3. Polyethylene fibers are prepared using polyethylene chips and modified microporous fillers as raw materials.

[0046] Another embodiment of the present application further provides a textile, which is made from the polyethylene fiber as described above or the polyethylene fiber prepared according to the method as described above.

[0047] The present invention is described in detail below by specific examples. It should also be understood that the following examples are only used to specifically illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention belong to the scope of protection of the present invention. The specific process parameters and the like in the following examples are also only examples within a suitable range, that is, those skilled in the art can make a selection within a suitable range through the description herein, and are not limited to the specific values ​​​​exemplified below.

[0048] It should be understood that in the following embodiments, only the specific cases of sepiolite as a microporous filler, cupric chloride as a metal antibacterial agent, and maleic anhydride grafted polyethylene as a compatibilizer are listed. Those skilled in the art may also select other microporous fillers other than sepiolite, such as diatomaceous earth, zeolite, attapulgite clay, bentonite, talc, kaolin, montmorillonite, etc., other metal antibacterial agents other than cupric chloride, such as copper sulfate, copper nitrate, zinc chloride, zinc sulfate, zinc nitrate, etc., silver nitrate, nickel chloride, nickel nitrate, nickel sulfate, cobalt chloride, cobalt nitrate, cobalt sulfate, etc., other compatibilizers other than maleic anhydride grafted polyethylene, such as methyl acrylate grafted polyethylene, methyl methacrylate grafted polyethylene, ethyl acrylate grafted polyethylene, propyl acrylate grafted polyethylene, butyl acrylate grafted polyethylene, etc.

[0049] Example 1

[0050] A polyethylene fiber is prepared by using the following raw materials and following the steps:

[0051] S1. calcining sepiolite at 300°C for 1h to obtain calcined sepiolite;

[0052] S2. A saturated solution of copper chloride and calcined sepiolite were added to water, the mass ratio of copper chloride to calcined sepiolite was 2:8, stirred at 55 ° C for 5 h, and dried at 110 ° C to obtain a modified sepiolite;

[0053] S3. Polyethylene chips, modified sepiolite, γ-aminopropyltriethoxysilane (i.e., silane coupling agent KH-550) and maleic anhydride grafted polyethylene (PE-g-MAH) are melt-blended and spun (the cross-section of the spinning hole is Y-shaped) in a mass ratio of 100:10:1:1 to obtain polyethylene fibers.

[0054] Example 2

[0055] A polyethylene fiber is prepared by using the following raw materials and following the steps:

[0056] S1. calcining sepiolite at 250°C for 1.5h to obtain calcined sepiolite;

[0057] S2. A saturated solution of copper chloride and calcined sepiolite were added to water, the mass ratio of copper chloride to calcined sepiolite was 4:8, stirred at 50 ° C for 6 h, and dried at 115 ° C to obtain a modified sepiolite;

[0058] S3. Polyethylene chips, modified sepiolite, N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (i.e., silane coupling agent KH-602) and maleic anhydride grafted polyethylene (PE-g-MAH) were melt-blended and spun (the cross-section of the spinning hole was Y-shaped) in a mass ratio of 100:14:0.5:1.5 to obtain polyethylene fibers.

[0059] Example 3

[0060] A polyethylene fiber is prepared by using the following raw materials and following the steps:

[0061] S1. calcining sepiolite at 300°C for 0.5h to obtain calcined sepiolite;

[0062] S2. A saturated solution of copper chloride and calcined sepiolite were added to water, the mass ratio of copper chloride to calcined sepiolite was 1:8, stirred at 60 ° C for 4 h, and dried at 100 ° C to obtain a modified sepiolite;

[0063] S3. Polyethylene chips, modified sepiolite, N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane (i.e., silane coupling agent KH-602) and maleic anhydride grafted polyethylene (PE-g-MAH) were melt-blended and spun (the cross-section of the spinning hole was Y-shaped) in a mass ratio of 100:6:1.5:0.5 to obtain polyethylene fibers.

[0064] Example 4

[0065] Polyethylene fibers were prepared in the same manner as in Example 1 except for the following conditions:

[0066] S3. The polyethylene chips, modified sepiolite and maleic anhydride grafted polyethylene (PE-g-MAH) were melt-blended and spun in a mass ratio of 100:10:1 (the cross section of the spinning hole was Y-shaped) to obtain polyethylene fibers.

[0067] That is, the difference between this embodiment and embodiment 1 is that γ-aminopropyltriethoxysilane (ie, silane coupling agent KH-550) is not added during the preparation of the polyethylene fiber filaments.

[0068] Example 5

[0069] Polyethylene fibers were prepared in the same manner as in Example 1 except for the following conditions:

[0070] S3. Polyethylene chips, modified sepiolite and γ-aminopropyltriethoxysilane (i.e., silane coupling agent KH-550) are melt-blended and spun (the cross-section of the spinning hole is Y-shaped) in a mass ratio of 100:10:1:1 to obtain polyethylene fibers.

[0071] That is, the difference between this embodiment and embodiment 1 is that maleic anhydride grafted polyethylene (PE-g-MAH) is not added during the preparation of polyethylene fiber filaments.

[0072] Comparative Example 1

[0073] Polyethylene fibers were prepared in the same manner as in Example 1 except for the following conditions:

[0074] S1. The polyethylene chips (derived from the same as in Example 1) are melt-spun (the cross section of the spinning hole is Y-shaped) to obtain polyethylene fibers.

[0075] Performance Testing

[0076] The moisture regain of the polyethylene fiber obtained in Example 1, Example 4, Example 5 and Comparative Example 1 was tested. The specific steps were as follows: 50 g of the sample was placed in an oven and dried to constant weight, the constant weight sample was subjected to moisture balance treatment in an environment of 20° C. and 65% RH for 48 h, the sample after moisture balance treatment was placed in an oven and weighed (M0), and dried at 105° C. to constant weight (M), according to the formula Calculate the moisture regain, as shown in Table 1; wash 50 times, and test the moisture regain again, the results are shown in Table 1;

[0077] According to GB T 14337-2008 Test Method for Tensile Properties of Chemical Staple Fibers, the elongation at break of the polyethylene fibers obtained in Example 1, Example 4, Example 5 and Comparative Example 1 was tested, and the test was performed 20 times in parallel, and the average value was taken as the test result. The results are shown in Table 2.

[0078] The polyethylene fibers prepared in Example 1, Example 4, Example 5 and Comparative Example 1 were respectively made into soft mats, and samples with a specification of 8 cm*8 cm were taken. A sodium chloride solution with a concentration of 9 g / L was used as a test liquid, and a Q290 liquid moisture management analyzer was used to detect the unidirectional transfer index of each sample in accordance with "GB / T 21655.2-2009 Evaluation of moisture absorption and quick-drying properties of textiles Part 2: Dynamic moisture transfer method". The unidirectional transfer index test results were rated according to the standard. The results are shown in Table 3, wherein a higher grade indicates better moisture absorption and quick-drying properties.

[0079] Table 1 Moisture regain test results

[0080] Group Moisture regain (before washing) Moisture regain (after washing) Example 1 0.85％ 0.78％ Example 4 0.76％ 0.70％ Example 5 0.72％ 0.74％ Comparative Example 1 0.48％ 0.41％

[0081] As shown in Table 1, the moisture regain of the polyethylene fiber of Example 1 is significantly increased compared with that of Comparative Example 1. The results show that in the present application, by calcining microporous fillers such as sepiolite, diatomaceous earth, zeolite, attapulgite, bentonite, talc, kaolin, and montmorillonite, the moisture in the microporous filler can be removed, the structure of the microporous filler can be changed, the specific surface area of ​​the microporous filler can be increased, and the polyethylene fiber can be given hygroscopicity; by modifying the calcined microporous filler with a metal antibacterial agent, the specific surface area of ​​the microporous filler can be further increased, and the hygroscopicity of the prepared polyethylene fiber can be further improved.

[0082] As shown in Table 1, compared with Example 4 (without the addition of γ-aminopropyl triethoxysilane) and Example 5 (without the addition of maleic anhydride grafted polyethylene), the moisture regain of Example 1 (with the addition of γ-aminopropyl triethoxysilane and maleic anhydride grafted polyethylene) is significantly improved. The results show that in this application, by adding a coupling agent, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the hygroscopicity of the polyethylene fiber prepared can be further improved; by adding a compatibilizer, the interfacial bonding strength between the polyethylene slice and the modified microporous filler can be improved, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the hygroscopicity of the polyethylene fiber prepared can be further improved.

[0083] Table 2 Elongation at break test results

[0084] Group Elongation at break Example 1 20.52％ Example 4 18.81％ Example 5 18.79％ Comparative Example 1 18.75％

[0085] It can be seen from Table 2 that the elongation at break of Example 1 is increased compared with Comparative Example 1. The results show that in the present application, the modified microporous filler prepared by introducing microporous fillers into polyethylene fibers can destroy the arrangement structure of polyethylene polymer segments, promote relaxation and segmental movement of polyethylene polymer segments, reduce the glass transition temperature and crystallinity of the polyethylene polymer matrix, increase the amorphous region, and thus improve the elasticity of the polyethylene fibers.

[0086] Compared with Example 4 (without the addition of γ-aminopropyltriethoxysilane) and Example 5 (without the addition of maleic anhydride grafted polyethylene), the elongation at break of Example 1 (with the addition of γ-aminopropyltriethoxysilane and maleic anhydride grafted polyethylene) is improved. The results show that in this application, by adding a coupling agent, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the elasticity of the polyethylene fiber prepared can be improved; by adding a compatibilizer, the interfacial bonding strength between the polyethylene slice and the modified microporous filler can be improved, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the elasticity of the polyethylene fiber prepared can be improved.

[0087] Table 3 Moisture absorption and quick drying test results

[0088] Group One-way transfer index Example 1 Level 5 Example 4 Level 4 Example 5 Level 4 Comparative Example 1 Level 1

[0089] As shown in Table 3, compared with Comparative Example 1, the one-way transfer index of Example 1 is significantly increased. The results show that in the present application, by calcining microporous fillers such as sepiolite, diatomite, zeolite, attapulgite, bentonite, talc, kaolin, montmorillonite, etc., the moisture of microporous fillers such as sepiolite, diatomite, zeolite, attapulgite, bentonite, talc, kaolin, montmorillonite, etc. can be removed, the structure of microporous fillers such as sepiolite, diatomite, zeolite, attapulgite, bentonite, talc, kaolin, montmorillonite, etc. can be changed, the specific surface area of ​​the microporous filler can be increased, and the polyethylene fiber can be given hygroscopicity and moisture conductivity; the microporous filler treated by calcining is modified by a metal antibacterial agent, the specific surface area of ​​the microporous filler can be further increased, and the moisture conductivity of the prepared polyethylene fiber can be further improved.

[0090] As shown in Table 3, compared with Example 4 (without the addition of γ-aminopropyltriethoxysilane) and Example 5 (without the addition of maleic anhydride grafted polyethylene), the one-way transfer index of Example 1 (with the addition of γ-aminopropyltriethoxysilane and maleic anhydride grafted polyethylene) is significantly improved. The results show that in this application, by adding a coupling agent, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the moisture conductivity of the polyethylene fiber prepared can be further improved; by adding a compatibilizer, the interfacial bonding strength between the polyethylene slice and the modified microporous filler can be improved, the interfacial tension between the polyethylene slice and the modified microporous filler can be reduced, the interaction between the polyethylene slice and the modified microporous filler can be enhanced, and the moisture conductivity of the polyethylene fiber prepared can be further improved.

[0091] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A polyethylene fiber, characterized in that The polyethylene fiber is prepared from raw materials including polyethylene chips and modified microporous fillers. The modified microporous fillers are obtained by modifying calcined microporous fillers with metal antibacterial agents. The microporous fillers are selected from at least one of sepiolite, diatomaceous earth, zeolite, attapulgite, bentonite, talc, kaolin and montmorillonite.

2. The polyethylene fiber according to claim 1, characterized in that The metal antibacterial agent is selected from at least one of copper salts, zinc salts, silver salts, nickel salts and cobalt salts; And / or, the mass ratio of the metal antibacterial agent to the calcined microporous filler is 1-4:

8.

3. The polyethylene fiber according to claim 1, characterized in that The particle size of the microporous filler is 80-120 meshes.

4. The polyethylene fiber according to claim 1, characterized in that The mass ratio of the polyethylene slice to the modified microporous filler is 100:6-14.

5. The polyethylene fiber according to claim 1, characterized in that The raw materials also include a coupling agent and / or a compatibilizer.

6. The polyethylene fiber according to claim 5, characterized in that The coupling agent is selected from silane coupling agents; And / or, the mass ratio of the coupling agent to the polyethylene chips is 0.5-1.5:

100.

7. The polyethylene fiber according to claim 5, characterized in that The compatibilizer is selected from at least one of maleic anhydride grafted polyethylene, acrylic acid grafted polyethylene and acrylate grafted polyethylene; And / or, the mass ratio of the compatibilizer to the polyethylene chips is 0.5-1.5:

100.

8. The method for preparing polyethylene fiber according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. calcining the microporous filler to obtain a calcined microporous filler; S2. Using the metal antibacterial agent and the calcined microporous filler as raw materials, the modified microporous filler is prepared by coprecipitation; S3. Using the polyethylene chips and the modified microporous filler as raw materials, preparing the polyethylene fiber.

9. The method for preparing polyethylene fiber according to claim 8, characterized in that: In step S1, the calcination temperature is 250-300°C, and the calcination time is 0.5-1.5h. And / or, in step S2, the modified microporous filler is prepared by coprecipitation method, including: adding a saturated solution of a metal antibacterial agent and the calcined microporous filler into water, stirring, and drying to obtain the modified microporous filler.

10. A textile, characterized in that: The textile is made from the polyethylene fiber according to any one of claims 1 to 7 or the polyethylene fiber prepared according to the method according to claim 8 or 9.