Comfortable quick-response antibacterial and antiviral fiber and preparation method therefor

Abstract

The present invention relates to a comfortable quick-response antibacterial and antiviral fiber and a preparation method therefor. The preparation method comprises: melt-blending polyester chips with antibacterial and antiviral masterbatches, spinning and forming the melt via a profiled spinneret plate having a relatively large specific surface area, and then drawing and setting. Compared with conventional antibacterial and antiviral fibers, the prepared comfortable quick-response antibacterial and antiviral fiber has improved functionality and comfort, the fiber has both good air permeability and moisture-wicking properties while being efficiently antibacterial and antiviral, which further expands the application in medical protective fiber products.

Description

Comfortable fast-response antibacterial and antiviral fiber and preparation method thereof

[0001] This application claims priority to Chinese patent application 2024113782142 with a filing date of September 30, 2024. This application incorporates the entirety of the aforementioned Chinese patent application. TECHNICAL FIELD

[0002] The present application belongs to the technical field of functional fibers, and relates to a comfortable fast-response antibacterial and antiviral fiber and a preparation method thereof. BACKGROUND

[0003] With the rapid progress of technology and the increasing awareness of people's health, functional textiles have not only become a part of fashion trends, but also an essential element for modern people to pursue a high-quality life. These textiles, by integrating advanced materials science and biotechnology, have achieved a leap from basic warmth to multiple health protection, bringing unprecedented comfort and safety to consumers' daily life. People are in contact with various microorganisms and viruses at all times, especially since the global pandemic in 2020, chronic infection or even death caused by bacteria or viruses is one of the most challenging threats faced by mankind. Therefore, textiles with antibacterial and antiviral functions are widely welcomed by consumers. Such textiles use natural or synthetic antibacterial agents such as nano-silver, quaternary ammonium salt, and chitosan, through physical adsorption, chemical bonding, or microcapsule embedding, effectively inhibiting or killing the growth of bacteria, viruses, and other microorganisms, reducing the risk of cross-infection, and are widely used in medical protective clothing, masks, home textiles (such as bed sheets, duvet covers, and towels), sports equipment, and children's clothing, etc. fields, building a solid defense for public health.

[0004] Polyester fiber (PET) as the main force in the textile industry, its wide application field and excellent performance make it occupies an important position in the market. However, the porous structure and easy adsorption of polyester fiber textiles also make it a breeding ground for microorganisms, which poses a potential threat to public health and personal health. Therefore, it is of great practical significance and broad application prospect to modify polyester fiber textiles with antibacterial and antiviral functions to prevent and reduce diseases or cross infection caused by microorganisms and viruses. CN117418327 discloses an antibacterial and antiviral fiber and its preparation method and application, a functional master batch is prepared by mixing and granulating high molecular guanidine salt, cationic antibacterial agent, TiO2 and amino silane coupling agent, and then melt spinning with resin to obtain antibacterial and antiviral fiber; the antibacterial and antiviral effect of the fiber on escherichia coli, staphylococcus aureus, candida albicans and H1N1 influenza virus reaches more than 99%. CN114875521 discloses a preparation method of antibacterial and antiviral polyamide 6 composite fiber prepared by loading nano Cu on TiO2, the prepared fiber has a breaking strength of 4.5 cN / dtex and an elongation at break of 30%, the antibacterial and antiviral effect on staphylococcus aureus, escherichia coli, candida albicans and H1N1 influenza virus reaches 99.1%, and the antibacterial and antiviral effect on staphylococcus aureus, escherichia coli, candida albicans and H1N1 influenza virus still reaches more than 97% after 50 times of washing, which has good washing resistance and high antibacterial and antiviral performance.

[0005] Whether inorganic or organic antibacterial and antiviral agents, their mechanism of action is to destroy their normal physiological functions through physical or chemical action, and then cause the death of bacteria or the inhibition of virus infection, so as to achieve good antibacterial and antiviral effect. However, polyester textiles, especially clothing products, often have problems such as stuffiness and poor air permeability during use, which is related to the fact that polyester molecular chains contain fewer hydrophilic groups. However, the stuffy and airtight environment also becomes a good environment for bacteria to breed, and if bacteria and viruses cannot be killed in time, secondary pollution will occur easily after adsorption or reproduction. Therefore, developing a new type of fiber product that can effectively inhibit the growth of microorganisms and significantly improve the wearing experience has become an important research direction of antibacterial and antiviral fibers.

[0006] SUMMARY

[0007] The purpose of the present application is to solve the problems existing in the prior art and provide a comfortable and fast-responding antibacterial and antiviral fiber and a preparation method thereof.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0009] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0010] As a preferred technical scheme,

[0011] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0012] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0013] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0014] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0015] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0016] The application discloses a preparation method of a comfortable quick-response antibacterial and antiviral fiber.

[0017] The process of preparing the comfortable quick-response antibacterial and antiviral fiber by melt blending and spinning as described above is that: the polyester chip and the antibacterial and antiviral master batch are sequentially melt-extruded by a screw extruder, spun, cooled, wound and formed to obtain the as-spun yarn.

[0018] The process parameters of melt blending and spinning in the process of preparing the comfortable quick-response antibacterial and antiviral fiber by melt blending and spinning as described above include: the temperature of the first zone of the screw is 275-285 DEG C, the temperature of the second zone is 280-290 DEG C, the temperature of the third zone is 285-295 DEG C, the temperature of the fourth zone is 290-300 DEG C, the temperature of the fifth zone is 285-295 DEG C, the temperature of the sixth zone is 280-290 DEG C, the temperature of the spinning box is 285-295 DEG C, the spinneret is one of seven-hole 396-hole, connected Wang 244-hole and rice-shaped 800-hole, the pump supply is 700-900 g / min, the pressure difference between the air inlet and the air return of the ring blowing is 600-750 Pa, and the winding speed is 950-1100 m / min.

[0019] The process of preparing the comfortable quick-response antibacterial and antiviral fiber by melt blending and spinning as described above is that: the as-spun yarn is gathered, drawn, tensioned and heat set, crimped, oiled, dried and cut to obtain the comfortable quick-response antibacterial and antiviral fiber.

[0020] The process parameters of melt blending and spinning in the process of preparing the comfortable quick-response antibacterial and antiviral fiber by melt blending and spinning as described above include: the oil bath temperature in the primary oil bath drawing is 60-65 DEG C, the primary drawing multiple is 2.8-3.2, the secondary drawing temperature is 100-120 DEG C, the secondary drawing multiple is 1.0-1.1, the total drawing multiple is 3.08-3.52, and the temperature of the tensioning and heat setting is 160-180 DEG C.

[0021] The application further provides the comfortable quick-response antibacterial and antiviral fiber prepared by the process of preparing the comfortable quick-response antibacterial and antiviral fiber as described above, which has a special-shaped structure, a larger specific surface area, a forming degree of greater than or equal to 85%, a linear density of 3.33-11.11 dtex, an antibacterial rate of greater than or equal to 99% for E. coli, Candida albicans and Staphylococcus aureus, an anti-influenza A H1N1 virus rate of greater than or equal to 99%, and a response time of less than or equal to 30 min.

[0022] As a preferred technical solution:

[0023] A comfortable quick-response antibacterial and antiviral fiber as described above has a fiber breaking strength of 3.5-4.5 cN / dtex, a breaking elongation of 28.2-43.5%, a defect content of 5-50 mg / 100 g, a moisture regain of 0.8-1.3%, a fiber air permeability of 100-200 mm / s, and a moisture permeability of 150-450 g / (m 2 ·24h).

[0024] Invention principle:

[0025] Through melt blending and spinning of polyester chips and antibacterial and antiviral master batches, the functional particles are uniformly dispersed in the fiber interior and surface. When bacteria or viruses contact the fiber surface, the antibacterial and antiviral active ingredients on the surface will rapidly act on the cell membranes of microorganisms. These active substances can penetrate the cell membranes of microorganisms, destroy the stability of their internal structure, and cause the death or inactivation of microorganisms. Especially for viruses, this mechanism can effectively destroy the envelope structure of viruses and prevent them from invading host cells. In addition to directly destroying the cell membranes of microorganisms, the antibacterial and antiviral active ingredients on the fiber surface can also bind to the metabolic products or toxins of microorganisms through chemical adsorption, thereby neutralizing their toxicity and reducing their harm to human cells. This mechanism further enhances the protective effect of the fiber, allowing it to remain highly efficient and stable in complex microbial environments. In addition, the larger specific surface area of the fiber provides more physical adsorption points for adsorbing and capturing bacteria and viruses. When the fiber contacts bacteria or viruses, it can quickly activate its antibacterial and antiviral mechanism, and this rapid response characteristic allows the fiber to effectively kill microorganisms in a very short time, thereby reducing the survival time and transmission risk of microorganisms on textiles.

[0026] Compared with round fibers, the anisotropic cross-section of the fiber, especially the seven-hole-shaped fiber, the connected king-shaped fiber, and the rice-shaped fiber of the present application, significantly increases the specific surface area and voids, increasing the moisture regain of the fabric and improving the moisture absorption capacity of the fiber. In addition, the fine grooves of the fiber allow the sweat and moisture on the skin surface to be instantly discharged through wicking, diffusion, and conduction, enhancing the sweat-wicking and moisture-conducting functions and air permeability of the fabric. Beneficial effects:

[0027] (1) The preparation method used in the present application has low requirements for production equipment and high efficiency, and can be produced on a large scale.

[0028] (2) The comfortable quick-response antibacterial and antiviral fiber prepared by the present application improves the functionality and comfort of conventional antibacterial and antiviral fibers. The fiber has high-efficiency antibacterial and antiviral properties while also having good air permeability and moisture absorption and sweat-wicking properties, further expanding the application of medical protective fiber products. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is an optical microscope photograph of a cross section of a comfortable fast-responding antibacterial and antiviral fiber prepared in Example 1.

[0030] Figure 2 is an optical microscope photograph of a cross section of a comfortable fast-responding antibacterial and antiviral fiber prepared in Example 2.

[0031] Figure 3 is an optical microscope photograph of a cross section of a comfortable fast-responding antibacterial and antiviral fiber prepared in Example 3. DETAILED DESCRIPTION

[0032] The application will be further described in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the application and not to limit the scope of the application. Furthermore, it should be understood that those skilled in the art can make various modifications or changes to the application after reading the content taught by the application, and these equivalent forms also fall within the scope of the appended claims.

[0033] The following are the test methods of the relevant performance indicators in each example and comparative example:

[0034] Intrinsic viscosity: tested in accordance with the GB / T14190-2017 standard.

[0035] Melting point: tested in accordance with the GB / T14190-2017 standard.

[0036] Breaking strength and elongation at break: determined in accordance with the GB / T14337-2022 standard, wherein the tensile speed is 30 mm / min.

[0037] Defect content: determined in accordance with the GB / T14339-2008 standard.

[0038] Irregularity: determined in accordance with the FZ / T50002-2013 standard.

[0039] Moisture regain: determined in accordance with the GB / T6503-2017 standard.

[0040] Antibacterial rate: determined in accordance with the GB / T20944.3-2008 standard.

[0041] Antiviral rate: determined in accordance with the GB / T43823-2024 standard.

[0042] Air permeability: determined in accordance with the GB / T5453-1997 standard.

[0043] Moisture permeability: determined in accordance with the GB / T12704.1-2009 standard.

[0044] Response time: According to GB / T20944.3-2008, GB / T43823-2024 standards for determination. After constant temperature culture for 5min, 10min, 15min, 20min, 25min, 30min, the number of bacteria colonies and virus activity were determined, and the time corresponding to the antibacterial rate and antiviral rate ≥99% was the response time.

[0045] Example 1

[0046] A comfortable type of fast response antibacterial and antiviral fiber and its preparation method, the specific steps are as follows:

[0047] (1) Preparation of raw materials;

[0048] Polyester chips: the manufacturer is China Jiangsu Shenghong Science and Technology Co., Ltd., the brand is M02; the intrinsic viscosity of the polyester chips is 0.65 dL / g, and the melting point is 256℃.

[0049] (2) After the polyester chips and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable type of fast response antibacterial and antiviral primary filament;

[0050] Among them, the functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chips and the antibacterial and antiviral master batch is 90:10, the addition amount of nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the temperature of the first zone is 275℃, the temperature of the second zone is 280℃, the temperature of the third zone is 285℃, the temperature of the fourth zone is 290℃, the temperature of the fifth zone is 285℃, the temperature of the sixth zone is 280℃, the temperature of the spinning box is 288℃, the pump supply is 740 g / min, the spinneret is seven hollow 396-hole spinnerets, the pressure difference of the inlet and return air of the ring blowing is 620 Pa, and the winding speed is 1000 m / min;

[0051] (3) The comfortable type of fast response antibacterial and antiviral primary filament is subjected to bundling, drawing, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable type of fast response antibacterial and antiviral fiber;

[0052] Among them, the process parameters of the post-spinning drawing are as follows: the first-stage oil bath drawing oil bath temperature is 62℃, the first-stage drawing multiple is 3.06 times, the second-stage drawing temperature is 110℃, the second-stage drawing multiple is 1.08 times, the total drawing multiple is 3.31, and the tension heat setting temperature is 170℃.

[0053] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 6.66 dtex, a breaking strength of 3.8 cN / dtex, a breaking elongation of 35.6%, a defect content of 11.2 mg / 100 g, a moisture regain of 1.1%, an antibacterial rate of 99.9%, an antiviral rate of 99.6%, an air permeability of 166 mm / s, and a moisture permeability of 371 g / (m 2 ·24h), a response time of 20 min.

[0054] Example 2

[0055] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0056] (1) Preparation of raw materials;

[0057] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 258℃.

[0058] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0059] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 90:10, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of the melt blending and spinning are as follows: the screw zone one temperature is 275℃, the screw zone two temperature is 280℃, the screw zone three temperature is 285℃, the screw zone four temperature is 290℃, the screw zone five temperature is 285℃, the screw zone six temperature is 280℃, the spinning box temperature is 288℃, the pump supply is 867 g / min, the spinneret is a connected king-shaped 244-hole spinneret, the pressure difference of the air inlet and return of the ring blowing is 700 Pa, and the winding speed is 950 m / min;

[0060] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0061] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 65℃, the first-stage drafting multiple is 2.8 times, the second-stage drafting temperature is 120℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.08, and the tension heat setting temperature is 180℃.

[0062] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 11.11 dtex, a breaking strength of 3.5 cN / dtex, a breaking elongation of 28.2%, a defect content of 50 mg / 100 g, a moisture regain of 0.9%, an antibacterial rate of 99.4%, an antiviral rate of 99.2%, an air permeability of 100 mm / s, and a moisture permeability of 80 g / (m 2 · 24h), a response time of 25min.

[0063] Example 3

[0064] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, the specific steps are as follows:

[0065] (1) Preparation of raw materials;

[0066] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 257℃.

[0067] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0068] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 90:10, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 280℃, the screw zone two temperature is 285℃, the screw zone three temperature is 290℃, the screw zone four temperature is 295℃, the screw zone five temperature is 290℃, the screw zone six temperature is 285℃, the spinning box temperature is 292℃, the pump supply is 860 g / min, the spinneret is 800-hole rice-shaped, the pressure difference of the inlet and return air of the ring blowing is 730 Pa, and the winding speed is 1100 m / min;

[0069] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0070] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 63℃, the first-stage drafting multiple is 3.2 times, the second-stage drafting temperature is 100℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.52, and the tension heat setting temperature is 160℃.

[0071] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 3.41 dtex, a breaking strength of 4.3 cN / dtex, a breaking elongation of 40.7%, a defect content of 8.2 mg / 100 g, a moisture regain of 1.2%, an antibacterial rate of 99.5%, an antiviral rate of 99.3%, an air permeability of 200 mm / s, and a moisture permeability of 450 g / (m 2 ·24h), a response time of 20 min.

[0072] Example 4

[0073] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0074] (1) Preparation of raw materials;

[0075] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.65 dL / g, and the melting point is 256℃.

[0076] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0077] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 99:1, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 275℃, the screw zone two temperature is 280℃, the screw zone three temperature is 285℃, the screw zone four temperature is 290℃, the screw zone five temperature is 285℃, the screw zone six temperature is 280℃, the spinning box temperature is 285℃, the pump supply is 700 g / min, the spinneret is seven hollow 396-hole spinnerets, the pressure difference of the inlet and return air of the ring blowing is 600 Pa, and the winding speed is 1000 m / min;

[0078] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0079] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 62℃, the first-stage drafting multiple is 3.1 times, the second-stage drafting temperature is 110℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.41, and the tension heat setting temperature is 170℃.

[0080] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 6.32 dtex, a breaking strength of 3.9 cN / dtex, a breaking elongation of 36.2%, a defect content of 10.3 mg / 100 g, a moisture regain of 1.1%, an antibacterial rate of 99.7%, an antiviral rate of 99.5%, an air permeability of 162 mm / s, and a moisture permeability of 383 g / (m 2 ·24h), a response time of 20 min.

[0081] Example 5

[0082] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0083] (1) Preparation of raw materials;

[0084] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 258℃.

[0085] (2) The polyester chip and the antibacterial and antiviral master batch are respectively dried, then distributed by an injection machine, and then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0086] The functional antibacterial and antiviral powder and the polyester powder are mixed at a mass ratio of 20:80, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 90:10, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 275℃, the screw zone two temperature is 280℃, the screw zone three temperature is 285℃, the screw zone four temperature is 290℃, the screw zone five temperature is 285℃, the screw zone six temperature is 280℃, the spinning box temperature is 288℃, the pump supply is 860 g / min, the spinneret is a connected king-shaped 244-hole spinneret, the pressure difference between the air inlet and the return air of the ring blowing is 690 Pa, and the winding speed is 950 m / min;

[0087] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0088] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 65℃, the first-stage drafting multiple is 2.9 times, the second-stage drafting temperature is 120℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.19, and the tension heat setting temperature is 180℃.

[0089] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 11.04 dtex, a breaking strength of 3.6 cN / dtex, a breaking elongation of 29.8%, a defect content of 42 mg / 100 g, a moisture regain of 0.9%, an antibacterial rate of 99.3%, an antiviral rate of 99.2%, an air permeability of 100 mm / s, and a moisture permeability of 80 g / (m 2 ·24h), and a response time of 30 min.

[0090] Example 6

[0091] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0092] (1) Preparation of raw materials;

[0093] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 257℃.

[0094] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0095] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 99:1, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 283℃, the screw zone two temperature is 288℃, the screw zone three temperature is 293℃, the screw zone four temperature is 298℃, the screw zone five temperature is 293℃, the screw zone six temperature is 288℃, the spinning box temperature is 293℃, the pump supply is 854 g / min, the spinneret is 800-hole rice-shaped, the pressure difference of the inlet and return air of the ring blowing is 720 Pa, and the winding speed is 1100 m / min;

[0096] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0097] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 63℃, the first-stage drafting multiple is 3.2 times, the second-stage drafting temperature is 100℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.52, and the tension heat setting temperature is 160℃.

[0098] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 3.39 dtex, a breaking strength of 4.4 cN / dtex, a breaking elongation of 44.1%, a defect content of 7.7 mg / 100 g, a moisture regain of 1.3%, an antibacterial rate of 99.4%, an antiviral rate of 99.2%, an air permeability of 190 mm / s, and a moisture permeability of 400 g / (m 2 ·24h), a response time of 25 min.

[0099] Example 7

[0100] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0101] (1) Preparation of raw materials;

[0102] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.65 dL / g, and the melting point is 256℃.

[0103] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0104] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 20:80, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 90:10, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 275℃, the screw zone two temperature is 280℃, the screw zone three temperature is 285℃, the screw zone four temperature is 290℃, the screw zone five temperature is 285℃, the screw zone six temperature is 280℃, the spinning box temperature is 286℃, the pump supply is 720 g / min, the spinneret is seven hollow 396-hole spinnerets, the pressure difference of the inlet and return air of the ring blowing is 610 Pa, and the winding speed is 1000 m / min;

[0105] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0106] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 62℃, the first-stage drafting multiple is 3.12 times, the second-stage drafting temperature is 110℃, the second-stage drafting multiple is 1.08 times, the total drafting multiple is 3.37, and the tension heat setting temperature is 170℃.

[0107] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 6.45 dtex, a breaking strength of 3.9 cN / dtex, a breaking elongation of 37.1%, a defect content of 9.0 mg / 100 g, a moisture regain of 1.2%, an antibacterial rate of 99.6%, an antiviral rate of 99.5%, an air permeability of 173 mm / s, and a moisture permeability of 367 g / (m 2 · 24h), a response time of 25min.

[0108] Example 8

[0109] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0110] (1) Preparation of raw materials;

[0111] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 258℃.

[0112] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary fiber;

[0113] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 30:70, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 99:1, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 275℃, the screw zone two temperature is 280℃, the screw zone three temperature is 285℃, the screw zone four temperature is 290℃, the screw zone five temperature is 285℃, the screw zone six temperature is 280℃, the spinning box temperature is 288℃, the pump supply is 858 g / min, the spinneret is a connected king-shaped 244-hole spinneret, the pressure difference of the inlet and return air of the ring blowing is 680 Pa, and the winding speed is 950 m / min;

[0114] (3) The comfortable quick response antibacterial and antiviral primary fiber is subjected to bundling, drafting, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0115] The process parameters of the post-spinning drafting are as follows: the first-stage oil bath drafting oil bath temperature is 65℃, the first-stage drafting multiple is 2.9 times, the second-stage drafting temperature is 120℃, the second-stage drafting multiple is 1.1 times, the total drafting multiple is 3.19, and the tension heat setting temperature is 180℃.

[0116] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, a fiber linear density of 11.01 dtex, a breaking strength of 3.7 cN / dtex, a breaking elongation of 30.3%, a defect content of 40 mg / 100 g, a moisture regain of 0.9%, an antibacterial rate of 99.3%, an antiviral rate of 99.1%, an air permeability of 100 mm / s, and a moisture permeability of 80 g / (m 2 ·24h), and a response time of 30 min.

[0117] Example 9

[0118] A comfortable quick response antibacterial and antiviral fiber and a preparation method thereof, and the specific steps are as follows:

[0119] (1) Preparation of raw materials;

[0120] The polyester chip is M02 from China Jiangsu Shenghong Science and Trade Co., Ltd., the intrinsic viscosity of the polyester chip is 0.66 dL / g, and the melting point is 257℃.

[0121] (2) After the polyester chip and the antibacterial and antiviral master batch are respectively dried, they are distributed by an injection machine, then melt-extruded, spun, cooled, wound, and formed to obtain the comfortable quick response antibacterial and antiviral primary filament;

[0122] The functional antibacterial and antiviral powder and the polyester powder are mixed in a mass ratio of 20:80, the mass ratio of the polyester chip and the antibacterial and antiviral master batch is 99:1, the addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the process parameters of melt blending and spinning are as follows: the screw zone one temperature is 285℃, the screw zone two temperature is 290℃, the screw zone three temperature is 295℃, the screw zone four temperature is 300℃, the screw zone five temperature is 295℃, the screw zone six temperature is 290℃, the spinning box temperature is 295℃, the pump supply is 852 g / min, the spinneret is 800-hole rice-shaped, the pressure difference of the inlet and return air of the ring blowing is 750 Pa, and the winding speed is 1100 m / min;

[0123] (3) The comfortable quick response antibacterial and antiviral primary filament is subjected to bundling, drawing, tension heat setting, crimping, oiling, and relaxation heat setting to obtain the comfortable quick response antibacterial and antiviral fiber;

[0124] The process parameters of the post-spinning drawing are as follows: the first-stage oil bath drawing oil bath temperature is 63℃, the first-stage drawing multiple is 3.2 times, the second-stage drawing temperature is 110℃, the second-stage drawing multiple is 1.1 times, the total drawing multiple is 3.52, and the tension heat setting temperature is 160℃.

[0125] The comfortable quick response antibacterial and antiviral fiber has a special cross-section structure, the fiber linear density is 3.33 dtex, the breaking strength is 4.5 cN / dtex, the breaking elongation is 43.5%, the defect content is 5 mg / 100 g, the moisture regain is 1.3%, the antibacterial rate is 99.1%, the antiviral rate is 99.0%, the air permeability is 150 mm / s, and the moisture permeability is 400 g / (m 2 ·24h), and the response time is 30 min.

[0126] Comparative Example 1

[0127] A method for preparing a fiber is basically the same as in Example 1, except that the spinneret is a circular spinneret, the fiber breaking strength is 5.2 cN / dtex, the breaking elongation is 45.7%, the fiber moisture regain is 0.4%, the antibacterial rate is 99.9%, the antiviral rate is 99.6%, the air permeability is 60 mm / s, and the moisture permeability is 44 g / (m 2 ·24h), and the response time is 30 min.

[0128] Comparative Example 1 and Example 1, the fiber breaking strength and breaking elongation are improved, indicating that the circular fiber can achieve good mechanical properties, which is due to the fact that the force on the fiber with a circular cross-section is more evenly dispersed; however, the fiber moisture regain, air permeability and moisture permeability are significantly reduced, which is due to the fact that compared with the special cross-section, the specific surface area of the fiber with a circular cross-section is smaller, which reduces the fiber moisture regain, and the voids between the fibers are lower, resulting in a decrease in the air permeability and moisture permeability of the fabric.

[0129] Comparative Example 2

[0130] A method for preparing a fiber is basically the same as in Example 1, except that the mass ratio of polyester chips to antibacterial and antiviral masterbatch is 100:0, the fiber breaking strength is 4.8 cN / dtex, the breaking elongation is 45.5%, the moisture regain is 1.3%, the antibacterial rate is 0%, the antiviral rate is 0%, the air permeability is 150 mm / s, and the moisture permeability is 400 g / (m 2 ·24h).

[0131] Comparative Example 2 and Example 1, the fiber breaking strength and breaking elongation are improved, indicating that the addition of functional antibacterial and antiviral ions can cause a loss of fiber mechanical properties, but as shown in Example 1, the loss of mechanical properties is not very high and will not affect the subsequent processing and application. In addition, compared with Example 1, the fiber without adding functional masterbatch has almost no antibacterial and antiviral properties, and the addition of functional particles has little effect on the air permeability and moisture permeability, indicating that the comfort of the fiber is achieved through the design of the special cross-section.

Claims

1. A method for preparing a comfortable and fast response antibacterial and antiviral fiber, wherein polyester chips are melt blended with antibacterial and antiviral masterbatch, and the melt is spun into a comfortable and fast response antibacterial and antiviral fiber after drafting and setting from a special-shaped spinneret with a large specific surface area.

2. A process for the preparation of a comfortable fast responding antimicrobial antiviral fabric as claimed in claim 1, wherein, The intrinsic viscosity of the polyester chips is 0.65-0.70 dL / g, and the melting point is 250-260℃.

3. A process for the preparation of a comfortable fast responding antimicrobial antiviral fabric as claimed in claim 1, wherein, The method for preparing the functional antibacterial and antiviral powder comprises the following steps: dispersing zirconium phosphate in ultrapure water, stirring for 30 minutes under ultrasonic, adding EDTA and placing in a 40℃ water bath for reaction for 3 hours, continuously adding CuSO4·5H2O and reacting for 30 minutes, then adding 1.5 mol / L NaOH solution and 0.1 mol / L ascorbic acid solution and reacting for 1 hour. The Cu2O@ZrP hybrid material obtained by reaction is separated by a centrifuge, washed with ultrapure water and anhydrous ethanol, and dried in a vacuum oven at 60℃ to obtain Cu2O@ZrP powder. The Cu2O@ZrP powder is dissolved in an ethanol aqueous solution and placed in a 60℃ oil bath, 1-propylamine is added and reacted for 1 hour, and octadecyltriphenylphosphonium bromide is added and reacted for 6 hours. After the bromide ion is detected by AgNO3 solution, the functional antibacterial and antiviral powder is dried and ground.

4. A process for the preparation of a comfortable fast responding antimicrobial antiviral fabric as claimed in claim 1, wherein, The method for preparing the antibacterial and antiviral masterbatch comprises the following steps: mixing the functional antibacterial and antiviral powder with the pretreated polyester powder at a mass ratio of 20-30:70-80, adding an auxiliary agent, uniformly mixing, melt extruding, cooling, granulating, sieving, and drying to obtain the antibacterial and antiviral masterbatch.

5. The process for preparing a comfortable, fast responding, antimicrobial and antiviral fiber according to claim 1, characterized in that, The addition amount of the nano calcium stearate is 0.004% of the weight of the polyester powder, and the mass ratio of the polyester chips to the antibacterial and antiviral masterbatch is 90-99:1-10.

6. The method of claim 1, wherein the comfortable, fast responding, antimicrobial and antiviral fiber is prepared by the steps of: The process for melt blending and spinning the polyester chips and the antibacterial and antiviral masterbatch to obtain a comfortable and fast response antibacterial and antiviral fiber comprises the following steps: melt extruding, spinning, cooling, winding, and forming the nascent fiber by a screw extruder in sequence.

7. The process for preparing a comfortable, fast responding, antimicrobial and antiviral fiber according to claim 1, characterized in that, The process parameters for melt blending and spinning include: the temperature of the first zone of the screw is 275-285℃, the temperature of the second zone is 280-290℃, the temperature of the third zone is 285-295℃, the temperature of the fourth zone is 290-300℃, the temperature of the fifth zone is 285-295℃, the temperature of the sixth zone is 280-290℃, the temperature of the spinning box is 285-295℃, the spinneret is one of seven-hole 396-hole, connected Wang-shaped 244-hole, and rice-shaped 800-hole, the pump supply is 700-900 g / min, the pressure difference between the air inlet and return of the ring blowing is 600-750 Pa, and the winding speed is 950-1100 m / min.

8. The process for preparing a comfortable, fast responding, antimicrobial and antiviral fiber according to claim 1, characterized in that, The nascent fiber is subjected to bundling, drafting, tension heat setting, crimping, oiling, drying, and cutting to obtain a comfortable and fast response antibacterial and antiviral fiber.

9. The process for preparing a comfortable, fast responding, antimicrobial and antiviral fiber according to claim 1, characterized in that, The process parameters for melt blending and spinning include: the oil bath temperature in the first-stage oil bath drafting is 60-65℃, the first-stage drafting multiple is 2.8-3.2, the second-stage drafting temperature is 100-120℃, the second-stage drafting multiple is 1.0-1.1, the total drafting multiple is 3.08-3.52 times, and the tension heat setting temperature is 160-180℃.

10. A comfortable fast responding antibacterial antiviral fiber prepared by the process according to any one of claims 1 to 10, characterized in that, The fiber has a special structure, a large specific surface area, a degree of formation of 85% or more, a linear density of 3.33-11.11 dtex, an antibacterial rate of Escherichia coli, Candida albicans and Staphylococcus aureus of 99% or more, an anti-influenza A H1N1 virus rate of 99% or more, a response time of 30 min or less, a fiber breaking strength of 3.5-4.5 cN / dtex, a breaking elongation of 28.2-43.5%, a defect content of 5-50 mg / 100 g, a moisture regain of 0.8-1.3%, a fiber air permeability of 100-200 mm / s, a moisture permeability of 150-450 g / (m 2 ·24h).

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