Complex antibacterial acrylic fiber

An acrylic fiber, compound antibacterial technology, applied in the field of special synthetic fiber preparation, can solve the problems of easy shedding of antibacterial components, poor water resistance, weakened antibacterial effect, etc., to achieve enhanced water resistance, increased adhesion fastness, and improved water resistance and stability. sexual effect

Inactive Publication Date: 2019-12-13

曹运福

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AI-Extracted Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a composite antibacterial acrylic fiber in view of the poor water resistance of the comm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Abstract

The invention discloses a complex antibacterial acrylic fiber, and belongs to the technical field of preparation of special synthetic fibers. According to the complex antibacterial acrylic fiber, saccharomycete is adopted for fermentation, in the process, loofah sponge is supplemented, through the cooperation of plant fibers and bacterial fibers which both are subjected to enzymolysis and fermentative degradation treatment, a fiber adsorption film is formed, disadvantage factors can be combined with negative ions to be adsorbed by the synthetic fiber film with good adsorption performance, andthus a stable bacteriostatic effect is provided; methyl methacrylate, acrylic acid and the like are taken as monomers and the like and prepolymerized to form emulsion with film-forming performance, then adipic dihydrazide is added to form stable emulsion, hydrophilic groups generate inner crosslinking on the molecular structure, and the stability of water resistance is improved; casein is taken asa raw material of an additive for modification, and can be better combined with macromolecule water-resistance components and synthetic fiber components, and the water resistance effect and the retaining performance on the antibacterial components are reinforced. According to the complex antibacterial acrylic fiber, the problems that the water resistance of antibacterial acrylic fibers which arecommonly used at present is poor, antibacterial components in the fibers easily shed during washing, and thus the antibacterial effect is weakened are solved.

Application Domain

Conjugated synthetic polymer artificial filamentsArtifical filament manufacture

Technology Topic

IonEmulsion +11

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Examples

Experimental program(4)
Comparison scheme(3)
Effect test(1)

Example Embodiment

[0028] The preparation method of composite acrylic fiber base material includes the following steps:

[0029] (1) Take the nutrient solution in the fermenter, and add the yeast powder with 1~4% of the nutrient solution quality to the fermenter, stir and mix, and let stand at a constant temperature of 28~32℃ for 12~20 days. During the fermentation process, every Add the pretreated loofah with 6~10% of the total mass of the materials in the fermentor every 3~5 days. After the fermentation is over, heat and sterilize at 90~100℃ for 12~20min to obtain the fermented material. Take the fermented material according to the mass ratio of 20~ 30:3~7:1 Add reagents and mix with the six-ring stone that has passed through a 120-mesh sieve for 30~55min, move it into an ultrasonic oscillator, and vibrate ultrasonically for 25~40min at an ultrasonic frequency of 45~50kHz to obtain a dispersion, and take the dispersion Suction filtration, collect the filter residue and treat it in a freeze dryer at -20~-10℃ for 4~8h to obtain freeze-dried material;

[0030] (2) At 30~55℃, take polyacrylonitrile powder according to the mass ratio of 5:12~20:1, add 25% sodium thiocyanate solution and auxiliary materials to mix, and stir it with 400~800r/min magnetic force for 40~ After 60 minutes, the temperature is lowered to 12~25°C, mixed with the freeze-dried material with 55~70% of the polyacrylonitrile powder mass, and sheared and dispersed at 3000~5000r/min for 12~20min to obtain the composite acrylic fiber base material.

[0031] Preparation of composite water-resistant material: mix methyl methacrylate, acrylic acid, acrylamide, and water at a mass ratio of 7:15-25:4:50, and adjust the pH to 7.3-7.8 with a 20% NaOH solution. Monomer liquid, according to mass parts, take 20~35 parts of monomer liquid, 3~6 parts of 2-ethylhexyl acrylate, 2~5 parts of itaconic acid, 2~4 parts of methylol acrylamide, 3~ Mix 7 parts of regulator, 7~12 parts of additives, 80~100 parts of water in a 40~50℃ reactor, stir with 400~700r/min magnetic force for 30~55min to obtain a mixture, and take the mixture at 30~45℃ Add ethylene bis stearamide and adipic acid dihydrazide according to the mass ratio of 20~35:1:1~4, mix at 400~700r/min for 40~60min, heat up to 75~85℃, add the mixing mass Mix 1~4% ammonium persulfate, keep stirring for 1~3h, then evaporate under reduced pressure to 30~50% of the original volume to obtain composite water-resistant material.

[0032] A composite antibacterial acrylic fiber, in parts by mass, including the following components: 30-50 parts by mass of 12% NaOH solution, 8-14 parts of formaldehyde, 1-4 parts of reducing agent, 12-20 parts of composite water resistance Material, 30-50 parts of composite acrylic fiber base material.

[0033] A preparation method of composite antibacterial acrylic fiber includes the following steps:

[0034] (1) In terms of parts by mass, take 30-50 parts of NaOH solution with a mass fraction of 12%, 8-14 parts of formaldehyde, 1~4 parts of reducing agent, 12-20 parts of composite water-resistant material, 30-50 parts of composite acrylic fiber Fiber base

[0035] (2) At 30~55℃, take NaOH solution, formaldehyde, composite water-resistant material, composite acrylic fiber base material and mix in the reactor, stir with 500~800r/min magnetic force for 40~60min, then add reducing agent and mix to obtain the mixture The mixture is extruded from the spinneret, and the nascent fiber is formed by double diffusion in the coagulation bath. The temperature of the coagulation bath is controlled to 12~16℃, the spinning speed is set to 22~32r/min, and the coagulation bath flow rate is 3500~3800L/L, and then heat and draw the nascent fiber, the draft ratio is 1.5~1.8, the drafting temperature is 72~80℃, and then the nascent fiber after drawing is oiled, dried, crimped, cut and cut. Packed to obtain composite antibacterial acrylic fiber.

Example Embodiment

[0036] Example 1

[0037] Nutrient solution: Take 1 part agar, 8 parts bagasse powder, 10 parts wort, 2 parts yeast extract, 2 parts glucose, 2 parts potassium dihydrogen phosphate, 1 part casein, and 700 parts water in parts by weight. Get the nutrient solution.

[0038] Conditioning agent: At 30℃, take fatty alcohol polyoxyethylene ether according to the mass ratio of 3:15 and add 12% triethanolamine solution and mix to obtain a mixed solution. Take the mixed solution and add hydroxyethyl fiber according to the mass ratio of 10:1:2. Mixing of vegetarian and polylactic acid, the regulator is obtained.

[0039] Additives: At 20°C, take casein, add hexamethylenetetramine and water at a mass ratio of 7:1:30, heat up to 65°C, keep stirring for 25min, heat up to 70°C, add caprolactam with 25% casein mass Mix and stir for 35 minutes and cool to room temperature naturally to obtain a reaction material. At 30° C., take the reaction material and add the carbamate to the mixture at a mass ratio of 12:1 to obtain an additive.

[0040] Excipients: Mix polyacrylamide, stearic acid amide and glycerin according to the mass ratio of 2:1:1 to obtain auxiliary materials.

[0041] Pretreatment of loofah: After cutting the loofah into 1cm segments, blanch it in 90℃ water for 4min to obtain the blanching material. Add the blanching material to the mass ratio of 1:6 and add 15% NaOH solution and mix with The pH of the HCl solution with a concentration of 2mol/L is adjusted to 6.5 to obtain a mixture. The mixture is mixed with laccase at a mass ratio of 50:1. After enzymolysis is incubated at 28°C for 1 hour, the enzyme is inactivated at 90°C for 12 minutes, and filtered. Collect the filter residue to obtain the pre-treated loofah.

[0042] Reducing agent: Mix sodium lauryl sulfate and sodium tartrate in a mass ratio of 3:1 to obtain a reducing agent.

[0043] Reagents: mix sodium citrate and 15% ferrous sulfate solution with a mass ratio of 1:10 to obtain reagents.

[0044] The preparation method of composite acrylic fiber base material includes the following steps:

[0045] (1) Take the nutrient solution in the fermenter, and add the yeast powder with 1% of the nutrient solution quality to the fermenter, stir and mix, leave it to ferment for 12 days at a constant temperature of 28℃, and add it to the fermenter every 3 days during the fermentation process The pretreated loofah with 6% of the total mass of the medium material, after the fermentation is over, heat and sterilize at 90°C for 12 minutes to obtain the fermented material. Take the fermented material at a mass ratio of 20:3:1, add reagents, and pass a 120-mesh sieve. Mix and stir for 30 minutes, move it into an ultrasonic oscillator, ultrasonically oscillate for 25 minutes at an ultrasonic frequency of 45kHz to obtain a dispersion, take the dispersion and filter by suction, collect the filter residue and treat it in a freeze dryer at -20°C for 4 hours to obtain a freeze-dried material;

[0046] (2) At 30℃, take polyacrylonitrile powder and add 25% sodium thiocyanate solution and auxiliary materials at a mass ratio of 5:12:1, mix with 400r/min magnetic force for 40min, cool to 12℃, add The polyacrylonitrile powder is mixed with 55% freeze-dried material, and sheared and dispersed at 3000r/min for 12min to obtain composite acrylic fiber base material.

[0047] Preparation of composite water-resistant material: mix methyl methacrylate, acrylic acid, acrylamide, and water at a mass ratio of 7:15:4:50, and adjust the pH to 7.3 with a 20% NaOH solution to obtain a monomer liquid. In parts by mass, take 20 parts of monomer liquid, 3 parts of 2-ethylhexyl acrylate, 2 parts of itaconic acid, 2 parts of methylol acrylamide, 3 parts of regulator, 7 parts of additives, 80 parts of water in 40 parts Mix in the reactor at ℃, stir with 400r/min magnetic force for 30min to obtain the mixture. At 30℃, take the mixture and add ethylene bisstearic acid amide and adipic acid dihydrazide at a mass ratio of 20:1:1. Stir for 40 min/min, heat up to 75°C, add 1% ammonium persulfate of the mixing mass, mix, keep stirring for 1 hour, and evaporate under reduced pressure to 30% of the original volume to obtain a composite water-resistant material.

[0048] A composite antibacterial acrylic fiber, in parts by mass, comprising the following components: 30 parts of 12% NaOH solution, 8 parts of formaldehyde, 1 part of reducing agent, 12 parts of composite water-resistant material, 30 parts of composite acrylic fiber base material.

[0049] A preparation method of composite antibacterial acrylic fiber includes the following steps:

[0050] (1) In terms of parts by mass, take 30 parts of 12% NaOH solution, 8 parts of formaldehyde, 1 part of reducing agent, 12 parts of composite water-resistant material, and 30 parts of composite acrylic fiber base material;

[0051] (2) At 30℃, take NaOH solution, formaldehyde, composite water-resistant material, composite acrylic fiber base material and mix in the reactor, stir with 500r/min magnetic force for 40 minutes, then add the reducing agent to mix to obtain the mixture material, take the mixture material from Extrusion in the spinneret, double diffusion in the coagulation bath to form nascent fibers, control the temperature of the coagulation bath to 12℃, set the spinning speed to 22r/min, and set the flow rate of the coagulation bath to 3500L/L, and then heat the nascent fibers Drafting, the drafting ratio is 1.5, the drafting temperature is 72°C, and then the nascent fiber after drafting is oiled, dried, crimped, cut and packaged to obtain composite antibacterial acrylic fiber.

Example Embodiment

[0052] Example 2

[0053] Nutrient solution: Mix 3 parts agar, 10 parts bagasse powder, 15 parts wort, 4 parts yeast extract, 4 parts glucose, 4 parts potassium dihydrogen phosphate, 4 parts casein, and 900 parts water in parts by weight, Get the nutrient solution.

[0054] Conditioning agent: At 40℃, take fatty alcohol polyoxyethylene ether according to the mass ratio of 7:15 and add 12% triethanolamine solution and mix to obtain a mixed solution. Take the mixed solution and add hydroxyethyl fiber according to the mass ratio of 10:4:5 Mixing of vegetarian and polylactic acid, the regulator is obtained.

[0055] Additives: At 40°C, take casein, add hexamethylenetetramine and water at a mass ratio of 10:1:40, heat up to 75°C, keep stirring for 50min, heat up to 85°C, add caprolactam with 40% casein mass Mix and stir for 60 minutes, and cool to room temperature naturally to obtain a reaction material. At 45° C., take the reaction material and add the urethane mixture at a mass ratio of 20:1 to obtain an additive.

[0056] Excipients: Mix polyacrylamide, stearic acid amide, and glycerin at a mass ratio of 5:1:1 to obtain auxiliary materials.

[0057] Pretreatment of loofah: After cutting the loofah into 3cm segments, blanching it in 100℃ water for 8 minutes to obtain the blanching material. Add the blanching material to the mass ratio of 1:10 and add 15% NaOH solution and mix with The pH of the HCl solution with a concentration of 2mol/L was adjusted to 6.8 to obtain a mixture. The mixture was mixed with laccase at a mass ratio of 85:1. After enzymatic hydrolysis was incubated at 33°C for 3 hours, the enzyme was inactivated at 100°C for 25 minutes, and filtered. Collect the filter residue to obtain the pre-treated loofah.

[0058] Reducing agent: Mix sodium lauryl sulfate and sodium tartrate at a mass ratio of 7:1 to obtain a reducing agent.

[0059] Reagents: Mix sodium citrate and 15% ferrous sulfate solution with a mass ratio of 1:15 to obtain reagents.

[0060] The preparation method of composite acrylic fiber base material includes the following steps:

[0061] (1) Take the nutrient solution in the fermenter, and add the yeast powder with 4% of the nutrient solution quality to the fermenter, stir and mix, and let it stand for 20 days at a constant temperature of 32℃. During the fermentation process, add it to the fermenter every 5 days. The pretreated loofah with 10% of the total mass of the medium material, after the fermentation is finished, heat and sterilize at 100°C for 20 minutes to obtain the fermented material. Take the fermented material at a mass ratio of 30:7:1 and add reagents and pass the 120-mesh sieve. Mix and stir for 55 minutes, move it into an ultrasonic oscillator, and ultrasonically oscillate for 40 minutes at an ultrasonic frequency of 50kHz to obtain a dispersion. Take the dispersion and filter with suction. Collect the filter residue and treat it in a freeze dryer at -10°C for 8 hours to obtain a freeze-dried material;

[0062] (2) At 55°C, take polyacrylonitrile powder and add 25% sodium thiocyanate solution and auxiliary materials at a mass ratio of 5:20:1, mix with 800r/min magnetic force for 60 minutes, cool to 25°C, add 70% of the polyacrylonitrile powder mass is mixed with the freeze-dried material, and the composite acrylic fiber base material is obtained by shearing and dispersing at 5000 r/min for 20 minutes.

[0063] Preparation of composite water-resistant material: mix methyl methacrylate, acrylic acid, acrylamide, and water at a mass ratio of 7:25:4:50, adjust the pH to 7.8 with a 20% NaOH solution to obtain a monomer liquid, press In parts by mass, take 35 parts of monomer liquid, 6 parts of 2-ethylhexyl acrylate, 5 parts of itaconic acid, 4 parts of methylol acrylamide, 7 parts of regulator, 12 parts of additives, 100 parts of water in 50 parts Mix in the reaction kettle at ℃, stir with 700r/min magnetic force for 55min to obtain the mixture. At 45℃, take the mixture and add ethylene bisstearic acid amide and adipic acid dihydrazide to the mixture at a mass ratio of 35:1:4. Stir for 60min/min, heat to 85°C, add 4% ammonium persulfate and mix with mixing mass, keep stirring for 3h, then evaporate under reduced pressure to 50% of the original volume to obtain composite water-resistant material.

[0064] A composite antibacterial acrylic fiber, calculated in parts by mass, including the following components: 50 parts by mass of 12% NaOH solution, 14 parts of formaldehyde, 4 parts of reducing agent, 20 parts of composite water-resistant material, 50 parts of composite acrylic fiber base material.

[0065] A preparation method of composite antibacterial acrylic fiber includes the following steps:

[0066] (1) In terms of parts by mass, take 50 parts of 12% NaOH solution, 14 parts of formaldehyde, 4 parts of reducing agent, 20 parts of composite water-resistant material, and 50 parts of composite acrylic fiber base material;

[0067] (2) At 55℃, take NaOH solution, formaldehyde, composite water-resistant material, composite acrylic fiber base material and mix in the reactor, stir at 800r/min magnetic force for 60 minutes, then add the reducing agent and mix to obtain the mixture material, take the mixture material from Extrusion in the spinneret, double diffusion in the coagulation bath to form nascent fibers, control the temperature of the coagulation bath to 16℃, set the spinning speed to 32r/min, and set the flow rate of the coagulation bath to 3800L/L, and then heat the nascent fibers Drafting, the drafting ratio is 1.8, the drafting temperature is 80°C, and then the nascent fiber after drafting is oiled, dried, crimped, cut and packaged to obtain the composite antibacterial acrylic fiber.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Increase growth rate
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Complex antibacterial acrylic fiber

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Example Embodiment

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Description & Claims & Application Information

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