An antibacterial paper towel and a method of manufacturing the same

Abstract

The application relates to the technical field of paper towel manufacturing, in particular to an antibacterial paper towel and a preparation method thereof; in the application, an antibacterial composition composed of hydroxymethyl-5,5-dimethylimidazolidine-2,4-diketone, dextran and silver is uniformly dispersed on the surface of a modified spherical carrier and the inner wall of a hole structure of the modified spherical carrier through ultrasonic dispersion means, and the antibacterial composition is densely enveloped by a modifier densely grafted on the surface of the modified spherical carrier, so that the antibacterial composition is fixed, and finally a high-efficiency antibacterial agent composed of the antibacterial composition, the modifier and the spherical carrier is prepared; the use of the high-efficiency antibacterial agent not only makes the prepared paper towel have good antibacterial performance, but also makes the prepared paper towel have good touch, effectively ensuring the quality and the grade of the prepared paper towel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paper towel manufacturing, in particular to an antibacterial paper towel and a preparation method thereof. BACKGROUND

[0002] Paper towel, also known as "living paper", includes napkin, handkerchief, toilet paper, facial tissue and so on, and is a kind of paper towel frequently used in daily life. Paper towel has become a necessity in our life, and plays an important role in hygiene. It can be used to wipe dust, stains, water stains and other dirt, which is particularly common in public places, restaurants, kitchens and bathrooms. In addition, it can also be used to wipe hands, face and mouth to keep people's face and skin clean and hygienic. In general, paper towel is a multifunctional daily necessity that meets the needs of hygiene, cleanliness and portability, so it plays an important role in people's life.

[0003] At present, although the commercially available paper towel products have the advantages of softness, comfort, good water absorption and toughness, the antibacterial performance of the paper towel itself is relatively insufficient, which may cause people to be infected with bacteria when using the paper towel to wipe the mouth, increases the probability of disease from the mouth, and has certain hidden dangers in hygiene. Therefore, the present application provides an antibacterial paper towel and a preparation method thereof to solve the above technical problems. SUMMARY

[0004] The purpose of the present application is to provide an antibacterial paper towel and a preparation method thereof. The paper towel prepared by the present application not only has good antibacterial performance, but also has good touch feeling, effectively ensuring the quality and quality of the prepared paper towel.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A preparation method of an antibacterial paper towel, comprising the following steps:

[0007] Step one, using a pulper to disintegrate wood pulp to prepare disintegrated wood pulp with a concentration of 10-15wt%, then using a sand remover to remove dust and sand impurities in the disintegrated wood pulp and performing beating treatment to prepare beaten wood pulp with a beating degree of 35-40SR and a concentration of 5-8wt%, and adjusting the pH of the beaten wood pulp to 6.5-7.0; conveying the beaten wood pulp to a pulp storage tank; storing and reserving;

[0008] Step two, into the resulting wood pulp in turn put the mass of 0.5-0.8% polyacrylamide, 0.8-1.3% polyamide epoxy chloropropane resin, 0.5-1.0% dodecyl dimethyl benzyl ammonium chloride, 1.2-1.8% sizing agent, 1.5-2.0% compound nano powder, 2-5% high efficient antibacterial agent and 0.03-0.06% defoaming agent; mixed for 30-40 min, then the resulting compound pulp is transported to the sizing pool for storage and standby; wherein the solid content of polyamide epoxy chloropropane resin is 12.5%;

[0009] Step three, the compound pulp obtained in step two is formed by a circular net former to obtain a mixed wood pulp; the recyclable net white water is used as dilution water during the forming process of the compound pulp, and the compound pulp is pressed and dewatered by an oven cylinder with a pressure of 400-450 N / cm, then the compound pulp is dried in vacuum and cut to prepare the antibacterial paper towel product.

[0010] Further, the defoaming agent is selected from any one of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylamine ether, polyoxypropylene glycerol ether and emulsified silicone oil.

[0011] Further, the sizing agent is selected from any one of alkyl alkenone dimer and alkenyl succinic anhydride.

[0012] Further, the wood pulp is any one of masson pine wood pulp, spruce wood pulp and larch wood pulp.

[0013] Further, the compound nano powder is compounded by nano titanium dioxide and nano silicon dioxide at a mass ratio of 1:0.6-1.0.

[0014] Further, the preparation method of the high efficient antibacterial agent is as follows: a modified spherical carrier is uniformly dispersed in a hydroxymethyl-5,5-dimethylimidazole-2,4-diketone aqueous solution with a mass concentration of 6-10% at a solid-liquid ratio of 0.02-0.05 g / mL, then silver nitrate with the same mass as the hydroxymethyl-5,5-dimethylimidazole-2,4-diketone is added, and the mixture is uniformly dispersed by ultrasonic, then the pH is adjusted to 8.5-9.5, and the ultrasonic mixing is continued for 1-2 h; after the ultrasonic mixing is completed, dextran with a mass of 30-50% of the silver nitrate is added to the resulting mixture, and the stirring reaction is carried out at a temperature of 40-50°C for 6-10 h; after the reaction is completed, the resulting product components are sequentially subjected to solid-liquid separation and vacuum drying treatment, and finally the high efficient antibacterial agent is obtained.

[0015] Further, the preparation method of the modified spherical carrier comprises the following steps:

[0016] I. The spherical carrier is uniformly dispersed in deionized water at a solid-liquid ratio of 0.015-0.03 g / mL, then glycerol diglycidyl ether with a mass of 30-50% of the spherical carrier is added, the mixture is uniformly mixed, and the obtained mixture is kept at a temperature of 60-80°C for 5-10 h; after the reaction is completed, the obtained product components are subjected to solid-liquid separation, the obtained solid filter material is washed with deionized water and anhydrous ethanol for 2-3 times in sequence, and then is subjected to drying treatment, and the obtained product is recorded as a pretreated spherical carrier;

[0017] II. The pretreated spherical carrier is put into deionized water at a solid-liquid ratio of 0.03-0.08 / mL, and a modifier with a mass of 25-40% of the pretreated spherical carrier is added, the mixture is uniformly dispersed by ultrasonic, and then is kept at a temperature of 70-90°C for 5-8 h; after the reaction is completed, the obtained product components are filtered, the obtained solid filter material is subjected to washing with deionized water and vacuum drying treatment in sequence, and then a modified spherical carrier is obtained.

[0018] Further, the preparation method of the modifier is as follows: 1,6-diaminohexane is put into anhydrous ethanol at a use ratio of 0.2-0.5 g / mL, the mixture is uniformly mixed and heated to 40-50°C, then hydrochloric acid with a mass of 0.5-0.8 times of 1,6-diaminohexane and a concentration of 20-30 wt% is added dropwise, the mixture is stirred for 80-120 min, then imino urea hydrochloride with a mass of 0.8-1.5 times of 1,6-diaminohexane is added, then the mixture is stirred at a temperature of 105-115°C for 60-100 min, formic acid with a mass of 0.7-1.0 times of imino urea hydrochloride is added, the mixture is stirred for 2-3 h, and then is naturally cooled to room temperature, and then is subjected to vacuum drying treatment to obtain the modifier.

[0019] Further, the preparation method of the spherical carrier is as follows:

[0020] I. Zinc nitrate is put into N,N-dimethylformamide at a solid-liquid ratio of 0.02-0.05 g / mL, and then p-terephthalic acid with a mass of 0.2-0.3 times of zinc nitrate and polyvinylpyrrolidone with a mass of 3-6 times of zinc nitrate are sequentially added, the mixture is uniformly stirred, and then the obtained mixture components are refluxed at a temperature of 110-130°C for 15-20 h; after the reaction is completed, the obtained product components are subjected to centrifugal separation, the obtained filter cake is washed with N,N-dimethylformamide and anhydrous ethanol for 2-3 times in sequence, and then is subjected to drying treatment, and the obtained solid powder is stored and used;

[0021] II. The obtained solid powder is uniformly dispersed in anhydrous ethanol at a solid-liquid ratio of 0.01-0.025 g / mL, and acetic acid with a volume of 0.5-1% of the anhydrous ethanol is added thereto under the condition of ultrasonic dispersion, and after being uniformly mixed and stirred, it is kept at 165-180°C for 15-25 h for reaction; after the reaction is completed, the obtained reaction product is centrifugally separated, the obtained filter cake is washed with deionized water and anhydrous ethanol for 2-3 times in sequence, and then it is dried, and finally the obtained is the spherical carrier.

[0022] An antibacterial tissue is prepared according to the preparation method of the antibacterial tissue.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] In the present application, zinc nitrate, terephthalic acid, polyvinylpyrrolidone and acetic acid are used as raw materials to prepare a spherical carrier with a porous structure. The obtained spherical carrier is dispersed in deionized water and glycerol diglycidyl ether is added thereto, and after being uniformly mixed, it is kept for reaction to prepare a pretreated spherical carrier. The pretreated spherical carrier is put into deionized water and a modifier is added thereto, the modifier chemically reacts with the related groups on the surface of the pretreated spherical carrier, and finally it is "grafted" on the surface of the pretreated spherical carrier and the inner wall of the porous structure thereof through chemical bonds, and after being uniformly dispersed by ultrasonic dispersion, kept for reaction and vacuum dried, a modified spherical carrier is prepared. Then the modified spherical carrier is uniformly dispersed in a hydroxymethyl-5,5-dimethylimidazolidine-2,4-diketone aqueous solution, and silver nitrate is added to react with the hydroxymethyl-5,5-dimethylimidazolidine-2,4-diketone to form a complex, and after being ultrasonically dispersed, the generated silver complex is uniformly dispersed and attached to the surface of the modified spherical carrier and the inner wall of the porous structure thereof, and then dextran is added to react with the silver on the modified spherical carrier, and finally an antibacterial composition composed of hydroxymethyl-5,5-dimethylimidazolidine-2,4-diketone, dextran and silver is obtained. The antibacterial composition is uniformly dispersed on the surface of the modified spherical carrier and the inner wall of the porous structure thereof by ultrasonic dispersion, and the antibacterial composition is densely enveloped by the densely "grafted" modifier on the surface of the modified spherical carrier, so that the antibacterial composition is "fixed", and finally a high-efficiency antibacterial agent composed of the antibacterial composition, the modifier and the spherical carrier is obtained. In the synergistic cooperation of the high-efficiency antibacterial agent and dodecyl dimethyl benzyl ammonium chloride, the antibacterial performance of the tissue is significantly improved, and the quality and the quality of the prepared tissue are effectively ensured. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0026] Embodiment 1

[0027] A preparation method of an antibacterial tissue, comprising the following steps:

[0028] Step one, using a pulper to disintegrate the pinus massoniana wood pulp to prepare disintegrated wood pulp with a concentration of 10wt%, then using a sand remover to remove dust and sand impurities in the disintegrated wood pulp and performing beating treatment to prepare beaten wood pulp with a beating degree of 35SR, a concentration of 5wt%, and a pH of 6.5; the obtained beaten wood pulp is transported to a pulp storage tank; stored and used as needed;

[0029] Step two, sequentially adding 0.5wt% of polyacrylamide, 0.8wt% of polyamide epichlorohydrin resin, 0.5wt% of dodecyl dimethyl benzyl ammonium chloride, 1.2wt% of alkyl enone dimer sizing agent, 1.5wt% of compounded nano powder, 2wt% of high-efficiency antibacterial agent, and 0.03wt% of polyoxyethylene polyoxypropylene pentaerythritol ether into the obtained beaten wood pulp; after mixing and stirring for 30min, the obtained compounded pulp is transported to a sizing tank for storage and use as needed;

[0030] The solid content of the polyamide epichlorohydrin resin is 12.5wt%; the compounded nano powder is compounded by nano titanium dioxide and nano silicon dioxide at a mass ratio of 1:0.6;

[0031] Step three, using a cylinder former to perform forming treatment on the compounded pulp obtained in step two to prepare mixed wood pulp; using recyclable net white water as dilution water during the forming treatment of the compounded pulp, using a cylinder press dewatering machine with a topper pressure of 400N / cm to perform press dewatering treatment on the compounded pulp, and then sequentially performing vacuum drying and cutting treatment to prepare antibacterial tissue products.

[0032] The preparation method of the high-efficiency antibacterial agent is as follows: the modified spherical carrier is uniformly dispersed in a 6% hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione aqueous solution at a solid-liquid ratio of 0.02 g / mL, then silver nitrate with the same mass as the hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione is added, and after being uniformly dispersed by ultrasonic, the pH is adjusted to 8.5, and ultrasonic mixing is continued for 1 h; after the ultrasonic mixing is completed, dextran with a mass of 30% of the silver nitrate is added to the obtained mixed phase, and stirring reaction is carried out at a temperature of 40℃ for 6 h; after the reaction is completed, the obtained product components are sequentially subjected to solid-liquid separation and vacuum drying treatment, and finally the high-efficiency antibacterial agent is obtained.

[0033] The preparation method of the modified spherical carrier comprises the following steps:

[0034] I. The spherical carrier is uniformly dispersed in deionized water at a solid-liquid ratio of 0.015 g / mL, then glycerol diglycidyl ether with a mass of 30% of the spherical carrier is added, and after being mixed uniformly, the obtained mixed solution is incubated at a temperature of 60℃ for 5 h; after the reaction is completed, the obtained product components are subjected to solid-liquid separation, and the obtained solid filter material is sequentially washed with deionized water and anhydrous ethanol for 2 times, and then is subjected to drying treatment, and the obtained is recorded as a pretreated spherical carrier;

[0035] II. The pretreated spherical carrier is added to deionized water at a solid-liquid ratio of 0.03 / mL, and a modifier with a mass of 25% of the pretreated spherical carrier is added, and after being uniformly dispersed by ultrasonic, incubation reaction is carried out at a temperature of 70℃ for 5 h; after the reaction is completed, the obtained product components are filtered, and the obtained solid filter material is sequentially subjected to washing with deionized water and vacuum drying treatment, and the modified spherical carrier is obtained.

[0036] The preparation method of the modifier is as follows: 1, 6-diaminohexane is added to anhydrous ethanol at a use ratio of 0.2 g / mL, and after being mixed uniformly, the temperature is raised to 40℃, then hydrochloric acid with a mass of 0.5 times of the 1, 6-diaminohexane and a concentration of 20 wt% is added dropwise, and after being mixed and stirred for 80 min, semicarbazide with a mass of 0.8 times of the 1, 6-diaminohexane is added, and then mixing and stirring are carried out at a temperature of 105℃ for 60 min, formic acid with a mass of 0.7 times of the semicarbazide is added, and after being mixed and stirred for 2 h, it is naturally cooled to room temperature, and then vacuum drying treatment is carried out, and the modifier is obtained.

[0037] The preparation method of the spherical carrier is as follows:

[0038] I. The zinc nitrate is put into N, N-dimethylformamide according to the solid-liquid ratio of 0.02 g / mL, and then the terephthalic acid with the mass of 0.2 times of the zinc nitrate, the polyvinylpyrrolidone with the mass of 3 times of the zinc nitrate are sequentially added, the obtained mixture is uniformly mixed and stirred, and then the mixture is refluxed at the temperature of 110 ℃ for 15 h; after the reaction is completed, the obtained product is centrifuged, the obtained filter cake is washed twice with N, N-dimethylformamide and anhydrous ethanol in sequence, and then the filter cake is dried, and the obtained solid powder is stored and used as needed.

[0039] II. The obtained solid powder is uniformly dispersed in anhydrous ethanol according to the solid-liquid ratio of 0.01 g / mL, and the acetic acid with the volume of 0.5% of the anhydrous ethanol is added under the condition of ultrasonic dispersion, the mixture is uniformly mixed and stirred, and then the mixture is incubated at the condition of 165 ℃ for 15 h; after the reaction is completed, the obtained reaction product is centrifuged, the obtained filter cake is washed twice with deionized water and anhydrous ethanol in sequence, and then the filter cake is dried, and finally the obtained product is the spherical carrier.

[0040] Example 2

[0041] A preparation method of an antibacterial tissue, comprising the following steps:

[0042] Step one, the spruce wood pulp is disintegrated by a pulper to prepare disintegrated wood pulp with a concentration of 12 wt%, then the disintegrated wood pulp is treated by a sand remover to remove dust and sand impurities and is beaten to prepare beaten wood pulp with a beating degree of 38SR, a concentration of 6 wt% and a pH of 6.8, and the beaten wood pulp is sent to a storage tank for storage and use as needed.

[0043] Step two, the beaten wood pulp is sequentially added with polyacrylamide with a mass of 0.6% of the beaten wood pulp, polyamide epichlorohydrin resin with a mass of 1.0% of the beaten wood pulp, dodecyl dimethyl benzyl ammonium chloride with a mass of 0.8% of the beaten wood pulp, alkenyl succinic anhydride sizing agent with a mass of 1.5% of the beaten wood pulp, compound nano powder with a mass of 1.8% of the beaten wood pulp, high-efficiency antibacterial agent with a mass of 4% of the beaten wood pulp and polyoxyethylene polyoxypropyl alcohol amine ether with a mass of 0.05% of the beaten wood pulp, and then the mixture is stirred for 35 min, and the obtained compound sizing material is sent to a sizing tank for storage and use as needed.

[0044] The solid content of the polyamide epichlorohydrin resin is 12.5%, and the compound nano powder is prepared by compounding nano titanium dioxide and nano silicon dioxide according to a mass ratio of 1:0.8.

[0045] Step three, the compound sizing material obtained in step two is formed by a cylinder former to prepare mixed wood pulp, the recyclable net white water is used as dilution water during the forming of the compound sizing material, the compound sizing material is pressed and dewatered by a cylinder press dewatering machine with a press pressure of 400 N / cm, and then the compound sizing material is treated by vacuum drying and cutting to prepare the antibacterial tissue product.

[0046] The preparation method of the high-efficiency antibacterial agent is as follows: the modified spherical carrier is uniformly dispersed in a 8% hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione aqueous solution at a solid-liquid ratio of 0.03 g / mL, then silver nitrate with the same mass as the hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione is added, and after being uniformly dispersed by ultrasonic, the pH is adjusted to 9.0, and ultrasonic mixing is continued for 1.5 h; after the ultrasonic mixing is completed, dextran with a mass of 40% of the silver nitrate is added to the obtained mixed phase, and stirring reaction is carried out at a temperature of 45℃ for 8 h; after the reaction is completed, the obtained product components are sequentially subjected to solid-liquid separation and vacuum drying treatment, and finally the high-efficiency antibacterial agent is obtained.

[0047] The preparation method of the modified spherical carrier includes the following steps:

[0048] I. The spherical carrier is uniformly dispersed in deionized water at a solid-liquid ratio of 0.02 g / mL, then glycerol diglycidyl ether with a mass of 40% of the spherical carrier is added, and after being mixed uniformly, the obtained mixed solution is incubated at a temperature of 70℃ for 8 h; after the reaction is completed, the obtained product components are subjected to solid-liquid separation, and the obtained solid filter material is sequentially washed with deionized water and anhydrous ethanol for 2 times, and then subjected to drying treatment, and the obtained is recorded as a pretreated spherical carrier;

[0049] II. The pretreated spherical carrier is added to deionized water at a solid-liquid ratio of 0.05 / mL, and a modifier with a mass of 35% of the pretreated spherical carrier is added, and after being uniformly dispersed by ultrasonic, it is incubated at a temperature of 80℃ for 6 h; after the reaction is completed, the obtained product components are filtered, and the obtained solid filter material is sequentially subjected to deionized water washing and vacuum drying treatment to obtain the modified spherical carrier.

[0050] The preparation method of the modifier is as follows: 1, 6-diaminohexane is added to anhydrous ethanol at a use ratio of 0.4 g / mL, and after being mixed uniformly, the temperature is raised to 45℃, then hydrochloric acid with a mass of 0.6 times of the 1, 6-diaminohexane and a concentration of 25wt% is added dropwise, and after being mixed and stirred for 100 min, semicarbazide with a mass of 1.2 times of the 1, 6-diaminohexane is added, and then mixed and stirred at a temperature of 110℃ for 80 min, formic acid with a mass of 0.8 times of the semicarbazide is added, and after being mixed and stirred for 2 h, it is naturally cooled to room temperature, and then subjected to vacuum drying treatment to obtain the modifier.

[0051] The preparation method of the spherical carrier is as follows:

[0052] I. The zinc nitrate is put into N, N-dimethylformamide according to the solid-liquid ratio of 0.03 g / mL, and then the terephthalic acid with the mass of 0.25 times of the zinc nitrate, the polyvinylpyrrolidone with the mass of 5 times of the zinc nitrate are sequentially added, the obtained mixture is uniformly mixed and stirred, and then the obtained mixture components are refluxed at the temperature of 120℃ for 15 hours; after the reaction is completed, the obtained product components are centrifuged, the obtained filter cake is washed twice with N, N-dimethylformamide and anhydrous ethanol in sequence, and then the filter cake is dried, and the obtained solid powder is stored and used as needed.

[0053] II. The obtained solid powder is uniformly dispersed in anhydrous ethanol according to the solid-liquid ratio of 0.02 g / mL, and the acetic acid with the volume of 0.8% of the anhydrous ethanol is added under the condition of ultrasonic dispersion, and then the mixture is uniformly mixed and stirred, and then the mixture is incubated at the condition of 170℃ for 20 hours; after the reaction is completed, the obtained reaction product is centrifuged, the obtained filter cake is washed twice with deionized water and anhydrous ethanol in sequence, and then the filter cake is dried, and finally the obtained product is the spherical carrier.

[0054] Example 3

[0055] A preparation method of an antibacterial tissue, comprising the following steps:

[0056] Step one, the larch wood pulp is disintegrated by a pulper to prepare disintegrated wood pulp with the concentration of 15wt%, and then the disintegrated wood pulp is treated by a sand remover to remove dust and sand impurities and to be beaten to prepare beaten wood pulp with the beating degree of 40SR, the concentration of 8wt%, and the pH of 7.0; the beaten wood pulp is transported to a storage pool; and the beaten wood pulp is stored and used as needed.

[0057] Step two, the polyacrylamide with the mass of 0.8% of the beaten wood pulp, the polyamide epichlorohydrin resin with the mass of 1.3% of the beaten wood pulp, the dodecyl dimethyl benzyl ammonium chloride with the mass of 1.0% of the beaten wood pulp, the alkyl alkene ketone dimer sizing agent with the mass of 1.8% of the beaten wood pulp, the compound nano powder with the mass of 2.0% of the beaten wood pulp, the high-efficiency antibacterial agent with the mass of 5% of the beaten wood pulp, and the polyoxypropylene glycerol ether with the mass of 0.06% of the beaten wood pulp are sequentially added into the beaten wood pulp; the obtained compound pulp is transported to a sizing pool after being mixed and stirred for 40 minutes; and the compound pulp is stored and used as needed.

[0058] The solid content of the polyamide epichlorohydrin resin is 12.5%; the compound nano powder is composed of nano titanium dioxide and nano silicon dioxide.

[0059] Step three, the compound pulp obtained in step two is formed by a cylinder former to prepare mixed wood pulp; the recyclable net white water is used as dilution water when the compound pulp is formed, the compound pulp is pressed and dewatered by a cylinder press dewatering machine with the cylinder press pressure of 450 N / cm, and then the compound pulp is treated by vacuum drying and cutting to prepare the antibacterial tissue product.

[0060] The preparation method of the high-efficiency antibacterial agent is as follows: the modified spherical carrier is uniformly dispersed in a 10% hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione aqueous solution at a solid-liquid ratio of 0.05 g / mL, then silver nitrate with the same mass as the hydroxymethyl-5, 5-dimethylimidazolidine-2, 4-dione is added, and after being uniformly dispersed by ultrasonic, the pH is adjusted to 9.5, and ultrasonic mixing is continued for 2 h; after the ultrasonic mixing is completed, dextran with a mass of 50% of the silver nitrate is added to the obtained mixed phase, and stirring reaction is carried out at a temperature of 50℃ for 10 h; after the reaction is completed, the obtained product components are sequentially subjected to solid-liquid separation and vacuum drying treatment, and finally the high-efficiency antibacterial agent is obtained.

[0061] The preparation method of the modified spherical carrier comprises the following steps:

[0062] I. The spherical carrier is uniformly dispersed in deionized water at a solid-liquid ratio of 0.03 g / mL, then glycerol diglycidyl ether with a mass of 50% of the spherical carrier is added, and after being mixed uniformly, the obtained mixed solution is incubated at a temperature of 80℃ for 10 h; after the reaction is completed, the obtained product components are subjected to solid-liquid separation, and the obtained solid filter material is sequentially washed with deionized water and anhydrous ethanol for 3 times, and then subjected to drying treatment, and the obtained is recorded as a pretreated spherical carrier;

[0063] II. The pretreated spherical carrier is added to deionized water at a solid-liquid ratio of 0.08 / mL, and a modifier with a mass of 40% of the pretreated spherical carrier is added, and after being uniformly dispersed by ultrasonic, incubation reaction is carried out at a temperature of 90℃ for 8 h; after the reaction is completed, the obtained product components are filtered, and the obtained solid filter material is sequentially subjected to deionized water washing and vacuum drying treatment, and the modified spherical carrier is obtained.

[0064] The preparation method of the modifier is as follows: 1, 6-diaminohexane is added to anhydrous ethanol at a use ratio of 0.5 g / mL, and after being mixed uniformly, the temperature is increased to 50℃, then hydrochloric acid with a mass of 0.8 times of the 1, 6-diaminohexane and a concentration of 30 wt% is added dropwise, and after being mixed and stirred for 120 min, semicarbazide with a mass of 1.5 times of the 1, 6-diaminohexane is added, and then the mixture is mixed and stirred at a temperature of 115℃ for 100 min, formic acid with a mass of 1.0 times of the semicarbazide is added, and after being mixed and stirred for 3 h, the mixture is naturally cooled to room temperature, and then subjected to vacuum drying treatment to obtain the modifier.

[0065] The preparation method of the spherical carrier is as follows:

[0066] I. The zinc nitrate is put into N, N-dimethylformamide according to the solid-liquid ratio of 0.05 g / mL, and then the terephthalic acid with the mass of 0.3 times of the zinc nitrate, the polyvinylpyrrolidone with the mass of 6 times of the zinc nitrate are sequentially added, the obtained mixture is uniformly stirred and mixed, and then the obtained mixture components are refluxed at the temperature of 130℃ for 20 hours; after the reaction is completed, the obtained reaction product is centrifugally separated, the obtained filter cake is washed with N, N-dimethylformamide and anhydrous ethanol for 3 times, and then the filter cake is dried, and the obtained solid powder is preserved and used.

[0067] II. The obtained solid powder is uniformly dispersed in anhydrous ethanol according to the solid-liquid ratio of 0.025 g / mL, and the acetic acid with the volume of 1% of the anhydrous ethanol is added under the condition of ultrasonic dispersion, and then the obtained mixture is uniformly stirred and mixed, and then the obtained mixture is preserved and reacted at the condition of 180℃ for 25 hours; after the reaction is completed, the obtained reaction product is centrifugally separated, the obtained filter cake is washed with deionized water and anhydrous ethanol for 3 times, and then the filter cake is dried, and finally the obtained product is the spherical carrier.

[0068] Comparative Example 1: The difference from Example 1 is that the same amount of modified spherical carrier is used instead of the high-efficiency antibacterial agent in the example.

[0069] Comparative Example 2: The difference from Example 1 is that the same amount of spherical carrier is used instead of the high-efficiency antibacterial agent in the example.

[0070] Comparative Example 3: The difference from Example 1 is that the high-efficiency antibacterial agent is not used.

[0071] Performance test: the antibacterial paper towel samples provided by Examples 1-3 and Comparative Examples 1-3 are respectively marked as Examples 1-3 and Comparative Examples 1-3; and the related performances of the antibacterial paper towel samples provided by Examples 1-3 and Comparative Examples 1-3 are respectively detected, and the obtained detection results are recorded in the following table:

[0072]

[0073] Through comparison and analysis of the related data in the table, it can be seen that the paper towel prepared by the application not only has good antibacterial performance, but also has good touch feeling, effectively ensuring the quality and quality of the prepared paper towel. Therefore, it shows that the antibacterial paper towel provided by the application has wider market prospect and is more suitable for promotion.

[0074] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments described. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to provide the best illustration of the application principles and their practical application, so that those skilled in the art can well understand and utilize the application. The application is limited only by the claims and their full scope and equivalents.

Claims

1. A method of making an antibacterial paper towel, characterized by, It comprises the following steps: Step one, the wood pulp is disintegrated by a pulper to prepare disintegrated wood pulp with a concentration of 10-15wt%, then the dust and sand impurities in the disintegrated wood pulp are removed by a sand remover and the disintegrated wood pulp is beaten to prepare beaten wood pulp with a beating degree of 35-40SR, a concentration of 5-8wt% and a pH of 6.5-7.0; the beaten wood pulp is transported to a storage tank for storage and standby; Step two, the beaten wood pulp is sequentially added with polyacrylamide with a mass of 0.5-0.8% of the beaten wood pulp, polyamide epichlorohydrin resin with a mass of 0.8-1.3% of the beaten wood pulp, dodecyl dimethyl benzyl ammonium chloride with a mass of 0.5-1.0% of the beaten wood pulp, sizing agent with a mass of 1.2-1.8% of the beaten wood pulp, compounded nano powder with a mass of 1.5-2.0% of the beaten wood pulp, high-efficiency antibacterial agent with a mass of 2-5% of the beaten wood pulp and defoaming agent with a mass of 0.03-0.06% of the beaten wood pulp; after mixing and stirring for 30-40min, the obtained compounded pulp is transported to a sizing tank for storage and standby; the solid content of the polyamide epichlorohydrin resin is 12.5%; Step three, the compounded pulp obtained in step two is formed by a cylinder former to prepare mixed wood pulp; during the forming process, recyclable net white water is used as dilution water, the compounded pulp is pressed and dewatered by an oven cylinder roll press dewatering machine with a roll pressure of 400-450N / cm, and then is subjected to vacuum drying and cutting to prepare antibacterial paper towel products; The preparation method of the high-efficiency antibacterial agent is as follows: a modified spherical carrier is uniformly dispersed in a hydroxymethyl-5,5-dimethyl imidazole alkane-2,4-diketone aqueous solution with a mass concentration of 6-10% according to a solid-liquid ratio of 0.02-0.05g / mL, then silver nitrate with the same mass as the hydroxymethyl-5,5-dimethyl imidazole alkane-2,4-diketone is added, the mixture is uniformly dispersed by ultrasonic, then the pH is adjusted to 8.5-9.5, and the ultrasonic mixing is continued for 1-2h; after the ultrasonic mixing is completed, dextran with a mass of 30-50% of the silver nitrate is added to the obtained mixture, and the stirring reaction is carried out at a temperature of 40-50℃ for 6-10h; after the reaction is completed, the obtained product components are sequentially subjected to solid-liquid separation and vacuum drying treatment, and finally the obtained product is the high-efficiency antibacterial agent.

2. A method of making an antimicrobial paper towel according to claim 1, characterized in that: The defoaming agent is selected from any one of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylamine ether, polyoxypropylene glycerol ether and emulsified silicone oil.

3. A method of making an antimicrobial paper towel according to claim 1, characterized in that: The sizing agent is selected from any one of alkyl alkenone dimer and alkenyl succinic anhydride.

4. A method of making an antimicrobial paper towel according to claim 1, characterized in that: The wood pulp is any one of masson pine wood pulp, spruce wood pulp and larch wood pulp.

5. A method of making an antimicrobial paper towel according to claim 1, characterized in that: The compounded nano powder is compounded from nano titanium dioxide and nano silicon dioxide according to a mass ratio of 1:0.6-1.

0.

6. The method for preparing an antibacterial tissue according to claim 1, characterized in that, The preparation method of the modified spherical carrier comprises the following steps: I. The spherical carrier is uniformly dispersed in deionized water at a solid-liquid ratio of 0.015-0.03 g / mL, then glycerol diglycidyl ether with a mass of 30-50% of the spherical carrier is added, the mixture is uniformly mixed, and the obtained mixture is kept at a temperature of 60-80°C for 5-10 h; after the reaction is completed, the obtained product components are subjected to solid-liquid separation, the obtained solid filter material is washed with deionized water and anhydrous ethanol for 2-3 times in sequence, and then is subjected to drying treatment, and the obtained product is denoted as a pretreated spherical carrier; II. The pretreated spherical carrier is put into deionized water at a solid-liquid ratio of 0.03-0.08 / mL, and a modifier with a mass of 25-40% of the pretreated spherical carrier is added, the mixture is uniformly dispersed under ultrasonic dispersion, and then is kept at a temperature of 70-90°C for 5-8 h; after the reaction is completed, the obtained product is filtered, the obtained solid filter material is subjected to washing with deionized water and vacuum drying treatment in sequence, and then a modified spherical carrier is obtained.

7. A method of making an antimicrobial wipe according to claim 6, wherein, The preparation method of the modifier is as follows: 1,6-diaminohexane is put into anhydrous ethanol at a material ratio of 0.2-0.5 g / mL, the mixture is uniformly mixed, and then is heated to 40-50°C, then hydrochloric acid with a mass of 0.5-0.8 times of 1,6-diaminohexane and a concentration of 20-30 wt% is added dropwise, the mixture is stirred for 80-120 min, then imino urea hydrochloride with a mass of 0.8-1.5 times of 1,6-diaminohexane is added, then the mixture is stirred at a temperature of 105-115°C for 60-100 min, formic acid with a mass of 0.7-1.0 times of imino urea hydrochloride is added, the mixture is stirred for 2-3 h, and then is naturally cooled to room temperature, and finally the modifier is obtained through vacuum drying treatment.

8. A method of making an antimicrobial paper towel according to claim 6, wherein, The preparation method of the spherical carrier is as follows: I. Zinc nitrate is put into N,N-dimethylformamide at a solid-liquid ratio of 0.02-0.05 g / mL, and then p-terephthalic acid with a mass of 0.2-0.3 times of zinc nitrate and polyvinylpyrrolidone with a mass of 3-6 times of zinc nitrate are sequentially added, the mixture is uniformly stirred, and then the obtained mixture components are subjected to reflux reaction at a temperature of 110-130°C for 15-20 h; after the reaction is completed, the obtained product components are subjected to centrifugal separation, the obtained filter cake is washed with N,N-dimethylformamide and anhydrous ethanol for 2-3 times in sequence, and then is subjected to drying treatment, and the obtained solid powder is stored for use; II. The obtained solid powder is uniformly dispersed in anhydrous ethanol at a solid-liquid ratio of 0.01-0.025 g / mL, and then acetic acid with a volume of 0.5-1% of anhydrous ethanol is added under ultrasonic dispersion, the mixture is uniformly stirred, and then is kept at a temperature of 165-180°C for 15-25 h; after the reaction is completed, the obtained reaction product is subjected to centrifugal separation, the obtained filter cake is washed with deionized water and anhydrous ethanol for 2-3 times in sequence, and then is subjected to drying, and finally the obtained product is the spherical carrier.

9. An antibacterial paper tissue, characterized by, The preparation method of the antibacterial paper towel is prepared by the method in any one of claims 1-8.

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