阅读说明：本技术 一种无刺激抗菌消毒湿巾及其制备方法 (Non-irritant antibacterial disinfectant wet tissue and preparation method thereof ) 是由 李飞 高翔宇 张晓磊 李小燕 杨天二 于 2020-05-28 设计创作，主要内容包括：本发明公开了一种无刺激抗菌消毒湿巾,包括湿巾基材和浸润液,所述湿巾基材由改性聚丙烯纤维、竹浆纤维和棉纤维制成；所述浸润液由如下重量份原料制成：五水硫酸铜10-13份、抗菌剂4-5份、纯净水100-120份；所述无刺激抗菌消毒湿巾由如下方法制备：将湿巾基材完全浸没在浸润液中,浸泡、烘烤、洗涤后,真空干燥,最后用丙二醇水溶液中浸湿。本发明的湿巾包括湿巾基材和浸润液,湿巾基材为改性聚丙烯纤维、竹浆纤维和棉纤维混制成的无纺布,具有舒服、柔软的手感；浸润液中的铜离子能够与改性聚丙烯纤维络合,抗菌剂能够与棉纤维化学键合,使湿巾基材具备持久、优异的抗菌性能；采用的是丙二醇水溶液对湿巾润湿,对皮肤无任何刺激作用。(The invention discloses a non-irritant antibacterial disinfectant wet tissue, which comprises a wet tissue base material and wetting liquid, wherein the wet tissue base material is prepared from modified polypropylene fibers, bamboo pulp fibers and cotton fibers; the impregnating solution is prepared from the following raw materials in parts by weight: 10-13 parts of blue vitriol, 4-5 parts of antibacterial agent and 120 parts of purified water; the non-irritant antibacterial disinfectant wet tissue is prepared by the following method: completely immersing the wet tissue base material in the soaking solution, soaking, baking, washing, drying in vacuum, and finally soaking in a propylene glycol aqueous solution. The wet tissue comprises a wet tissue base material and wetting liquid, wherein the wet tissue base material is non-woven fabric made of modified polypropylene fibers, bamboo pulp fibers and cotton fibers, and the wet tissue base material has comfortable and soft hand feeling; copper ions in the impregnating solution can be complexed with the modified polypropylene fibers, and the antibacterial agent can be chemically bonded with the cotton fibers, so that the wet tissue base material has lasting and excellent antibacterial performance; the adopted propylene glycol aqueous solution can wet the wet tissue and has no stimulation to the skin.)

1. A non-irritant antibacterial disinfectant wet tissue comprises a wet tissue base material and wetting liquid, and is characterized in that the wet tissue base material is made of modified polypropylene fibers, bamboo pulp fibers and cotton fibers;

mixing modified polypropylene fiber, bamboo pulp fiber and cotton fiber according to the mass ratio of 1:1:2, opening, removing impurities, forming a net on a carding combination device, and then preparing the mixture on a non-woven fabric needling small sample machine to obtain the product with the surface density of 0.1kg/m²The non-woven fabric to obtain a wet tissue base material;

the impregnating solution is prepared from the following raw materials in parts by weight: 10-13 parts of blue vitriol, 4-5 parts of antibacterial agent and 120 parts of purified water;

adding copper sulfate pentahydrate and an antibacterial agent into purified water, and stirring to dissolve completely to obtain a soaking solution;

the non-irritant antibacterial disinfectant wet tissue is prepared by the following method:

completely immersing the wet tissue base material in the impregnating solution, soaking for 80-90min at 60-65 ℃, transferring to a baking machine, pre-baking for 4-5min at 75-80 ℃, heating to 120-130 ℃, baking for 3-4min, repeatedly washing for 5-6 times by using deionized water, drying in vacuum, finally soaking in 5% propylene glycol aqueous solution for 15-20min, and taking out to obtain the wet tissue.

2. The non-irritating antimicrobial moist wipe of claim 1, wherein said modified polypropylene fibers are prepared by:

s1, adding deionized water, an emulsifier, an initiator and a propylene monomer into a reaction kettle, introducing nitrogen, raising the temperature of the system to 68-70 ℃ under the conditions of nitrogen protection and stirring, and carrying out prepolymerization reaction for 40-50min under the temperature condition;

s2, stopping heating, naturally cooling the reaction kettle to room temperature, sequentially adding an emulsifier, an initiator, 3-propenyl-5, 5-dimethyl-hydantoin and a propylene monomer, raising the temperature of the system to 95-105 ℃ under the conditions of nitrogen protection and stirring, and carrying out copolymerization reaction for 4-5 hours at the temperature;

and S3, after the reaction is finished, adding methanol and saturated salt solution to demulsify, filtering, washing with water, and drying to obtain modified polypropylene, and melt-spinning the modified polypropylene into fibers to obtain the modified polypropylene fibers.

3. The non-irritating antimicrobial disinfectant wet wipe of claim 2, wherein 0.15-0.2g emulsifier, 0.08-0.1g initiator, 10-15g propylene monomer per 100g deionized water in step S1.

4. The non-irritating antimicrobial moist wipe of claim 2, wherein 0.1-0.2g emulsifier, 0.1-0.15g initiator, 3-4g 3-propenyl-5, 5-dimethyl-hydantoin, 15-20g polypropylene are added to 100g prepolymer obtained in step S1 in step S2.

5. The non-irritating antimicrobial moist wipe of claim 2, wherein the methanol and the saturated saline solution are added in amounts of 1/8 and 1/10, respectively, based on the mass of the reaction system in step S3.

6. The non-irritating antimicrobial disinfecting wet wipe of claim 1, wherein said antimicrobial agent is prepared by:

1) placing tetrahydrofuran in a three-neck flask, adding dimethylamine and 2-chloroformic acid into the flask at the temperature of 60 ℃ in a nitrogen atmosphere, stirring for reacting for 5-6h, cooling at room temperature, centrifuging, and purifying with ethanol to obtain a betaine derivative;

wherein the mass ratio of dimethylamine to 2-chloroformic acid is 1: 1.2; carrying out quaternization reaction on dimethylamine and 2-chlorobutadiene to generate a betaine derivative, wherein the derivative contains exposed carboxyl;

2) putting the betaine derivative and acrylamide according to a certain proportion into a four-neck flask with mechanical stirring and condensation reflux, adding an initiator APS under the conditions of nitrogen atmosphere and constant temperature of 70 ℃, reacting for 4-5h, cooling at room temperature, repeatedly purifying by acetone and ethanol, and drying in vacuum to obtain an antibacterial agent;

wherein the mass ratio of the betaine derivative to the acrylamide is 2:1, the mass fraction of the initiator is 2%, and the reaction time is 4 h.

7. The method for preparing the non-irritating antibacterial disinfecting wet wipe as claimed in claim 1, is characterized by comprising the following specific steps of:

completely immersing the wet tissue base material in the impregnating solution, soaking for 80-90min at 60-65 ℃, transferring to a baking machine, pre-baking for 4-5min at 75-80 ℃, heating to 120-130 ℃, baking for 3-4min, repeatedly washing for 5-6 times by using deionized water, drying in vacuum, finally soaking in 5% propylene glycol aqueous solution for 15-20min, and taking out to obtain the wet tissue.

Technical Field

The invention belongs to the technical field of daily necessities, and particularly relates to a non-irritant antibacterial disinfectant wet tissue and a preparation method thereof.

Background

The wet tissue is a disposable cleaning sanitary article prepared by selecting a wet-strength soft-fiber high-permeability base material, folding, humidifying and packaging, has the basic functions of cleaning and moisturizing skin, is convenient to carry and the like, and becomes an essential cleaning article in daily life of people. The wet tissue is generally composed of two parts of a substrate and liquid medicine, wherein the substrate is wet-strength paper or spunlace nonwoven, and the liquid medicine basic formula comprises water, humectant, preservative and nonionic surfactant. The preparation method comprises soaking the base material in the medicinal liquid, taking out the base material, and sealing and packaging to obtain the wet tissue. In the production process of the wet tissue, bacteria and mold in the air are easy to be mixed and polluted, so that the wet tissue is polluted. At present, chemical bactericides such as methylisothiazolinone, methylchloroisothiazolinone, benzethonium chloride and cetylpyridinium chloride are commonly used in wet tissues, and the chemical bactericides have moderate toxicity, irritation and potential safety hazards in use. In order to avoid using a toxic preservative to achieve the purpose of inhibiting the propagation of bacteria and fungi, the prior art generally adds high-concentration ethanol into wet tissues, wherein the concentration of the ethanol can exceed 50%, and when people with fragile skin use the wet tissues containing the ethanol at the concentration, the phenomenon of excessive dissolution of sebum on the surface layer of the skin can occur, so that the skin is dried and even allergic reaction is caused.

Disclosure of Invention

The invention aims to provide a non-irritant antibacterial disinfectant wet tissue and a preparation method thereof, the wet tissue comprises a wet tissue base material and an impregnating solution, the wet tissue base material is a non-woven fabric prepared by mixing modified polypropylene fibers, bamboo pulp fibers and cotton fibers, the non-woven fabric contains a large amount of bamboo pulp fibers and cotton fibers, has the characteristic of cotton and comfortable and soft hand feeling, and the modified polypropylene fibers have good antibacterial performance and can act with effective components in the impregnating solution; the impregnating solution contains an antibacterial agent and copper ion active ingredients, after the impregnating solution is used for impregnation, copper ions can be complexed with polypropylene fibers on the wet tissue base material, the antibacterial agent can be chemically bonded with cotton fibers on the wet tissue base material, so that the antibacterial active ingredients in the impregnating solution are grafted on the surface of the wet tissue base material, and the wet tissue base material has lasting and excellent antibacterial performance; after a user wipes skin or an object with the wet tissue, the wet tissue can be washed with water and continuously and repeatedly used for many times, and the wet tissue used by being stained with tap water still has good antibacterial capacity, so that the obtained wet tissue meets the requirement of environmental protection; in addition, the propylene glycol aqueous solution is finally adopted to wet the wet tissue, has no stimulation to the skin and brings good touch to the wet tissue.

The purpose of the invention can be realized by the following technical scheme:

a non-irritant antibacterial disinfectant wet tissue comprises a wet tissue base material and wetting liquid, wherein the wet tissue base material is made of modified polypropylene fibers, bamboo pulp fibers and cotton fibers;

mixing modified polypropylene fiber, bamboo pulp fiber and cotton fiber according to the mass ratio of 1:1:2, opening, removing impurities, forming a net on a carding combination device, and then preparing the mixture on a non-woven fabric needling small sample machine to obtain the product with the surface density of 0.1kg/m²The non-woven fabric to obtain a wet tissue base material;

the impregnating solution is prepared from the following raw materials in parts by weight: 10-13 parts of blue vitriol, 4-5 parts of antibacterial agent and 120 parts of purified water;

adding copper sulfate pentahydrate and an antibacterial agent into purified water, and stirring to dissolve completely to obtain a soaking solution;

the non-irritant antibacterial disinfectant wet tissue is prepared by the following method:

completely immersing the wet tissue base material in the impregnating solution, soaking for 80-90min at 60-65 ℃, transferring to a baking machine, pre-baking for 4-5min at 75-80 ℃, heating to 120-130 ℃, baking for 3-4min, repeatedly washing for 5-6 times by using deionized water, removing the substances such as the copper ions, the antibacterial agent and the like which are not loaded, drying in vacuum, finally soaking in a propylene glycol aqueous solution with the mass concentration of 5% for 15-20min, and taking out to obtain the wet tissue.

Further, the modified polypropylene fiber is prepared by the following method:

s1, adding deionized water, an emulsifier, an initiator and a propylene monomer into a reaction kettle, introducing nitrogen, raising the temperature of the system to 68-70 ℃ under the conditions of nitrogen protection and stirring, and carrying out prepolymerization reaction for 40-50min under the temperature condition;

s2, stopping heating, naturally cooling the reaction kettle to room temperature, sequentially adding an emulsifier, an initiator, 3-propenyl-5, 5-dimethyl-hydantoin and a propylene monomer, raising the temperature of the system to 95-105 ℃ under the conditions of nitrogen protection and stirring, and carrying out copolymerization reaction for 4-5 hours at the temperature;

and S3, after the reaction is finished, adding methanol and saturated salt solution to demulsify, filtering, washing with water, and drying to obtain modified polypropylene, and melt-spinning the modified polypropylene into fibers to obtain the modified polypropylene fibers.

Further, in step S1, 0.15-0.2g of emulsifier, 0.08-0.1g of initiator and 10-15g of propylene monomer are added per 100g of deionized water.

Further, in step S2, 0.1 to 0.2g of an emulsifier, 0.1 to 0.15g of an initiator, 3 to 4g of 3-propenyl-5, 5-dimethyl-hydantoin, and 15 to 20g of polypropylene are added per 100g of the prepolymer obtained in step S1.

Further, in step S3, methanol and a saturated saline solution were added in amounts of 1/8 and 1/10, respectively, based on the mass of the reaction system.

Further, the antibacterial agent is prepared by the following method:

1) placing tetrahydrofuran in a three-neck flask, adding dimethylamine and 2-chloroformic acid into the flask at the temperature of 60 ℃ in a nitrogen atmosphere, stirring for reacting for 5-6h, cooling at room temperature, centrifuging, and purifying with ethanol to obtain a betaine derivative;

wherein the mass ratio of dimethylamine to 2-chloroformic acid is 1: 1.2; carrying out quaternization reaction on dimethylamine and 2-chlorobutadiene to generate a betaine derivative, wherein the derivative contains exposed carboxyl;

2) putting the betaine derivative and acrylamide according to a certain proportion into a four-neck flask with mechanical stirring and condensation reflux, adding an initiator APS under the conditions of nitrogen atmosphere and constant temperature of 70 ℃, reacting for 4-5h, cooling at room temperature, repeatedly purifying by acetone and ethanol, and drying in vacuum to obtain an antibacterial agent;

wherein the mass ratio of the betaine derivative to the acrylamide is 2:1, the mass fraction of the initiator is 2%, and the reaction time is 4 h.

A preparation method of a non-irritant antibacterial disinfectant wet tissue comprises the following specific steps:

completely immersing the wet tissue base material in the impregnating solution, soaking for 80-90min at 60-65 ℃, transferring to a baking machine, pre-baking for 4-5min at 75-80 ℃, heating to 120-130 ℃, baking for 3-4min, repeatedly washing for 5-6 times by using deionized water, removing the substances such as the copper ions, the antibacterial agent and the like which are not loaded, drying in vacuum, finally soaking in a propylene glycol aqueous solution with the mass concentration of 5% for 15-20min, and taking out to obtain the wet tissue.

The invention has the beneficial effects that:

the wet tissue comprises a wet tissue base material and wetting liquid, wherein the wet tissue base material is a non-woven fabric prepared by mixing modified polypropylene fibers, bamboo pulp fibers and cotton fibers, and the non-woven fabric contains a large amount of bamboo pulp fibers and cotton fibers, has the characteristic of cotton and has comfortable and soft hand feeling; in addition, modified polypropylene is adopted as one of raw materials, 3-propenyl-5, 5-dimethyl-hydantoin is used as a PP modifier, 3-propenyl-5, 5-dimethyl-hydantoin is an antibacterial monomer, allyl groups contained on the monomer can participate in the copolymerization reaction process of polypropylene, and the substance is blocked into a polypropylene molecular chain as the modifier, so that the polypropylene molecule has an antibacterial function, and the antibacterial monomer is combined with the polypropylene molecular chain through a bonding effect, has extremely high migration resistance and solvent resistance, and can enable the polypropylene to have lasting antibacterial performance; the ureide substance is introduced into the side chain of the polypropylene molecule, the ureide substance on the side chain of the molecule contains-NH-group, the primary amine group is directly connected with the ketone group, the reaction activity is higher, the ureide substance can play a chemical complexing role with copper ions in the impregnating solution, so that the antibacterial active ingredient is chemically immobilized on the wet tissue base material, and the lasting antibacterial property of the wet tissue base material is realized;

the impregnating solution disclosed by the invention adopts an antibacterial agent and copper ions as antibacterial active ingredients, the antibacterial agent is formed by polymerizing a betaine derivative and acrylamide, the betaine derivative is a zwitterion compound and has strong thermal stability, chemical stability, biocompatibility and no cytotoxicity, and anion and cation groups in a macromolecule composition can resist bacterial adhesion, prevent the formation of a biological bacterial film and inhibit bacterial reproduction, so that the impregnating solution is a good natural nontoxic antibacterial agent; the antibacterial agent contains exposed carboxyl groups of betaine derivatives, and the carboxyl groups can react with-OH on cotton fibers to graft antibacterial agent molecules on the cotton fibers through chemical bonding; after the wet tissue base material is soaked by the soaking liquid, copper ions can be complexed with polypropylene fibers on the wet tissue base material, and the antibacterial agent can be chemically bonded with cotton fibers on the wet tissue base material, so that the antibacterial active ingredient in the soaking liquid is grafted to the surface of the wet tissue base material, and the wet tissue base material has lasting and excellent antibacterial performance; after a user wipes skin or an object with the wet tissue, the wet tissue can be washed with water and continuously and repeatedly used for many times, and the wet tissue used by being stained with tap water still has good antibacterial capacity, so that the obtained wet tissue meets the requirement of environmental protection;

the wet tissue comprises a wet tissue base material and an impregnating solution, wherein the wet tissue base material is a non-woven fabric prepared by mixing modified polypropylene fibers, bamboo pulp fibers and cotton fibers, the non-woven fabric contains a large amount of bamboo pulp fibers and cotton fibers, has the characteristic of cotton quality, has comfortable and soft hand feeling, and the modified polypropylene fibers have good antibacterial performance and can act with active ingredients in the impregnating solution; the impregnating solution contains an antibacterial agent and copper ion active ingredients, after the impregnating solution is used for impregnation, copper ions can be complexed with polypropylene fibers on the wet tissue base material, the antibacterial agent can be chemically bonded with cotton fibers on the wet tissue base material, so that the antibacterial active ingredients in the impregnating solution are grafted on the surface of the wet tissue base material, and the wet tissue base material has lasting and excellent antibacterial performance; after a user wipes skin or an object with the wet tissue, the wet tissue can be washed with water and continuously and repeatedly used for many times, and the wet tissue used by being stained with tap water still has good antibacterial capacity, so that the obtained wet tissue meets the requirement of environmental protection; in addition, the propylene glycol aqueous solution is finally adopted to wet the wet tissue, has no stimulation to the skin and brings good touch to the wet tissue.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A non-irritant antibacterial disinfectant wet tissue comprises a wet tissue base material and an impregnating solution;

the wet tissue base material is prepared from modified polypropylene fibers, bamboo pulp fibers and cotton fibers, the modified polypropylene fibers, the bamboo pulp fibers and the cotton fibers are mixed according to the mass ratio of 1:1:2, and then are loosened, decontaminated and formed into a net on a carding combination device, and then are made into a non-woven fabric needling sample machine with the surface density of 0.1kg/m²The non-woven fabric to obtain a wet tissue base material;

the modified polypropylene fiber is prepared by the following method:

s1, adding deionized water, an emulsifier, an initiator and a propylene monomer into a reaction kettle, introducing nitrogen, raising the temperature of the system to 68-70 ℃ under the conditions of nitrogen protection and stirring, and carrying out prepolymerization reaction for 40-50min under the temperature condition;

adding 0.15-0.2g of emulsifier, 0.08-0.1g of initiator and 10-15g of propylene monomer into every 100g of deionized water;

s2, stopping heating, naturally cooling the reaction kettle to room temperature, sequentially adding an emulsifier, an initiator, 3-propenyl-5, 5-dimethyl-hydantoin and a propylene monomer, raising the temperature of the system to 95-105 ℃ under the conditions of nitrogen protection and stirring, and carrying out copolymerization reaction for 4-5 hours at the temperature;

adding 0.1-0.2g of emulsifier, 0.1-0.15g of initiator, 3-4g of 3-propenyl-5, 5-dimethyl-hydantoin and 15-20g of polypropylene into 100g of prepolymer obtained in the step S1;

s3, after the reaction is finished, adding methanol and saturated salt solution for demulsification, filtering, washing with water, and drying to obtain modified polypropylene, and melt-spinning the modified polypropylene into fibers to obtain modified polypropylene fibers;

the adding amounts of the methanol and the saturated saline solution are 1/8 and 1/10 of the mass of the reaction system respectively;

3-propenyl-5, 5-dimethyl-hydantoin is an antibacterial monomer, allyl groups contained on the antibacterial monomer can participate in the copolymerization reaction process of polypropylene, so that the substance is blocked into a polypropylene molecular chain as a modifier, the polypropylene molecules have an antibacterial function, and the antibacterial monomer is combined with the polypropylene molecular chain through a bonding effect, has extremely high migration resistance and solvent resistance, and can enable the polypropylene to have lasting antibacterial performance; the ureide substance is introduced into the side chain of the polypropylene molecule, the ureide substance on the side chain of the molecule contains-NH-group, the primary amine group is directly connected with the ketone group, the reaction activity is higher, the ureide substance can play a chemical complexing role with copper ions in the impregnating solution, so that the antibacterial active ingredient is chemically immobilized on the wet tissue base material, and the lasting antibacterial property of the wet tissue base material is realized;

the impregnating solution is prepared from the following raw materials in parts by weight: 10-13 parts of blue vitriol, 4-5 parts of antibacterial agent and 120 parts of purified water;

adding copper sulfate pentahydrate and an antibacterial agent into purified water, and stirring to dissolve completely to obtain a soaking solution;

the antibacterial agent is prepared by the following method:

1) placing tetrahydrofuran in a three-neck flask, adding dimethylamine and 2-chloroformic acid into the flask at the temperature of 60 ℃ in a nitrogen atmosphere, stirring for reacting for 5-6h, cooling at room temperature, centrifuging, and purifying with ethanol to obtain a betaine derivative;

wherein the mass ratio of dimethylamine to 2-chloroformic acid is 1: 1.2; carrying out quaternization reaction on dimethylamine and 2-chlorobutadiene to generate a betaine derivative, wherein the derivative contains exposed carboxyl;

2) putting the betaine derivative and acrylamide according to a certain proportion into a four-neck flask with mechanical stirring and condensation reflux, adding an initiator APS under the conditions of nitrogen atmosphere and constant temperature of 70 ℃, reacting for 4-5h, cooling at room temperature, repeatedly purifying by acetone and ethanol, and drying in vacuum to obtain an antibacterial agent;

wherein the mass ratio of the betaine derivative to the acrylamide is 2:1, the mass fraction of the initiator is 2%, and the reaction time is 4 h;

the betaine derivative and acrylamide are polymerized to generate the betaine type antibacterial agent; the betaine derivative is a zwitterion compound, has strong thermal stability, chemical stability, biocompatibility and no cytotoxicity, and anion and cation groups in macromolecular composition can resist bacterial adhesion, prevent the formation of a biological bacterial film and inhibit bacterial reproduction, so the betaine derivative is a good natural non-toxic antibacterial agent; the antibacterial agent contains exposed carboxyl groups of betaine derivatives, and the carboxyl groups can react with-OH on cotton fibers to graft antibacterial agent molecules on the cotton fibers through chemical bonding; after the wet tissue base material is soaked by the soaking liquid, copper ions can be complexed with polypropylene fibers on the wet tissue base material, and the antibacterial agent can be chemically bonded with cotton fibers on the wet tissue base material, so that the antibacterial active ingredient in the soaking liquid is grafted to the surface of the wet tissue base material, and the wet tissue base material has lasting and excellent antibacterial performance; after a user wipes skin or an object with the wet tissue, the wet tissue can be washed with water and continuously and repeatedly used for many times, and the wet tissue used by being stained with tap water still has good antibacterial capacity, so that the obtained wet tissue meets the requirement of environmental protection;

the preparation method of the wet tissue comprises the following steps:

completely immersing the wet tissue base material in the impregnating solution, soaking for 80-90min at 60-65 ℃, transferring to a baking machine, pre-baking for 4-5min at 75-80 ℃, heating to 120-130 ℃, baking for 3-4min, repeatedly washing for 5-6 times by using deionized water, removing the substances such as the copper ions, the antibacterial agent and the like which are not loaded, drying in vacuum, finally soaking in a propylene glycol aqueous solution with the mass concentration of 5% for 15-20min, and taking out to obtain the wet tissue.