阅读说明：本技术 一种高吸水抗菌洗脸巾及其制备工艺 (High-water-absorption antibacterial face washing towel and preparation process thereof ) 是由 刘平莉 于 2021-06-25 设计创作，主要内容包括：本发明公开了一种高吸水抗菌洗脸巾,其原料按重量比包括26-38％的银纤维和余量常规纤维,且银纤维和常规纤维均采用抗菌整理剂进行整理属于日常生活用品技术领域。通过采用异佛尔酮二异氰酸酯为原料,将N,N-二甲基乙醇胺和异佛尔酮二异氰酸酯之间催化反应,引入季铵基团,在银纤维和常规纤维的表面引入季铵基团,使银纤维和常规纤维的粗糙度增加,比表面积增大,使银纤维和常规纤维具有较好的抗菌性能和抗菌粘附性,同时抗菌整理剂上的季铵基团和酰胺基都是亲水基团,在对银纤维和常规纤维整理后,制成的洗脸巾表面引进了酰胺基、季铵基团强亲水基团,使洗脸巾具有较高的吸水性。(The invention discloses a high-water-absorption antibacterial face washing towel, which comprises 26-38% of silver fiber and the balance of conventional fiber by weight, wherein the silver fiber and the conventional fiber are both finished by adopting an antibacterial finishing agent, and belongs to the technical field of daily necessities. By adopting isophorone diisocyanate as a raw material, N-dimethylethanolamine and isophorone diisocyanate are subjected to catalytic reaction, quaternary ammonium groups are introduced, the quaternary ammonium groups are introduced on the surfaces of silver fibers and conventional fibers, so that the roughness of the silver fibers and the conventional fibers is increased, the specific surface area is increased, the silver fibers and the conventional fibers have better antibacterial performance and antibacterial adhesion, meanwhile, the quaternary ammonium groups and the amido groups on the antibacterial finishing agent are hydrophilic groups, and after the silver fibers and the conventional fibers are finished, the prepared face towel is introduced with the amido groups and strong hydrophilic groups of the quaternary ammonium groups, so that the face towel has higher water absorption.)

1. The utility model provides a antibiotic face towel that washes of high water absorption which characterized in that: the raw materials comprise 26-38% of silver fiber and the balance of conventional fiber by weight ratio, and the silver fiber and the conventional fiber are both finished by adopting an antibacterial finishing agent;

the antibacterial finishing agent is prepared by the following steps:

adding isophorone diisocyanate and tetrahydrofuran into a reaction kettle, stirring for reacting for 25-30min, dropwise adding N, N-dimethylethanolamine, adding a catalyst after dropwise adding is finished, and stirring for reacting for 40-60min to obtain an intermediate 1;

adding the intermediate 1, acrylamide and azodiisobutyronitrile into a reaction kettle, and stirring for reaction for 30-45min to obtain an intermediate 2;

and step three, adding the intermediate 2, 1, 3-propane sultone and tetrahydrofuran into a reaction kettle, stirring for reaction for 60-90min, carrying out suction filtration and cleaning on the product, and finally placing the product into a vacuum drying oven to be dried for 8-10h at constant temperature of 40-50 ℃ to obtain the antibacterial finishing agent.

2. The highly water-absorbing antibacterial washcloth according to claim 1, characterized in that: in the first step, the dosage ratio of isophorone diisocyanate, tetrahydrofuran, N-dimethylethanolamine and catalyst is 4.3 mL: 60mL of: 2.5 mL: 0.3mL, dibutyltin dilaurate was used as the catalyst.

3. The highly water-absorbing antibacterial washcloth according to claim 1, characterized in that: in the second step, the dosage ratio of the intermediate 1, the acrylamide and the azobisisobutyronitrile is 5.5mL to 2.8mL to 0.5 mL.

4. The highly water-absorbing antibacterial washcloth according to claim 1, characterized in that: in the third step, the dosage ratio of the intermediate 2, the 1, 3-propane sultone and the tetrahydrofuran is 5.5mL: 2.5 mL: 60 mL.

5. The highly water-absorbing antibacterial washcloth according to claim 1, characterized in that: the fiber matrix of the silver fiber adopts 95% of cotton fiber and 5% of wool fiber.

6. The highly water-absorbing antibacterial washcloth according to claim 1, characterized in that: the conventional fiber adopts spandex fiber, nylon fiber and acrylic fiber, and the mass ratio of the spandex fiber to the nylon fiber to the acrylic fiber is 1:2-3: 1-5.

7. The preparation process of the high water absorption antibacterial washcloth according to claim 1, characterized in that: the method comprises the following steps:

firstly, adding an antibacterial finishing agent and deionized water into a container, and stirring and dissolving for 25-30min to obtain an antibacterial finishing agent solution;

secondly, padding the silver fibers and the conventional fibers in an antibacterial finishing agent solution, controlling the temperature of the antibacterial finishing agent solution to be 35-40 ℃, padding for 20-30min, drying the silver fibers and the conventional fibers subjected to primary padding in a vacuum drying oven at a constant temperature of 50-60 ℃ for 2-3h, then performing secondary padding treatment on the silver fibers and the conventional fibers by using the antibacterial finishing agent solution, and finally performing drying treatment under the same drying condition;

and thirdly, spinning the silver fibers and the conventional fibers which are subjected to the padding treatment by the antibacterial finishing agent solution twice to prepare antibacterial cotton threads, spinning the antibacterial cotton threads to prepare antibacterial face washing towels, soaking the antibacterial face washing towels in alcohol-based quaternary ammonium salt for 30-40min, and drying to obtain the high-water-absorption antibacterial face washing towels.

Technical Field

The invention relates to the technical field of daily necessities, in particular to a high-water-absorption antibacterial face washing towel and a preparation process thereof.

Background

The towel is one of necessary daily necessities for people. The invention provides a high-water-absorption antibacterial face washing towel, which solves the problems of poor antibacterial effect and poor water absorption of the existing face washing towel.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a high-water-absorption antibacterial face washing towel and a preparation process thereof, and solves the problems of poor antibacterial effect and poor water absorption of the existing face washing towel.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a high water absorption antibacterial face towel comprises raw materials of 26-38% of silver fiber and the balance of conventional fiber by weight ratio, and the silver fiber and the conventional fiber are both finished by adopting an antibacterial finishing agent;

the antibacterial finishing agent is prepared by the following steps:

step one, adding isophorone diisocyanate and tetrahydrofuran into a reaction kettle, stirring for 25-30min at the rotation speed of 200-300r/min and the temperature of 35-40 ℃, dropwise adding N, N-dimethylethanolamine, adding a catalyst after dropwise adding, and stirring for 40-60min at the rotation speed of 200-60 ℃ to obtain an intermediate 1;

the reaction process is as follows:

step two, adding the intermediate 1, acrylamide and azodiisobutyronitrile into a reaction kettle, and stirring for 30-45min under the conditions that the rotating speed is 180-165 ℃ and the temperature is 250-min to obtain an intermediate 2;

the reaction process is as follows:

and step three, adding the intermediate 2, 1, 3-propane sultone and tetrahydrofuran into a reaction kettle, stirring for 60-90min at the rotation speed of 300-350r/min and the temperature of 45-55 ℃, then performing suction filtration and cleaning on the product, and finally placing the product in a vacuum drying box for drying at constant temperature of 40-50 ℃ for 8-10h to obtain the antibacterial finishing agent.

The reaction process is as follows:

preferably, in the first step, the usage ratio of isophorone diisocyanate, tetrahydrofuran, N-dimethylethanolamine and catalyst is 4.3 mL: 60mL of: 2.5 mL: 0.3mL, dibutyltin dilaurate was used as the catalyst.

Preferably, in the second step, the using amount ratio of the intermediate 1, the acrylamide and the azobisisobutyronitrile is 5.5mL to 2.8mL to 0.5 mL.

Preferably, in the third step, the dosage ratio of the intermediate 2, the 1, 3-propane sultone and the tetrahydrofuran is 5.5mL: 2.5 mL: 60 mL.

Preferably, the fiber matrix of the silver fibers adopts 95% of cotton fibers and 5% of wool fibers.

Preferably, the conventional fiber adopts spandex fiber, nylon fiber and acrylic fiber, and the mass ratio of the spandex fiber to the nylon fiber to the acrylic fiber is 1:2-3: 1-5.

Preferably, the preparation process of the high-water-absorption antibacterial face washing towel comprises the following steps:

firstly, adding an antibacterial finishing agent and deionized water into a container, and stirring for 25-30min under the conditions that the rotating speed is 180-200r/min and the temperature is 25-30 ℃ to obtain an antibacterial finishing agent solution;

secondly, padding the silver fibers and the conventional fibers in an antibacterial finishing agent solution, controlling the temperature of the antibacterial finishing agent solution to be 35-40 ℃, padding for 20-30min, drying the silver fibers and the conventional fibers subjected to primary padding in a vacuum drying oven at a constant temperature of 50-60 ℃ for 2-3h, then performing secondary padding treatment on the silver fibers and the conventional fibers by using the antibacterial finishing agent solution, and finally performing drying treatment under the same drying condition;

and thirdly, spinning the silver fibers and the conventional fibers which are subjected to the padding treatment by the antibacterial finishing agent solution twice to prepare antibacterial cotton threads, spinning the antibacterial cotton threads to prepare antibacterial face washing towels, soaking the antibacterial face washing towels in alcohol-based quaternary ammonium salt for 30-40min, and drying to obtain the high-water-absorption antibacterial face washing towels.

(III) advantageous effects

Compared with the prior art, the high-water-absorption antibacterial face washing towel and the preparation process thereof have the following beneficial effects:

the invention prepares an antibacterial finishing agent in the process of preparing a high water absorption antibacterial washcloth, the antibacterial finishing agent adopts isophorone diisocyanate as raw material, N-dimethylethanolamine and isophorone diisocyanate are catalyzed to react to obtain an intermediate 1, then the intermediate 1 is reacted with acrylamide to obtain an intermediate 2, the intermediate 2 is reacted with 1, 3-propane sultone to obtain the antibacterial finishing agent, the antibacterial finishing agent contains quaternary ammonium groups and amide groups, after silver fibers and conventional fibers are subjected to padding treatment twice by the antibacterial finishing agent, quaternary ammonium groups can be introduced into the surfaces of the silver fibers and the conventional fibers, so that the roughness of the silver fibers and the conventional fibers is increased, the specific surface area is increased, the silver fibers and the conventional fibers have better antibacterial performance and antibacterial adhesion, and the quaternary ammonium groups and the amide groups on the antibacterial finishing agent are hydrophilic groups, after the silver fibers and the conventional fibers are finished, strong hydrophilic groups such as amide groups and quaternary ammonium groups are introduced into the surface of the prepared face washing towel, so that the face washing towel has high water absorption.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

Example 1:

the antibacterial finishing agent is prepared by the following steps:

step one, adding 4.3mL of isophorone diisocyanate and 60mL of tetrahydrofuran into a reaction kettle, stirring for 25min at the rotation speed of 200r/min and the temperature of 35 ℃, dropwise adding 2.5mL of N-dimethylethanolamine, after dropwise adding, adding 2.5mL of catalyst, and stirring for 40min at the rotation speed of 150r/min and the temperature of 50 ℃ to obtain an intermediate 1;

step two, adding 5.5mL of the intermediate 1, 2.8mL of acrylamide and 0.5mL of azobisisobutyronitrile into a reaction kettle, and stirring for 30min under the conditions of the rotating speed of 180r/min and the temperature of 150 ℃ to obtain an intermediate 2;

and step three, adding 5.5mL of intermediate 2, 2.5mL of 1, 3-propane sultone and 60mL of tetrahydrofuran into a reaction kettle, stirring for 60min at the rotation speed of 300r/min and the temperature of 45 ℃, carrying out suction filtration and cleaning on the product, and finally drying the product in a vacuum drying oven at constant temperature of 40 ℃ for 8h to obtain the antibacterial finishing agent.

Example 2:

the antibacterial finishing agent is prepared by the following steps:

step one, adding 6.9mL of isophorone diisocyanate and 80mL of tetrahydrofuran into a reaction kettle, stirring for 25min at the rotation speed of 200r/min and the temperature of 35 ℃, dropwise adding 2.5mL of N-dimethylethanolamine, after dropwise adding, adding 3.6mL of catalyst, and stirring for 40min at the rotation speed of 150r/min and the temperature of 50 ℃ to obtain an intermediate 1;

step two, adding 8.5mL of intermediate 1, 4.2mL of acrylamide and 1.6mL of azobisisobutyronitrile into a reaction kettle, and stirring for 30min under the conditions of the rotating speed of 180r/min and the temperature of 150 ℃ to obtain an intermediate 2;

and step three, adding 9.8mL of intermediate 2, 3.5mL of 1, 3-propane sultone and 80mL of tetrahydrofuran into a reaction kettle, stirring for 60min at the rotation speed of 300r/min and the temperature of 45 ℃, carrying out suction filtration and cleaning on the product, and finally drying the product in a vacuum drying oven at constant temperature of 40 ℃ for 8h to obtain the antibacterial finishing agent.

Example 3:

a preparation process of a high-water-absorption antibacterial face washing towel comprises the following steps:

firstly, adding the antibacterial finishing agent prepared in the embodiment 1 and deionized water into a container, and stirring for 25min at the rotating speed of 180r/min and the temperature of 25 ℃ to obtain an antibacterial finishing agent solution;

secondly, padding the silver fibers and the conventional fibers in an antibacterial finishing agent solution, controlling the temperature of the antibacterial finishing agent solution to be 35 ℃, padding for 20min, drying the silver fibers and the conventional fibers subjected to primary padding in a vacuum drying oven at a constant temperature of 50 ℃ for 2h, then performing secondary padding treatment on the silver fibers and the conventional fibers with the antibacterial finishing agent solution, and finally performing drying treatment under the same drying conditions;

and thirdly, spinning the silver fibers and the conventional fibers which are subjected to the padding treatment by the antibacterial finishing agent solution twice to prepare antibacterial cotton threads, spinning the antibacterial cotton threads to prepare antibacterial face washing towels, soaking the antibacterial face washing towels in alcohol-based quaternary ammonium salt for 30min, and drying to obtain the high-water-absorption antibacterial face washing towels.

Example 4:

a preparation process of a high-water-absorption antibacterial face washing towel comprises the following steps:

step one, adding the antibacterial finishing agent prepared in the embodiment 2 and deionized water into a container, and stirring for 25min at the rotating speed of 180r/min and the temperature of 25 ℃ to obtain an antibacterial finishing agent solution;

secondly, padding the silver fibers and the conventional fibers in an antibacterial finishing agent solution, controlling the temperature of the antibacterial finishing agent solution to be 35 ℃, padding for 30min, drying the silver fibers and the conventional fibers subjected to primary padding in a vacuum drying oven at a constant temperature of 60 ℃ for 3h, then performing secondary padding treatment on the silver fibers and the conventional fibers with the antibacterial finishing agent solution, and finally performing drying treatment under the same drying conditions;

and thirdly, spinning the silver fibers and the conventional fibers which are subjected to the padding treatment by the antibacterial finishing agent solution twice to prepare antibacterial cotton threads, spinning the antibacterial cotton threads to prepare antibacterial face washing towels, soaking the antibacterial face washing towels in alcohol-based quaternary ammonium salt for 40min, and drying to obtain the high-water-absorption antibacterial face washing towels.

Comparative example 1:

this comparative example used the silver ion antibacterial towel proposed in CN 110273296A.

Comparative example 2:

this comparative example used a commercially available washcloth.

Comparative experiment:

selecting the face washing towels in the examples 3-4 and the comparative examples 1-2, according to GB/T20944.3-2008, adopting an oscillation method, calculating the antibacterial rate by comparing the colony number of bacteria cultured in an agar culture medium for 16 hours, so as to analyze the antibacterial performance before and after finishing the textile, wherein the comparative bacteria adopt escherichia coli, staphylococcus aureus, acinetobacter baumannii and staphylococcus epidermidis, and the comprehensive antibacterial performance test results are as follows:

TABLE 1

	Example 3	Example 4	Comparative example 1	Comparative example 2
					Bacteriostatic ratio (%)	99.56	99.81	85.66	63.15

As can be seen from Table 1, the bacteriostatic rate of the washcloth in the examples 3-4 is 99.56-99.81%, which is obviously higher than that of the washcloth in the comparative examples 1-2, and the washcloth provided by the invention has a good bacteriostatic effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.