CN112341646A - Self-antibacterial anti-mildew household glove and preparation method thereof - Google Patents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
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- C08J2307/02—Latex
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- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/06—Sulfur
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
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Abstract
The invention discloses a self-antibacterial and anti-mildew household glove and a preparation method thereof. The preparation method comprises the following steps: preparing nano antibacterial vulcanized latex by adopting natural latex and inorganic nano antibacterial compound dispersion liquid; soaking a coagulant after washing the mold and drying; dipping the nano antibacterial vulcanized latex for the first time, shaping and drying, dipping the nano antibacterial vulcanized latex for the second time, shaping and drying, and preparing the self-antibacterial mildew-proof household gloves. The household gloves prepared by the invention have the advantages of antibacterial property, high mechanical strength, mildew prevention, difficult damage and good protection effect.
Description
Technical Field
The invention relates to the technical field of latex materials, in particular to a self-antibacterial and anti-mildew household glove and a preparation method thereof.
Background
Along with the continuous improvement of protection consciousness of people, the application field of the gloves is wider and wider. The thin gloves are convenient to wear and low in cost, and are widely applied to various fields, such as food industry, medical industry, electronic industry and the like. The thin gloves are comfortable to wear and easy to use, so that a lot of protective products are available, and the thin gloves mainly comprise PE gloves, PVC gloves, butyronitrile gloves, latex gloves and other rubber gloves as common hand protection labor tools according to materials, and play a role difficult to replace in daily life of people. With the improvement of living standard, people have more demands on household gloves, and the household latex gloves are expected to play a role in isolation and protection, and also to reduce the risk of virus infection and prevent mildew through the antibacterial function of the gloves.
In the prior art, a nano-silver series antibacterial agent, an anion series antibacterial agent, antibiotics or medicines with antibacterial property and the like are added into natural latex to achieve an antibacterial effect. However, the silver series materials have influence on internal organs in human bodies, and the addition of antibiotics or medicines with antibacterial property has the defects of inapplicability to human bodies, time limitation and the like.
Disclosure of Invention
Based on the problems, the invention aims to provide a self-antibacterial and anti-mildew household glove with high mechanical strength, high barrier property and antibacterial property and a preparation method thereof.
The above purpose of the invention is realized by the following technical scheme:
according to one aspect of the present invention, there is provided a method for preparing a self-antibacterial and anti-mold household glove, comprising the steps of:
step S1, preparing nano antibacterial vulcanized latex by adopting natural latex and inorganic nano antibacterial compound dispersion liquid;
step S2, dipping the coagulant after washing the mold and drying;
and step S3, dipping the nano antibacterial vulcanized latex twice, shaping and drying to prepare the self-antibacterial mildew-proof household glove.
Preferably, in step S1, the step of preparing the nano antibacterial vulcanized latex includes:
step S11, adding graphene oxide and zinc oxide into a high molecular dispersant for dispersion to prepare an inorganic nano antibacterial compound dispersion liquid;
step S12, placing the inorganic nano antibacterial compound dispersion liquid in an ultrasonic cleaning machine for ultrasonic treatment for 10-30 min, adding the inorganic nano antibacterial compound dispersion liquid after ultrasonic treatment into natural latex, stirring until the inorganic nano antibacterial compound dispersion liquid is uniformly dispersed, and adding a latex auxiliary agent to prepare a nano antibacterial compound latex solution;
and step S13, carrying out water vulcanization on the nano antibacterial matching latex solution, cooling, filtering and standing to prepare the nano antibacterial vulcanized latex.
Preferably, step S11 includes the following steps:
weighing raw materials, wherein the raw materials comprise the following components in parts by weight: 5-20 parts of graphene oxide, 5-20 parts of zinc oxide and 1-15 parts of a water-based dispersant;
adding the raw materials into a stirrer, uniformly stirring, and soaking for 1-5 hours;
and (3) adding the mixture into a high-shear homogenizer for dispersing for 1-5 hours to obtain the inorganic nano antibacterial compound dispersion liquid.
Preferably, in step S12, the inorganic nano-antibacterial compound dispersion is added in an amount of 0.1% to 15% based on the natural rubber latex. More preferably, in step S12, the inorganic nano-antibacterial complex dispersion is added in an amount of 0.1% to 5% based on the natural rubber latex.
Preferably, in step S13, the water vulcanization temperature is 55-80 ℃, and the temperature rise time is 30-60 min.
Preferably, step S3 specifically includes the following steps:
dipping nano antibacterial vulcanized latex for the first time, sizing in two sections, leaching after homogenizing and sizing in one section, and then sizing in the second section;
dipping the nano antibacterial vulcanized latex for the second time, sizing in two sections, leaching after homogenizing and sizing in one section, and then sizing in the second section;
dipping a coating agent, homogenizing and curling, and then performing glue film drying for the first section, glue film drying for the second section and glue film drying for the third section;
dipping hot water, dipping a separant, drying, demolding, soaking and washing with water, throwing water and removing a coating agent, and drying to obtain the self-antibacterial and anti-mildew household glove.
According to another aspect of the present invention, there is provided a self-antibacterial and anti-mold household glove, comprising the following raw materials: raw materials and soft water, the raw materials include, by weight: 100 parts of natural latex, 0.1-15 parts of inorganic nano antibacterial compound dispersion liquid and 2.7-6 parts of latex auxiliary agent; the latex auxiliary agent comprises one or more of a stabilizer, a vulcanizing agent, an accelerator, an anti-aging agent and an active agent.
Preferably, the latex auxiliary agent comprises the following components in parts by weight: 0.2-0.5 part of stabilizer, 0.5-1.5 parts of vulcanizing agent, 0.5-1.0 part of accelerator, 0.5-1.4 parts of anti-aging agent and 1.0-1.5 parts of activator.
The self-antibacterial and anti-mildew household glove is prepared by the preparation method.
Compared with the prior art, the household gloves prepared by the invention have antibacterial performance, the gloves are prevented from mildewing, and the functions of sterilization and bacteriostasis are realized by adopting inorganic nano antibacterial materials; the novel protective film has a compact structure and high mechanical strength, can effectively prevent viruses and bacteria from permeating, is not easy to damage, and can realize real complete protection. Specifically, the invention adopts inorganic nano antibacterial compound dispersion liquid to modify natural latex to obtain nano antibacterial complex latex solution, water sulfurizes to obtain nano antibacterial vulcanized latex, and then the nano antibacterial vulcanized latex is added into a production line according to the production process of household gloves to obtain the self-antibacterial anti-mildew household gloves.
The inorganic nano antibacterial compound dispersion liquid prepared by the invention is used as a novel multifunctional inorganic material, has stable physical and chemical properties, high and easily obtained oxidation activity, and has the characteristics of no toxicity, no migration, strong antibacterial property and the like; has the characteristics of strong biocompatibility, biodegradability, rich active functional groups (functional groups) and the like; the structure and composition of the antibacterial agent have unique characteristics such as quantum size effect, interface effect and the like, the surface of the antibacterial agent is provided with a stable active group which can form active oxygen free radicals, and the active oxygen free radicals can be oxidized and killed under the action of oxygen atoms and oxygen free radicals by damaging bacterial cell membranes and inhibiting the synthesis of bacterial proteins and interfering the synthesis of bacterial cell walls and bacterial nucleic acids, so that the purposes of inhibiting bacterial reproduction and killing bacteria are achieved, and the antibacterial agent can be used as a long-acting, safe and efficient antibacterial agent.
The inorganic nano antibacterial compound dispersion liquid is applied to latex to prepare the self-antibacterial and anti-mildew household gloves, so that the gloves have the advantages of strong antibacterial force, good durability, wide antibacterial spectrum, no drug resistance, no toxicity to the environment and the like; the strength of the latex matrix and the compactness of the material are obviously enhanced. By uniformly and effectively dispersing the graphene oxide and the inorganic nano material in the latex matrix and utilizing the characteristics of the graphene oxide and the inorganic nano material, such as interface effect, small-size effect, huge specific surface area and the like, the interface interaction between the graphene oxide and the inorganic nano material and the latex matrix is realized, the compactness and mechanical strength of the household glove are remarkably enhanced, the mechanical strength of the household glove and the barrier property to viruses and bacteria are improved, and the glove can be prevented from mildewing in the using process.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments of the present invention, 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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
Firstly, preparing inorganic nano antibacterial compound dispersion liquid.
Weighing the following raw materials: 5 parts of graphene oxide and 5 parts of zinc oxide are uniformly mixed, and 10 parts of a high molecular dispersing agent is added;
firstly, uniformly mixing graphene oxide and zinc oxide, then adding the graphene oxide and a polymer dispersant into a stirrer, uniformly stirring, and infiltrating for 2 hours; and then adding the mixture into a high-shear homogenizer to disperse for 3 hours, so that the inorganic material in the dispersion liquid reaches the nano level and is uniformly dispersed, and obtaining the inorganic nano antibacterial compound dispersion liquid. Wherein the macromolecular dispersant is a coupling agent.
And secondly, preparing a nano antibacterial complex latex solution.
Weighing the following raw materials: 100 parts of natural latex, 5 parts of inorganic nano antibacterial compound dispersion liquid, 0.2 part of casein, 0.15 part of KOH, 1 part of S, 0.8 part of accelerator, 1 part of anti-aging agent, 1.2 parts of activator and a proper amount of soft water. Wherein the soft water is calculated according to the total solid content of the compounded latex, and the total solid content of the compounded latex is 45-55 percent. The accelerator is composed of 40% dithiocarbamate PX; the vulcanizing agent is sulfur; the activator is zinc carbonate, and the anti-aging agent is an anti-aging agent 264.
Dispersing the weighed inorganic nano-antibacterial compound dispersion liquid for 20min by adopting ultrasonic waves, adding the inorganic nano-antibacterial compound dispersion liquid after ultrasonic treatment into 100 parts of natural latex, and uniformly stirring at a low speed to uniformly disperse the inorganic nano-antibacterial compound dispersion liquid in the natural latex; then adding latex auxiliary agent, stirring uniformly, and preparing to obtain the nano antibacterial complex latex solution.
Third, prepare from antibiotic mould proof household gloves
And (4) preparing a coagulant. The coagulant specifically comprises calcium chloride, a wetting agent and soft water, and the preparation method comprises the following steps: dissolving calcium chloride in a certain amount of soft water, and adding 0-1.5% of sodium dibutylnaphthalenesulfonate NF as a wetting agent, wherein the concentration of the calcium chloride is 8-12%.
1. And (3) washing the mold, soaking the mold in hot water (at the temperature of 60-80 ℃), soaking the coagulant, drying the coagulant for one section, drying the coagulant for two sections, and drying the coagulant for three sections to dry the coagulant thoroughly.
2. Dipping the nano antibacterial vulcanized latex for the first time, and shaping in two sections, wherein, after one section of sizing and shaping, leaching (the temperature is 60-70 ℃) is carried out, and then the second section of shaping is carried out;
dipping the nano antibacterial vulcanized latex for the second time, and shaping in two sections, wherein, after one section of sizing and shaping, leaching (the temperature is 60-70 ℃) is carried out, and then the second section of shaping is carried out, and code spraying is carried out.
3. Dipping a coating agent, homogenizing, curling, and then performing a first rubber film drying section, a second rubber film drying section and a third rubber film drying section. Wherein the coating agent is an aqueous polyurethane solution.
4. Soaking in hot water, soaking in isolating agent, drying, demolding, soaking in water, throwing water to eliminate coating agent, and final drying to obtain the antiseptic and mildewproof gloves. Wherein the separant is a calcium chloride solution.
Examples 2 to 3
The difference from the preparation method of example 1 is that: when preparing the nano antibacterial complex latex solution, 10 parts of the inorganic nano antibacterial complex dispersion liquid is added in example 2, and 15 parts of the inorganic nano antibacterial complex dispersion liquid is added in example 3.
Comparative example 1
The difference from the preparation method of example 1 is that: when the nano antibacterial complex latex solution was prepared, the nano antibacterial vulcanized latex was directly added to the household glove production line without adding the inorganic nano antibacterial complex dispersion in comparative example 1. The nano antibacterial vulcanized latex is prepared by adopting natural latex through water vulcanization, cooling, filtering and standing.
The invention carries out the relevant performance detection on the products of the examples 1-3 and the comparative example 1, and the specific steps are as follows:
the products obtained in examples 1 to 3 and comparative example 1 were tested for mechanical strength. The detection result is as follows: compared with comparative example 1, the tensile strength and elongation at break before aging are greatly improved on the premise of ensuring that the tensile strength and elongation at break after aging are stable in the products prepared in examples 1 to 3. The method comprises the following specific steps: comparative example 1 product: the tensile strength before and after aging is 28MPa and 24MPa respectively; elongation at break before and after aging was 789% and 792%, respectively. Examples 1-3 products: the tensile strength before aging is 25.7-31.2 MPa; the elongation at break before aging is 767% -837%; wherein, in example 1, when the addition amount of the inorganic nano antibacterial composite dispersion liquid is 5%, the physical properties of the product are optimal, and especially the tensile strength and the elongation at break of the product before aging can reach 31.2MPa and 837%. The aged tensile strength is 24.8-25.5 MPa; the elongation at break after aging is 739-787%.
The antibacterial performance of the products obtained in examples 1-2 was tested. Three samples are selected from the samples in the embodiment 1-2, the antibacterial performance of the escherichia coli is detected according to the detection standard (GB15979-2002), the total number of the bacterial colonies before and after 1h of oscillation is counted, and the detection result shows that: the difference of the bacteriostasis rates of the tested sample piece and the control sample piece in the example 1 is about 99.8 and is more than 26 percent, which indicates that the product prepared in the example 1 has an antibacterial effect. The bacteriostasis difference values of the tested sample piece and the control sample piece in the example 2 are respectively about 99.9 and are respectively more than 26 percent, which indicates that the product prepared in the example 2 has antibacterial effect.
The products obtained in examples 1-3 were tested for their bacteriostatic properties against E.coli and Staphylococcus aureus, respectively. The results show that: the product has antibacterial effect on Escherichia coli, and has antibacterial activity value of more than 5.3 (satisfying standard value of JIS Z2801:2010 with antibacterial activity value of more than 2.0) and antibacterial rate of more than 99.9%. The product has antibacterial effect on Escherichia coli, and has antibacterial activity value of more than 5.2 (satisfying standard value of JIS Z2801:2010 with antibacterial activity value of more than 2.0) and antibacterial rate of more than 99.9%.
Claims (10)
1. A method for preparing self-antibacterial and anti-mildew household gloves is characterized by comprising the following steps:
step S1, preparing nano antibacterial vulcanized latex by adopting natural latex and inorganic nano antibacterial compound dispersion liquid;
step S2, dipping the coagulant after washing the mold and drying;
and step S3, dipping the nano antibacterial vulcanized latex twice, shaping and drying to prepare the self-antibacterial mildew-proof household glove.
2. The method of claim 1, wherein in step S1, the step of preparing the nano antimicrobial vulcanized latex comprises:
step S11, adding graphene oxide and zinc oxide into a high molecular dispersant for dispersion to prepare an inorganic nano antibacterial compound dispersion liquid;
step S12, placing the inorganic nano antibacterial compound dispersion liquid in an ultrasonic cleaning machine for ultrasonic treatment for 10-30 min, adding the inorganic nano antibacterial compound dispersion liquid after ultrasonic treatment into natural latex, stirring until the inorganic nano antibacterial compound dispersion liquid is uniformly dispersed, and adding a latex auxiliary agent to prepare a nano antibacterial compound latex solution;
and step S13, carrying out water vulcanization on the nano antibacterial matching latex solution, cooling, filtering and standing to prepare the nano antibacterial vulcanized latex.
3. The method according to claim 2, wherein the step S11 includes the steps of:
weighing raw materials, wherein the raw materials comprise the following components in parts by weight: 5-20 parts of graphene oxide, 5-20 parts of zinc oxide and 1-15 parts of a water-based dispersant;
adding the raw materials into a stirrer, uniformly stirring, and soaking for 1-5 hours;
and (3) adding the mixture into a high-shear homogenizer for dispersing for 1-5 hours to obtain the inorganic nano antibacterial compound dispersion liquid.
4. The method according to claim 1, wherein the inorganic nano antimicrobial composite dispersion is added in an amount of 0.1 to 15% based on the natural rubber latex in step S12.
5. The method according to claim 4, wherein the inorganic nano antimicrobial composite dispersion is added in an amount of 0.1 to 5% based on the natural rubber latex in step S12.
6. The method according to claim 1, wherein in step S13, the water vulcanization temperature is 55-80 ℃, and the temperature rise time is 30-60 min.
7. The method according to claim 1, wherein step S3 specifically includes the following steps:
dipping nano antibacterial vulcanized latex for the first time, sizing in two sections, leaching after homogenizing and sizing in one section, and then sizing in the second section;
dipping the nano antibacterial vulcanized latex for the second time, sizing in two sections, leaching after homogenizing and sizing in one section, and then sizing in the second section;
dipping a coating agent, homogenizing and curling, and then performing glue film drying for the first section, glue film drying for the second section and glue film drying for the third section;
dipping hot water, dipping a separant, drying, demolding, soaking and washing with water, throwing water and removing a coating agent, and drying to obtain the self-antibacterial and anti-mildew household glove.
8. A self-antiseptic, mold-resistant household glove, comprising: raw materials and soft water, the raw materials include, by weight: 100 parts of natural latex, 0.1-15 parts of inorganic nano antibacterial compound dispersion liquid and 2.7-6 parts of latex auxiliary agent; the latex auxiliary agent comprises one or more of a stabilizer, a vulcanizing agent, an accelerator, an anti-aging agent and an active agent.
9. The household glove of claim 8, wherein the latex auxiliary agent comprises, in parts by weight: 0.2-0.5 part of stabilizer, 0.5-1.5 parts of vulcanizing agent, 0.5-1.0 part of accelerator, 0.5-1.4 parts of anti-aging agent and 1.0-1.5 parts of activator.
10. The household glove according to claim 8, wherein the self-antibacterial and mildew-resistant household glove is manufactured by the manufacturing method according to any one of claims 1 to 7.
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2020
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| CN109957155A (en) * | 2019-03-20 | 2019-07-02 | 中红普林（北京）医疗用品高新技术研究院有限公司 | A kind of preparation method of the modified polyisoprene surgical operation gloves of graphene oxide |
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