CN112375266A - Self-antibacterial condom and preparation method thereof - Google Patents
Self-antibacterial condom and preparation method thereof Download PDFInfo
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- CN112375266A CN112375266A CN202011280528.0A CN202011280528A CN112375266A CN 112375266 A CN112375266 A CN 112375266A CN 202011280528 A CN202011280528 A CN 202011280528A CN 112375266 A CN112375266 A CN 112375266A
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- latex
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- condom
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
- C08L7/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a self-antibacterial condom and a preparation method thereof. The preparation method comprises the following steps: adding graphene oxide and zinc oxide into a high-molecular dispersing agent to prepare an inorganic nano antibacterial compound dispersion liquid; carrying out ultrasonic cleaning on the inorganic nano antibacterial compound dispersion liquid, adding the inorganic nano antibacterial compound dispersion liquid into natural latex after cleaning, stirring and dispersing the inorganic nano antibacterial compound dispersion liquid, and adding a latex auxiliary agent to prepare nano antibacterial compound latex solution; carrying out water vulcanization on the nano antibacterial matching latex solution, and cooling, filtering and standing to prepare nano antibacterial vulcanized latex; and adding the nano antibacterial vulcanized latex and the vulcanized natural latex into a condom production line to prepare the self-antibacterial condom. The self-antibacterial condom prepared by the invention has antibacterial performance, has a compact structure and higher mechanical strength, can effectively block the penetration of viruses and bacteria, is not easy to damage, and can realize real complete protection.
Description
Technical Field
The invention relates to the technical field of latex materials, in particular to a self-antibacterial condom and a preparation method thereof.
Background
Natural rubber is favored by people because of its better comprehensive properties such as wear resistance, cold resistance, weather resistance and high elasticity than synthetic rubber. The natural rubber is a natural product, the continuous phase of the dispersion medium of the natural latex cut from the rubber tree is whey which can be dissolved in water, a large amount of inorganic salt, carbohydrate, protein, fatty acid and other non-rubber components are arranged in the natural rubber, and the nutrient components can provide natural nutrients for the growth and the propagation of bacteria, mold and other microorganisms. The propagation of microorganisms directly causes the performance reduction of natural rubber, so when the natural rubber is used as a raw material in the fields of medical and sanitary products and daily necessities, the natural rubber is required to meet the performances of not only the service performance, but also the performances of antibiosis, bacteriostasis, environmental protection, sanitation and the like.
Natural latex condoms have pores of several hundred to several thousand nanometers through which some sexually transmitted diseases may pass. Ag+Although the antibacterial material has the characteristics of good antibacterial effect, high sterilization efficiency, difficult generation of drug resistance, strong heat resistance and the like, antibacterial ions are dissolved out of inorganic matters, so that the antibacterial effect is weakened, and the service life of the antibacterial material is shortened. Therefore, in all countries of the worldResearchers aim more at nano materials with strong sterilization capability, lasting efficacy, no drug resistance and high safety.
At present, relevant research at home and abroad is in the initial stage, although some academic research appears, for example, a silver inorganic antibacterial agent taking zirconium phosphate as a carrier is doped into a medical catheter material for slow release antibacterial; tributyl phosphate modified composite zinc oxide/silver nano material is used as an antibacterial agent and added into natural rubber to prepare an antibacterial composite material; the organic clay/natural latex composite material synthesized by compounding the organic clay and the natural latex has certain inhibition on positive gram bacteria and negative gram bacteria; preparing an antibacterial medical catheter and the like by adopting a dip-coating method; however, in these researches, either a silver material which has an effect of damaging internal organs of a human body is added as an antibacterial agent, or antibiotics or organic matters with antibacterial performance are added to play a role of sterilization and bacteriostasis in a slow release manner, so that the defects of inapplicability to the human body or aging limitation exist, and the condom is a product which is in close contact with the human body, and the prior art cannot meet the use requirements of the condom.
Disclosure of Invention
Based on the above problems, the present invention aims to provide a self-antibacterial condom with high mechanical strength, high barrier property and self-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 of making a self-antiseptic condom, the method comprising:
step S1, adding graphene oxide and zinc oxide into a high molecular dispersant for dispersion to prepare an inorganic nano antibacterial compound dispersion liquid;
step S2, 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 uniformly for dispersion, and adding a latex auxiliary agent to prepare a nano antibacterial compound latex solution;
step S3, carrying out water vulcanization on the nano antibacterial matching latex solution, cooling, filtering and standing to prepare nano antibacterial vulcanized latex;
and step S4, preparing the self-antibacterial condom by adopting the nano-antibacterial vulcanized latex and the vulcanized natural latex.
In the invention, the latex auxiliary agent comprises auxiliary agents such as a tackifier, KOH, an anti-aging agent, a vulcanizing agent, an accelerator, an activator and the like. Wherein, the tackifier can be casein. The vulcanizing agent may be sulfur. The accelerator is selected from a single accelerator, and can be dithiocarbamate accelerator PX. The active agent may be zinc carbonate. The vulcanizing agent, the accelerator and the activator form a vulcanizing system.
Preferably, step S1 includes: weighing the following components in parts by weight: 5-20 parts of graphene oxide, 5-20 parts of zinc oxide, 1-15 parts of a water-based dispersant and 50-100 parts of deionized water; adding the component materials into a stirrer, uniformly stirring, and soaking for 1-5 hours; and then adding the mixture into a high-shear homogenizer to strongly disperse for 1-5 hours to obtain the inorganic nano antibacterial compound dispersion liquid with nano grade and uniform dispersion. Wherein the aqueous dispersant is a coupling agent.
Preferably, in step S2, the inorganic nano-antibacterial compound dispersion is added in an amount of 0.1% to 15% based on the natural rubber latex; for example, it may be 0.2%, 0.5%, 1%, 1.5%, 3%, 5%, 8%, 10%, etc., more preferably 0.5% to 8%; more preferably 0.1% to 5%.
Preferably, step S3 includes:
step S31, placing the nano antibacterial matching latex solution into a water bath kettle for water vulcanization, wherein the water vulcanization temperature is 55-80 ℃, and the temperature rise time is 30-60 min;
and step S32, when the chloroform value of the latex reaches two to three ends, cooling, filtering and standing to prepare the nano antibacterial vulcanized latex.
Further, the water vulcanization temperature in the step S31 is 60-70 ℃; the parking time in step S32 may be 2-3 days.
Preferably, in step S4, the self-antibacterial condom is prepared by three dipping processes, and then demolding, wherein the three dipping processes comprise: dipping into the nano antibacterial vulcanized latex for the first time, shaping and drying; dipping into the vulcanized natural latex for the second time, and drying; dipping into the nanometer antibacterial vulcanized latex for three times, and drying.
Preferably, in step S4, the vulcanized natural rubber latex is obtained by adding the latex auxiliary agent into natural rubber latex, then placing the natural rubber latex in a water bath for water vulcanization, and then cooling, filtering and standing the natural rubber latex. Wherein the water vulcanization conditions of the vulcanized natural rubber latex are as follows: the water vulcanization temperature is 60-70 ℃, and the temperature rise time is 30-60 min.
According to another aspect of the invention, the invention provides a self-antibacterial condom, which comprises raw materials and soft water, wherein the raw materials comprise, by weight:
preferably, the raw materials comprise the following components in parts by weight:
further, the self-antibacterial condom is prepared by adopting the preparation method.
Compared with the prior art, the invention adopts inorganic nano antibacterial compound dispersion liquid to modify natural latex to obtain nano antibacterial compound latex solution, carries out water vulcanization to obtain nano antibacterial vulcanized latex, then adds the nano antibacterial vulcanized latex and the vulcanized natural latex into a production line according to a condom production process, and adopts a three-time dipping mode to obtain the self-antibacterial condom. Wherein the content of the first and second substances,
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 invention applies the inorganic nano antibacterial compound dispersion liquid to latex to prepare the self-antibacterial condom, so that the self-antibacterial condom has the advantages of strong antibacterial capacity, good durability, wide antibacterial spectrum, no drug resistance, no toxicity to the environment and the like.
The invention applies the inorganic nano antibacterial compound dispersion liquid in the latex, and obviously enhances the strength of the latex matrix and the compactness of the material. 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 graphene oxide, the inorganic nano material and the latex matrix are subjected to interface interaction, so that the compactness and the mechanical strength of the condom are remarkably enhanced, and the mechanical strength and the virus and bacteria blocking performance of the condom are improved.
Drawings
FIG. 1 is a schematic process flow diagram of a method of making a self-antiseptic condom according to the invention;
FIG. 2 is a bar graph of tensile strength before and after aging of products prepared in comparative example 1, example 2, and example 3;
FIG. 3 is a bar graph showing the elongation at break before and after aging of the products prepared in comparative example 1, example 2 and example 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
Fig. 1 schematically illustrates a process flow for the method of making a self-antiseptic condom according to the invention. An embodiment of the present invention is described in detail below with reference to fig. 1.
Example 1
Step 1, preparing inorganic nano antibacterial compound dispersion liquid.
Uniformly mixing 5 parts of graphene oxide and 5 parts of zinc oxide, and adding 10 parts of high molecular dispersant for dispersion to obtain a dispersion solution; adding the dispersion solution into special equipment, and adopting a special nano preparation and dispersion technology to enable the inorganic material in the dispersion solution to reach a nano level and be uniformly dispersed, thereby obtaining the inorganic nano antibacterial compound dispersion solution. Wherein the macromolecular dispersant is a coupling agent.
The specific processing process comprises the following steps: weighing the materials; adding the weighed materials into a stirrer, uniformly stirring, and soaking for 2 hours; and then adding the mixture into a high-shear homogenizer to strongly disperse for 3 hours to obtain the inorganic nano antibacterial compound dispersion liquid with nano grade and uniform dispersion.
And 2, preparing the 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 active agent is zinc carbonate.
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.
And 3, preparing the nano antibacterial vulcanized latex.
And (3) putting the nano antibacterial matching latex solution into a water bath kettle for water vulcanization, wherein the vulcanization temperature is 65 ℃, the heating time is 40min, cooling is started when the chloroform value of the latex reaches two to three ends, then filtering is carried out, and the latex is parked for 2 days to prepare the nano antibacterial vulcanized latex.
And 4, preparing the self-antibacterial condom.
The self-antibacterial condom is obtained by adding nano-antibacterial vulcanized latex and vulcanized natural latex into a condom production line according to a condom production process flow, and carrying out production sizing, drying and detection.
Specifically, the method comprises the following steps: cleaning the mould and drying; dipping into nanometer antibacterial vulcanized latex for the first time, shaping and drying; dipping into vulcanized natural latex for the second time, and drying; dipping the mixture into nano antibacterial vulcanized latex for three times, and drying the mixture at the temperature of 100-120 ℃; curling, drying, demoulding with powder water, centrifugally dewatering, drying, airing, screening and removing defective products.
Through contrast detection, the condom with antibacterial property can be prepared by adopting the mode of dipping the nano antibacterial vulcanized latex for the first time and the third time and dipping the vulcanized natural latex for the second time, and the mechanical strength and the barrier property of the condom are higher, so that the production cost is further reduced.
Comparative example 1
This comparative example 1 differs from example 1 in that: the method is characterized in that inorganic nano antibacterial compound dispersion liquid is not added, vulcanized natural rubber latex is directly added into a condom production line according to the condom production process flow, the vulcanized natural rubber latex is dipped and dried for three times, and then the vulcanized natural rubber latex is curled, dried, subjected to powder water demoulding, centrifugally dewatered, dried, and screened to remove defective products.
Example 2
This example 2 differs from example 1 in that: and 2, when preparing the nano antibacterial complex latex solution, weighing 10 parts of the inorganic nano antibacterial complex dispersion solution, cleaning, and adding the cleaned inorganic nano antibacterial complex dispersion solution into 100 parts of natural latex.
Example 3
This example 3 differs from example 1 in that: and 2, when preparing the nano antibacterial complex latex solution, weighing 15 parts of the inorganic nano antibacterial complex dispersion solution, cleaning, and adding the cleaned inorganic nano antibacterial complex dispersion solution into 100 parts of natural latex.
And 5, carrying out mechanical strength detection, microorganism detection, sterilization and bacteriostasis performance and stability detection and toxicology detection on the product.
And (3) detecting mechanical strength:
FIGS. 2 and 3 are bar graphs showing tensile strength and elongation at break before and after aging of the products prepared in comparative example 1 and examples 1 to 3, respectively. Fig. 2 and 3 show that: the products prepared in examples 1 to 3 have high mechanical strength; wherein, when the addition amount of the inorganic nano antibacterial compound dispersion liquid in the embodiment 1 is 5 percent, the physical properties of the product are optimal, and particularly, the tensile strength and the elongation at break of the product before aging can reach 31.19MPa and 837 percent.
And (3) detecting microorganisms:
the products prepared in the embodiments 1-3 of the invention are subjected to microorganism detection, and the detection results show that the total number of bacterial colonies, the total number of fungal colonies, coliform bacteria, staphylococcus aureus, hemolytic streptococcus and pseudomonas aeruginosa in the products prepared in the embodiments 1-3 all meet the standard (GB15979-2002 hygienic standard for disposable sanitary products). Wherein, the results of the microorganism detection of the self-antibacterial condom of example 1 are shown in the following table 1:
table 1 example 1 results of microbiological testing of self-antiseptic condoms
And (3) detecting the sterilization and bacteriostasis performance and stability:
in the invention, three samples are selected from the samples in the embodiments 1 and 2 to respectively detect the antibacterial (bacteriostatic) performance of escherichia coli, and the detection result shows that according to the detection standard (GB 15979-2002): the bacteriostasis difference values of the tested sample plate and the control sample plate in example 1 are respectively 99.86%, 99.86% and 97.05%, and are respectively more than 26%, which indicates that the product prepared in example 1 has antibacterial effect. The bacteriostasis difference values of the tested sample plate and the control sample plate in the example 2 are respectively 99.92%, 99.91% and 97.14%, and are respectively more than 26%, which indicates that the product prepared in the example 2 has antibacterial effect.
And (3) toxicology detection:
the tests were carried out using the self-antibacterial condoms prepared in examples 1-3, respectively.
1. The vaginal mucosa stimulation test is carried out on 6 female New Zealand rabbits, and the test result shows that: the stimulation index of the self-antibacterial condom is 0.1, and the stimulation reaction intensity of the vaginal mucosa is judged to be free of irritation reaction.
2. The skin allergy of guinea pigs was tested, and 16 subjects were tested for allergy in each of the negative control group, the test group, and the positive control group. The test result shows that: 24 hours and 48 hours after the excitation application is removed, no erythema or edema is seen on the excitation part of the animals of the negative control group and the test group, and the sensitization rate is 0 percent; the animals in the positive control group have erythema and edema with different degrees, the sensitization rate is 68.75 percent, and the negative control group and the test group are judged not to have skin allergy; the sensitization intensity of the positive control group is strength sensitization.
In conclusion, the self-antibacterial condom prepared by the invention has high mechanical strength and high barrier property, and has self-antibacterial property.
Claims (10)
1. A method of making a self-antiseptic condom, comprising:
step S1, adding graphene oxide and zinc oxide into a high molecular dispersant for dispersion to prepare an inorganic nano antibacterial compound dispersion liquid;
step S2, 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;
step S3, carrying out water vulcanization on the nano antibacterial matching latex solution, cooling, filtering and standing to prepare nano antibacterial vulcanized latex;
and step S4, preparing the self-antibacterial condom by adopting the nano-antibacterial vulcanized latex and the vulcanized natural latex.
2. The method according to claim 1, wherein step S1 includes: weighing the following components in parts by weight: 5-20 parts of graphene oxide, 5-20 parts of zinc oxide, 1-15 parts of a water-based dispersant and 50-100 parts of deionized water; adding the weighed materials into a stirrer, uniformly stirring, and soaking for 1-5 hours; and then adding the mixture into a high-shear homogenizer to disperse for 1-5 hours to obtain the inorganic nano antibacterial compound dispersion liquid.
3. 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 S2.
4. The method according to claim 3, 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 S2.
5. The method according to claim 1, wherein step S3 includes:
putting the nano antibacterial complex latex solution into a water bath kettle for water vulcanization, wherein the water vulcanization temperature is 55-80 ℃, and the temperature rise time is 30-60 min;
and when the chloroform value of the latex reaches two to three ends, cooling, filtering and standing to prepare the nano antibacterial vulcanized latex.
6. The preparation method according to claim 1, wherein the latex auxiliary agent comprises a tackifier, KOH, an anti-aging agent, a vulcanizing agent, an accelerator and an activator, wherein the vulcanizing agent is sulfur; the accelerator is dithiocarbamate accelerator PX; the active agent is zinc carbonate.
7. The method of claim 1, wherein the self-antibacterial condom is prepared by three dipping processes and then demoulding in step S4, wherein the three dipping processes comprise: dipping into the nano antibacterial vulcanized latex for the first time, shaping and drying; dipping into the vulcanized natural latex for the second time, and drying; dipping into the nanometer antibacterial vulcanized latex for three times, and drying.
8. The method according to claim 1, wherein in step S4, the vulcanized natural rubber latex is obtained by adding the latex auxiliary agent to natural rubber latex, placing the natural rubber latex in a water bath for water vulcanization, cooling, filtering, and standing.
9. The self-antibacterial condom is characterized by comprising raw materials and soft water, wherein the raw materials comprise the following components in parts by weight:
10. a self-antibacterial condom according to claim 9, characterised in that it is produced by a process according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011280528.0A CN112375266A (en) | 2020-11-16 | 2020-11-16 | Self-antibacterial condom and preparation method thereof |
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| CN202011280528.0A CN112375266A (en) | 2020-11-16 | 2020-11-16 | Self-antibacterial condom and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116769237A (en) * | 2023-08-22 | 2023-09-19 | 广州双一乳胶制品有限公司 | Condom and preparation method thereof |
| CN116836418A (en) * | 2023-08-31 | 2023-10-03 | 广州双一乳胶制品有限公司 | Anti-aging condom and preparation method thereof |
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| CN106750614A (en) * | 2016-12-27 | 2017-05-31 | 湖南云阳乳胶科技实业有限公司 | The manufacture method and the sheath containing nano zine oxide of a kind of sheath containing nano zine oxide |
| CN108219221A (en) * | 2017-12-23 | 2018-06-29 | 广州双乳胶制品有限公司 | A kind of high isolation, the sheath and preparation method thereof of high heat conduction |
| CN110078984A (en) * | 2019-06-01 | 2019-08-02 | 任国峰 | A kind of latex containing graphene zinc oxide composites |
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| CN105237829A (en) * | 2015-11-23 | 2016-01-13 | 辽宁兰晶科技有限公司 | Preparing method for high-strength high-isolation condom comprising modified graphene/latex interlayer |
| CN106750614A (en) * | 2016-12-27 | 2017-05-31 | 湖南云阳乳胶科技实业有限公司 | The manufacture method and the sheath containing nano zine oxide of a kind of sheath containing nano zine oxide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116769237A (en) * | 2023-08-22 | 2023-09-19 | 广州双一乳胶制品有限公司 | Condom and preparation method thereof |
| CN116769237B (en) * | 2023-08-22 | 2023-11-28 | 广州双一乳胶制品有限公司 | Condom and preparation method thereof |
| CN116836418A (en) * | 2023-08-31 | 2023-10-03 | 广州双一乳胶制品有限公司 | Anti-aging condom and preparation method thereof |
| CN116836418B (en) * | 2023-08-31 | 2023-11-28 | 广州双一乳胶制品有限公司 | Anti-aging condom and preparation method thereof |
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