A long-acting broad-spectrum antibacterial and antiviral composition and preparation method thereof

Abstract

The present invention provides a long-acting broad-spectrum antibacterial and antiviral composition, wherein the raw materials include 1-6% of nanomaterials, 0.1-1% of alkylbenzene sulfonate, 1-2% of antiviral ingredients, 0-2% of surfactants, and the remainder of alkane oils according to weight percentage. The present invention provides a long-acting broad-spectrum antibacterial and antiviral composition and a preparation method thereof. The present invention significantly improves the softness of textiles through the combined action of suitable proportions of alkylbenzene sulfonate and surfactants. The present invention adds tea extract to the composition, which enables the textiles to have certain antiviral capabilities while having antibacterial properties. The long-acting broad-spectrum antibacterial and antiviral composition of the present invention can be applied to textiles, and the obtained fabrics have high-efficiency antibacterial properties, softness and wear resistance, which is of great significance for improving people's health and quality of life. The preparation method of the present invention is simple and convenient, has strong repeatability, and is conducive to large-scale production.

Description

Technical Field

[0001] The invention belongs to the field of textiles, and in particular relates to a long-acting broad-spectrum antibacterial and antiviral composition and a preparation method thereof. Background Art

[0002] Textiles are widely used in various fields of people's lives. While textiles provide convenience for people's lives, various bacteria and viruses can also be spread through textiles, which can cause harm to the human body. Therefore, in order to create a good home and work environment, textiles with antibacterial and antiviral functions are increasingly favored by the market. At present, graphene is used in textile materials on the market. Patent CN201811602932.8 provides a method for preparing antibacterial fabrics based on graphene, but the antibacterial properties of the fabrics prepared by this method are not ideal. Since textiles will contact human skin, the softness and wear resistance of textile fabrics affect the user experience.

[0003] Therefore, developing a long-acting broad-spectrum antibacterial and antiviral composition that can be applied to textiles has important practical value and significance. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a long-acting broad-spectrum antibacterial and antiviral composition. The raw materials thereof include 1-6% nanomaterial, 0.1-1% alkylbenzene sulfonate, 1-2% antiviral component, 0-2% surfactant, and the balance made up of alkane oil, by weight percentage.

[0005] Preferably, the surfactant is a cationic surfactant.

[0006] Preferably, the cationic surfactant is selected from at least one of amine salt compounds, quaternary ammonium salt compounds and heterocyclic compounds.

[0007] Further preferably, the quaternary ammonium salt compound is at least one selected from dodecyl dimethyl betaine, octadecyl dimethyl benzyl ammonium chloride, octadecyl trimethyl ammonium bromide, hexadecyl trimethyl ammonium bromide, and dodecyl trimethyl ammonium chloride.

[0008] Further preferably, the quaternary ammonium salt compound is dodecyl dimethyl betaine.

[0009] Preferably, the HLB value of the alkylbenzene sulfonate is 9-12. The HLB value is the hydrophilic-lipophilic balance value of the surfactant.

[0010] Further preferably, the weight ratio of the alkylbenzene sulfonate to the surfactant is (0.5-2):1.

[0011] With the improvement of quality of life, fabrics no longer stop at shielding and heat preservation, and functional materials developed based on textiles have gradually attracted attention. Textile fabrics are composed of fibers, and their porous structure and high molecular polymer characteristics make them a hotbed for microbial attachment, and they are easily carriers for the growth and reproduction of microorganisms such as bacteria and fungi. Textiles with antibacterial properties can eliminate the adverse effects of microorganisms and eliminate their harm to human health. The present invention has found through practical exploration that adding quaternary ammonium compounds to antibacterial and antiviral compositions can improve the antibacterial properties of fabrics. The reason is that the cations in the quaternary ammonium compounds can be combined with the bacterial body through chemical bonds, gather on the bacterial surface to produce a chamber resistance effect, hinder the cell membrane substance transfer process, destroy the cell growth metabolic balance, and achieve bactericidal and antibacterial effects.

[0012] Although quaternary ammonium compounds can enhance the antibacterial effect of textiles, their chemical properties determine that quaternary ammonium compounds are prone to antagonism with anionic surfactants, and the active ingredients lose their effectiveness, making the impregnated textiles rough and stiff. The present invention finds that when the quaternary ammonium compound is further selected as dodecyl dimethylamino ethyl lactone, the surfactant and dodecyl dimethylamino ethyl lactone act in combination, reducing the friction resistance of the relative motion of the yarn, reducing the bending rigidity of the textile, and improving the softness of the fabric. The antibacterial and antiviral composition enhances the antibacterial effect of the textile while enhancing the softness of the textile.

[0013] Preferably, the nanomaterial includes graphene and basic zinc carbonate.

[0014] Further preferably, the weight ratio of graphene to basic zinc carbonate is (1-4.6):1.

[0015] Research has found that the unique surface effects, quantum effects, and size effects of nanomaterials enable them to be combined with textiles to enhance the functional needs of textiles. Graphene is a good choice for the application of nanomaterials in textile finishing due to its unique two-dimensional conjugated structure. However, as an inorganic material, how to combine graphene with organic macromolecules that constitute the fiber is a technical challenge to achieve the functionalization of textiles. The present invention has found through experimental research that when the nanomaterial is selected to be compounded with basic zinc carbonate and graphene, the compatibility of graphene and textiles can be improved, and the antibacterial properties of textiles are improved after graphene post-treatment. It was further discovered that when graphene and basic zinc carbonate were compounded at 200-230°C, the antibacterial and antiviral composition obtained could enable the textiles to maintain their antibacterial effect after multiple washings. It is speculated that under this condition, inorganic metal carbonates can be further decomposed into metal oxides with antibacterial activity. When the active metal oxides are directly mixed with graphene, the binding ability of the two is poor. The use of alkaline metal oxides, specifically basic carbonates, can be evenly filled in the graphene interlayer structure, further inhibiting the aggregation of graphene in textile fibers. Textiles loaded with graphene can destroy the cell structure after contacting microorganisms in the air, causing microbial metabolic disorders and then death, thereby achieving an antibacterial effect.

[0016] The use of alkylbenzene sulfonate and surfactant to work together significantly improves the softness of textiles, but it is easy to cause the defects of loose fiber tissue of the fabric and easy denaturation after multiple washings. The present invention unexpectedly found that when the weight ratio of graphene and basic zinc carbonate is (1-4.6): 1, the ability of textiles to resist denaturation can be effectively improved. It may be that under this condition, inorganic metal oxides, alkylbenzene sulfonate and surfactant are jointly filled and intercalated in the graphene structure, so that they are evenly dispersed and filled in the fiber structure, and the shear hysteresis inside the fabric is suppressed, so that the textile maintains softness while maintaining appropriate fiber-to-fiber interaction. After infiltration, the ability of the fabric to resist deformation is improved, and good softness is maintained while having good mechanical elasticity.

[0017] More preferably, the alkylbenzene sulfonate is at least one selected from sodium dodecylbenzene sulfonate, potassium dodecylbenzene sulfonate, sodium tridecylbenzene sulfonate, and sodium 4-tetradecylbenzene sulfonate.

[0018] More preferably, the alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0019] Preferably, the alkane oil is mineral oil.

[0020] Further preferably, the alkane oil is white oil.

[0021] Further preferably, the white oil is selected from at least one of No. 3 white oil, No. 5 white oil, No. 7 white oil and No. 10 white oil.

[0022] Preferably, the weight ratio of the nanomaterial to the alkylbenzene sulfonate is (7-15):1.

[0023] Further preferably, the kinematic viscosity of the mineral oil is 4-28 mm 2 / s, the test temperature is 40℃.

[0024] Graphene can impart good antibacterial and mechanical properties to textiles, but the high surface activity of graphene makes it very easy to agglomerate, making it impossible to store the antibacterial and antiviral composition stably for a long time. The present invention has found through a large number of experimental studies that when the solvent is mineral oil, specifically a mineral oil with a kinematic viscosity of 4-28 mm 2 / s of mineral oil can greatly improve the compatibility of organic and inorganic components in the composition. Metal oxides and organic straight-chain compounds form effective steric hindrance in the graphite layer structure, giving the composition a suitable flow resistance, inhibiting the agglomeration and sedimentation of nanomaterials in the system, thereby improving the stability of the antibacterial and antiviral composition. It was further found that when the weight ratio of nanomaterials to alkylbenzene sulfonates is (7-15):1, the antibacterial and antiviral effects of the antibacterial and antiviral composition are improved. It is speculated that the rich saturated alkanes and cycloalkanes in mineral oil promote the interaction between inorganic nanomaterials and organic dispersed components, allowing the sterilization components to fully penetrate and load inside the textiles, effectively adsorb harmful components such as bacteria, fungi, and viruses in the air, interfere with their normal physiological metabolic activities, and preserve the antibacterial and antiviral effects for a long time.

[0025] Preferably, the antiviral component includes at least one of pyrithione zinc, tea extract, phthalic blue derivatives, silver-doped oxides, and chitosan.

[0026] Preferably, the antiviral ingredient is tea extract.

[0027] Preferably, the tea extract is selected from at least one of black tea extract, green tea extract, white tea extract and dark tea extract.

[0028] The antibacterial ability of existing textiles has been explored more, but the antiviral ability is often ignored. The present invention finds that adding tea extract to the composition can make the textiles have certain antiviral ability while having antibacterial properties. The reason may be that tea polyphenols, theaflavins and other ingredients in the tea extract can inhibit the fusion of viruses and target cells, and the synthesis path of the essential substances for the life activities of bacteria and viruses is blocked, thereby terminating the growth, activity and reproduction process of microorganisms, and achieving the effect of broad-spectrum protection of human health. The present invention further finds that when the tea extract is specifically at least one of black tea extract, green tea extract, and white tea extract, it can give the textiles long-lasting antibacterial and antiviral ability. It may be that the specific tea extract is rich in active ingredients, which can improve the binding ability of components such as graphene with textile fibers. The fibers inside the textiles are wrapped with active groups, which are denatured and inactivated after contacting pathogens, and can maintain stable antibacterial and antiviral effects even after multiple washings. At the same time, the binding force between the nanomaterials and the textiles in the composition is enhanced, and the mechanical properties of the textiles after infiltration are permanently optimized, which can maintain better softness and dimensional stability, and meet the needs of textiles for different occasions.

[0029] The second aspect of the present invention provides a method for preparing the long-acting broad-spectrum antibacterial and antiviral composition, which comprises mixing graphene and basic zinc carbonate at a temperature above 200° C., and then mixing with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0030] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0031] (1) The present invention provides a long-acting broad-spectrum antibacterial and antiviral composition and a preparation method thereof. The long-acting broad-spectrum antibacterial and antiviral composition of the present invention can be applied to textiles, and the obtained fabrics have high antibacterial properties, softness and wear resistance, which is of great significance for improving people's health and quality of life. The preparation method of the present invention is simple and convenient, has strong repeatability, and is conducive to large-scale production.

[0032] (2) The present invention finds that when the nanomaterial is selected to be zinc carbonate basic and compounded with graphene, the compatibility of graphene and textiles can be improved, and the antibacterial property of the textiles is improved after the graphene post-treatment. The present invention adds tea extract to the composition, which can make the textiles have certain antiviral ability while having antibacterial property. When the tea extract is specifically at least one of black tea extract, green tea extract, and white tea extract, the textiles can be endowed with long-lasting antibacterial and antiviral ability. The present invention significantly improves the softness of textiles through the combined action of appropriate ratios of alkylbenzene sulfonate and surfactant. DETAILED DESCRIPTION

[0033] The content of the present invention can be further understood by combining the following detailed description of the preferred implementation method of the present invention and the embodiments included. Unless otherwise stated, all technical and scientific terms used in this article have the same meaning as those of ordinary skill in the art to which the application belongs. If the definition of a specific term disclosed in the prior art is inconsistent with any definition provided in the application, the term definition provided in the application shall prevail.

[0034] The raw materials in the present invention are purchased from the following manufacturers:

[0035] Graphene: Aladdin

[0036] Sodium dodecylbenzenesulfonate: Nanjing Milan Chemical Co., Ltd.

[0037] Dodecyl dimethyl betaine: Shengxuan Biochemical

[0038] Black tea extract: Fujian Xianyangyang Biotechnology Co., Ltd.

[0039] Green tea extract; Fujian Xianyangyang Biotechnology Co., Ltd.

[0040] White tea extract: Fujian Xianyangyang Biotechnology Co., Ltd.

[0041] No. 3 white oil: Haorui Petrochemical

[0042] No. 5 white oil: Haorui Petrochemical

[0043] Example 1

[0044] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0045] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0046] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0047] The surfactant is dodecyl dimethyl betaine.

[0048] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0049] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0050] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0051] Example 2

[0052] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 6% nanomaterials, 1% alkylbenzene sulfonate, 2% antiviral ingredients, 2% surfactants, and the balance is supplemented by alkane oil, according to weight percentage.

[0053] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0054] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0055] The surfactant is dodecyl dimethyl betaine.

[0056] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 5 white oil.

[0057] The antiviral component is tea extract, and the tea extract is black tea extract.

[0058] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0059] Example 3

[0060] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0061] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 1:1.

[0062] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0063] The surfactant is dodecyl dimethyl betaine.

[0064] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0065] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0066] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0067] Example 4

[0068] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0069] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0070] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0071] The surfactant is dodecyl dimethyl betaine.

[0072] The alkane oil is white oil. The kinematic viscosity of the white oil is 5 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0073] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0074] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0075] Comparative Example 1

[0076] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0077] The nano material includes graphene and basic zinc carbonate, and the weight ratio of the graphene to the basic zinc carbonate is 8:1.

[0078] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0079] The surfactant is dodecyl dimethyl betaine.

[0080] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0081] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0082] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0083] Comparative Example 2

[0084] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is made up of alkane oil, in terms of weight percentage.

[0085] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0086] The HLB value of the alkylbenzene sulfonate is 20. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0087] The surfactant is dodecyl dimethyl betaine.

[0088] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0089] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0090] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0091] Comparative Example 3

[0092] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 4% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0093] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0094] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0095] The surfactant is dodecyl dimethyl betaine.

[0096] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0097] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0098] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0099] Comparative Example 4

[0100] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is made up of alkane oil, in terms of weight percentage.

[0101] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0102] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0103] The surfactant is dodecyl dimethyl betaine.

[0104] The alkane oil is white oil. The kinematic viscosity of the white oil is 35 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0105] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0106] Preparation method: Graphene and basic zinc carbonate are mixed at 250° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0107] Example 5

[0108] This embodiment provides a long-acting broad-spectrum antibacterial and antiviral composition, whose raw materials include 5% nanomaterials, 0.5% alkylbenzene sulfonate, 1.5% antiviral ingredients, 1% surfactant, and the balance is supplemented by alkane oil, according to weight percentage.

[0109] The nano material comprises graphene and basic zinc carbonate, wherein the weight ratio of the graphene to the basic zinc carbonate is 3:1.

[0110] The HLB value of the alkylbenzene sulfonate is 10. The alkylbenzene sulfonate is sodium dodecylbenzene sulfonate.

[0111] The surfactant is dodecyl dimethyl betaine.

[0112] The alkane oil is white oil. The kinematic viscosity of the white oil is 10 mm 2 / s, and the test temperature is 40° C. The white oil is No. 3 white oil.

[0113] The antiviral component is tea extract, which includes black tea extract, green tea extract and white tea extract, with a mass ratio of 1:1:1.

[0114] Preparation method: Graphene and basic zinc carbonate are mixed at 150° C., and then mixed with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain a long-acting broad-spectrum antibacterial and antiviral composition.

[0115] Performance Testing

[0116] The long-acting broad-spectrum antibacterial and antiviral compositions prepared in Examples 1 to 4 and Comparative Examples 1 to 5 were subjected to performance tests. The specific steps are: immerse the cotton thread in the long-acting broad-spectrum antibacterial and antiviral composition according to a bath ratio of 1:20, keep the temperature at 65°C, and control the immersion time to 125min. The impregnated cotton thread is dehydrated, dried, and baked at a baking temperature of 145°C for 60s. Cotton thread with antibacterial and antiviral properties is obtained. Plain cotton cloth is woven with antibacterial and antiviral cotton thread as warp and weft, with specifications of 420 warp threads / 10cm and 280 weft threads / 10cm.

[0117] 1. Antibacterial property: According to GB / T20944.3-2008, the antibacterial rate against Staphylococcus aureus, Escherichia coli and Candida albicans was determined. The results are shown in Table 1.

[0118] Table 1 Antibacterial test results

[0119]

[0120]

[0121] 2. Softness: The softness grades of the cotton fabrics of the examples and comparative examples were measured according to the method for measuring softness in the existing document "Characterization and Evaluation of Fabric Softness" (Wang Ya). The results are shown in Table 2.

[0122] Table 2 Softness grades

[0123] project grade Example 1 Level 2 Example 2 Level 2 Example 3 Level 2 Example 4 Level 2 Comparative Example 1 Level 3 Comparative Example 2 Level 3 Comparative Example 3 Level 3 Comparative Example 4 Level 3 Comparative Example 5 Level 3

[0124] 3. Stability: The antibacterial composition was poured into a centrifuge tube and placed in a transparent water bath for 120 days, and the time when obvious precipitation began to appear in the centrifuge tube was recorded. Examples 1 to 4 of the present invention did not precipitate at all, while the comparative examples precipitated at different times. The results are shown in Table 3.

[0125] Table 3 Stability test results

[0126]

[0127]

[0128] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A long-acting broad-spectrum antibacterial and antiviral composition, characterized in that: According to weight percentage, the raw materials include 1-6% of nanomaterials, 0.1-1% of alkylbenzene sulfonate, 1-2% of antiviral ingredients, 0-2% of surfactants, and the balance of alkane oil; The nanomaterial includes graphene and basic zinc carbonate; the weight ratio of graphene to basic zinc carbonate is (1-4.6):1; The antiviral ingredient is tea extract, and the tea extract is selected from at least one of black tea extract, green tea extract, white tea extract, and dark tea extract; The surfactant is a cationic surfactant; The cationic surfactant is selected from quaternary ammonium salt compounds, the quaternary ammonium salt compound is dodecyl dimethyl betaine, the weight ratio of the alkylbenzene sulfonate to the surfactant is (0.5-2):1; the HLB value of the alkylbenzene sulfonate is 9-12; The alkane oil is mineral oil, and the kinematic viscosity of the mineral oil is 4-28 mm 2 / s; The weight ratio of the nano material to the alkylbenzene sulfonate is (7-15):1; The preparation method of the long-acting broad-spectrum antibacterial and antiviral composition comprises the following steps: mixing graphene and basic zinc carbonate at a temperature above 200° C., and then mixing the mixed graphene with alkylbenzene sulfonate, antiviral components, surfactants, and alkane oil to obtain the long-acting broad-spectrum antibacterial and antiviral composition.

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