Negative oxygen ion ecological liquid and preparation method thereof

Abstract

This invention discloses a negative oxygen ion ecological liquid and its preparation method, relating to the field of air purification materials technology. The ecological liquid consists of 10-15% plant extracts, 10-15% functional carriers, 15-25% negative ion activating materials, 3-6% functional additives, and the remainder purified water. The plant extracts are compounded in a specific ratio, the negative ion activating materials are modified and dispersed by plasma, and the functional carrier is a compound of aloe vera gel and chitosan. The preparation method is simple and controllable, suitable for industrialization. This invention solves the problems of existing products having single functions, poor long-term effectiveness, and insufficient compatibility, while possessing high negative oxygen ion release efficiency, long-term formaldehyde degradation, and broad-spectrum antibacterial properties, without secondary pollution, and with strong practicality.

Description

Technical Field

[0001] This invention relates to the field of air purification materials technology, and in particular to a negative oxygen ion ecological liquid and its preparation method. Background Technology

[0002] With rapid urbanization and the widespread use of interior decoration materials, air pollutants such as formaldehyde, benzene compounds, and PM2.5 have become significant factors affecting human health. Traditional air purification methods, such as activated carbon adsorption, photocatalytic catalysis, and ventilation, have limitations such as adsorption saturation, reliance on light, and lack of sustained effectiveness, making it difficult to meet people's demand for long-lasting, active air purification. Negative oxygen ions, acting as "air vitamins," can improve air quality by neutralizing particulate matter, oxidizing and decomposing organic pollutants, and inhibiting microbial activity. Therefore, developing functional materials that can stably release negative oxygen ions has become a hot research topic in the industry.

[0003] Existing negative ion materials are mostly based on minerals such as tourmaline and kiwistone, prepared into coatings or sprays through mechanical crushing or simple compounding. These materials suffer from problems such as severe mineral particle agglomeration, poor dispersibility in water-based systems, and rapid decay of negative ion release efficiency over time, making it difficult to achieve long-term, stable air purification effects. Furthermore, most products only focus on increasing negative ion concentration, lacking targeted removal capabilities for pollutants such as formaldehyde and PM2.5, and lacking synergistic designs with natural plant active ingredients. In recent years, natural plant extracts, represented by Poria cocos, aloe vera, and pine needles, have shown unique advantages in the field of air purification. Poria cocos polysaccharides can adsorb heavy metals and organic pollutants through complexation, aloe vera gel contains aloin which has antibacterial and anti-inflammatory activity, and pine needle essential oil can effectively decompose odor molecules. However, current technologies often involve simple mixing of plant extracts and negative ion mineral materials without fully considering their compatibility and synergistic mechanisms, resulting in unstable product performance, limited functionality, and an inability to simultaneously meet the dual needs of negative ion release and pollutant degradation.

[0004] Furthermore, existing preparation processes for negative ion materials have significant drawbacks: tourmaline powder is prone to agglomeration and sedimentation when directly dispersed in the aqueous phase, which not only reduces the release efficiency of negative ions but also leads to product stratification and inconvenience in use. Simultaneously, the extraction methods for plant extracts are crude, resulting in low retention rates of effective components and hindering their full purification and antibacterial effects. These problems restrict the industrial application of negative ion ecological liquids and fail to meet consumer demand for efficient, safe, and long-lasting air purification products.

[0005] Therefore, how to provide a negative oxygen ion ecological liquid that combines high negative oxygen ion release efficiency, long-lasting formaldehyde degradation ability and broad-spectrum antibacterial activity has become a technical problem that urgently needs to be solved in the field of air purification materials. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a negative oxygen ion ecological liquid with high negative oxygen ion release efficiency, long-lasting formaldehyde degradation ability and broad-spectrum antibacterial activity, as well as its preparation method.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 10-15% plant extract, 10-15% functional carrier, 15-25% negative ion activating material, 3-6% functional additives, and the balance being purified water; the plant extract is composed of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extracts in a mass ratio of (5-8):(3-6):(2-4):(3-5).

[0008] Preferably, the synergistic plant extract is at least one of cedarwood extract, scutellaria root extract, and rosemary extract.

[0009] Preferably, the preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0010] Preferably, the method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract.

[0011] Preferably, the preparation method of the cedarwood extract includes the following steps: taking cedarwood chips and using supercritical fluid extraction... Extraction: Collect the extract to obtain cedrol extract.

[0012] Preferably, the supercritical CO2 extraction is performed at a pressure of 24-26 MPa, a temperature of 43-48°C, and a time of 2-4 hours.

[0013] Preferably, the preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0014] Preferably, the preparation method of the Scutellaria baicalensis root extract includes the following steps: taking Scutellaria baicalensis root, crushing it to 40 mesh, adding 10 times its weight of 60% ethanol solution, ultrasonically extracting it at 60°C for 1 hour, filtering and concentrating it, and spray drying it to obtain the Scutellaria baicalensis root extract.

[0015] Preferably, the rosemary extract has a particle size of 80-100 mesh and is provided by Shaanxi Jiuyuan Biotechnology Co., Ltd.

[0016] Preferably, the functional carrier is a mixture of aloe vera gel and chitosan in a mass ratio of (3-4):(1-2).

[0017] Preferably, the chitosan has a weight-average molecular weight of 3kDa-5kDa and a degree of substitution of 90%-95%.

[0018] Preferably, the negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: crushing the tourmaline ore to 2000-3000 mesh and performing plasma surface modification treatment; then mixing the modified tourmaline powder, purified water, and tea saponin, and dispersing it for 30 min at 8000-10000 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; then adding xanthan gum and stirring evenly to obtain a stable tourmaline dispersion.

[0019] Preferably, the plasma surface modification treatment has a power of 500W, a time of 15 minutes, and is performed in an air atmosphere.

[0020] Preferably, the mass ratio of the modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0021] Preferably, the functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of (1-3):(1-4):(0.5-1.5):(0.1-0.3).

[0022] Preferably, the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0023] Another objective of this invention is to provide a method for preparing the aforementioned negative oxygen ion ecological liquid, comprising the following steps: adding purified water to a reaction vessel, heating to 40-50°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place.

[0024] Due to the application of the above technical solution, the present invention has the following beneficial effects: (1) The negative oxygen ion ecological liquid and its preparation method disclosed in this invention achieve a synergistic effect of pollutant removal and negative oxygen ion release through the precise compounding design of plant extracts, and obtain a comprehensive purification effect that was not expected in the prior art. Unlike the existing simple mixed plant components, this technology combines Poria cocos extract, pine needle extract, Artemisia argyi extract and specific synergistic plant extracts in the optimal ratio, and combines them with a functional carrier composed of aloe vera gel and low molecular weight chitosan. This not only allows the complexation and adsorption capacity of Poria cocos polysaccharide, the odor decomposition capacity of pine needle essential oil and the antibacterial capacity of Artemisia argyi components to be fully utilized, but also solves the pain points of easy loss of effective components of plant extracts and short action cycle through the coating and dispersion effect of the functional carrier. This makes the ecological liquid significantly improve the degradation rate of organic pollutants such as formaldehyde while continuously releasing negative oxygen ions, and the degradation effect can be stably maintained for more than 3 months, breaking through the functional limitations of traditional products that "either focus on negative ion release or focus on single pollutant adsorption".

[0025] (2) The negative oxygen ion ecological liquid and its preparation method disclosed in this invention optimize the modification and dispersion process of the negative ion excitation material, and completely solve the technical problems of tourmaline particle agglomeration and rapid decay of negative oxygen ion release efficiency in the prior art, resulting in an unexpected long-term stable release effect. In the prior art, the tourmaline is not specifically modified on the surface, and direct dispersion easily leads to particle agglomeration and sedimentation, causing the negative oxygen ion release efficiency to decay by more than 50% within 1 month. However, this technology adopts a composite process of plasma surface modification combined with high-speed shear emulsification and ultrasonic dispersion, and is equipped with a synergistic dispersion system of tea saponin and xanthan gum, so that the tourmaline particles are stably dispersed in the water-based system. This not only avoids the stratification phenomenon, but also makes the negative oxygen ion release concentration high and the release efficiency decay rate low, which is far better than the decay level of the prior art. At the same time, the compatibility between the modified tourmaline and plant extracts is significantly improved, further enhancing the overall purification performance.

[0026] (3) The negative oxygen ion ecological liquid and its preparation method disclosed in this invention, through the synergistic effect of component matching and preparation process, unexpectedly achieve a dual improvement in antibacterial performance and product safety, thus broadening the application scenarios of the product. Most existing negative oxygen ion products lack broad-spectrum antibacterial ability, and some products pose safety hazards due to the addition of chemical additives. However, the plant extracts selected in this invention have natural antibacterial activity. Combined with food-grade preservatives and mild functional additives, it not only has a high antibacterial rate against common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus, but also avoids the irritation and residue problems caused by chemical antibacterial agents. It can be safely applied in sensitive scenarios such as infant rooms and elderly rooms. At the same time, the combination of high-pressure homogenization and precision filtration in the preparation process not only improves the uniformity and stability of the product, but also removes tiny impurities, avoiding the problem of clogging the spray equipment during use and reducing the failure rate of industrial applications.

[0027] (4) The negative oxygen ion ecological liquid and its preparation method disclosed in this invention break through the limitations of the existing technology of "simple mixing of components and crude process". Through the synergistic design of each component and process optimization, it unexpectedly achieves the integration of multiple functions such as "long-term release of negative oxygen ions, efficient degradation of formaldehyde, broad-spectrum antibacterial, and safety and stability". It solves the technical pain point that existing products cannot take into account multiple aspects of performance. Its comprehensive performance far exceeds that of existing single-function or simple compound negative oxygen ion products. It not only improves the effect and durability of air purification, but also lowers the threshold for industrial application. It has significant industrial value and market competitiveness and can be widely used in various indoor scenarios such as home, office, and medical care to meet the needs of different groups for high-quality air purification products. Detailed Implementation

[0028] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. Example 1

[0029] This example provides a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 10% plant extract, 10% functional carrier, 15% negative ion activating material, 3% functional additive, and the remainder being purified water; the plant extract is a compound of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extract in a mass ratio of 5:3:2:3; the synergistic plant extract is cedarwood extract.

[0030] The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0031] The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract.

[0032] The preparation method of the cedarwood extract includes the following steps: taking cedarwood chips and using supercritical fluid extraction... Extraction: Collect the extract to obtain cedrol extract.

[0033] The supercritical CO2 extraction was performed at a pressure of 24 MPa, a temperature of 43 °C, and a time of 2 h.

[0034] The preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0035] The functional carrier is composed of aloe vera gel and chitosan in a mass ratio of 3:1; the weight-average molecular weight of the chitosan is 3 kDa and the degree of substitution is 90%.

[0036] The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing the raw tourmaline ore to 2000 mesh and performing plasma surface modification treatment; then mixing the modified tourmaline powder, refined water, and tea saponin, and dispersing it for 30 min at 8000 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment has a power of 500 W and a time of 15 min in an air atmosphere; the mass ratio of the modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0037] The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of 1:1:0.5:0.1; the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0038] A method for preparing the aforementioned negative oxygen ion ecological liquid includes the following steps: adding purified water to a reaction vessel, heating to 40°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place. Example 2

[0039] This example provides a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 12% plant extract, 11% functional carrier, 18% negative ion activating material, 4% functional additive, and the balance being purified water; the plant extract is a compound of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extract in a mass ratio of 6:4:2.5:3.5; the synergistic plant extract is Scutellaria baicalensis root extract.

[0040] The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0041] The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract; the supercritical CO2 extraction is performed at a pressure of 25 MPa, a temperature of 44°C, and a time of 2.5 h.

[0042] The preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0043] The preparation method of the Scutellaria baicalensis root extract includes the following steps: take Scutellaria baicalensis root, crush it to 40 mesh, add 10 times the mass of 60% ethanol solution, extract it by ultrasonication at 60℃ for 1 hour, filter and concentrate it, and spray dry it to obtain Scutellaria baicalensis root extract.

[0044] The functional carrier is composed of aloe vera gel and chitosan in a mass ratio of 3.2:1.3; the weight-average molecular weight of the chitosan is 3.5 kDa and the degree of substitution is 92%.

[0045] The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing tourmaline ore to 2300 mesh and performing plasma surface modification treatment; then mixing modified tourmaline powder, refined water, and tea saponin, and dispersing the mixture for 30 min at 8500 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment has a power of 500 W and a time of 15 min in an air atmosphere; the mass ratio of modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0046] The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of 1.5:2:0.8:0.15; the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0047] A method for preparing the aforementioned negative oxygen ion ecological liquid includes the following steps: adding purified water to a reaction vessel, heating to 43°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place. Example 3

[0048] This example provides a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 13% plant extract, 13% functional carrier, 20% negative ion activating material, 4.5% functional additives, and the balance being purified water; the plant extract is a compound of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extract in a mass ratio of 6.5:4.5:3:4; the synergistic plant extract is rosemary extract.

[0049] The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0050] The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract; the supercritical CO2 extraction is performed at a pressure of 24-26 MPa, a temperature of 43-48℃, and a time of 2-4 h.

[0051] The preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0052] The rosemary extract has a particle size of 80-100 mesh and is provided by Shaanxi Jiuyuan Biotechnology Co., Ltd.; the functional carrier is a compound of aloe vera gel and chitosan in a mass ratio of 3.3:1.3; the weight average molecular weight of the chitosan is 4 kDa and the degree of substitution is 93%.

[0053] The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing tourmaline ore to 2500 mesh and performing plasma surface modification treatment; then mixing modified tourmaline powder, refined water, and tea saponin, and dispersing the mixture for 30 min at 9000 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment has a power of 500 W and a time of 15 min in an air atmosphere; the mass ratio of modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0054] The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of 2:2.5:1:0.2; the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0055] A method for preparing the aforementioned negative oxygen ion ecological liquid includes the following steps: adding purified water to a reaction vessel, heating to 45°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place. Example 4

[0056] This example provides a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 14% plant extract, 14% functional carrier, 23% negative ion activating material, 5.5% functional additives, and the balance being purified water; the plant extract is a compound of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extracts in a mass ratio of 7.5:5.5:3.5:4.5; the synergistic plant extract is a compound of cedarwood extract, Scutellaria baicalensis root extract, and rosemary extract in a mass ratio of 1:2:1.

[0057] The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0058] The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract.

[0059] The preparation method of the cedarwood extract includes the following steps: taking cedarwood chips and using supercritical fluid extraction... Extraction was performed, and the extract was collected to obtain cedarwood extract; the supercritical CO2 extraction was carried out at a pressure of 25 MPa, a temperature of 45 °C, and a time of 3 h.

[0060] The preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0061] The preparation method of the Scutellaria baicalensis root extract includes the following steps: take Scutellaria baicalensis root, crush it to 40 mesh, add 10 times the mass of 60% ethanol solution, extract it by ultrasonication at 60℃ for 1 hour, filter and concentrate it, and spray dry it to obtain Scutellaria baicalensis root extract.

[0062] The rosemary extract has a particle size of 80-100 mesh and is provided by Shaanxi Jiuyuan Biotechnology Co., Ltd.; the functional carrier is a compound of aloe vera gel and chitosan in a mass ratio of 3.5:1.5; the weight average molecular weight of the chitosan is 4 kDa and the degree of substitution is 93%.

[0063] The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing tourmaline ore to 2800 mesh and performing plasma surface modification treatment; then mixing modified tourmaline powder, refined water, and tea saponin, and dispersing the mixture for 30 min at 9500 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment has a power of 500 W and a time of 15 min in an air atmosphere; the mass ratio of modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0064] The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of 2.5:3.5:1.4:0.25; the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0065] A method for preparing the aforementioned negative oxygen ion ecological liquid includes the following steps: adding purified water to a reaction vessel, heating to 48°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place. Example 5

[0066] This example provides a negative oxygen ion ecological liquid, comprising the following components by mass percentage: 15% plant extract, 15% functional carrier, 25% negative ion activating material, 6% functional additive, and the balance being purified water; the plant extract is a compound of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extract in a mass ratio of 8:6:4:5; the synergistic plant extract is cedarwood extract.

[0067] The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

[0068] The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and then extracting them using supercritical CO2 to obtain the pine needle extract.

[0069] The preparation method of the cedarwood extract includes the following steps: taking cedarwood chips and using supercritical fluid extraction... Extraction was performed, and the extract was collected to obtain cedarwood extract; the supercritical CO2 extraction was carried out at a pressure of 26 MPa, a temperature of 48 °C, and a time of 4 h.

[0070] The preparation method of the Artemisia argyi extract includes the following steps: take dried Artemisia argyi leaves, pulverize them to 40 mesh, add 12 times the mass of 60% ethanol solution, extract by ultrasonication at 60°C for 1 hour, filter and concentrate, and spray dry to obtain Artemisia argyi extract.

[0071] The functional carrier is composed of aloe vera gel and chitosan in a mass ratio of 4:2; the weight-average molecular weight of the chitosan is 5 kDa and the degree of substitution is 95%.

[0072] The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing the raw tourmaline ore to 3000 mesh and performing plasma surface modification treatment; then mixing the modified tourmaline powder, refined water, and tea saponin, and dispersing it for 30 min at 10000 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment has a power of 500 W and a time of 15 min in an air atmosphere; the mass ratio of the modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

[0073] The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of 3:4:1.5:0.3; the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

[0074] A method for preparing the aforementioned negative oxygen ion ecological liquid includes the following steps: adding purified water to a reaction vessel, heating to 50°C, then adding plant extracts, functional carriers, negative ion activating materials, and functional additives, stirring until homogeneous to obtain a mixture; transferring the mixture to a high-pressure homogenizer, homogenizing twice under 20 MPa conditions, cooling to room temperature after homogenization, and then... The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place.

[0075] Comparative Example 1 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of Poria cocos extract is used instead of the synergistic plant extract.

[0076] Comparative Example 2 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of Poria cocos extract is used instead of Artemisia argyi extract.

[0077] Comparative Example 3 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of Poria cocos extract is used instead of pine needle extract.

[0078] Comparative Example 4 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of pine needle extract is used instead of Poria cocos extract.

[0079] Comparative Example 5 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of aloe vera gel is used instead of chitosan.

[0080] Comparative Example 6 This example provides a negative oxygen ion ecological liquid, which is basically the same as Example 1, except that an equal amount of chitosan is used instead of aloe vera gel.

[0081] The performance of the negative oxygen ion ecological liquids in Examples 1-5 and Comparative Examples 1-6 was tested using the following methods. All experiments were conducted under standard environmental conditions (temperature 25±2℃, humidity 50±5%RH). Three parallel samples were set up for each group, and the average value was taken as the experimental result. The test results are shown in Table 1. 1. Negative oxygen ion concentration detection: Referring to GB / T 18883-2002 "Indoor Air Quality Standard", a negative oxygen ion detector (accuracy 10 ions / cm³) was used. 3 ), in 1m 3 In a sealed chamber, spray the ecological liquid evenly onto the inner wall of the chamber (dosage: 10g / m²). 2 The concentration of negative oxygen ions was measured at 24 hours and 30 days to evaluate the long-term effectiveness of negative oxygen ion release. 2. Formaldehyde degradation rate test: Referring to GB / T 27630-2011 "Guidelines for Air Quality Assessment in Passenger Cars", the formaldehyde degradation rate was measured at 1m... 3 Formaldehyde standard gas (initial concentration 1.0 mg / m³) was injected into the sealed chamber. 3 ), spray ecological liquid (10g / m 2 After that, the formaldehyde concentration was tested for 7 days, and the formaldehyde degradation rate was calculated according to the formula "degradation rate = (initial concentration - test concentration) / initial concentration × 100%"; 3. Sterilization rate test: Referring to GB / T 21551.2-2010 "Special requirements for antibacterial materials with antibacterial, sterilization and purification functions for household and similar electrical appliances", the suspension quantitative method was used to test the 24-hour sterilization rate of the ecological solution against Escherichia coli (ATCC 25922), with a bacterial concentration of 1×10⁻⁶. 6 CFU / mL.

[0082] As can be seen from the data in Table 1, the negative oxygen ion release concentration, formaldehyde degradation rate, and Escherichia coli sterilization rate of Examples 1-5 are significantly better than those of Comparative Examples 1-6. Moreover, with the optimization of component ratio and parameters, the performance of Examples 1-5 gradually improves. The 30-day negative oxygen ion concentration decay rate is ≤15%, the 7-day formaldehyde degradation rate is ≥87.5%, and the 24-hour Escherichia coli sterilization rate is ≥99.2%. In contrast, the performance of the comparative examples drops significantly due to the disruption of the synergistic system caused by the replacement of a single component. This fully demonstrates the rationality and inventiveness of the formulation and process of this invention.

[0083] Table 1 Performance test results of negative oxygen ion ecological liquid The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A negative oxygen ion ecological liquid, characterized in that, It comprises the following components by mass percentage: 10-15% plant extract, 10-15% functional carrier, 15-25% negative ion activating material, 3-6% functional additives, and the balance being purified water; the plant extract is composed of Poria cocos extract, pine needle extract, Artemisia argyi extract, and synergistic plant extracts in a mass ratio of (5-8):(3-6):(2-4):(3-5). 2.The negative oxygen ion eco-liquid of claim 1, wherein, The synergistic plant extracts are at least one of cedarwood extract, scutellaria root extract, and rosemary extract.

3. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The preparation method of the Poria cocos extract includes the following steps: take dried Poria cocos pieces, crush them to 60 mesh, add 10 times the mass of ethanol, reflux extract for 2 hours, filter and concentrate, and spray dry to obtain Poria cocos extract.

4. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The method for preparing the pine needle extract includes the following steps: washing and drying pine needles, and extracting them using supercritical CO2 to obtain the pine needle extract; the method for preparing the cedarwood extract includes the following steps: taking cedarwood chips, extracting them using supercritical CO2, collecting the extract to obtain the cedarwood extract.

5. The negative oxygen ion ecological liquid according to claim 4, characterized in that, The supercritical CO2 extraction is performed at a pressure of 24-26 MPa, a temperature of 43-48°C, and a time of 2-4 hours.

6. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The preparation method of the Artemisia argyi extract includes the following steps: taking dried Artemisia argyi leaves, pulverizing them to 40 mesh, adding 12 times the mass of a 60% ethanol solution, ultrasonically extracting at 60℃ for 1 hour, filtering, concentrating, and spray drying to obtain the Artemisia argyi extract; the preparation method of the Scutellaria baicalensis root extract includes the following steps: taking Scutellaria baicalensis root, pulverizing it to 40 mesh, adding 10 times the mass of a 60% ethanol solution, ultrasonically extracting at 60℃ for 1 hour, filtering, concentrating, and spray drying to obtain the Scutellaria baicalensis root extract; the particle size of the rosemary extract is 80-100 mesh.

7. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The functional carrier is composed of aloe vera gel and chitosan in a mass ratio of (3-4):(1-2); the weight-average molecular weight of the chitosan is 3kDa-5kDa, and the degree of substitution is 90%-95%.

8. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The negative ion excitation material is a tourmaline dispersion; the preparation method of the tourmaline dispersion includes the following steps: pulverizing tourmaline ore to 2000-3000 mesh and performing plasma surface modification treatment; then mixing modified tourmaline powder, refined water, and tea saponin, and dispersing the mixture for 30 min at 8000-10000 r / min using a high-speed shear emulsifier; transferring the dispersion to an ultrasonic processor and ultrasonically treating it for 20 min at 40 kHz and 300 W; subsequently adding xanthan gum and stirring until a stable tourmaline dispersion is obtained; the plasma surface modification treatment is performed at a power of 500 W for 15 min in an air atmosphere; The mass ratio of the modified tourmaline powder, refined water, tea saponin, and xanthan gum is 1:9:0.002:0.0015.

9. The negative oxygen ion ecological liquid according to claim 1, characterized in that, The functional additive is a compound of surfactant, stabilizer, preservative and chelating agent in a mass ratio of (1-3):(1-4):(0.5-1.5):(0.1-0.3); the surfactant is polysorbate-80; the stabilizer is sodium alginate; the preservative is food-grade sodium benzoate; and the chelating agent is disodium ethylenediaminetetraacetate.

10. A method for preparing a negative oxygen ion ecological liquid according to any one of claims 1-9, characterized in that, The process includes the following steps: Purified water is added to a reaction vessel and heated to 40-50℃. Then, plant extracts, functional carriers, negative ion activating materials, and functional additives are added and stirred until homogeneous, resulting in a mixture. The mixture is then transferred to a high-pressure homogenizer and homogenized twice at 20MPa. After homogenization, the mixture is cooled to room temperature. The product is filtered through a membrane to remove impurities and undispersed microparticles, yielding a finished negative oxygen ion ecological liquid. The finished product is then placed in a sealed container and stored in a cool, dry place.

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