Fragrance emitting carrier, fragrance emitting body and preparation method of fragrance emitting carrier

Abstract

The invention discloses a fragrance-emitting carrier, a fragrance-emitting body and a preparation method of the fragrance-emitting carrier, and the preparation method of the fragrance-emitting carrier comprises the following steps: mixing carbon-based powder and an adhesive, and carrying out compression molding to form a carbon block or a carbon rod; placing the carbon block or the carbon rod in high-temperature air at 300-400 DEG C to form an oxygen-containing functional group on the surface of the carbon block or the carbon rod; continuously and gradually heating the carbon block or the carbon rod to 1500 + / -50 DEG C, introducing inert gas to carry out air flow impact induction on the carbon block or the carbon rod, so that carbon atoms are rearranged to form a carbon-carbon double bond structure, and stripping the carbon block or the carbon rod by utilizing shearing force during air flow impact to generate nanoscale pores; gradually cooling the carbon block or the carbon rod to room temperature; soaking the carbon block or the carbon rod in an acid solution to remove metal residues; and placing the carbon block or the carbon rod in a negative pressure environment to repair lattice defects. The fragrance-emitting carrier has excellent fragrance storage performance and electrical conductivity, can be directly used as a resistor for heating, and does not need to be heated by an additional heating element.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fragrance products, in particular to a fragrance carrier, a fragrance body and a preparation method of the fragrance carrier. BACKGROUND

[0002] With the development of economy, people's life quality is getting higher and higher, and various kinds of aromatherapy products have entered people's life. These products not only can bring comfortable olfactory experience, but also often combine with indoor decoration, personal taste and life art.

[0003] The existing fragrance products adopt the technologies of burning, heating, atomization or increasing the surface area to release fragrance; among them, the burning fragrance releasing mode has safety hazards due to open flame, so this mode is generally less used, and the last three modes are mainly used; but the heating and atomization modes need relatively complex components to realize, such as the heating mode needs to add heating wires and other heating components in the fragrance product to heat the fragrance body, and the atomization mode needs to use atomization pieces and liquid guiding components or ultrasonic atomizers and liquid fragrance to realize atomization and fragrance releasing. These two modes will cause the internal structure of the fragrance product to be complex; and the mode of using cotton sticks, cotton pieces and rattan to increase the surface area to release fragrance cannot control the speed of fragrance releasing and has poor fragrance releasing effect. SUMMARY

[0004] In order to overcome the defects of the existing technology, the present application provides a fragrance carrier, a fragrance body and a preparation method of the fragrance carrier. The fragrance carrier is made of carbon-based powder and has excellent fragrance storage performance and conductivity. The fragrance carrier can be directly used as a resistance to heat, without the need for additional heating components to heat it, thereby simplifying the internal structure of the fragrance product.

[0005] In a first aspect, a fragrance carrier is provided, comprising the following steps:

[0006] S1, mixing carbon-based powder and a binder and then molding to form a carbon block or a carbon rod;

[0007] S2, placing the carbon block or the carbon rod in high-temperature air at 300-400 DEG C to form oxygen-containing functional groups on the surface of the carbon block or the carbon rod;

[0008] S3, continuing to heat the carbon block or the carbon rod to 1500±50 DEG C, and introducing inert gas to induce airflow impact on the carbon block or the carbon rod to rearrange carbon atoms on the carbon block or the carbon rod to form short-range ordered carbon-carbon double bond structure, and using the shear force in airflow impact to strip the carbon block or the carbon rod to produce nanoscale pores;

[0009] S4, gradually cooling the carbon block or the carbon rod to room temperature;

[0010] S5, soaking the carbon block or carbon rod in an acid solution to remove metal residues;

[0011] S6, placing the carbon block or carbon rod in a negative pressure environment to repair lattice defects.

[0012] Further, in step S1, the mass percentage between the carbon-based powder and the adhesive is 95:5.

[0013] Further, the carbon-based powder is amorphous carbon with a particle size of <50 μm, and the adhesive is polytetrafluoroethylene.

[0014] Further, in step S2, the carbon block or carbon rod is placed in a heating box, and the air temperature inside the heating box is heated to 300-400℃ by microwave heating, and the carbon block or carbon rod is placed in the 300-400℃ high temperature air for 1-2 min.

[0015] Further, in step S3, the temperature in the heating box is gradually increased to 1500±50℃ by microwave heating, and the temperature is maintained for 5-10 min, and argon gas is introduced into the heating box as a protective gas during the heating process; then the temperature is maintained at 1500±50℃ for 30 min, and helium gas is introduced into the heating box to induce airflow impact on the carbon block or carbon rod.

[0016] Further, when the temperature is gradually increased to 1500±50℃, the pressure in the heating box is controlled at 0.1 MPa, and the gas flow rate of argon is controlled at 5 m / s; when the temperature is maintained at 1500±50℃, the pressure in the heating box is controlled at 0.4-0.6 MPa, and the gas flow rate of helium is controlled at 200-250 m / s.

[0017] Further, in step S4, the temperature in the heating box is rapidly reduced to room temperature within 5-10 min, and argon or helium is introduced into the heating box as a protective gas during the cooling process, and the pressure in the heating box is controlled at 0.1 MPa, and the gas flow rate of argon or helium is controlled at less than 5 m / s.

[0018] Further, in step S5, the acid solution is a mixture of nitric acid and hydrochloric acid, and the volume ratio of nitric acid to hydrochloric acid is 1:3.

[0019] In a second aspect, the present application also provides a fragrance carrier prepared by the method of making a fragrance carrier according to any one of the first aspect.

[0020] In a third aspect, the present application also provides a fragrance body obtained by adsorbing a fragrance essential oil on the fragrance carrier according to the second aspect.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] In the present application, carbon-based powder and adhesive are mixed to form a carbon block or carbon rod by molding, and the carbon block or carbon rod is restructured by high temperature and inert gas, and the prepared fragrance carrier has excellent fragrance storage performance, can form a fragrance emitting body by adsorbing liquid fragrance, and can directly use the fragrance carrier as a resistance heating element, that is, when the fragrance carrier adsorbing liquid fragrance is used as a fragrance emitting body in a fragrance product, the fragrance carrier is directly heated by electricity, without the need to set up an additional heating element to heat it, which simplifies the internal structure of the fragrance product, and the electric heating mode can accelerate the volatilization of fragrance molecules in the fragrance carrier, realize rapid and accurate fragrance release, and there is no risk of combustion, improving safety.

[0023] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the present application. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments will be described below in conjunction with the embodiments of the present application. Obviously, the following described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0026] It should also be understood that the terms used in the specification of the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application. As used in the specification and the appended claims of the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] The raw materials involved in the present application can be directly purchased from the market. For process parameters not specifically mentioned, refer to conventional techniques.

[0028] Embodiment 1

[0029] The present embodiment provides a method for making a fragrance carrier, which specifically includes the following processes:

[0030] (1) Molding process: carbon-based powder is mixed with a binder and then molded into a carbon rod.

[0031] As a preferred embodiment, the mass percentage between the carbon-based powder and the binder is 95:5.

[0032] As a preferred embodiment, the carbon-based powder is amorphous carbon with a particle size of <50 μm, and the ash content index of the amorphous carbon is less than 0.5%, and the binder is preferably polytetrafluoroethylene.

[0033] As a preferred embodiment, the amorphous carbon is selected from porous carbon materials with high specific surface area, uniform porosity, and good electrical conductivity, such as activated carbon and graphene.

[0034] As a preferred embodiment, the diameter of the carbon rod is 11 mm, and the length is 38 mm. The size of the carbon rod can also be changed according to the actual needs of fragrance diffusion.

[0035] In another embodiment, the carbon-based powder can also be mixed with a binder and molded into a carbon block or other shapes according to the design shape and the needs of fragrance diffusion.

[0036] (2) Pre-oxidation: the carbon block or carbon rod is placed in high-temperature air at 300-400°C to form oxygen-containing functional groups on the surface of the carbon rod, which can improve the thermal stability, heat resistance, flame resistance, and electrical conductivity of the carbon rod.

[0037] In the above, the carbon rod is placed in a heating box, and the air temperature inside the heating box is heated to 300-400°C by microwave heating, and the carbon rod is placed in the high-temperature air at 300-400°C for 1-2 min, that is, the air temperature in the heating box is maintained at 300-400°C for 1-2 min, so as to form oxygen-containing functional groups on the surface of the carbon rod.

[0038] (3) High-temperature induction: the air temperature in the heating box is gradually and slowly increased to 1500±50°C by microwave heating, and the carbon rod in the heating box is synchronously heated to 1500±50°C, and argon gas is introduced into the heating box for internal and external circulation to avoid cracking of the carbon rod during heating; then the temperature is maintained at 1500±50°C for 30 min, and helium gas is introduced into the heating box for internal and external circulation to induce the carbon rod by airflow impact, so that the carbon atoms on the carbon rod are rearranged to form short-range ordered carbon-carbon double bond structures, and the shear force during airflow impact is used to peel off the carbon rod to produce nanoscale pores.

[0039] In the above, the temperature is gradually and slowly increased from 300-400°C to 1500±50°C, and the duration of the temperature increase is 5-10 min, that is, the temperature increase rate in the entire process is controlled at 105-250°C / min.

[0040] In the above, when gradually and slowly heating to 1500±50℃, the pressure in the heating box is controlled at 0.1 MPa by passing in argon, and the gas flow rate of the argon is controlled at 5 m / s; when keeping the temperature at 1500±50℃, the pressure in the heating box is controlled at 0.4-0.6 MPa (preferably 0.5 MPa) by passing in helium, and the gas flow rate of the helium is controlled at 200-250 m / s, so as to form high-speed airflow shear force.

[0041] (4) Rapid quenching: the temperature in the heating box is rapidly reduced to room temperature within 5-10 min, so as to synchronously reduce the carbon rod to room temperature, and argon or helium is passed into the heating box as a protective gas during the reduction process, and the pressure in the heating box is controlled at 0.1 MPa, and the gas flow rate of the argon or helium is controlled at less than 5 m / s.

[0042] (5) Deionization: the carbon rod is soaked in an acidic solution, and the metal ions on the carbon rod will react with the acidic solution to remove the metal residues on the carbon rod.

[0043] In the above, the acidic solution is a mixed solution composed of nitric acid and hydrochloric acid, and the volume ratio of the nitric acid to the hydrochloric acid is 1:3.

[0044] (6) Deionization: the carbon rod is placed in a negative pressure environment for 30-60 min to repair the lattice defects on the carbon rod.

[0045] In the above, the carbon rod is placed in a negative pressure box, and a negative pressure environment is formed in the negative pressure box by vacuumizing, and the pressure of the negative pressure environment is slightly lower than the atmospheric pressure (the atmospheric pressure is about 101.3 kPa), 101.3 kPa; in this embodiment, the pressure of the negative pressure environment is preferably 90-95 kPa.

[0046] Through experimental tests, the carbon rod made in the above embodiment has the following characteristics:

[0047] 1. Multi-stage pore distribution: the micropores (0.8-1.2 nm) account for 35±3%, and the mesopores (2-8 nm) account for 50±5%;

[0048] 2. Carbon-carbon double bond retention rate: through Raman spectrum detection, ID / IG=0.78-0.92 (D peak 1350 cm -1 , G peak 1580 cm -1 );

[0049] 3. Surface resistivity: 30-48 Ω·cm (measured by a four-probe method).

[0050] 4. Thermal response speed: 90% of the set temperature is reached within 10 s after power-on.

[0051] Embodiment 2

[0052] The embodiment provides a fragrance-emitting body obtained by adsorbing a fragrance essential oil on a fragrance-emitting carrier, wherein the fragrance-emitting carrier is prepared by the method for preparing a fragrance-emitting carrier as described in the embodiment 1.

[0053] In the above, the fragrance-emitting carrier is soaked in the fragrance essential oil at a temperature of 25℃ for 24h, and the impregnation rate reaches 38%.

[0054] The relationship between the fragrance-emitting rate of the fragrance-emitting body and the voltage and temperature is shown in the following table:

[0055]

[0056] The fragrance-emitting body is tested by applying a direct current voltage of 3-12V, the surface temperature of the fragrance-emitting body is increased, the specific temperature change is shown in the above table, and the release rate of the fragrance is significantly improved, which is three to more than one hundred times higher than the release rate in the passive release (i.e. natural evaporation at room temperature 25℃).

[0057] The technical solutions provided by the embodiments of the present application are described in detail above, and specific examples are applied to the principles and implementation modes of the embodiments of the present application. The above embodiment description is only applicable to help understand the principles of the embodiments of the present application; meanwhile, for those skilled in the art, according to the embodiments of the present application, the specific implementation modes and application ranges will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A method of making a fragrance-bearing support, characterized in that, The method comprises the following steps: S1, mixing carbon-based powder with a binder and then molding to form a carbon block or carbon rod; S2, placing the carbon block or carbon rod in high-temperature air at 300-400℃ to form oxygen-containing functional groups on the surface of the carbon block or carbon rod; S3, gradually heating the carbon block or carbon rod to 1500±50℃ and introducing inert gas to induce airflow impact on the carbon block or carbon rod to rearrange carbon atoms on the carbon block or carbon rod to form short-range ordered carbon-carbon double bond structures, and to produce nanoscale pores by peeling off the carbon block or carbon rod with the shearing force during airflow impact; S4, gradually cooling the carbon block or carbon rod to room temperature; S5, soaking the carbon block or carbon rod in an acidic solution to remove metal residues; S6, placing the carbon block or carbon rod in a negative pressure environment to repair lattice defects.

2. The method of making a perfumed carrier according to claim 1, characterized in that, In step S1, the mass percentage between the carbon-based powder and the binder is 95:

5.

3. The method of making a perfumed carrier according to claim 2, characterized in that, The carbon-based powder is amorphous carbon with a particle size of <50μm, and the binder is polytetrafluoroethylene.

4. Process for the production of a perfuming support according to any one of claims 1 to 3, characterized in that, In step S2, the carbon block or carbon rod is placed in a heating box, and the air temperature inside the heating box is heated to 300-400℃ by microwave heating, and the carbon block or carbon rod is placed in the high-temperature air at 300-400℃ for 1-2min.

5. A method of making a perfumed carrier according to claim 4, characterized in that, In step S3, the temperature inside the heating box is gradually increased to 1500±50℃ by microwave heating for 5-10min, and argon gas is introduced as a protective gas during the heating process; then the temperature is kept at 1500±50℃ for 30min, and helium gas is introduced to induce airflow impact on the carbon block or carbon rod.

6. A method of making a perfumed carrier according to claim 5, characterized in that, When the temperature is gradually increased to 1500±50℃, the pressure inside the heating box is controlled at 0.1MPa, and the gas flow rate of argon is controlled at 5m / s; when the temperature is kept at 1500±50℃, the pressure inside the heating box is controlled at 0.4-0.6MPa, and the gas flow rate of helium is controlled at 200-250m / s.

7. A method of making a perfumed carrier according to claim 6, characterized in that, In step S4, the temperature inside the heating box is rapidly decreased to room temperature within 5-10min, argon or helium is introduced as a protective gas during the cooling process, the pressure inside the heating box is controlled at 0.1MPa, and the gas flow rate of argon or helium is controlled at less than 5m / s.

8. The method of claim 1, wherein the fragranced carrier is produced by a process comprising: In step S5, the acidic solution is a mixture of nitric acid and hydrochloric acid with a volume ratio of 1:

3.

9. A perfumed carrier, characterized in that, The fragrance-emitting carrier is prepared by the method of any one of claims 1-8.

10. A perfuming body, characterized in that, The fragrance-emitting carrier is obtained after absorbing the essential oil by the method of claim 9.

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