A kind of plant essential oil formaldehyde remover and preparation method thereof

Abstract

The present application relates to a plant essential oil formaldehyde remover and a preparation method thereof, and relates to the technical field of air purifiers. The plant essential oil formaldehyde remover comprises the following components by weight: 15 to 20 parts of plant essential oil, 1 to 8 parts of nano titanium dioxide, 1 to 5 parts of silane coupling agent, 1 to 5 parts of emulsifier and 30 to 60 parts of deionized water; the plant essential oil is composed of camellia essential oil, lemon essential oil and bergamot essential oil. The plant essential oil formaldehyde remover provided by the present invention adopts the formaldehyde removal mode of "plant essential oil + photocatalyst", has the characteristics of green environmental protection, good formaldehyde removal effect, fast removal speed, etc., and effectively solves the technical problems of low formaldehyde removal efficiency and easy secondary pollution of chemical reagents in the presence of formaldehyde removers.

Description

Technical Field

[0001] The present application relates to the technical field of air purifiers, and in particular to a plant essential oil formaldehyde remover and a preparation method thereof. Background Art

[0002] Formaldehyde is a colorless toxic gas that has been classified as a carcinogen and teratogen by the World Health Organization. Formaldehyde can be absorbed through the respiratory tract and damage the body by increasing tissue active oxygen, lipid peroxidation, affecting the body's immune system and biomacromolecules. It also irritates the skin and mucous membranes and is sensitizing to the human body, causing allergic dermatitis, pigmentation, bronchial asthma, etc. Indoor decoration is very common, and formaldehyde in home decoration is mainly hidden in plywood, large core board, home furnishings made of high-density board, wooden floors, etc. With the improvement of people's living standards, the problem of formaldehyde pollution has attracted widespread attention.

[0003] At present, there are many methods to remove formaldehyde, such as ventilation, adsorption, ozone oxidation, plant purification, photocatalytic decomposition, chemical method, etc. At the same time, there are also many types of products to remove formaldehyde. Although the existing formaldehyde removers have a certain effect of removing formaldehyde, they have problems such as low formaldehyde removal efficiency and easy secondary pollution of chemical reagents. Summary of the invention

[0004] The present application provides a plant essential oil formaldehyde remover and a preparation method thereof, in order to solve the technical problems of the existing formaldehyde removers, such as low formaldehyde removal efficiency and easy secondary pollution of chemical reagents.

[0005] In a first aspect, the present application provides a plant essential oil formaldehyde remover, which comprises the following components in parts by weight:

[0006] 15-20 parts of plant essential oil, 1-8 parts of nano titanium dioxide, 1-5 parts of silane coupling agent, 1-5 parts of emulsifier and 30-60 parts of deionized water;

[0007] The plant essential oil consists of camellia essential oil, lemon essential oil and bergamot essential oil.

[0008] Furthermore, the plant essential oil formaldehyde remover comprises the following components in parts by weight:

[0009] 16-19 parts of plant essential oil, 4-6 parts of nano titanium dioxide, 1-5 parts of silane coupling agent, 1-5 parts of emulsifier and 30-60 parts of deionized water.

[0010] Furthermore, the weight ratio of the plant essential oil to the nano titanium dioxide is 2:0.8.

[0011] Furthermore, the plant essential oil is composed of camellia essential oil, lemon essential oil and bergamot essential oil in a weight ratio of (5-7):(1-2):(1-2).

[0012] Furthermore, the particle size of the nano titanium dioxide is 5-10 nm.

[0013] Furthermore, the silane coupling agent includes at least one of silane coupling agent KH550 and silane coupling agent A171.

[0014] Furthermore, the emulsifier is a non-ionic emulsifier.

[0015] Furthermore, the nonionic emulsifier includes at least one of polyoxyethylene ether, polyoxypropylene ether and polyvinyl alcohol.

[0016] In a second aspect, the present application provides a method for preparing the plant essential oil formaldehyde remover according to any one of the first aspects, the preparation method comprising:

[0017] The nano titanium dioxide and the silane coupling agent are first mixed to obtain a first mixture;

[0018] The plant essential oil, the emulsifier and the deionized water are mixed for the second time to obtain a second mixed material;

[0019] The first mixed material and the second mixed material are mixed for the third time to obtain the plant essential oil formaldehyde remover.

[0020] Furthermore, the step of performing a third mixing of the first mixed material and the second mixed material to obtain the plant essential oil formaldehyde remover comprises:

[0021] The first mixture is added to the second mixture for ultrasonic mixing and stirring to obtain the plant essential oil formaldehyde remover; wherein the working parameters of the ultrasonic mixing and stirring include: ultrasonic power of 950W to 1200W, stirring speed of 6000 to 8000rpm / min, and stirring time of 5 to 15 minutes.

[0022] The above technical solution provided by the embodiment of the present application has at least the following advantages compared with the prior art:

[0023] The embodiment of the present application provides a plant essential oil formaldehyde remover, which adopts the formaldehyde removal mode of "plant essential oil + photocatalyst", and has the characteristics of being green and environmentally friendly, having good formaldehyde removal effect, and having fast removal speed. Specifically, the plant essential oil formaldehyde remover adopts plant essential oils composed of specific types of camellia essential oil, lemon essential oil and bergamot essential oil as formaldehyde removal functional ingredients, and plays the role of adsorbing and purifying formaldehyde through oxidation degradation, complexation and other methods; at the same time, nano titanium dioxide, silane coupling agent and emulsifier are added in appropriate proportions, so that nano titanium dioxide is effectively dispersed in the entire mixed system, and nano titanium dioxide catalytically decomposes formaldehyde under the action of visible light; through the mutual synergy and cooperation between plant essential oil and nano titanium dioxide, the removal effect and removal efficiency of formaldehyde are improved together, and there is no secondary chemical pollution, which is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] Figure 1 A schematic flow chart of a method for preparing a plant essential oil formaldehyde remover provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.

[0029] In a first aspect, the present application provides a plant essential oil formaldehyde remover, which comprises the following components in parts by weight:

[0030] 15-20 parts of plant essential oil, 1-8 parts of nano titanium dioxide, 1-5 parts of silane coupling agent, 1-5 parts of emulsifier and 30-60 parts of deionized water;

[0031] The plant essential oil consists of camellia essential oil, lemon essential oil and bergamot essential oil.

[0032] The embodiment of the present application provides a plant essential oil formaldehyde remover, which adopts the formaldehyde removal mode of "plant essential oil + photocatalyst", and has the characteristics of being green and environmentally friendly, having good formaldehyde removal effect, and having fast removal speed. Specifically, the plant essential oil formaldehyde remover adopts plant essential oils composed of specific types of camellia essential oil, lemon essential oil and bergamot essential oil as formaldehyde removal functional ingredients, and plays the role of adsorbing and purifying formaldehyde through oxidation degradation, complexation and other methods; at the same time, nano titanium dioxide, silane coupling agent and emulsifier are added in appropriate proportions, so that nano titanium dioxide is effectively dispersed in the entire mixed system, and nano titanium dioxide catalytically decomposes formaldehyde under the action of visible light; through the mutual synergy and cooperation between plant essential oil and nano titanium dioxide, the removal effect and removal efficiency of formaldehyde are improved together, and there is no secondary chemical pollution, which is green and environmentally friendly.

[0033] In some specific embodiments, the camellia essential oil, lemon essential oil and bergamot essential oil used in the present application can be directly prepared from commercially available products or according to the preparation method reported in the prior art. For example, the camellia essential oil can be a product with a product number of S26653, the lemon essential oil can be a product with a product number of DF0017, and the bergamot essential oil can be a product with a product number of Italy No. 1. In terms of weight parts, the plant essential oil can be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts, etc.

[0034] In some specific embodiments, the nano titanium dioxide may be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, etc., by weight.

[0035] In some specific embodiments, the silane coupling agent may be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, etc., by weight.

[0036] In some specific embodiments, the emulsifier may be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, etc., by weight.

[0037] In some specific embodiments, the deionized water may be 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 ​​parts, 49 parts, 50 parts, 51 parts, 52 parts, 43 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, etc., by weight.

[0038] Preferably, the plant essential oil formaldehyde remover comprises the following components in parts by weight:

[0039] 16-19 parts of plant essential oil, 4-6 parts of nano titanium dioxide, 1-5 parts of silane coupling agent, 1-5 parts of emulsifier and 30-60 parts of deionized water.

[0040] More preferably, the plant essential oil formaldehyde remover comprises the following components in parts by weight:

[0041] 18 parts of plant essential oil, 5.4 parts of nano titanium dioxide, 3.5 parts of silane coupling agent, 3 parts of emulsifier and 48 parts of deionized water.

[0042] As an implementation method of the examples of the present application, the weight ratio of the plant essential oil to the nano titanium dioxide is 2:0.8.

[0043] The applicant has found through research that when the weight ratio of the plant essential oil and the nano-titanium dioxide is controlled to be 2:0.8 (the ratio is 2.5), the synergistic effect of the plant essential oil and nano-titanium dioxide in removing formaldehyde is better, which can significantly improve the removal effect and efficiency of formaldehyde.

[0044] As an implementation method of the examples of the present application, the plant essential oil is composed of camellia essential oil, lemon essential oil and bergamot essential oil in a weight ratio of (5-7):(1-2):(1-2).

[0045] The applicant has found that the camellia essential oil is selected as the main essential oil component, and a small amount of appropriate lemon essential oil and bergamot essential oil are used together, which has a good adsorption and purification effect on formaldehyde. In some specific embodiments, the weight ratio of the camellia essential oil, lemon essential oil and bergamot essential oil can be 5:1:1, 5:1:2, 5:2:1, 5:2:2, 6:1:1, 6:1:2, 6:2:1, 6:2:2, 7:1:1, 7:1:2, 7:2:1, 7:2:2, etc.; preferably 7:1:2.

[0046] As an implementation of the example of the present application, the particle size of the nano titanium dioxide is 5-10nm.

[0047] The present application selects nano titanium dioxide with a particle size of 5-10 nm and plant essential oils consisting of camellia essential oil, lemon essential oil and bergamot essential oil for better synergistic effect.

[0048] As an implementation of an embodiment of the present application, the silane coupling agent includes at least one of silane coupling agent KH550 and silane coupling agent A171.

[0049] The present application uses silane coupling agent KH550 and silane coupling agent A171, which helps to effectively disperse nano titanium dioxide in the entire system; in particular, when nano titanium dioxide with a particle size of 5-10nm is selected, a silane coupling agent composed of silane coupling agent KH550 and silane coupling agent A171 with a weight ratio of 2.5:1.5 is preferred, which effectively reduces the agglomeration of nano titanium dioxide, thereby ensuring the efficacy of the resulting formaldehyde remover.

[0050] As an implementation of an example of the present application, the emulsifier is a non-ionic emulsifier.

[0051] The present application uses a nonionic emulsifier, which is more conducive to the stability of the entire plant essential oil formaldehyde remover system. In some specific embodiments, the nonionic emulsifier includes at least one of polyoxyethylene ether, polyoxypropylene ether and polyvinyl alcohol. In particular, when nano titanium dioxide with a particle size of 5-10nm is selected, an emulsifier composed of polyoxypropylene ether and polyvinyl alcohol in a weight ratio of 1:2 is preferably used, which effectively reduces the agglomeration of nano titanium dioxide, thereby ensuring the efficacy of the resulting formaldehyde remover.

[0052] In a second aspect, based on a general inventive concept, the present application provides a method for preparing the plant essential oil formaldehyde remover according to any one of the first aspects, such as Figure 1 As shown, the preparation method comprises:

[0053] The nano titanium dioxide and the silane coupling agent are first mixed to obtain a first mixture;

[0054] The plant essential oil, the emulsifier and the deionized water are mixed for the second time to obtain a second mixed material;

[0055] The first mixed material and the second mixed material are mixed for the third time to obtain the plant essential oil formaldehyde remover.

[0056] The preparation method of the plant essential oil formaldehyde remover provided by the present application is simple to operate, does not require additional specific equipment, and is suitable for industrial production. At the same time, the preparation method of the plant essential oil formaldehyde remover is based on the plant essential oil formaldehyde remover described in any one of the first aspects above, so it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0057] In some specific embodiments, the first mixing and the second mixing can be carried out by mixing and stirring at room temperature or by mixing and stirring with the assistance of ultrasound, or other conventional mixing and stirring methods in the art.

[0058] As an implementation of an embodiment of the present application, the step of performing a third mixing of the first mixed material and the second mixed material to obtain the plant essential oil formaldehyde remover includes:

[0059] The first mixture is added to the second mixture for ultrasonic mixing and stirring to obtain the plant essential oil formaldehyde remover; wherein the working parameters of the ultrasonic mixing and stirring include: ultrasonic power of 950W to 1200W, stirring speed of 6000 to 8000rpm / min, and stirring time of 5 to 15 minutes.

[0060] The present application adopts ultrasonic mixing and high-speed stirring in the final stirring and mixing process of preparing the plant essential oil formaldehyde remover, which is conducive to forming a more uniform and stable mixing system.

[0061] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are intended only to illustrate the present application and are not intended to limit the scope of the present application. The experimental methods for which specific conditions are not specified in the following examples are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0062] Embodiments 1 to 7 provide a plant essential oil formaldehyde remover, which comprises the following components in parts by weight (unit: g):

[0063] 15-20 parts of plant essential oil, 1-8 parts of nano titanium dioxide, 1-5 parts of silane coupling agent, 1-5 parts of emulsifier and 30-60 parts of deionized water;

[0064] The plant essential oil is composed of camellia essential oil, lemon essential oil and bergamot essential oil;

[0065] The particle size of the nano titanium dioxide is 5-10 nm;

[0066] The silane coupling agent is composed of silane coupling agent KH550 and silane coupling agent A171 in a weight ratio of 2.5:1.5;

[0067] The emulsifier is composed of polyoxypropylene ether and polyvinyl alcohol in a weight ratio of 1:2.

[0068] The preparation method of the plant essential oil formaldehyde remover provided in Examples 1 to 7 comprises the following steps:

[0069] The nano titanium dioxide and the silane coupling agent are stirred and mixed at room temperature to obtain a first mixed material;

[0070] The plant essential oil, the emulsifier and the deionized water are stirred and mixed at room temperature to obtain a second mixture;

[0071] The first mixture is added into the second mixture for ultrasonic mixing and stirring to obtain the plant essential oil formaldehyde remover; wherein the working parameters of the ultrasonic mixing and stirring include: ultrasonic power of 1000W, stirring speed of 7000rpm / min, and stirring time of 10 minutes.

[0072] The specific dosage of each component in the plant essential oil formaldehyde remover provided in Examples 1 to 7 is shown in Table 1; wherein the Y value in Table 1 is the weight ratio of the plant essential oil and the nano titanium dioxide; the plant essential oils in Examples 1 to 3 are all composed of camellia essential oil, lemon essential oil and bergamot essential oil in a weight ratio of 1:1:1; the plant essential oils in Examples 4 to 7 are all composed of camellia essential oil, lemon essential oil and bergamot essential oil in a weight ratio of 7:1:2.

[0073] Table 1

[0074] serial number Essential Oils Nano Titanium Dioxide Silane coupling agent Emulsifier Deionized water Y Value Example 1 15 servings 2 servings 1.5 servings 2 servings 35 servings 7.5 Example 2 20 servings 6 servings 5 servings 5 servings 55 servings 3.3 Example 3 20 servings 8 servings 5 servings 5 servings 55 servings 2.5 Example 4 20 servings 8 servings 5 servings 5 servings 55 servings 2.5 Example 5 16 servings 6.4 servings 3.5 servings 3 servings 48 servings 2.5 Example 6 19 servings 7.6 servings 3.5 servings 3 servings 48 servings 2.5 Example 7 18 servings 5.4 servings 3.5 servings 3 servings 48 servings 2.5

[0075] Example 8

[0076] This embodiment provides a plant essential oil formaldehyde remover and a preparation method thereof, which is different from Example 7 only in that the particle size of nano titanium dioxide is 50-60 nm, the silane coupling agent is composed only of silane coupling agent KH550, and the emulsifier is composed only of polyvinyl alcohol; the remaining steps and parameters are the same.

[0077] Comparative Example 1

[0078] This example provides a plant essential oil formaldehyde remover and a preparation method thereof, which is different from Example 4 only in that the plant essential oil is composed of lemon essential oil and bergamot essential oil in a weight ratio of 1:2 (i.e., camellia essential oil is not added); the remaining steps and parameters are the same.

[0079] Comparative Example 2

[0080] This example provides a plant essential oil formaldehyde remover and a preparation method thereof, which is different from Example 4 only in that the plant essential oil is adjusted to 15 parts and the nano titanium dioxide is adjusted to 13 parts; the remaining steps and parameters are the same.

[0081] Test Case

[0082] In this example, 100 g of the plant essential oil formaldehyde remover prepared by the preparation methods described in Examples 1 to 8 and Comparative Examples 1 to 2 was used to test the formaldehyde removal efficacy.

[0083] Test method: An empty glass room (volume 30m 3 ) is the test room, and the indoor formaldehyde concentration in the front glass room is maintained at 0.4±0.02mg / m 3, and then use common atomization equipment to atomize the plant essential oil formaldehyde remover into the room, and turn off the atomization equipment after continuous purification for 1.5 hours; determine the formaldehyde concentration in the room after formaldehyde purification, the sampling method refers to GB / T18883-2002, the sampler is a dual-channel air sampler (DS-H2), the sampling flow rate is set to 200ml / min, the sampling time is set to 50min, the determination method adopts phenol reagent spectrophotometry, refer to GB / T18204.26-2000; the indoor formaldehyde standard refers to the indoor air quality standard GB / T18883-2002.

[0084] According to the calculation formula 1: formaldehyde removal rate (%) = formaldehyde removal amount / formaldehyde initial amount × 100%, the formaldehyde removal effect is obtained; according to the calculation formula 2: formaldehyde removal effect (mg / h) = formaldehyde removal amount / formaldehyde removal time, the formaldehyde removal efficiency is obtained. The test results are shown in Table 2.

[0085] Table 2

[0086]

[0087]

[0088] In summary, the embodiments of the present application provide a plant essential oil formaldehyde remover and a preparation method thereof, which improves the formaldehyde removal effect and removal efficiency through the synergy and cooperation between plant essential oil and nano-titanium dioxide, and has no secondary chemical pollution. It has the characteristics of being green and environmentally friendly, having good formaldehyde removal effect, and having fast removal speed.

[0089] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0090] In the present application, in the absence of any contrary description, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the description of the present specification, the terms "including", "comprising", etc. refer to "including but not limited to". In this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In this article, "and / or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In this article, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, "at least one of a, b, or c", or "at least one of a, b and c", can both mean: a, b, c, ab (i.e. a and b), ac, bc or abc, where a, b, c can be single or plural, respectively.

[0091] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A plant essential oil formaldehyde remover, characterized in that: The plant essential oil formaldehyde remover comprises the following components in parts by weight: 18 parts of plant essential oil, 5.4 parts of nano titanium dioxide, 3.5 parts of silane coupling agent, 3 parts of emulsifier and 48 parts of deionized water; The plant essential oil is composed of camellia essential oil, lemon essential oil and bergamot essential oil in a weight ratio of 7:1:2; The particle size of the nano titanium dioxide is 5-10 nm; The silane coupling agent is composed of silane coupling agent KH550 and silane coupling agent A171 in a weight ratio of 2.5:1.5; The emulsifier is composed of polyoxypropylene ether and polyvinyl alcohol in a weight ratio of 1:2; The preparation method of the plant essential oil formaldehyde remover comprises the following steps: The nano titanium dioxide and the silane coupling agent are stirred and mixed at room temperature to obtain a first mixed material; The plant essential oil, the emulsifier and the deionized water are stirred and mixed at room temperature to obtain a second mixture; The first mixture is added into the second mixture for ultrasonic mixing and stirring to obtain the plant essential oil formaldehyde remover; wherein the working parameters of the ultrasonic mixing and stirring include: ultrasonic power of 1000W, stirring speed of 7000rpm, and stirring time of 10 minutes.

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