CN107670463B

CN107670463B - It can sterilize, absorb formaldehyde and absorb the automobile air purifying agent of haze

Info

Publication number: CN107670463B
Application number: CN201710897830.2A
Authority: CN
Inventors: 沈平凡
Original assignee: Anhui Silver Lithium Biotechnology Development Co Ltd
Current assignee: Shen Pingfan
Priority date: 2017-09-28
Filing date: 2017-09-28
Publication date: 2018-11-13
Anticipated expiration: 2037-09-28
Also published as: CN107670463A

Abstract

The present invention provides one kind and can sterilize, and absorbs formaldehyde and absorbs the automobile air purifying agent of haze, the automobile air purifying agent prepares raw material, includes at least：Lemon extract, jasmine extract, tea tree extract, Flos Osmanthi Fragrantis extract, Artemisinin, eucalyptus extracts, vanilla extract, Extractives From Melia Azedarach L, fresh orange peel extract, modified Nano silver, water.

Description

Automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze

Technical Field

The invention relates to an air purifying agent, in particular to an automobile air purifying agent and a preparation method thereof.

Background

The existing air purifying agent for automobiles is a freshener prepared from essence, which utilizes the fragrance to cover the smell in the automobile and cannot solve the problem, or is a deodorant prepared from chemical raw materials, which can eliminate some toxic gas components but generates secondary pollution. Or the peculiar smell is removed only by physical adsorption, such as activated carbon adsorption, although secondary pollution is not generated, the adsorption effect is slow.

Disclosure of Invention

Aiming at the technical problems, the invention provides an automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, and the preparation raw materials of the automobile air purifying agent at least comprise the following components in parts by weight:

as one embodiment of the invention, the preparation raw materials of the automobile air purifying agent comprise the following components in parts by weight:

as an embodiment of the invention, the preparation raw material of the automobile air purifying agent also comprises 0.5-5 parts of ionic liquid.

As an embodiment of the present invention, the ionic liquid is 1-butylsulfonic acid-3-methylimidazolium hydrogen sulfate.

As an embodiment of the present invention, the raw materials for preparing the modified nano silver at least comprise: nano silver, modified chitosan and zinc polyacrylate.

As an embodiment of the invention, the preparation raw material of the automobile air purifying agent also comprises 0.1-1 part of formic acid.

In one embodiment of the present invention, the preparation method of the neem extract comprises the following steps:

the preparation method comprises the following steps of mixing cortex meliae, chinaberry seeds and chinaberry flowers in parts by weight of 1.2: 0.4: 0.7, mixing, cleaning, cutting, wetting with ammonia water, adding ethanol, refluxing for 1-3h, filtering while hot, and concentrating until no ethanol is available.

As an embodiment of the present invention, the method for extracting the artemisia apiacea extract comprises the following steps:

(1) taking 100g of sweet wormwood, cleaning, cutting up, adding 2000mL of absolute ethanol, soaking at 30 ℃ for 24h, filtering, collecting ethanol leachate, then carrying out reduced pressure distillation, and concentrating the ethanol leachate to 500 mL; adding 100mL of tetrahydrofuran, stirring for 30min, and standing at-5 ℃ for 12 hours; 0.01g of TiO was added₂Irradiating the powder for 10s under a low-pressure mercury lamp, stirring, filtering, collecting filtrate, concentrating the filtrate under reduced pressure to 100mL, adding distilled water at 1 ℃, collecting solid, and drying;

(2) placing the dried solid obtained in the step (1) into a conical flask, adding 10mL of ionic liquid 1, sealing the cap, placing into an ultrasonic instrument, and performing ultrasonic treatment for 2 hours at 60 ℃; centrifuging the extractive solution at 10,000r/min for 30min, collecting supernatant, concentrating, distilling, collecting solid, and vacuum drying for 12 hr to obtain herba Artemisiae Annuae extract.

The second aspect of the invention provides the automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, which is used for purifying air in an automobile.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

The invention provides an automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, which comprises the following preparation raw materials in parts by weight:

lemon extract:

the extraction method of the lemon extract comprises the following steps: the method comprises the following steps: (1) crushing peeled and seed-removed fresh lemons, and separating a solid phase and a liquid phase to obtain clear lemon liquid and lemon pulp paste; (2) freeze-drying the lemon liquid prepared in the step (1) to prepare a freeze-dried substance of a water-soluble substance; freeze-drying the obtained lemon meat paste, pulverizing into powder, extracting with ethyl acetate at-8 deg.C to-2 deg.C, and removing solvent from the extracted fat-soluble substance to obtain fat-soluble substance powder; (3) and (3) mixing the freeze-dried water-soluble substance obtained in the step (2) with the fat-soluble substance powder according to the mass ratio of 11:1 to 8:1 to obtain the lemon extract.

A jasmine extract:

the extraction method of the jasmine extract comprises the following steps of drying whole mirabilis jalapa in the shade, crushing the dried mirabilis jalapa in a plant crusher, sieving the crushed mirabilis jalapa with a 40-mesh sieve, adding 2-10 times of 95% ethanol, standing and extracting for 1-7 days at room temperature, stirring the mixture at ordinary times, filtering to obtain a leaching solution, adding 2-10 times of 95% ethanol into filter residues again, extracting for three times in the manner, combining the leaching solutions obtained in the three times, concentrating the leaching solutions under reduced pressure by using a rotary evaporator to obtain a black brown thick paste material, obtaining the mirabilis jalapa extract, drying the whole mirabilis jalapa in the shade, crushing the mixture by using the plant crusher, sieving the mixture with the 40-mesh sieve, adding 2-10 times of 95% ethanol, extracting under reflux for 5-15 hours, filtering to obtain.

Tea tree extract:

the tea plant extract of the present invention is commercially available.

Sweet osmanthus extract:

the sweet osmanthus extract is purchased from bioscience and technology limited of Xian Jindi.

And (3) sweet wormwood extract:

the extraction method of the sweet wormwood herb extract comprises the following steps:

Eucalyptus extract:

the preparation method of the eucalyptus extract comprises the following steps: weighing Eucalyptus globulus powder, adding ethanol, soaking for 2-3h, extracting with microwave for 2-3 times, filtering, and concentrating the filtrate under reduced pressure until no ethanol is obtained.

Vanilla extract:

vanilla, also known as vanilla, vanilla planifolia, is a perennial climbing vine, a large orchidaceous spice plant in typical tropical rainforests. The stem is thick or fleshy, each segment has 1 leaf and 1 aerial root. Big leaves, fleshy, with short stalks, sometimes degraded into scaly form. The raceme grows in the axilla of the leaf, and has a plurality of flowers and a plurality of flowers; flowers are usually large, twisted, often with 1 abscission between the ovary and the comforter; sepals are similar to petals, and are separated and unfolded; the lower edge of the lip often coincides with the edge of the core pillar, sometimes the coincident part reaches the whole length of the core pillar, so the lip is often trumpet-shaped, and the front non-coincident part is often enlarged, sometimes 3 cracks. The fruit is pod-like and fleshy, and does not crack or split. The seeds have thick episperm, and are usually black and wingless.

The vanilla pod contains vanillin (or vanilla), hydrocarbon compound, alcohol, carboxyl compound, ester, phenol, acid, phenol ether, heterocyclic compound, etc. 150-170 kinds of components. The seeds of vanilla contain:

1. volatile oil components: vanilla, vanillic acid, vanillyl alcohol, vanillyl ketone, cinnamic acid, cinnamyl alcohol, methyl cinnamate, myristic acid, anisic acid, anisyl alcohol, anisyl ester, guaiacol, 4-methyl guaiacol, p-hydroxybenzaldehyde;

2. the glycoside component includes glucovanillyl aldehyde glycoside, vanillic acid glucoside, o-methoxyphenyl- β -D-glucoside, p-tolyl- β -D-glucoside, phenethyl-2-glucoside, p-nitrophenylglucoside, etc.

The extract of vanilla also contains: ethyl vanillyl ether, methyl vanillyl ether, p-hydroxybenzyl ethyl ester and the like.

Vanilla is a rare tropical natural perfume, and the pod of the vanilla contains 15 to 17 components of vanillin (or vanillin), hydrocarbon compounds, alcohols, lipids, phenols, acids, heterocyclic compounds and the like, and amino acids essential to human bodies. The calamus has strong medical effects of tonifying stomach, stimulating appetite, removing flatulence, invigorating spleen and the like, and is a natural good medicine for nourishing and beautifying.

Vanilla contains more than 200 volatile substances, and in addition, many nonvolatile components which play a role in fragrance, wherein the most important fragrance component is vanillin. Vanillin has a chemical name of 3-methoxy-4-hydroxybenzaldehyde and is a white or pale yellow needle crystal. The aroma components such as vanillin are generated by hydrolyzing glucoside substances existing in the green vanilla beans by glucose oxidase.

The fermented and cured vanilla beans contain 1 to 2.5 percent of vanillin. It is generally believed that a 0.75% vanillin solution has the same aroma intensity as a vanilla extract containing 0.25% vanillin, and it is clear that vanilla has a much more concentrated aroma than vanillin.

The reason is that the auxiliary effect of hundreds of other components in the vanilla is never achieved by single vanillin, and the plump and greasy fragrance of the vanilla formed by synergistic effect cannot be simulated and blended by manpower so far. It has now been found that some trace substances are extremely important for vanilla aroma, mainly: anisaldehyde, benzaldehyde, heliotropin, vanillyl alcohol, vanillyl methyl ether, vanillyl ethyl ether, methyl anisate and the like.

different processing methods lead to differences in the composition and content of the aroma components of vanilla, but include, in general, alkanes (from heptane to docosane, etc.), alcohols (phenethyl alcohol, geraniol, anisol, vanillyl alcohol, isophytol, etc.), phenols (phenol, guaiacol, etc.), aldones (hexanal, α -heptanone, cannabinoids, p-hydroxybenzaldehyde, vanillin, syringaldehyde, etc.), esters (acetic acid, ethyl acetate), isobutyl phthalate, ethyl palmitate, ethyl linoleate, etc.), acids (acetic acid, isovaleric acid, n-hexanoic acid, octanoic acid, vanillic acid, linoleic acid, hexadecanoic acid, etc.), and small amounts of benzene, olefins, ethers, etc.

The vanilla extract was purchased from Fisher-El essence, Inc., of Jinjiang city.

And (3) extracting the chinaberry fruit:

melia azedarach is a tree plant of Melia of Meliaceae, also known as Qianling, fructus Toosendan, Tamarindus indica, and forest tree. The types of compounds found in neem include phenolic components, terpenes, steroids and neolignans. The height of the chinaberry is 10-20 m, the bark is dark brown, longitudinally cracked and the old branch is purple.

As an embodiment of the present invention, the melia azedarach extract is a mixture of melia azedarach bark, melia azedarach seed and melia azedarach flower in a weight ratio of 1.2: 0.5: 0.8 mixing and extracting.

The cortex Meliae is prepared by peeling dried root bark and bark of Melia azedarach in spring and autumn, sun drying, or removing coarse bark, sun drying, and is also called cortex Meliae bark, cortex Meliae branch bark, cortex Meliae root bark, and cortex Meliae root bark. The cortex Meliae contains triterpenes, flavonoids and phenolic compounds as main ingredients. The main triterpenes in the cortex meliae are: melia azedarach terpene ketone lactone, Melia azedarach terpene alcohol lactone, Melia azedarach terpene ketone, Melia azedarach terpene acid methyl ester, Neem balm A, Neem balm B, Fraxinellone, Kuyouning, Melia azedarach triol, etc.

In addition to triterpenoids, the bark of Melia azedarach contains several other compounds, such as: ditetradecyl ferulate, pentacosanyl ferulate, hexacosanyl ferulate, heptacosyl ferulate, octacosyl ferulate, sitosterol, stigmasterol and campesterol.

Kulianpi is bitter in taste and cold in nature, and enters liver, spleen and stomach meridians, and is a good drug for killing parasites and drying dampness. It is indicated for ascaris, also can expel pinworm, and treat wind-travelling heat-toxin, rubella and malignant sore, and also can clear heat and dry dampness.

the melia azedarach is a dry mature fruit of melia azedarach, which is bitter, cold and toxic in nature, and belongs to liver, spleen and stomach channels, the fruit contains melianone, melianol, melianolide, 7-eicosatriol, catechin, lupeol, β -sitosterol-3-O-glucoside, vanillin, cinnamic acid, azadirachtin, 1-cinnamoylmelianolone, meliandiol and melianol, the seed contains 6-acetoxy-11-hydroxy-7-keto-14 β -15-epoxymelianoxin-1, 5-diene-3-O-L-rhamnopyranoside, azadiracharin, 6-acetoxy-7-keto-14 β -15-epoxymelianolide-1, 5-diene-3-O-D-glucopyranoside, 6, 11-diacetyloxy-7-keto-14 β -15-epoxymelianolide, oleic acid, linoleic acid, oleic.

Neem flower is a dried flower of neem, which contains many components, such as: octane, 2, 6-dimethylheptane, 2, 5-dimethylheptane, 2-methylpropylcyclopentane, 2-methyloctane, hexanal, 3-methyloctane, 2,2, 4-trimethylheptane, 2,2, 6-trimethylheptane, 3-dimethyloctane, 2,3, 6-trimethylheptane, 2,2,2, 6-tetramethylheptane, 2,2,4,6, 6-pentamethylheptane, 2,5, 6-trimethyloctane, 2,2, 7-trimethylnonane, 2,2, 6-trimethyloctane, 1,2, 3-trimethylbenzene, 2, 6-dimethyloctane, 2,2,11, 11-tetramethyldodecane, 3, 7-dimethylnonane, 2, 6-dimethylundecane, 2,2, 4-trimethyldecane, 3, 6-dimethylundecane, 2, 7-dimethylundecane, 2, 9-dimethylundecane, 2, 3-trimethylnonane, 2, 8-dimethylundecane, 2,8, 8-trimethylundecane, nonanal, tetradecane, 2, 8-trimethylundecane, cycloundecane, 1, 4-dimethoxybenzene, decaaldehyde, hexadecane, caryophyllene, 1S,2S,5R-1,4, 4-trimethyltricyclo, dodecene, pentadecane, 3,7, 11-trimethyl-1, 6, 10-dodecatrien-3-ol, nerolidol, trumpet-thenol, acetic acid (3,7, 11-trimethyl-1, 6,10-) dodecatrienyl alcohol ester, 6,10, 14-trimethyl-2-pentadecanone, 2-methyloctadecane, diisobutyl o-dibenzoate, nonadecane, 2,6, 10-trimethyltetradecane, hexadecanoic acid, 2-methyleicosane, 3,7,11, 15-tetramethyl-2-hexadecenol, eicosane, butylhexadecanoate, 3,7,11, 15-tetramethyl-2-hexadecenol, eucalyptol, heneicosane, tetracosane, pentacosane, isobutylhexadecanoate, cyclohexylhexadecanoate, 2, 21-dimethyldocosane, di (2-ethyl) hexyl adipate, 9-butyldocosane and octacosane.

In the invention, the specific preparation method of the melia azedarach extract comprises the following steps: the preparation method comprises the following steps of mixing cortex meliae, chinaberry seeds and chinaberry flowers in parts by weight of 1.2: 0.4: 0.7, mixing, cleaning, cutting, wetting with ammonia water, adding ethanol, refluxing for 1-3h, filtering while hot, and concentrating until no ethanol is available.

Fresh orange peel extract:

the fresh pericarpium Citri Tangerinae contains monocyclic terpene of limonene (methyl propenyl cyclohexene), has boiling point of 175.5-176 deg.C, has fragrance of citrus (lemon) fruit, is insoluble in water, and can be mixed with water at any ratio after adding activator.

The pericarpium Citri Tangerinae contains abundant vitamin C and essential oil, and the pericarpium Citri Tangerinae contains volatile oil, which mainly contains limonene, citral, and pericarpium Citri Tangerinae ketone, hesperidin, inositol, vitamin B1, etc. Has mild irritation to digestive tract, and is beneficial for discharge of gastrointestinal pneumatosis. Promoting secretion of gastric juice; the bronchi are dilated. The orange peel porridge has the effects of regulating qi, resolving phlegm, strengthening stomach and nourishing stomach. Reducing blood lipid, increasing blood pressure or treating acute mastitis.

More than 30 substances are currently separated from orange peel, among which are mainly: flavonoids, monoterpenes, coumarins, carotenoids, propanoids, acridone, glyceroglycolipids, and the like.

Flavonoid: there are three types of flavonoids contained in citrus fruits: type I is a general flavonoid represented by rutin; type II is flavanone specific to citrus fruits such as hesperidin and naringin; type III is a special flavonoid containing polymethoxyl group such as citrus flavone which has not been found in other vegetables and fruits but is possessed only by citrus.

Carotenoid: it is known that many vegetables and fruits contain carotenoids, which are components having an important role in human health. The research on the physiological function and mechanism of carotenoid is developed rapidly in recent years, and China also develops some health-care foods by utilizing the substances and realizes industrial production.

Coumarin: the coumarin contained in the citrus is a well-established anti-cancer substance by scientists at present. Research results show that the anticancer function forming pathways of the coumarin mainly comprise two pathways: firstly, the coumarin detoxifies the cancer substances through the action of detoxification enzymes; secondly, the activation of antagonizing and inhibiting the metabolism of the cancer substance. These two effects produce an inhibitory effect mainly in the initial stage of cancer.

Monoterpene and triterpene citrus contains a large amount of terpenoids represented by limonene. Terpenes are substances constituting the unique fragrance of citrus, and have the effect of calming the central nerves of humans.

Limonin: limonin is a bitter component of orange peel.

In the invention, the preparation method of the fresh orange peel extract comprises the following steps: blasting fresh pericarpium Citri Tangerinae, pulverizing to 100-150 mesh, mixing with 2-mercaptobenzothiazole, and extracting with ethanol as solvent.

Modified nano silver:

As an embodiment of the present invention, the raw materials for preparing the modified nano silver further comprise: hyperbranched ionic liquid

The preparation method of the hyperbranched ionic liquid comprises the following steps:

1. uniformly mixing 50.0mmol of L-lysine, 30.0mmol of L-phenylalanine, 70.0mmol of L-histidine, 40.0mmol of L-glutamine and 90.0mmol of L-arginine in a mortar, transferring the white solid mixture into a 250ml three-neck flask, and heating the reaction mixture to 140 ℃ for reacting for 60 hours under the conditions of argon protection and mechanical stirring to obtain a yellow solid; 200ml of methanol was added and most of the solids were dissolved by sonication. Filtering, dropwise adding tetrahydrofuran into the filtrate, and carrying out fractional precipitation to obtain the hyperbranched copolymer.

2. Dissolving the hyperbranched copolymer in water, adding an anion salt, stirring and reacting at 20-30 ℃ for 15-24 hours, pouring the reaction solution into an alcohol solvent after the reaction is finished to separate out a solid product, and performing suction filtration and vacuum drying on a filter cake to obtain the hyperbranched ionic liquid.

Modified chitosan: the modified chitosan is quaternary ammonium salt modified chitosan, and the specific preparation method is as follows:

adding chitosan and 2% acetic acid solution by mass into a reactor, stirring, adding 3- (2, 3-epoxypropoxy) propyl trimethoxy silane/isopropanol mixed solution after all solids are dissolved, heating to 60 ℃, carrying out heat preservation reaction for 4 hours, then adding 3-glycidyl ether oxypropyl methyl diethoxy silane/isopropanol mixed solution, carrying out heat preservation reaction for 3 hours at 60 ℃, carrying out reduced pressure concentration to 1/3 of the volume of the original solution after the reaction is finished, adding deionized water, stirring for 1 hour, adjusting the pH to be neutral by using 2% sodium hydroxide solution by mass, stirring for 2 hours, filtering, and carrying out reduced pressure drying for 12 hours at 60 ℃ to obtain modified chitosan;

wherein the weight ratio of the chitosan to the acetic acid solution with the mass fraction of 2% is 1: 20; the weight ratio of the 3- (2, 3-epoxypropoxy) propyl trimethoxy silane to the isopropanol in the 3- (2, 3-epoxypropoxy) propyl trimethoxy silane/isopropanol mixed solution is 1: 2; the weight ratio of the 3-glycidyloxypropylmethyldiethoxysilane to the isopropanol in the 3-glycidyloxypropylmethyldiethoxysilane/isopropanol mixed solution is 1: 2; the weight ratio of the chitosan to the 3- (2, 3-epoxypropoxy) propyl trimethoxy silane to the 3-glycidyl ether oxy propyl methyl diethoxy silane is 1: 0.3: 0.2; the weight ratio of the chitosan to the deionized water is 1: 20.

in the invention, the preparation method of the zinc polyacrylate comprises the following steps:

adding 1 weight part of zinc chloride solution into 2 weight parts of acrylic acid under stirring, adjusting the pH value of the reaction solution to 9 by ammonia water, adding 0.1 part of ammonium persulfate with 0.5g/ml and 0.1 part of sodium bisulfite solution with 0.5g/ml after stirring uniformly, placing in a water bath at 60 ℃ for reacting for 4 hours to obtain light yellow gel, vacuumizing and drying in a vacuum oven at 60 ℃, and crushing.

The preparation method of the modified nano silver comprises the following steps:

(1) dispersing the zinc polyacrylate and the modified chitosan in a mixed solution of water and ethanol, and preparing a 50 wt% zinc polyacrylate/modified chitosan solution under ultrasonic stirring;

dissolving silver nitrate in deionized water to prepare a silver nitrate solution with the concentration of 0.1M;

(2) adding 100 mu L of 0.1M silver nitrate into 40mL of deionized water, then weighing 40mg of polyvinylpyrrolidone (PVP-K30), adding, uniformly stirring to obtain a mixed solution, adding 25mL of the zinc polyacrylate/modified chitosan solution obtained in the step (1), and uniformly stirring to obtain a mixed solution;

(3) weighing 2mg of sodium borohydride, dissolving the sodium borohydride in 2mL of deionized water, rapidly adding the sodium borohydride into the mixed solution obtained in the step (2) under vigorous stirring, and reacting at room temperature for 30min to obtain modified nano-silver sol;

(4) and (3) mixing 2 parts by weight of the modified nano-silver sol prepared in the step (3) and 1 part by weight of hyperbranched ionic liquid, adding the mixture into a silver nitrate solution (0.5mM), adding ammonia water (with the mass concentration of 25%) until the pH value is 9, reacting at room temperature for 12 hours in 400 mu L of an acrylic acid solution (with the concentration of 0.1M), centrifuging, and washing to obtain the modified nano-silver.

The second aspect of the invention provides a preparation method of the automobile air purifying agent, which comprises the following specific steps: weighing the preparation raw materials according to the weight parts, mixing and stirring the plant extracts and deionized water for 12 hours, adding the modified nano-silver under vigorous stirring, continuing stirring for 0.5 hour, heating to 30 ℃, adding the rest raw materials, stirring uniformly, and cooling to room temperature.

The mechanism is explained as follows: the novel hyperbranched ionic liquid provided by the invention participates in the preparation of the modified nano-silver, so that the nano-silver can be highly dispersed, the sterilization performance of the nano-silver can be exerted, and the purification performance of the automobile air purifying agent can be improved.

Embodiment 1: the embodiment provides an automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, and the preparation raw materials of the automobile air purifying agent at least comprise the following components in parts by weight:

embodiment 2. the automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, according to embodiment 1, is prepared from the following raw materials in parts by weight:

embodiment 3. the automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze of embodiment 1 is prepared from the following raw materials in parts by weight:

embodiment 4. the sterilizable, formaldehyde-absorbing and haze-absorbing automobile air purification agent according to embodiment 1, which is prepared from raw materials further comprising 0.5 to 5 parts of an ionic liquid.

Embodiment 5. the automobile haze-absorbing air purifying agent capable of sterilizing and absorbing formaldehyde of embodiment 4, wherein the ionic liquid is 1-butylsulfonic acid-3-methylimidazolium hydrogen sulfate.

Embodiment 6. the automobile haze absorption air purifier capable of sterilizing and absorbing formaldehyde of embodiment 1, wherein the modified nano silver is prepared from at least: nano silver, modified chitosan and zinc polyacrylate.

Embodiment 7. the sterilizable, formaldehyde-absorbing and haze-absorbing automobile air-purifying agent according to embodiment 1, which further comprises 0.1 to 1 part of formic acid as a raw material for preparing the automobile air-purifying agent.

Embodiment 8. the automobile air-purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze according to embodiment 1 is prepared by the following steps:

grinding 100g of chinaberry into powder, adding 500mL of 95 vol% ethanol, heating and refluxing for 6h, cooling and filtering, evaporating the filtrate by using a rotary evaporator, adding 50mL of 30 wt% hydrogen peroxide, standing for 3h, adding 20mL of 0.1 wt% HCl, stirring uniformly and filtering, adding 70mL of chloroform into the filtrate, separating, collecting the upper layer, adding saturated NaHCO into the separated upper layer liquid₃The solution was brought to pH 10, extracted with 20mL ethyl acetate and the ethyl acetate extract evaporated to dryness to give a solid, neem extract.

Embodiment 9. the automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze of embodiment 1 is extracted from the sweet wormwood herb extract by the following method:

(2) placing the dried solid obtained in the step (1) into a conical flask, adding 10mL of ionic liquid 1, sealing the cap, placing into an ultrasonic instrument, and performing ultrasonic treatment for 2 hours at 60 ℃; centrifuging the extractive solution at 10,000r/min for 30min, collecting supernatant, concentrating, distilling, collecting solid, and vacuum drying for 12 hr to obtain Hamamelis virginiana extract.

Embodiment 10 the sterilizable, formaldehyde-absorbing and haze-absorbing automobile air-purifying agent according to any one of embodiments 1 to 9, which is used for purifying air in an automobile.

The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.

In addition, the starting materials used are commercially available, unless otherwise specified, and the parts used for the following materials are parts by weight.

Example 1: the embodiment provides an automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze, which is characterized in that the automobile air purifying agent comprises the following raw materials in parts by weight:

wherein,

the extraction method of the lemon extract comprises the following steps: the method comprises the following steps: (1) crushing peeled and seed-removed fresh lemons, and separating a solid phase and a liquid phase to obtain clear lemon liquid and lemon pulp paste; (2) freeze-drying the lemon liquid prepared in the step (1) to prepare a freeze-dried substance of a water-soluble substance; freeze-drying the obtained lemon meat paste, pulverizing into powder, extracting with ethyl acetate at-8 deg.C to-2 deg.C, and removing solvent from the extracted fat-soluble substance to obtain fat-soluble substance powder; (3) and (3) mixing the freeze-dried water-soluble substance obtained in the step (2) with the fat-soluble substance powder according to the mass ratio of 10:1 to obtain the lemon extract.

the jasmine extract is prepared by the steps of drying purple jasmine in the shade, crushing the purple jasmine by using a plant crusher, sieving the dried purple jasmine through a 40-mesh sieve, adding 5 times of 95% ethanol, standing and extracting for 6 days at room temperature, stirring the mixture at normal temperature, filtering to obtain a leaching solution, adding 5 times of 95% ethanol into filter residues again, extracting the filter residues for three times, combining the three leaching solutions, concentrating the three leaching solutions under reduced pressure by using a rotary evaporator to obtain a black brown thick paste to obtain the purple jasmine extract, drying the purple jasmine in the shade, crushing the dried purple jasmine by using the plant crusher, sieving the dried purple jasmine through the 40-mesh sieve, adding 5 times of 95% ethanol, extracting for 10 hours under reflux, filtering to obtain a reflux extracting solution, and concentrating the reflux extracting solution under reduced pressure by using the rotary evaporator to obtain the black brown thick paste to.

Tea tree extract: the tea plant extract was purchased from sienna qing vine biotechnology limited.

Sweet osmanthus extract: the osmanthus fragrans extract in this example was purchased from bioscience and technology ltd, west ann jin.

And (3) sweet wormwood extract: (1) taking 100g of sweet wormwood, cleaning, cutting up, adding 2000mL of absolute ethanol, soaking at 30 ℃ for 24h, filtering, collecting ethanol leachate, then carrying out reduced pressure distillation, and concentrating the ethanol leachate to 500 mL; adding 100mL of tetrahydrofuran, stirring for 30min, and standing at-5 ℃ for 12 hours; 0.01g of TiO was added₂Irradiating the powder for 10s under a low-pressure mercury lamp, stirring, filtering, collecting filtrate, concentrating the filtrate under reduced pressure to 100mL, adding distilled water at 1 ℃, collecting solid, and drying;

Eucalyptus extract: the preparation method of the eucalyptus extract in this example is as follows: weighing Eucalyptus globulus powder, adding ethanol, soaking for 2-3h, extracting with microwave for 2-3 times, filtering, and concentrating the filtrate under reduced pressure until no ethanol is obtained.

Vanilla extract: the vanilla extract described in this example was purchased from Fisher-El essence, Inc., of Jinjiang city.

And (3) extracting the chinaberry fruit: mixing 1.2 parts of cortex Meliae, 0.4 part of fructus Toosendan and 0.7 part of flower of Melia azedarach, cleaning, cutting, moistening with ammonia water, adding 10 parts of ethanol, refluxing for 2 hr, filtering while hot, and concentrating until no ethanol is present.

Fresh orange peel extract: the preparation method of the fresh orange peel extract comprises the following steps: blasting 5 parts of fresh orange peel, crushing to 100-150 meshes, mixing with 2-mercaptobenzothiazole, extracting with 20 parts of ethanol as a solvent, refluxing for 2 hours, filtering while hot, and concentrating until no ethanol exists, thus obtaining the orange peel.

Modified nano silver: the modified nano silver is prepared from the following raw materials: nano-silver, modified chitosan, zinc polyacrylate and hyperbranched ionic liquid.

2. Dissolving the hyperbranched copolymer in water, adding sodium tetrafluoroborate, stirring and reacting at 20-30 ℃ for 18 hours, pouring the reaction liquid into ethanol after the reaction is finished to separate out a solid product, and performing suction filtration and vacuum drying on a filter cake to obtain the hyperbranched ionic liquid.

Water: deionized water

Ionic liquid: 1-Butylsulfonic acid-3-methylimidazolium hydrogen sulfate

The second aspect of the present embodiment provides a method for preparing the automobile air purifying agent, which comprises the following specific steps: weighing the preparation raw materials according to the weight parts, mixing and stirring the plant extracts and deionized water for 12 hours, adding the modified nano-silver under vigorous stirring, continuing stirring for 0.5 hour, heating to 30 ℃, adding the rest raw materials, stirring uniformly, and cooling to room temperature.

Example 2: the difference from the embodiment 1 is that the embodiment provides a bactericidal, formaldehyde-absorbing and haze-absorbing automobile air purifying agent, which is characterized in that the preparation raw material of the automobile air purifying agent comprises the following components in parts by weight:

example 3: the difference from the embodiment 1 is that the embodiment provides a bactericidal, formaldehyde-absorbing and haze-absorbing automobile air purifying agent, which is characterized in that the preparation raw material of the automobile air purifying agent comprises the following components in parts by weight:

example 4: the difference from example 1 is that the lemon extract is commercially available and purchased from Lanolin biologicals of Hunan.

Example 5: the difference from example 1 is that the jasmine extract is commercially available from Huaxin Natural plants, Inc. of Jian city.

Example 6: the difference from example 1 is that the extraction method of the artemisia apiacea extract is as follows: (1) taking 100g of sweet wormwood, cleaning, cutting up, adding 2000mL of absolute ethyl alcohol, soaking at 30 ℃ for 24h, filtering, collecting an ethanol leaching solution, then distilling under reduced pressure, concentrating the ethanol leaching solution to 100mL, adding distilled water at 1 ℃, collecting a solid, and drying;

Example 7: the difference from example 1 is that the neem extract is commercially available from Poa Biotech, Inc. of Lanzhou.

Example 8: the difference from the embodiment 1 is that the preparation method of the fresh orange peel extract comprises the following steps: blasting 5 parts of fresh orange peel, crushing to 100-150 meshes, extracting with 20 parts of ethanol as a solvent, refluxing for 2 hours, filtering while hot, and concentrating until no ethanol exists.

Example 9: the difference from example 1 is that the modified nano-silver is ordinary nano-silver and is purchased from Guangzhou Bopeaker engineering and technology Co.

Example 10: the difference from example 1 is that the modified chitosan was replaced with chitosan.

Example 11: the difference from example 1 is that the zinc polyacrylate is replaced by zinc acrylate.

Example 12: the difference from example 1 is that the raw material for preparing the modified nano silver does not contain the hyperbranched ionic liquid.

Example 13: the difference from example 1 is that the preparation method of the hyperbranched ionic liquid is as follows:

1. uniformly mixing 50.0mmol of L-lysine, 70.0mmol of L-histidine, 40.0mmol of L-glutamine and 90.0mmol of L-arginine in a mortar, transferring the white solid mixture into a 250ml three-neck flask, and heating the reaction mixture to 140 ℃ under the protection of argon and mechanical stirring for 60 hours to react to obtain yellow solid; 200ml of methanol was added and most of the solids were dissolved by sonication. Filtering, dropwise adding tetrahydrofuran into the filtrate, and carrying out fractional precipitation to obtain the hyperbranched copolymer.

Example 14: the difference from example 1 is that the raw materials for preparing the modified nano silver do not contain modified chitosan and zinc polyacrylate.

Example 15: the difference from example 1 is that the raw materials for preparing the automobile air purifier do not contain ionic liquid.

Example 16: the difference from example 1 is that the raw material for preparing the automobile air purifier does not contain formic acid.

Comparative example 1: absorbing formaldehyde by adopting activated carbon bag

Comparative example 2: off-flavors were absorbed using commercially available chemical deodorants.

The automobile compartment is closed, and test comparison is carried out after 48 hours.

And (3) testing:

1. test of antibacterial Effect

The antibacterial effect of the obtained fiber was measured according to Japanese Industrial Standard JIS L1902: 2002 of textile antibacterial test method and antibacterial Effect, and the species used were Staphylococcus aureus and Escherichia coli, which are represented by A bacterium and B bacterium, respectively. According to the antibacterial standard of the Japanese fiber product New function evaluation Association (JAFET), the antibacterial value of more than 2.2 indicates that the test sample has the antibacterial effect, and the bactericidal value of more than zero indicates that the test sample has the bactericidal effect. The test results are shown in Table 1.

2. Formaldehyde removal test

And (4) purchasing a new car, sealing the car compartment, and carrying out test comparison after 48 hours. The test results are shown in Table 2.

3. Haze removal test

The haze performance test is carried out in 2016 in the winter of Beijing, the automobile air purifying agent is placed in one room in three rings of Beijing, and 6: 00 open use, 18 evening: 00, comparative example 3 is the outdoor haze test result. The test results are shown in Table 3.

4. Stability Performance test

The product of the invention is respectively placed in ice water and hot water with the temperature of 50 ℃, and after 120 hours, the product is taken out to be tested for 1-3, and the comprehensive performance change rate is comprehensively judged. The comprehensive performance change rate is (antibacterial effect test performance change rate + formaldehyde removal test performance change rate + haze removal test performance change rate)/3. The test results are shown in Table 4.

Antibacterial effect test the rate of change of performance ═ (initial performance test data-post performance test data)/initial performance test data 100%.

The original performance test data are the performance data of tables 1-3, and the later performance test data are the test data of tests 1-3 which are respectively carried out after the product is placed in ice water/hot water.

Removal of formaldehyde test performance change rate (original performance test data-post performance test data)/original performance test data 100%.

Haze removal test performance change rate (original performance test data-post performance test data)/original performance test data 100%.

TABLE 1 Performance test Table

TABLE 2 Performance test Table

TABLE 3 Performance test Table

	PM2.5(μg/m³)	PM2.5(μg/m³)	Sulfur dioxide (. mu.g/m)³)	Nitrogen oxides (. mu.g/m)³)
					Example 1	11.02	15.31	25.18	23.15
Example 2	11.04	15.42	25.86	23.87
					Practice ofExample 3	11.05	15.43	25.91	23.92
Example 4	12.31	16.03	27.03	24.56
					Example 5	14.18	17.89	28.31	25.76
Example 6	17.53	20.15	31.75	29.17
					Example 7	15.25	18.93	29.56	27.18
Example 8	16.75	19.75	30.13	28.15
					Example 9	31.56	37.89	44.86	42.86
Example 10	26.55	33.56	40.26	37.02
					Example 11	24.05	32.45	38.45	35.86
Example 12	29.15	36.48	42.45	40.86
					Example 13	22.85	30.85	37.86	34.85
Example 14	27.86	34.59	41.63	39.15
					Example 15	20.15	27.36	35.75	32.85
Example 16	18.63	25.86	33.75	30.85
					Comparative example 3	326.31	457.35	646.31	468.35

TABLE 4 Performance test Table

	Overall rate of change of properties (ice water)%	Rate of change of overall properties (50 ℃ hot water)%
			Example 1	0.5	0.8
Example 2	0.6	0.8
			Example 3	0.6	0.9
Example 4	1.3	1.5
			Example 5	2.8	3.0
Example 6	11.3	13.4
			Example 7	3.5	5.8
Example 8	4.2	7.3
			Example 9	59.3	69.3
Example 10	27.8	30.2
			Example 11	24.3	28.3
Example 12	48.3	50.9
			Example 13	21.3	25.8
Example 14	29.7	34.4
			Example 15	17.3	19.4
Example 16	13.2	16.9

The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.

Claims

1. The automobile air purifying agent capable of sterilizing, absorbing formaldehyde and absorbing haze is characterized by at least comprising the following raw materials in parts by weight:

the ionic liquid is 1-butyl sulfonic acid-3-methylimidazole bisulfate;

the preparation method of the melia azedarach extract comprises the following steps:

the preparation method comprises the following steps of mixing cortex meliae, chinaberry seeds and chinaberry flowers in parts by weight of 1.2: 0.4: 0.7, blending, cleaning, cutting, wetting with ammonia water, adding ethanol, refluxing for 1-3h, filtering while hot, and concentrating until no ethanol exists to obtain the final product;

(2) placing the dried solid obtained in the step (1) into a conical flask, adding 10mL of ionic liquid 1, sealing the cap, placing into an ultrasonic instrument, and performing ultrasonic treatment for 2 hours at 60 ℃; centrifuging the extractive solution at 10,000r/min for 30min, collecting supernatant, concentrating, distilling, collecting solid, and vacuum drying for 12 hr to obtain herba Artemisiae Annuae extract;

the preparation method of the fresh orange peel extract comprises the following steps: blasting 5 parts of fresh orange peel, crushing to 100-150 meshes, mixing with 2-mercaptobenzothiazole, extracting with 20 parts of ethanol as a solvent, refluxing for 2 hours, filtering while hot, and concentrating until no ethanol exists to obtain the orange peel extract;

the modified nano silver is prepared from the following raw materials: nano silver, modified chitosan, zinc polyacrylate and hyperbranched ionic liquid;

s01, uniformly mixing 50.0mmol of L-lysine, 30.0mmol of L-phenylalanine, 70.0mmol of L-histidine, 40.0mmol of L-glutamine and 90.0mmol of L-arginine in a mortar, transferring the white solid mixture into a 250ml three-neck flask, and heating the reaction mixture to 140 ℃ for reacting for 60 hours under the conditions of argon protection and mechanical stirring to obtain a yellow solid; adding 200ml of methanol, and ultrasonically dissolving most of the solid; filtering, dropwise adding tetrahydrofuran into the filtrate, and carrying out fractional precipitation to obtain a hyperbranched copolymer;

s02, dissolving the hyperbranched copolymer in water, adding sodium tetrafluoroborate, stirring and reacting at 20-30 ℃ for 18 hours, pouring a reaction solution into ethanol after the reaction is finished to separate out a solid product, performing suction filtration on the obtained mixed solution, and performing vacuum drying on a filter cake to obtain a hyperbranched ionic liquid;

the modified chitosan is quaternary ammonium salt modified chitosan, and the specific preparation method comprises the following steps:

the preparation method of the zinc polyacrylate comprises the following steps:

adding 1 weight part of zinc chloride solution into 2 weight parts of acrylic acid under stirring, adjusting the pH value of a reaction solution to 9 by ammonia water, adding 0.1 part of ammonium persulfate with 0.5g/ml and 0.1 part of sodium bisulfite solution with 0.5g/ml after stirring uniformly, placing in a water bath at 60 ℃ for reacting for 4 hours to obtain light yellow gel, vacuumizing and drying in a vacuum oven at 60 ℃, and crushing;

2. The sterilizable, formaldehyde-absorbing and haze-absorbing automobile air-purifying agent of any one of claims 1, which is used for purifying air in an automobile.