CN108620091A - A kind of preparation method of vehicle-use air purification agent - Google Patents

A kind of preparation method of vehicle-use air purification agent Download PDF

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Publication number
CN108620091A
CN108620091A CN201810423125.3A CN201810423125A CN108620091A CN 108620091 A CN108620091 A CN 108620091A CN 201810423125 A CN201810423125 A CN 201810423125A CN 108620091 A CN108620091 A CN 108620091A
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vehicle
air purification
use air
purification agent
preparation
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郭常青
吴学军
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Anhui Leking Environment Technology Co Ltd
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Anhui Leking Environment Technology Co Ltd
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Priority to CN201810423125.3A priority Critical patent/CN108620091A/en
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    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract

The present invention relates to air purifying preparation technical fields, and in particular to a kind of preparation method of vehicle-use air purification agent, the preparation method of the vehicle-use air purification agent include the following steps：(1) organic titanate and organosilicon acid esters are uniformly mixed in alcoholic solvent, transition metal salt is then added, obtains mixed system A；(2) by polyhexamethylene adipamide and foaming agent in alcoholic solvent after mixing, carry out electrostatic spinning, obtain poly fibre, then calcine poly fibre, obtain porous carbon fiber；(3) porous carbon fiber, surfactant and silane coupling agent are added in mixed system A, are then sealed thermal response to get to vehicle-use air purification agent.The vehicle-use air purification agent of the present invention efficiently, quickly can carry out absorption and catalytic degradation to indoor VOCs, the feature for having removal rate high, small to environmental hazard.

Description

A kind of preparation method of vehicle-use air purification agent
Technical field
The present invention relates to formaldehyde purifying agent technical fields, and in particular to a kind of preparation method of vehicle-use air purification agent.
Background technology
It is easy to cause acute poisoning, less serious case that can go out when VOCs (volatile organic compounds) excessive concentration in room air Now headache, dizzy, cough, Nausea and vomiting are in dead drunk liquor-saturated shape；Severe one will appear hepatotoxicity or even go into a coma quickly, and some can also energy It is in peril of one's life.It hangs up one's hat in the interior that VOCs pollutes, slow poisoning, damage liver and nervous system can be caused to cause entirely Body inability, drowsiness, pruitus etc..Some can also can cause endocrine disorder, influence sexual function；Benzene and dimethylbenzene can also damage System, so that cause leukaemia.Oneself is caused through being determined as carcinogenic by the World Health Organization and causing deformed material by VOCs at present The health problem that indoor environmental pollution is brought has become the new hot spot that the public attractes attention.
With the development of the social economy, automobile has become common walking-replacing tool, but containing big in automobile indoor air The reason of VOCs of amount, generation VOCs is mainly in interior plastic parts containing a large amount of volatilizable pollutant.At present frequently with The method of car room irritative gas of going out is to open the window, and by noxious gas emission to air, and works as environment temperature mistake When high or too low, this discharging modes are just restricted, or substance of the purchase with adsorptivity adsorbs pernicious gas, but this The substance of class adsorptivity mostly can only adsorb indoor pollutant, not carry out degradation treatment to it, to will produce Secondary pollution still has larger harm to human body.
Invention content
It is of the existing technology the purpose of the invention is to overcome the problems, such as, a kind of preparation of vehicle-use air purification agent is provided Method, the vehicle-use air purification agent efficiently, quickly can carry out absorption and catalytic degradation to indoor VOCs, have removal rate Height, the feature small to environmental hazard.
To achieve the goals above, the present invention provides a kind of preparation method of vehicle-use air purification agent, includes the following steps：
(1) by organic titanate and organosilicon acid esters in alcoholic solvent be uniformly mixed, stir to get mixed sols, then to Transition metal salt is added in mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and foaming agent in alcoholic solvent after mixing, carry out electrostatic spinning, obtain gathering oneself Two acyl hexamethylene diamine fibers, then by poly fibre in atmosphere of inert gases at 300~500 DEG C calcining 5~ 12h obtains porous carbon fiber；
(3) porous carbon fiber, surfactant and silane coupling agent are added in mixed system A, then 120~160 Sealing 3~8h of reaction is to get to vehicle-use air purification agent at DEG C.
Through the above technical solutions, the present invention carries out electrostatic spinning and forges after mixing polyhexamethylene adipamide with foaming agent It burns, obtains porous carbon fiber, then by porous carbon fiber and mixing containing organic titanate, organosilicon acid esters and transition metal salt The progress of zoarium system is compound, and organosilicon acid esters, organic titanate and transition metal ions can be made to enter the hole of porous carbon fiber In, closing thermal response is then carried out, the Si-M-TiO with catalytic performance is generated in the hole of porous carbon fiber2(transition Metal and silicon are total to modifying titanium dioxide), Si-M-TiO2With higher catalytic activity, and avoid TiO2Poorly conductive and light The shortcomings that raw electrons and holes are easy recombination, improves the light utilization efficiency and catalytic efficiency of catalyst.The Vehicular air of the present invention Cleanser contains abundant pore structure, and specific surface area is high, can adsorb pernicious gas in environment, realizes VOCs enrichments, divides Solution preocess is completed in situ, improves VOCs processing speeds.
Specific implementation mode
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more New numberical range, these numberical ranges should be considered as specific open herein.
The present invention provides a kind of vehicle-use air purification agent, is made of the substance of following parts by weight：3~12 weight of organic titanate Measure part, 0.1~1 parts by weight of organosilicon acid esters, 0.1~0.5 parts by weight of transition metal salt, 3~4 parts by weight of silane coupling agent, hair 1~5 parts by weight of infusion, 80~150 parts by weight of polyhexamethylene adipamide, 1~2 parts by weight of surfactant, alcoholic solvent 10~50 Parts by weight.Under optimum condition, the vehicle-use air purification agent is made of the substance of following parts by weight：6~10 weight of organic titanate Measure part, 0.2~0.6 parts by weight of organosilicon acid esters, 0.2~0.3 parts by weight of transition metal salt, 3~4 parts by weight of silane coupling agent, 2~3 parts by weight of foaming agent, 100~120 parts by weight of polyhexamethylene adipamide, 1~2 parts by weight of surfactant, alcoholic solvent 40~ 50 parts by weight.
The present invention also provides a kind of preparation methods of the vehicle-use air purification agent, include the following steps：
(1) by organic titanate and organosilicon acid esters in alcoholic solvent be uniformly mixed, stir to get mixed sols, then to Transition metal salt is added in mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and foaming agent in alcoholic solvent after mixing, carry out electrostatic spinning, obtain gathering oneself Two acyl hexamethylene diamine fibers, then by poly fibre in atmosphere of inert gases at 300~500 DEG C calcining 5~ 12h obtains porous carbon fiber；
(3) porous carbon fiber, surfactant and silane coupling agent are added in mixed system A, then 120~160 Sealing 3~8h of reaction is to get to vehicle-use air purification agent at DEG C.
Under optimum condition, the mass ratio of the organic titanate, organosilicon acid esters and transition metal salt is (30~100): (1~2):1.
Under optimum condition, the organic titanate is selected from tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, metatitanic acid At least one of four isobutyl esters, tetra-n-butyl titanate.
Under optimum condition, the organosilicon acid esters in quanmethyl silicate, ethyl orthosilicate, tetrabutyl silicate at least It is a kind of.
Under optimum condition, the transition metal salt is selected from soluble ferric iron salt, soluble nickel salt, soluble zinc salt, solubility At least one of cobalt salt, soluble manganese salt, soluble silver salt, soluble molybdenum salt.
Under optimum condition, the silane coupling agent is selected from aminopropyl triethoxysilane, aminopropyl trimethoxysilane, 2- Aminoethyl amino propyl trimethoxy silane, divinyl triammonium base propyl trimethoxy silicane, aminoethylaminopropyl methyl dimethoxy oxygen In base silane, aminoethylaminopropyl triethoxysilane, urea propyl-triethoxysilicane and urea propyl trimethoxy silicane extremely Few one kind.
Under optimum condition, the foaming agent is selected from azo-compound, sulfonyl hydrazines compound, nitroso compound and carbonic acid At least one of salt, such as can be 4,4- oxobenzenesulfonyl hydrazide, azodicarbonamide, N, five first of N '-dinitrosos At least one of urotropine and sodium carbonate.
Under optimum condition, the surfactant is selected from dodecyl sodium lauroyl sarcosine and sodium lauroyl glutamate At least one of.
Under optimum condition, the alcoholic solvent is in glycerine, ethyl alcohol, isopropanol, propylene glycol, ethylene glycol and n-butanol It is at least one.
The present invention will be described in detail by way of examples below.
Embodiment 1
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：8 parts by weight of tetraethyl titanate, positive silicic acid second 0.3 parts by weight of ester, 0.2 parts by weight of nickel chloride, 3 parts by weight of aminopropyl trimethoxysilane, 3 weight of 4,4- oxobenzenesulfonyl hydrazide Part, 100 parts by weight of polyhexamethylene adipamide, 1 parts by weight of dodecyl sodium lauroyl sarcosine, 50 parts by weight of glycerine.
(1) by tetraethyl titanate and ethyl orthosilicate in glycerine be uniformly mixed, stir to get mixed sols, then to Nickel chloride is added in mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and 4,4- oxobenzenesulfonyl hydrazide after mixing, carries out electrostatic in glycerine Spinning obtains poly fibre；The electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, phase To humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 8h at 400 DEG C in argon gas, obtains porous carbon fiber；
(3) mixture is added in porous carbon fiber, dodecyl sodium lauroyl sarcosine and aminopropyl trimethoxysilane Be in A, then the sealing reaction 6h at 140 DEG C, after reaction, solid product is centrifuged, is washed, dry to get to Vehicle-use air purification agent.
Embodiment 2
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：6 parts by weight of tetramethoxy titanate ester, silicic acid tetramethyl 0.2 parts by weight of ester, 0.2 parts by weight of silver nitrate, 3.2 parts by weight of aminoethylaminopropyl triethoxysilane, 3.2 weight of sodium carbonate Part, 120 parts by weight of polyhexamethylene adipamide, 1 parts by weight of dodecyl sodium lauroyl sarcosine, 50 parts by weight of ethyl alcohol.
(1) tetramethoxy titanate ester and quanmethyl silicate are uniformly mixed in ethanol, stir to get mixed sols, then to mixed It closes in colloidal sol and silver nitrate is added, mixed system A is obtained after stirring evenly；
(2) in ethanol after mixing by polyhexamethylene adipamide and sodium carbonate, electrostatic spinning is carried out, obtains gathering oneself two Acyl hexamethylene diamine fiber, the electrostatic spinning process are：Supply voltage 50kV, spinning temperature are 35 DEG C, relative humidity 75%；Spininess Head spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 6h at 350 DEG C in argon gas, obtains porous carbon fiber；
(3) porous carbon fiber, dodecyl sodium lauroyl sarcosine and aminoethylaminopropyl triethoxysilane are added In mixed system A, then sealing reaction 4h centrifuges solid product, is washed, is dried after reaction at 150 DEG C, Obtain vehicle-use air purification agent.
Embodiment 3
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：12 parts by weight of tetra-n-butyl titanate, silicic acid four 0.6 parts by weight of butyl ester, 0.3 parts by weight of sodium molybdate, 3.5 parts by weight of divinyl triammonium base propyl trimethoxy silicane, 4,4- oxos 1.8 parts by weight of double benzene sulfonyl hydrazides, 100 parts by weight of polyhexamethylene adipamide, 1.5 parts by weight of dodecyl sodium lauroyl sarcosine, 50 parts by weight of n-butanol.
(1) tetra-n-butyl titanate and tetrabutyl silicate are uniformly mixed in n-butanol, stir to get mixed sols, then Sodium molybdate is added into mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and 4,4- oxobenzenesulfonyl hydrazide after mixing, carries out electrostatic in n-butanol Spinning, obtains poly fibre, and the electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, phase To humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 10h at 350 DEG C in argon gas, obtains porous carbon fiber；
(3) by porous carbon fiber, dodecyl sodium lauroyl sarcosine and divinyl triammonium base propyl trimethoxy silicane It is added in mixed system A, then sealing reaction 3h centrifuges solid product, washs, does after reaction at 120 DEG C It is dry to get to vehicle-use air purification agent.
Embodiment 4
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：10 parts by weight of tetrabutyl titanate, silicic acid four 0.1 parts by weight of methyl esters, 0.1 parts by weight of zinc nitrate, 3 parts by weight of 2- aminoethyl amino propyl trimethoxy silanes, azodicarbonamide 5 Parts by weight, 80 parts by weight of polyhexamethylene adipamide, 2 parts by weight of sodium lauroyl glutamate, 40 parts by weight of propylene glycol.
(1) tetrabutyl titanate and quanmethyl silicate are uniformly mixed in propylene glycol, stir to get mixed sols, then Zinc nitrate is added into mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and azodicarbonamide in propylene glycol after mixing, carry out electrostatic spinning, obtain To poly fibre, the electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, relative humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 5h at 500 DEG C in argon gas, obtains porous carbon fiber；
(3) porous carbon fiber, sodium lauroyl glutamate and 2- aminoethyl amino propyl trimethoxy silanes are added and are mixed In system A, then at 120 DEG C sealing reaction 8h to get to vehicle-use air purification agent.
Embodiment 5
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：12 parts by weight of quanmethyl silicate, silicic acid tetramethyl 1 parts by weight of ester, 0.5 parts by weight of cobalt chloride, 4 parts by weight of urea propyl trimethoxy silicane, 1 weight of 4,4- oxobenzenesulfonyl hydrazide Part, 150 parts by weight of polyhexamethylene adipamide, 1 parts by weight of sodium lauroyl glutamate, 10 parts by weight of isopropanol.
(1) by quanmethyl silicate and quanmethyl silicate in isopropanol be uniformly mixed, stir to get mixed sols, then to Cobalt chloride is added in mixed sols, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and 4,4- oxobenzenesulfonyl hydrazide after mixing, carries out electrostatic in isopropanol Spinning, obtains poly fibre, and the electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, phase To humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 12h at 300 DEG C in argon gas, obtains porous carbon fiber；
(3) porous carbon fiber, sodium lauroyl glutamate and urea propyl trimethoxy silicane are added in mixed system A, Then the sealing reaction 3h at 160 DEG C centrifuges solid product, is washed, being dried to get to automobile-used sky after reaction Gas cleanser.
Comparative example 1
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：8 parts by weight of tetraethyl titanate, positive silicic acid second 0.3 parts by weight of ester, 3 parts by weight of aminopropyl trimethoxysilane, 3 parts by weight of 4,4- oxobenzenesulfonyl hydrazide, poly hexamethylene adipamide oneself two 100 parts by weight of amine, 1 parts by weight of dodecyl sodium lauroyl sarcosine, 50 parts by weight of glycerine.
(1) tetraethyl titanate and ethyl orthosilicate are uniformly mixed in glycerine, mixed system is obtained after stirring evenly A；
(2) by polyhexamethylene adipamide and 4,4- oxobenzenesulfonyl hydrazide after mixing, carries out electrostatic in glycerine Spinning obtains poly fibre；The electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, phase To humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 8h at 400 DEG C in argon gas, obtains porous carbon fiber；
(3) mixture is added in porous carbon fiber, dodecyl sodium lauroyl sarcosine and aminopropyl trimethoxysilane Be in A, then the sealing reaction 6h at 140 DEG C, after reaction, solid product is centrifuged, is washed, dry to get to Vehicle-use air purification agent.
Comparative example 2
A kind of vehicle-use air purification agent, is made of the substance of following parts by weight：8 parts by weight of tetraethyl titanate, aminopropyl three 3 parts by weight of methoxy silane, 3 parts by weight of 4,4- oxobenzenesulfonyl hydrazide, 100 parts by weight of polyhexamethylene adipamide, dodecyl 1 parts by weight of sodium lauroyl sarcosine, 50 parts by weight of glycerine.
(1) mixed system A is obtained after stirring evenly tetraethyl titanate in glycerine；
(2) by polyhexamethylene adipamide and 4,4- oxobenzenesulfonyl hydrazide after mixing, carries out electrostatic in glycerine Spinning obtains poly fibre；The electrostatic spinning process is：Supply voltage 50kV, spinning temperature are 35 DEG C, phase To humidity 75%；Multi needle spinneret unit syringe needle spacing 35cm, spinneret unit syringe needle quantity are 90；
Poly fibre is calcined into 8h at 400 DEG C in argon gas, obtains porous carbon fiber；
(3) mixture is added in porous carbon fiber, dodecyl sodium lauroyl sarcosine and aminopropyl trimethoxysilane Be in A, then the sealing reaction 6h at 140 DEG C, after reaction, solid product is centrifuged, is washed, dry to get to Vehicle-use air purification agent.
Experiment test：
The purifying property of VOCs is evaluated in Φ in vehicle-use air purification agent in 1-5 of the embodiment of the present invention and comparative example 1-2 It is carried out in the straight type polytetrafluoroethylene (PTFE) pipe reactor of 20mm, long 200mm, polytetrafluoroethylene (PTFE) tube reaction is added in vehicle-use air purification agent In device, it is -1.0KPa that polytetrafluoroethylene (PTFE) pipe reactor, which is then evacuated to pressure, then into polytetrafluoroethylene (PTFE) pipe reactor Unstripped gas is injected to normal pressure, tests the purifying rate of automobile-used air purifying preparation under different time to VOCs, and unstripped gas group becomes：Raw material Gas group becomes：VOCs concentration 56ppm (is 3 in molar ratio by formaldehyde, benzene,toluene,xylene:2:1:1), remaining is air.Instead It should be carried out under 25 DEG C of atmospheric pressure environments, experimental result is as shown in table 1~4.
Table 1：The purifying property of vehicle-use air purification agent PARA FORMALDEHYDE PRILLS(91,95) in embodiment and comparative example
2h 24h 15 days
Embodiment 1 39.76 75.61 94.03
Embodiment 2 38.49 72.69 93.54
Embodiment 3 34.40 71.23 89.94
Embodiment 4 33.23 66.06 88.96
Embodiment 5 27.77 69.28 91.89
Comparative example 1 12.57 49.50 87.21
Comparative example 2 22.51 58.07 84.77
Table 2：The purifying property of vehicle-use air purification agent in embodiment and comparative example to benzene
Table 3：The purifying property of vehicle-use air purification agent in embodiment and comparative example to toluene
2h 24h 15 days
Embodiment 1 37.81 69.57 87.60
Embodiment 2 40.83 72.59 93.44
Embodiment 3 38.49 70.94 94.13
Embodiment 4 44.24 73.47 88.87
Embodiment 5 37.81 66.55 88.57
Comparative example 1 30.40 59.24 84.09
Comparative example 2 21.44 55.15 77.66
Table 4：The purifying property of vehicle-use air purification agent paraxylene in embodiment and comparative example
2h 24h 15 days
Embodiment 1 36.80 63.86 74.82
Embodiment 2 35.06 61.25 80.21
Embodiment 3 32.97 62.38 77.69
Embodiment 4 33.76 61.16 76.82
Embodiment 5 32.36 58.38 75.69
Comparative example 1 25.67 51.85 60.38
Comparative example 2 17.57 48.11 65.86
To sum up, vehicle-use air purification agent of the invention can efficiently, quickly indoor VOCs is adsorbed and is catalyzed Degradation, the feature for having removal rate high, small to environmental hazard.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In the skill of the present invention In art conception range, technical scheme of the present invention can be carried out a variety of simple variants, including each technical characteristic with it is any its Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to Protection scope of the present invention.

Claims (8)

1. a kind of preparation method of vehicle-use air purification agent, which is characterized in that include the following steps：
(1) organic titanate and organosilicon acid esters are uniformly mixed in alcoholic solvent, mixed sols are stirred to get, then to mixing Transition metal salt is added in colloidal sol, mixed system A is obtained after stirring evenly；
(2) by polyhexamethylene adipamide and foaming agent in alcoholic solvent after mixing, carry out electrostatic spinning, obtain poly hexamethylene adipamide Poly fibre is then calcined 5~12h by hexamethylene diamine fiber in atmosphere of inert gases at 300~500 DEG C, Obtain porous carbon fiber；
(3) porous carbon fiber, surfactant and silane coupling agent are added in mixed system A, then at 120~160 DEG C Sealing 3~8h of reaction is to get to vehicle-use air purification agent.
2. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the organic titanate, The mass ratio of organosilicon acid esters and transition metal salt is (30~100):(1~2):1.
3. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the organic titanate choosing From at least one of tetraethyl titanate, tetramethoxy titanate ester, tetraisopropyl titanate, tetrabutyl titanate, tetra-n-butyl titanate.
4. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the organosilicon acid esters choosing From at least one of quanmethyl silicate, ethyl orthosilicate, tetrabutyl silicate.
5. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the transition metal salt choosing From soluble ferric iron salt, soluble nickel salt, soluble zinc salt, soluble cobalt, soluble manganese salt, soluble silver salt, soluble molybdenum At least one of salt.
6. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the silane coupling agent choosing From aminopropyl triethoxysilane, aminopropyl trimethoxysilane, 2- aminoethyl amino propyl trimethoxy silanes, divinyl triammonium Base propyl trimethoxy silicane, aminoethylaminopropyl methyl dimethoxysilane, aminoethylaminopropyl triethoxysilane, urea third At least one of ethyl triethoxy silicane alkane and urea propyl trimethoxy silicane.
7. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the foaming agent is selected from even At least one of nitrogen compound, sulfonyl hydrazines compound, nitroso compound and carbonate.
8. the preparation method of vehicle-use air purification agent according to claim 1, which is characterized in that the alcoholic solvent is selected from third At least one of triol, ethyl alcohol, isopropanol, propylene glycol, ethylene glycol and n-butanol.
CN201810423125.3A 2018-05-05 2018-05-05 A kind of preparation method of vehicle-use air purification agent Pending CN108620091A (en)

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Application publication date: 20181009