CN102286267A - Microemulsion used for inhibiting generation and transportation of liquid chemical toxic gas and preparation method thereof - Google Patents
Microemulsion used for inhibiting generation and transportation of liquid chemical toxic gas and preparation method thereof Download PDFInfo
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Abstract
The invention relates to microemulsion used for inhibiting the generation and transportation of liquid chemical toxic gas and a preparation method thereof. The preparation method is as follows: C16-C22 higher fatty alcohol, C3-C6 short-chain alcohol, white oil, mineral oil, liquid paraffin and organosilicon oil are used as the oil phase and fatty alcohol-polyoxyethylene ether and alkylphenol-polyoxyethylene ether are used as the emulsifier to prepare a stable W/O microemulsion system, namely the inhibitor for inhibiting the volatilization of the liquid chemical. The microemulsion can be spread spontaneously on the surface of the liquid chemical to form an insoluble molecular film, thus the generation and transportation of the toxic gas can be effectively inhibited and the inhibition efficiency can be maintained high within 10 hours; and the inhibitor has the advantages of good stability, certain environmental interference resistance and very good self-repairing capability. The preparation technology is simple; the prepared product can be used for timely and effectively reducing the environmental pollution and harm on a human body caused by the leakage of the liquid chemical; and the product has extremely high application value in the treatment of the large-scale leakage accident of the liquid chemical.
Description
Technical field
The present invention relates to hazardous chemical toxic gas evaporable prevention and control field, especially a kind of liquid dangerization product toxic gas that suppresses generates microemulsion with transmission and preparation method thereof.
Background technology
In recent years, China's chemical industry fast development, kind, the quantity of hazardous chemical constantly increase, and leakage accident also sharply rises, and has caused great harm for the country and people masses life, property and ecotope.In a single day leakage accident takes place easy volatile liquid dangerization product can produce strong and stimulating, corrodibility toxic gas, causes hazardous accidents on a large scale.According to incompletely statistics, only in three of 2002-2004 years, 1091 easy volatile liquid dangerization product accidents have taken place in China altogether, and accumulative total causes 977 people's death, has 1477 people injured in accident, and 8695 people poison; Analytic statistics draws, the ratio that has an accident in the haulage stage is the highest, the most serious in the loss that the production phase has an accident, especially basic chemical industry raw materials such as concentrated hydrochloric acid, strong aqua, concentrated nitric acid, there is a sharp increase in output in recent years, 2010 annual production all near or surpass ten million ton, leakage accident takes place frequently in transportation, production, storage process, the a large amount of toxic gases of association are very big to peripheral personnel and environmental hazard.With hydrochloric acid is example, belongs to strong and stimulating, the volatile acid of corrodibility, and to human body and environmental hazard maximum is to follow to reveal a large amount of acid mists that produce.According to incompletely statistics, 162 of extensive hydrochloric acid leakage accidents only in transit, take place during 2006 to 2010 in China, take place more than 30 every year on average, and this statistic data is not included in the leakage accident in production, storage and the use.
In history, miserable security incident all once took place in the world and China's associated danger chemical, caused huge loss of life and personal injury.The seventies in 20th century, developed country begins the chemical management of making laws, especially the complete monitoring from crable to " grave " is carried out in the hazardous chemical strictness, especially strict to the appliance arrangement that uses in production, transportation, the storage process, rare in recent years extensive leakage accident.In recent years, China also pays much attention to the trouble-free service of hazardous chemical, has taked a series of reinforcement Supervision Measures, has formulated corresponding laws and regulations.But still there are a large amount of problems in China's liquid dangerization product management at present; it is dangerous to be mainly reflected in device facility essence; cause the hardware (technology, equipment, automatization control etc.) of security control not hard; software (management) too soft (seriously not in place); cause the leakage accident to take place frequently; Serious Accident happens occasionally, and the situation is tense, presses for technical support and professional guidance means targetedly.
At present, for the leakage accident of liquid dangerization product, aspect generation of control toxic gas and transmission, the emergency processing measure of adopting both at home and abroad is identical substantially, and ordinary method mainly can be divided into three kinds, dilution method, neutralisation and cladding process.
" the emergent quick checking of hazardous chemical commonly used handbook according to State Administration of Quality and Technical Supervision's establishment; China is for easy volatile liquid dangerization product leakage accidents such as hydrochloric acid, ammoniacal liquor, formaldehyde; mainly lay particular emphasis on and adopt dilution method and acid-base neutralisation method that leak liquid is reclaimed and handles; can control the wider diffusion of toxic gas to a certain extent; but can not be in the effectively generation of control toxic gas of the very first time; and dilution, N-process can produce a large amount of chemical heat, more promote the generation and the diffusion of toxic gas in the short period of time.
Having report to adopt with hc-surfactant and fluorocarbon surfactant is the aqueous film-forming foam extinguishing agent covering leak liquid surface minimizing volatilization of base-material, this class material can form water membrane on some hydrocarbon liquids surface and reduce the toxic gas generation, but for similar hydrochloric acid isopolarity liquid, this class material can be dissolved in the leakage liquid, foam can break rapidly and lose efficacy, and can not form stable tectum and suppress toxic gas generation and transmission.Also have report to adopt the non-fusibility fire foam to cover the leak liquid surface and reduce volatilization, mainly contain the metallic soap type, three types of gel-type and modified hydrolyzed protein types etc., this class material is primarily aimed at water-soluble, the fuel of water Combination or polar solvent type and preparing, though can resist the dissolved destruction of polar liquid to the upper foam layer, it can be played suffocates and refrigerative fire extinguishing effect, but liquid such as hydrochloric acid have very strong corrodibility to this class material, can not generate and transmission by fine inhibition toxic gas, no matter be water-to-film or non-fusibility fire foam, all be at secluding air and cooling refrigerative fire extinguishing action principle and design, for volatile corrosive liquid such as hydrochloric acid, can not form form compact and stable condensed state molecular film at its liquid-gas interface, thereby can't effectively suppress the generation and the transmission of toxic gas.
In addition, also mainly lay particular emphasis on the Diffusion Law of modeling analysis toxic gas for the research of toxic gas harm, though can have better guide significance to accident generation back evacuation crowd, in case leakage accident takes place, toxic gas is subjected to the weather environmental influence remarkable, spreads rapid and uncontrollable.Therefore, in the face of the present situation that China's liquid dangerization product leakage accident takes place frequently, ordinary method can not effectively be controlled the generation and the transmission of toxic gas, demands researching and developing new technology urgently.
The mass transfer of liquid-gas interface is the process of material face migration transboundary, surfactant molecule is a class " amphiphile, amphiphilic molecule ", the trend of " fleeing from " in solution is arranged, easily be enriched in solution surface and adsorb, can align at the interface, spontaneous sprawling forms insoluble molecular film, change liquid level and directly be exposed to airborne state, when parfacies fluid molecule effusion liquid level, stopped by the interface molecular film, cause vaporator rate obviously to reduce.Thisly sprawl the technology that tensio-active agent forms the insoluble film resistance of molecule evaporation at fluid surface and be called as molecular film resistance evaporation technique.
In recent years, Chinese scholars suppresses moisture evaporation to molecular film and has carried out deeply theory and applied research widely, and has obtained good effect.If molecular film can be hindered the volatilization that evaporation technique is applied to suppress liquid dangerization product, this will be in leakage accident is handled, and in time control toxic gas and generate and transmission, effectively guarantee an effective way of peripheral personnel and environmental safety.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part; provide a kind of liquid dangerization product toxic gas that suppresses to generate microemulsion with transmission and preparation method thereof; this emulsion can suppress the volatilization of liquid dangerization product to greatest extent, reduces timely and effectively to leak hazard to person and the environmental pollution that is caused.
The present invention realizes that the technical scheme of purpose is as follows:
A kind of liquid dangerization product toxic gas that suppresses generates and the microemulsion that transmits, and moiety and parts by weight are as follows:
And, described oil phase is the combination between white oil, mineral oil, whiteruss, the organic silicone oil, the parts by weight ratio be (white oil: mineral oil): whiteruss: organic silicone oil=70～80: 10～15: 5～10, white oil wherein: mineral oil=70～80: 20～30.
And described C16-C22 Fatty Alcohol(C12-C14 and C12-C18) comprises one of hexadecanol, stearyl alcohol, eicosanol or behenyl alcohol or two or more mixtures.
And described C3-C6 short chain alcohol comprises: one of n-propyl alcohol, propyl carbinol, Pentyl alcohol or n-hexyl alcohol or two or more mixtures.
And described emulsifying agent is a nonionogenic tenside, and ionic surfactant pack is drawn together fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene.
And described fatty alcohol-polyoxyethylene ether comprises AEO-2, AEO-3, AEO-8 or AEO-9.
And described alkylphenol polyoxyethylene comprises OP-9 or OP-10.
A kind of liquid dangerization product toxic gas that suppresses generates and the preparation of microemulsion method of transmitting, and step is as follows:
Take by weighing oil phase, heating in water bath adds C16-C22 Fatty Alcohol(C12-C14 and C12-C18) and C3-C6 short chain alcohol to 60-85 ℃, adds emulsifying agent, after stirring 20-60min, slowly add boiling water, stir 30-60min fast after, put into 0-4 ℃ of water and cool off fast, stir 15-30min, promptly get microemulsion.
Advantage of the present invention and positively effect are:
1, this microemulsion hinders the volatilization aspect that evaporation technique is applied to suppress liquid dangerization product with molecular film; microemulsion can spontaneously form fine and close insoluble molecular film at liquid dangerization product surface spreading; avoided liquid dangerization product directly to be exposed in the air; in 10h, can keep higher inhibition efficient; have good stability; the hazard to person and the environmental pollution that reduce leakage accident greatly and caused; high using value is being arranged, social benefit and obvious environment benefit aspect the large-scale liquid dangerization product leakage accident of processing.
2, the film base material of this microemulsion is selected C16-C22 high fatty alcohol and C3-C6 short chain alcohol interworking, the alcohol of different chain length has synergistic effect preferably, can form fine and close molecular film at liquid-gas interface, effectively suppress the generation and the diffusion of toxic gas, guarantee peripheral personnel and environmental safety.
3, the selection white oil of the microemulsion oil phase of this microemulsion, mineral oil, whiteruss, organic silicone oil are oil phase; C16-C22 high fatty alcohol and C3-C6 short chain alcohol there is good solute effect; help Fatty Alcohol(C12-C14 and C12-C18) to form fine and close molecular film at liquid-gas interface; improved velocity of diffusion; shortened the treatment time, in time the protection person, environment and property safety.
4, the emulsifying agent of this microemulsion selection is a nonionogenic tenside, comprises fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, and emulsifying agent can effectively improve the stability that microemulsion is preserved and used.
5, this microemulsion has good anti-ambient interference ability and self-reparing capability, can effectively suppress the volatilization of liquid dangerization product, can degrade the biological safety height simultaneously in environment.
Description of drawings
Fig. 1 influences the hydrochloric acid evaporable for microemulsion surface concn of the present invention;
Fig. 2 influences the hydrochloric acid evaporable for the present invention's microemulsion under condition of different temperatures;
Fig. 3 influences the hydrochloric acid evaporable for the present invention's microemulsion under different wind conditions;
Fig. 4 influences the ammoniacal liquor evaporable for microemulsion surface concn of the present invention;
Fig. 5 influences the ammoniacal liquor evaporable for the present invention's microemulsion under condition of different temperatures;
Fig. 6 influences the ammoniacal liquor evaporable for the present invention's microemulsion under different wind conditions;
Fig. 7 is microemulsion surface concn PARA FORMALDEHYDE PRILLS(91,95) evaporable influence of the present invention;
Fig. 8 is the present invention's microemulsion PARA FORMALDEHYDE PRILLS(91,95) evaporable influence under condition of different temperatures.
Embodiment
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment 1
A kind of liquid dangerization product toxic gas that suppresses generates and the microemulsion that transmits, and moiety and parts by weight are as follows:
Wherein the parts by weight ratio between the white oil of oil phase, mineral oil, whiteruss, the organic silicone oil is: (white oil: mineral oil): whiteruss: organic silicone oil=75: 15: 10, wherein white oil: mineral oil=70: 30.
Emulsifying agent is a nonionogenic tenside, comprising AEO-2, AEO-3, AEO-8, the AEO-9 of fatty alcohol-polyoxyethylene ether, the OP-9 of alkylphenol polyoxyethylene and OP-10.
C16H33OH is the C16-C22 Fatty Alcohol(C12-C14 and C12-C18), also comprises hexadecanol, stearyl alcohol, eicosanol, behenyl alcohol.
C3H7OH is the C3-C6 short chain alcohol, also comprises: n-propyl alcohol, propyl carbinol, Pentyl alcohol, n-hexyl alcohol.
A kind of liquid dangerization product toxic gas that suppresses generates and the preparation of microemulsion method of transmitting, and step is as follows:
Take by weighing oil mixture, heating in water bath is to 60-85 ℃, adds long-chain alcohol and short chain alcohol, adds AEO-2 and OP-9, stir 30min after, slowly add boiling water, stir 30min fast after, put into 0-4 ℃ of water and cool off fast, stirring 15-30min promptly gets microemulsion.
A kind of liquid dangerization product toxic gas that suppresses generates and the microemulsion that transmits, and moiety and parts by weight are as follows:
Wherein the parts by weight ratio scope between the white oil of oil phase, mineral oil, whiteruss, the organic silicone oil is: (white oil: mineral oil): whiteruss: organic silicone oil=80: 15: 5, wherein white oil: mineral oil=80: 20.
A kind of liquid dangerization product toxic gas that suppresses generates and the preparation of microemulsion method of transmitting, and step is as follows:
Take by weighing oil mixture, heating in water bath is to 60-85 ℃, adds long-chain alcohol and short chain alcohol, adds AEO-3 and OP-10, stir 30min after, slowly add boiling water, stir 30min fast after, put into 0-4 ℃ of water and cool off fast, stirring 15-30min promptly gets microemulsion.
Microemulsion at this above-mentioned preparation provides following detection realization and data and chart:
Comparative Examples 1
This microemulsion suppresses the concentrated hydrochloric acid volatilization
The testing method of concentrated hydrochloric acid volatilization inhibiting rate: adopt volumetry, be used as estimating the index of institute's research system inhibition usefulness with the fall off rate of concentrated hydrochloric acid concentration.Calculation formula is as follows:
In the formula: C-concentrated hydrochloric acid concentration; C
0The concentration of-standard solution of sodium hydroxide; V
0The volume of the used sodium hydroxide solution of titration; The volume of concentrated hydrochloric acid that V gets.
The different microemulsion surface concns of accompanying drawing 1 expression are to the influence of concentrated hydrochloric acid evaporable, and what show among the figure is that concentrated hydrochloric acid concentration is over time under the different situations.Concrete experiment condition is: in six 250ml beakers, add quantitative concentrated hydrochloric acid respectively, shop, the surface of hydrochloric acid adds the microemulsion inhibitor in each beaker, and concentration is followed successively by 0g/m
2, 30g/m
2, 35g/m
2, 40g/m
2, 45g/m
2And 50g/m
2Every the certain hour sampling analysis, calculate concentration of hydrochloric acid with acid base titration.As seen from Figure 1, when microemulsion was not sprawled on the concentrated hydrochloric acid surface, concentrated hydrochloric acid concentration sharply descended; After sprawling this product, changed concentrated hydrochloric acid and directly be exposed to airborne state, effectively suppressed the volatilization of concentrated hydrochloric acid, and, suppressed concentrated hydrochloric acid volatilization ability and strengthen along with surface concn increases.
The resisting temperature interference performance of accompanying drawing 2 expression microemulsion inhibitor, what show among the figure is that concentrated hydrochloric acid concentration is over time under the different situations.Concrete experiment condition is: microemulsion inhibitor and unrestraint agent experiment arranged respectively under differing temps, promptly respectively quantitative concentrated hydrochloric acid placed 6 250ml beakers, and salt acid surfaces upper berth microemulsion inhibitor in 3 beakers wherein, concentration is 50g/m
2Keep the beaker temperature to be followed successively by 25 ℃, 35 ℃, 45 ℃, other 3 blank that are respectively under above-mentioned 3 kinds of temperature, the starting point concentration of hydrochloric acid equates in each experiment, Therapy lasted is 10 hours under each temperature, the concentration of hydrochloric acid obtains two concentration curves about temperature when finishing with the experiment of acid base titration record.As seen from Figure 2, when the microemulsion inhibitor was not spread on the concentrated hydrochloric acid surface, concentrated hydrochloric acid concentration sharply descended; After sprawling microemulsion, change concentrated hydrochloric acid and directly be exposed to airborne state, effectively suppressed the volatilization of concentrated hydrochloric acid, and rising along with temperature, the inhibition effect of this inhibitor slightly descends, but amplitude is little, illustrates that it has resisting temperature interference performance preferably.
Because the size of wind-force can influence the gas/liquid interface performance, liquid interface easily forms the convection current turbulence, so wind-force not only can accelerate the mass transfer velocity of HCl molecule, and can destroy the hydrochloric acid volatilization inhibitor at the formed insoluble film of hydrochloric acid surface spreading.
The wind resistance power interference performance of accompanying drawing 3 expression microemulsion inhibitor, what show among the figure is that concentrated hydrochloric acid concentration is over time under the different wind conditions.Concrete experiment condition is: the envrionment temperature of outdoor simulating experiment is 25 ℃, adds wind speed and be 1 grade to fresh breeze power, respectively quantitative concentrated hydrochloric acid is placed 6 250ml beakers, and (surface concn is 50g/m to shop, the surface microemulsion inhibitor of hydrochloric acid in 3 beakers wherein
2), 3 conducts are blank in addition, Therapy lasted 10h.As shown in Figure 3, along with the increase of wind-force, liquid-gas interface mass transfer flux increases, and inhibitor hydrochloric acid volatilization effect is variation gradually.Under fresh breeze power, inhibitor still has corresponding inhibition effect, and it is better that the wind resistance rapid-curing cutback is disturbed ability.When wind speed is lower than 4 grades, not spread microemulsion inhibitor situation with the surface and compare, it is little that this product is disturbed by wind-force, still has than obvious suppression hydrochloric acid evaporable effect.
Comparative Examples 2
This microemulsion suppresses the strong aqua volatilization
The testing method of ammoniacal liquor volatilization inhibiting rate: adopt volumetry, suppress the index of usefulness with the fall off rate of ammonia concn as evaluation institute research system.Calculation formula is as follows:
In the formula: the C-ammonia concn; C
0The concentration of-hydrochloric acid standard solution; V
0The volume of the used hydrochloric acid of titration; The volume of ammoniacal liquor that V gets
Fig. 4 represents different microemulsion surface concns to ammoniacal liquor evaporable influence, and what show among the figure is that ammonia concn is over time under the different surfaces concentration.As seen from Figure 4, when microemulsion is not spread on the ammoniacal liquor surface, the ammonia concn i.e. all volatilizations in 3 hours that sharply descend; After sprawling this product, changed ammoniacal liquor and directly be exposed to airborne state, effectively suppressed the volatilization of ammoniacal liquor, the volatilization of ammoniacal liquor obtains good restraining, and along with surface concn increases, suppresses ammoniacal liquor volatilization ability and strengthen.When surface concn reaches 140g/m
2The time, inhibiting rate just can reach more than 90%.
As seen from Figure 5, temperature is very big to the volatilization influence of ammoniacal liquor, and along with the rising of temperature, the rate of volatilization of ammoniacal liquor also obviously increases.Yet as long as temperature is not higher than 30 ℃, inhibitor still can keep a higher inhibition effect.
As shown in Figure 6, be lower than at wind-force under 3 grades the situation, wind-force suppresses the almost not influence of ammoniacal liquor evaporable effect to microemulsion, and inhibitor can remain and suppress effect preferably.
Comparative Examples 3:
Microemulsion suppresses the formaldehyde volatilization
The testing method of formaldehyde volatilization inhibiting rate: adopt weighting method, suppress the index of usefulness with formaldehyde volatilization inhibiting rate as evaluation institute research system.Calculation formula is as follows:
In the formula: W
f=W
F is former-W
Behind the fW
d=W
D is former-W
Behind the d
W
d: sprawl formaldehyde steam output behind the inhibitor, g; W
f: formaldehyde steam output, g
Fig. 7 represents different microemulsion surface concn PARA FORMALDEHYDE PRILLS(91,95) evaporable influences, and what show among the figure is that formaldehyde volatilizees inhibiting rate over time under the different situations.Concrete experiment condition is: in six 250ml beakers, add quantitative formaldehyde respectively, shop, the surface of formaldehyde adds the microemulsion inhibitor in each beaker, and concentration is followed successively by 0g/m
2, 50g/m
2, 100g/m
2, 150g/m
2, 200g/m
2And 250g/m
2Every the certain hour sampling analysis, calculate formaldehyde volatilization inhibiting rate with weighting method.As seen from Figure 7, sprawl this product after, changed formaldehyde and directly be exposed to airborne state, microemulsion has effectively suppressed the volatilization of formaldehyde, and along with surface concn increases, suppresses formaldehyde volatilization ability and strengthen.
Fig. 8 represents the resisting temperature interference performance of microemulsion inhibitor, and what show among the figure is that formaldehyde volatilizees inhibiting rate over time under the different situations.Concrete experiment condition is: microemulsion inhibitor and unrestraint agent experiment is arranged respectively under differing temps, promptly respectively quantitative formaldehyde is placed 12 250ml beakers, to upper berth, six beaker system for tax payment aldehyde surfaces microemulsion inhibitor wherein, concentration is 100g/m
2Keep the beaker temperature to be followed successively by 25 ℃, 30 ℃, 35 ℃, 40 ℃ and 45 ℃, other six blank that are respectively under above-mentioned six kinds of temperature, Therapy lasted is 10 hours under each temperature, calculate formaldehyde volatilization inhibiting rate with weighting method, obtain two concentration curves about temperature.
Fig. 8 as can be seen, when inhibitor was not spread on the formaldehyde surface, formaldehyde volatilization inhibiting rate sharply descended; After sprawling this product, change formaldehyde and directly be exposed to airborne state, effectively suppressed the volatilization of formaldehyde, and along with the rising (25-45 ℃) of temperature, the inhibition effect of this microemulsion inhibitor remains unchanged substantially, illustrates that it has resisting temperature interference performance preferably.
Claims (8)
1. one kind is suppressed the microemulsion that liquid dangerization product toxic gas generates and transmits, and it is characterized in that: moiety and parts by weight are as follows:
2. inhibition liquid dangerization product toxic gas according to claim 1 generates the microemulsion with transmission; it is characterized in that: described oil phase is the combination between white oil, mineral oil, whiteruss, the organic silicone oil; the parts by weight ratio be (white oil: mineral oil): whiteruss: organic silicone oil=70～80: 10～15: 5～10, white oil wherein: mineral oil=70～80: 20～30.
3. inhibition liquid dangerization product toxic gas according to claim 1 generates the microemulsion with transmission, and it is characterized in that: described C16-C22 Fatty Alcohol(C12-C14 and C12-C18) comprises one of hexadecanol, stearyl alcohol, eicosanol or behenyl alcohol or two or more mixtures.
4. inhibition liquid dangerization product toxic gas according to claim 1 generates the microemulsion with transmission, and it is characterized in that: described C3-C6 short chain alcohol comprises one of n-propyl alcohol, propyl carbinol, Pentyl alcohol or n-hexyl alcohol or two or more mixtures.
5. inhibition liquid dangerization product toxic gas according to claim 1 generates the microemulsion with transmission, and it is characterized in that: described emulsifying agent is a nonionogenic tenside, and ionic surfactant pack is drawn together fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene.
6. inhibition liquid dangerization product toxic gas according to claim 5 generates the microemulsion with transmission, and it is characterized in that: described fatty alcohol-polyoxyethylene ether comprises AEO-2, AEO-3, AEO-8 or AEO-9.
7. inhibition liquid dangerization product toxic gas according to claim 5 generates the microemulsion with transmission, and it is characterized in that: described alkylphenol polyoxyethylene comprises OP-9 or OP-10.
8. an inhibition liquid dangerization product toxic gas as claimed in claim 1 generates and the preparation of microemulsion method of transmitting, and it is characterized in that: step is as follows:
Take by weighing oil phase, heating in water bath adds C16-C22 Fatty Alcohol(C12-C14 and C12-C18) and C3-C6 short chain alcohol to 60-85 ℃, adds emulsifying agent, after stirring 20-60min, slowly add boiling water, stir 30-60min fast after, put into 0-4 ℃ of water and cool off fast, stir 15-30min, promptly get microemulsion.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060579A (en) * | 2018-07-24 | 2018-12-21 | 公安部天津消防研究所 | Organic liquid harmful influence leakage disposition test device and test method based on absorbent |
| CN110361236A (en) * | 2019-08-13 | 2019-10-22 | 南京师范大学 | A kind of the sampling evaluating apparatus and evaluation method of pesticide industry place volatility smell substance |
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| JPH0965994A (en) * | 1995-09-01 | 1997-03-11 | Toto Ltd | Counter integrated with washbowl and manufacture thereof |
| CN101235267A (en) * | 2007-01-31 | 2008-08-06 | 天津科技大学 | Method for preparing heterogeneous water evaporation inhibitor |
| CN101235266A (en) * | 2007-01-31 | 2008-08-06 | 天津科技大学 | Method for preparing composite water evaporation inhibitor |
| CN101805145A (en) * | 2010-03-12 | 2010-08-18 | 江苏省建筑科学研究院有限公司 | Plastic concrete water evaporation inhibitor and preparation method thereof |
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| JPS4965994A (en) * | 1972-09-29 | 1974-06-26 | ||
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| JPH0965994A (en) * | 1995-09-01 | 1997-03-11 | Toto Ltd | Counter integrated with washbowl and manufacture thereof |
| CN101235267A (en) * | 2007-01-31 | 2008-08-06 | 天津科技大学 | Method for preparing heterogeneous water evaporation inhibitor |
| CN101235266A (en) * | 2007-01-31 | 2008-08-06 | 天津科技大学 | Method for preparing composite water evaporation inhibitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060579A (en) * | 2018-07-24 | 2018-12-21 | 公安部天津消防研究所 | Organic liquid harmful influence leakage disposition test device and test method based on absorbent |
| CN110361236A (en) * | 2019-08-13 | 2019-10-22 | 南京师范大学 | A kind of the sampling evaluating apparatus and evaluation method of pesticide industry place volatility smell substance |
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|---|---|
| CN102286267B (en) | 2013-11-20 |
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