CN111170401B - Unsymmetrical dimethylhydrazine absorbent, preparation method and application - Google Patents
Unsymmetrical dimethylhydrazine absorbent, preparation method and application Download PDFInfo
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- CN111170401B CN111170401B CN202010056413.7A CN202010056413A CN111170401B CN 111170401 B CN111170401 B CN 111170401B CN 202010056413 A CN202010056413 A CN 202010056413A CN 111170401 B CN111170401 B CN 111170401B
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- C02F1/00—Treatment of water, waste water, or sewage
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Abstract
The invention belongs to the technical field of propellant treatment, and discloses a unsymmetrical dimethylhydrazine absorbent, a preparation method and application thereof. The preparation method comprises the following steps: weighing a proper amount of CTAB, dissolving in 100mL of deionized water, taking 100mL of graphene dispersion and 200mL of nanocellulose solution, uniformly mixing, adding into a 500mL three-neck flask, adjusting the pH of the solution to 8.5 by using NaOH to obtain a mixed solution, and dropwise adding 9-18 mL of ethyl orthosilicate into the mixed solution, wherein the mass ratio of graphene to nanocellulose to ethyl orthosilicate is 1:4: 16.7-33.4, stirring for 24h at 40 ℃, carrying out suction filtration on slurry obtained by reaction to obtain a filter cake, washing for 3 times by using ethanol, and carrying out vacuum drying for 24h at 60 ℃ to obtain a component A; preparing a component B: commercial macroporous weak-acid cation exchange resin is selected and is pretreated by deionized water, alkali and acid in sequence before use. The absorbent has the advantages of stable performance and good absorption effect.
Description
Technical Field
The invention relates to the technical field of propellant treatment, in particular to a unsymmetrical dimethylhydrazine absorbent, a preparation method and application thereof.
Background
The description of the background of the invention pertaining to the related art to which this invention pertains is given for the purpose of illustration and understanding only of the summary of the invention and is not to be construed as an admission that the applicant is explicitly or implicitly admitted to be prior art to the date of filing this application as first filed with this invention.
The liquid propellant has the advantages of high specific impulse, easy regulation of thrust, capability of being ignited for many times, capability of pulse work and the like, and is widely applied to various strategic missiles, tactical missiles, large-scale carrier rockets and various spacecrafts. Among them, nitro oxidants represented by dinitrogen tetroxide and hydrazine fuels represented by unsymmetrical dimethylhydrazine, anhydrous hydrazine and methyl hydrazine are the most commonly used conventional liquid propellants.
However, these conventional liquid propellants have the properties of flammability, explosiveness, strong corrosiveness, strong oxidizing property, and high toxicity, and once leakage occurs during the use, the conventional liquid propellants may cause the risks of fire, explosion, etc., and may cause environmental pollution, and threaten the life safety and health of people. In recent years, with the rapid development of national defense industry and aerospace technology in China, the consumption of liquid propellant is gradually increased, the application range is continuously expanded, and the possibility of leakage in the use process is continuously improved. When the leakage treatment is improper in the use process, the accident can be converted into a fire disaster, explosion or personnel poisoning accident at any time, and the fire disaster and explosion accident is often expanded due to the spread of the leakage accident. How to quickly deal with leaking liquid propellant is a core problem in restraining accident spread and deterioration. The liquid propellant treatment technologies at home and abroad mainly comprise an adsorption method, a neutralization method, an oxidation method, a chlorination method, a catalysis method, a biodegradation method and the like, and the adsorption method and the neutralization method are commonly used as emergency treatment. The neutralization method is to utilize an acid-base neutralization mechanism, and corresponding neutralization liquid is used for treatment when propellant leakage occurs, but a large amount of liquid flows and diffuses in the process, so that secondary pollution is easily caused due to expansion of a pollution area; the adsorption method is to utilize the absorbent to adsorb the leaked liquid propellant so as to be convenient for recovery or removal, and has the advantages of simple and convenient operation, low cost, reusable absorbent and the like, so the adsorption method has great practical significance in treating the leaked liquid propellant.
However, the existing adsorbent has the disadvantages of poor absorption effect and poor stability.
Disclosure of Invention
The invention aims to provide a unsymmetrical dimethylhydrazine absorbent, a preparation method and application thereof.
In a first aspect, the invention provides a method for preparing a unsymmetrical dimethylhydrazine absorbent, wherein the unsymmetrical dimethylhydrazine absorbent comprises a component A and a component B, and the preparation method comprises the following steps:
preparing a component A: weighing CTAB, dissolving in 100mL of deionized water, taking 100mL of graphene dispersion liquid and 200mL of nano cellulose solution, uniformly mixing, adding into a 500mL three-neck flask, adjusting the pH of the solution to 8.5 by using NaOH to obtain a mixed solution, and dropwise adding 9-18 mL of tetraethoxysilane into the mixed solution, wherein the mass ratio of graphene: nano-cellulose: 1:4 of ethyl orthosilicate: 16.7-33.4, stirring for 24h at 40 ℃, carrying out suction filtration on slurry obtained by reaction to obtain a filter cake, washing for 3 times by using ethanol, and carrying out vacuum drying for 24h at 60 ℃ to obtain the component A.
Preparing a component B: commercial macroporous weak-acid cation exchange resin is selected and is pretreated by deionized water, alkali and acid in sequence before use.
Further, the specific surface area of the component A is as follows: 300 to 500m2/g。
Furthermore, the total exchange capacity of the macroporous weak-acid cation exchange resin is more than or equal to 4.00mmol/g, and the adsorption ratio of the AB component is 1: 0.45.
In a second aspect, the invention provides a unsymmetrical dimethylhydrazine absorbent, wherein the absorbent is prepared by the preparation method.
In a third aspect, the invention provides the use of a unsymmetrical dimethylhydrazine absorbent in the absorption of a liquid propellant, wherein the absorbent is prepared by the preparation method or is the absorbent.
Further, the method comprises the following steps: the component A gelatinizes leaked unsymmetrical dimethylhydrazine, reduces the fluidity and the volatility of the unsymmetrical dimethylhydrazine, prevents a deflagration phenomenon possibly occurring during gas volatilization treatment, and the component B adsorbs the leaked unsymmetrical dimethylhydrazine through a large pore channel and neutralizes the unsymmetrical dimethylhydrazine through weak acid liquid in the pore channel.
The embodiment of the invention has the following beneficial effects:
component A is ternary micropore macromolecule adsorption material (graphite alkene/silica hybrid material load on macromolecular fiber skeleton) in the absorbent of this application, and component B is weak acid macroporous ion exchange resin, and component A will leak the unsymmetrical dimethylhydrazine gelatinization, reduces its mobility and volatility, the detonation phenomenon that probably appears when preventing gas volatilization processing, and component B adsorbs the unsymmetrical dimethylhydrazine that leaks through the large pore canal, and through the inside weak acid liquid neutralization unsymmetrical dimethylhydrazine in the pore canal.
The graphene/silicon dioxide composite material particles are loaded on the macromolecular cellulose to form the ternary microporous macromolecular material, and when the ternary microporous macromolecular material has high gas adsorption performance, leaked liquid can be gelatinized, so that the fluidity and the volatility of the liquid are reduced. Weak acidification macroporous ion exchange resin, utilize the characteristic that ion exchange resin aperture is big, adsorption capacity is big, fill weak acid liquid in the resin pore canal, can release a large amount of active hydrogen ions, ion migration diffusion easily in the process of adsorbing and neutralizing treatment uns-dimethylhydrazine, the adsorption rate is fast, and absorption efficiency is high, provides good contact condition for the treatment process uns-dimethylhydrazine enters into the resin pore canal and reacts with the weak acid liquid of packing and produces the salt, also has a large amount of hydrogen ions in the resin pore canal, with weak acid liquid coaction, improves absorption rate and adsorption capacity.
The unsymmetrical dimethylhydrazine absorbent provided by the invention has the advantages that the initial adsorption rate is high in the unsymmetrical dimethylhydrazine absorption process, the adsorption ratio is increased uniformly, the acidic substance is attached to the exchange resin, the pore diameter of the exchange resin is relatively large, volatile unsymmetrical dimethylhydrazine is easily adsorbed, the acidic substance is in full contact with the unsymmetrical dimethylhydrazine, and the acid-base neutralization reaction can be performed rapidly.
Drawings
FIG. 1 is a schematic diagram of unsymmetrical dimethylhydrazine treated by a ternary microporous macromolecular adsorption material (shown in the figure A) and weakly acidified macroporous ion exchange resin (shown in the figure B) according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an unsymmetrical dimethylhydrazine absorbent based on a graphene material according to an embodiment of the present invention.
FIG. 3 is a TEM photograph of unsymmetrical dimethylhydrazine absorbent in one embodiment of the present invention.
FIG. 4 is a comparison graph of gelling effect of unsymmetrical dimethylhydrazine absorbent component A in accordance with an embodiment of the present invention.
FIG. 5 is a graph showing a dryer side adsorption ratio test of a B component unsymmetrical dimethylhydrazine absorbent in one embodiment of the present invention.
FIG. 6 is a graph showing the change of adsorption ratio with time when an absorbent adsorbs excess unsymmetrical dimethylhydrazine in accordance with one embodiment of the present invention.
Detailed Description
The present application is further described below with reference to examples.
In the following description, different "one embodiment" or "an embodiment" may not necessarily refer to the same embodiment, in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art. Various embodiments may be replaced or combined, and other embodiments may be obtained according to the embodiments without creative efforts for those skilled in the art.
A preparation method of unsymmetrical dimethylhydrazine absorbent comprises a component A and a component B, and the preparation method comprises the following steps:
preparing a component A: weighing 3g of CTAB, dissolving in 100ml of deionized water, taking 100ml of graphene dispersion and 200ml of nanocellulose solution, uniformly mixing, adding into a 500ml three-neck flask, adjusting the pH of the solution to 8.5 by using NaOH to obtain a mixed solution, dropwise adding 14ml of ethyl orthosilicate into the mixed solution at a speed of 1-2 d/s, wherein the mass ratio of graphene to nanocellulose to ethyl orthosilicate is 1:4:25, stirring for 24 hours at 40 ℃, carrying out suction filtration on slurry obtained by reaction to obtain a filter cake, washing for 3 times by using ethanol, and carrying out vacuum drying for 24 hours at 60 ℃ to obtain the component A.
Preparing a component B: commercial D113 macroporous weak-acidic cation exchange resin is selected and is pretreated by deionized water, alkali and acid in sequence before use.
In some embodiments of the invention, the specific surface area of the a component is: 300 to 500m2/g。
In some embodiments of the invention, the total exchange capacity of the D113 macroporous weak-acid cation exchange resin is more than or equal to 4.00mmol/g, and the adsorption ratio of the AB component is 1: 0.45.
The unsymmetrical dimethylhydrazine absorbent is prepared by the preparation method.
The application of the unsymmetrical dimethylhydrazine absorbent in the absorption of liquid propellant is that the absorbent is prepared by the preparation method or is the absorbent.
In some embodiments of the invention, the method comprises the following steps: the component A gelatinizes leaked unsymmetrical dimethylhydrazine, reduces the fluidity and the volatility of the unsymmetrical dimethylhydrazine, prevents a deflagration phenomenon possibly occurring during gas volatilization treatment, and the component B adsorbs the leaked unsymmetrical dimethylhydrazine through a large pore channel and neutralizes the unsymmetrical dimethylhydrazine through weak acid liquid in the pore channel.
Aiming at the characteristics of weak alkalinity, strong volatility, flammability, explosiveness and the like of unsymmetrical dimethylhydrazine, the inventor develops an AB bi-component absorbent, and the AB bi-component absorbent is neutralized with unsymmetrical dimethylhydrazine gel and acid and alkali to achieve the purpose of treatment, and the working mechanism is as follows: the component A is a ternary microporous macromolecular adsorption material (graphene/silicon dioxide hybrid material is loaded on a macromolecular fiber framework), the component B is weakly acidified macroporous ion exchange resin, the component A gelatinizes leaked unsymmetrical dimethylhydrazine, the fluidity and the volatility of the unsymmetrical dimethylhydrazine are reduced, the deflagration phenomenon possibly occurring during gas volatilization treatment is prevented, and the component B adsorbs the leaked unsymmetrical dimethylhydrazine through a large pore channel and neutralizes the unsymmetrical dimethylhydrazine through weak acid liquid in the pore channel. Unsymmetrical dimethylhydrazine reacts with an acidic substance to generate nitrate, and the reaction formula is as follows:
(CH3)2NNH2+BH→BH·H2NN(CH3)2
the silicon dioxide is used as a mesoporous material (the aperture is between 2nm and 50 nm) and has the characteristics of gas adsorption and liquid adsorption, the graphene material is a planar two-dimensional material and has an ultrahigh specific surface area, but the plane of the graphene material is folded and folded, and the sheets are stacked mutually, so that the specific surface area of the graphene material is greatly reduced. A layer of mesoporous silica grows on two surfaces of a graphene sheet layer by adopting an electrostatic adsorption method to form microspheres, so that the graphene/silica composite material microspheres are obtained, the sheet layer aggregation and lamination of the composite material are effectively reduced under the action of the silica, and a large amount of mesoporous silica exists on the composite material, so that the composite material has larger specific surface area and pore volume, and the composite material has good application value in the aspects of gas adsorption and the like. The graphene/silicon dioxide composite material particles are loaded on the macromolecular cellulose to form the ternary microporous macromolecular material, and when the ternary microporous macromolecular material has high gas adsorption performance, leaked liquid can be gelatinized, so that the fluidity and the volatility of the liquid are reduced.
Weakly acidifying macroporous ion exchange resin, utilize the characteristic that ion exchange resin aperture is big, adsorption capacity is big, fill weak acid liquid in the resin pore canal, can release a large amount of active hydrogen ions, the ion is easy to migrate and diffuse in the process of adsorbing and neutralizing unsymmetrical dimethylhydrazine, the adsorption rate is fast, the absorption efficiency is high, provide the good contact condition for the treatment process, the schematic diagram of weakly acidifying macroporous ion exchange resin absorbing unsymmetrical dimethylhydrazine is shown as figure 1 (figure 1A is a schematic diagram of A component absorbing unsymmetrical dimethylhydrazine, figure 1B is a schematic diagram of B component absorbing unsymmetrical dimethylhydrazine), unsymmetrical dimethylhydrazine enters the resin pore canal and reacts with the weak acid liquid filled to produce the salt, also there are a large amount of hydrogen ions in the resin pore canal, with weak acid liquid coaction, improve absorption rate and adsorption capacity.
Example 1: preparation of unsym-dimethyl hydrazine adsorbent A component
Weighing 3g of CTAB, dissolving in 100ml of deionized water, taking 100ml of graphene dispersion (aqueous solution) and 200ml of nano cellulose solution, uniformly mixing, adding into a 500ml three-neck flask, adjusting the pH of the solution to 8.5 by using NaOH, dropwise adding 14ml of ethyl orthosilicate into the mixed solution at the speed of 1-2 d/s, stirring for 24h at 40 ℃, carrying out suction filtration on slurry obtained by reaction to obtain a filter cake, washing for 3 times by using ethanol, and carrying out vacuum drying for 24h at 60 ℃ to obtain a component A. (graphene: nanocellulose: ethyl orthosilicate: 1:4:25 by mass)
Example 2: preparation of unsym-dimethyl hydrazine adsorbent B component
Selecting commercial D113 macroporous weak-acidic cation exchange resin, and performing pretreatment, namely firstly using deionized water to soak and wash until water is clear and not turbid, then using 3% NaOH to soak for 3h, pouring out alkali liquor, using deionized water to wash the resin to be neutral, preferably using 5% HCl solution to soak for 6h, pouring out acid liquor, and using deionized water to wash until the resin is neutral for later use.
Color appearance
The unsymmetrical dimethylhydrazine absorbent is an AB component, wherein the A component is gray black fibrous particles, and the B component is light yellow particles, as shown in figure 2.
Scanning electron microscope
And observing the characterization appearance of the unsymmetrical dimethylhydrazine absorbent composite material based on the graphene by adopting an emission electron microscope. As can be seen from fig. 3(a), the silica-graphene microsphere particles are distributed around the long chain of the fibrous molecules, so that the gaps in the pores between cellulose molecules are increased, and the adhesion and caking property of the fibers in the gelling process are reduced. As can be seen from fig. 3(b) and (c), the graphene-silica composite microsphere particles are loaded on the macromolecular fibers to form a ternary microporous macromolecular material, which has high adsorption performance and adsorption rate and has basic conditions for treating liquid phase and gas phase; as can be seen from FIG. 3(d), the polymer branched chains are grafted into the fiber rigid skeleton to form a rigid-flexible network macromolecular structure, so that the product has the capability of fast curing to gel and higher absorption of unsymmetrical dimethylhydrazine.
Thermal stability
And (3) completing the thermal weight loss test of the unsymmetrical dimethylhydrazine absorbent component A in the air atmosphere, under the test condition that the air flow is 10mL/min, raising the temperature to 100 ℃ at the heating rate of 10 ℃/min, and determining the thermal weight loss (TG) curve of the sample. The test result shows that the sample has no obvious quality change in the temperature rising process from room temperature to 100 ℃, which indicates that the product has good thermal stability.
Chemical properties
Through component analysis of the developed dinitrogen tetroxide absorbent, the absorbent has good chemical stability, no spontaneous combustion, no combustion supporting, no toxicity and no harm.
Weighing quantitative unsymmetrical dimethylhydrazine absorbent component A respectively, lightly scattering the component A on unsymmetrical dimethylhydrazine liquid with the mass of 20 times, 10 times and 5 times, and forming an obvious rapid gelling process, wherein the component A absorbs the unsymmetrical dimethylhydrazine liquid to form colloid, the stirring gelling speed is faster, the solidified colloid is easy to stack and has no liquid flow, no liquid drops when being lifted in a conglomeration manner, the gelling process has no temperature change, and the test effect is shown in figure 4.
Adsorption ratio test
Absorbent adsorption ratio test: and (3) testing the adsorption capacity of the unsymmetrical dimethylhydrazine absorbent by adopting a dryer adsorption ratio testing method. Weighing 10g of unsymmetrical dimethylhydrazine liquid and placing the unsymmetrical dimethylhydrazine liquid at the bottom of a dryer, placing a watch glass weighed with 5g of absorbent on a sieve plate in the middle of the dryer, covering and sealing the watch glass and placing the watch glass at a cool place. And (5) timing when the absorbent is put in, and weighing periodically. The unsymmetrical dimethylhydrazine absorbent dryer test is shown in figure 5.
It can be seen from fig. 6 that the unsymmetrical dimethylhydrazine absorbent has a significant adsorption capacity, the maximum amount of unsymmetrical dimethylhydrazine that can be adsorbed and treated per unit mass of the absorbent can be measured by excess unsymmetrical dimethylhydrazine, the test of the change of the adsorption ratio with time is completed, and the test results are shown in table 1 and fig. 6.
TABLE 1 adsorption ratio as a function of time
| Time (h) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 24 |
| Total weight of | 37.72 | 38.16 | 38.51 | 38.82 | 39.13 | 39.41 | 39.67 | 39.88 | 39.97 | 39.98 | 39.97 |
| |
0 | 0.44 | 0.79 | 1.10 | 1.41 | 1.69 | 1.95 | 2.16 | 2.25 | 2.26 | 2.25 |
| |
0 | 0.088 | 0.158 | 0.22 | 0.282 | 0.338 | 0.39 | 0.432 | 0.45 | 0.452 | 0.45 |
As can be seen from table 1 and fig. 6, the initial adsorption rate of the unsymmetrical dimethylhydrazine absorbent is fast in the process of absorbing unsymmetrical dimethylhydrazine, and the increase of the adsorption ratio is uniform, because the acidic substance is attached to the exchange resin, and the pore size of the exchange resin is relatively large, so that volatile unsymmetrical dimethylhydrazine is easily adsorbed, and the acidic substance and the unsymmetrical dimethylhydrazine are in contact with each other sufficiently and can rapidly perform an acid-base neutralization reaction. With the progress of absorption, the acidic active factors in the absorbent are less and less until the active factors are completely lost, and the absorbent loses efficacy after absorbing unsymmetrical dimethylhydrazine to saturation, so that 2.25g of dinitrogen tetroxide can be absorbed and treated by 5g of the absorbent maximally, and the absorption ratio is 1: 0.45.
Study on treatment performance of true propellant of unsymmetrical dimethylhydrazine absorbent
The ability to handle real propellants was investigated using the developed dinitrogen tetroxide absorbents.
Real propellant treatment test
The test process comprises the following steps: adding 20mL of unsymmetrical dimethylhydrazine liquid into a wide-mouth bottle, using a wide-range unsymmetrical dimethylhydrazine concentration monitor to monitor the environmental concentration, wherein the environmental concentration is more than or equal to 1000ppm, weighing 10g of unsymmetrical dimethylhydrazine absorbent component A, slowly pouring the unsymmetrical dimethylhydrazine absorbent component A into the wide-mouth bottle, starting timing, slowly stirring, forming a reaction system into a colloid, adding 40g of unsymmetrical dimethylhydrazine absorbent component B, stirring, fully and uniformly mixing the unsymmetrical dimethylhydrazine colloid and the component B, and stopping timing and recording the time when the concentration monitor value is 0.
Real propellant scale-up test
The test process comprises the following steps: pouring 100mL of unsymmetrical dimethylhydrazine liquid into a tray, weighing 30g of unsymmetrical dimethylhydrazine absorbent component A, slowly pouring, stirring to make unsymmetrical dimethylhydrazine gelatinize without liquid flow, covering unsymmetrical dimethylhydrazine absorbent component B on colloid, and slowly stirring until the component B is fully mixed with the colloid. And (3) fully and uniformly mixing the unsymmetrical dimethylhydrazine colloid and the component B, stopping timing when the numerical value of the concentration monitor is 0, and recording time, wherein the time is shown in a table 2.
TABLE 2 absorbent treatment unsymmetrical dimethylhydrazine test results
| Serial number | Unsym-dimethyl hydrazine addition/mL | Gel forming time | Concentration/ppm after treatment | Time of |
| 1 | 100 | 2min56s | 2 | 5min56s |
| 2 | 100 | |
0 | |
| 3 | 100 | |
1 | 6min10s |
The result shows that the absorbent can effectively treat the unsymmetrical dimethylhydrazine liquid, the removal efficiency reaches more than 99 percent, the treatment time is less than 7min, and the requirements of contract technical indexes are met.
It should be noted that the above embodiments can be freely combined as necessary. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A preparation method of unsymmetrical dimethylhydrazine absorbent is characterized in that the unsymmetrical dimethylhydrazine absorbent comprises a component A and a component B, and the preparation method comprises the following steps:
preparing a component A: weighing CTAB, dissolving in 100mL of deionized water, taking 100mL of graphene dispersion liquid and 200mL of nano cellulose solution, uniformly mixing, adding into a 500mL three-neck flask, adjusting the pH of the solution to 8.5 by using NaOH to obtain a mixed solution, and dropwise adding 9-18 mL of ethyl orthosilicate into the mixed solution, wherein the mass ratio of graphene: nano-cellulose: stirring ethyl orthosilicate at a ratio of 1:4: 16.7-33.4 at 40 ℃ for 24 hours, carrying out suction filtration on slurry obtained by reaction to obtain a filter cake, washing the filter cake with ethanol for 3 times, and carrying out vacuum drying at 60 ℃ for 24 hours to obtain a component A;
preparing a component B: commercial macroporous weak-acid cation exchange resin is selected and is pretreated by deionized water, alkali and acid in sequence before use.
2. The method for preparing unsymmetrical dimethylhydrazine absorbent according to claim 1, wherein the specific surface area of the component A is as follows: 300 to 500m2/g。
3. The preparation method of unsymmetrical dimethylhydrazine absorbent according to claim 1, wherein the total exchange capacity of the macroporous weakly acidic cation exchange resin is not less than 4.00mmol/g, and the adsorption ratio of the AB component is 1: 0.45.
4. An unsymmetrical dimethylhydrazine absorbent, wherein said absorbent is produced by the production method according to any one of claims 1 to 3.
5. Use of an unsymmetrical dimethylhydrazine absorbent in the absorption of a liquid propellant, wherein said absorbent is prepared by a process according to any one of claims 1 to 3 or is an absorbent according to claim 4.
6. Use of unsymmetrical dimethylhydrazine absorbent according to claim 5 in the absorption of liquid propellants comprising the steps of: the component A gelatinizes leaked unsymmetrical dimethylhydrazine, reduces the fluidity and the volatility of the unsymmetrical dimethylhydrazine, prevents a deflagration phenomenon possibly occurring during gas volatilization treatment, and the component B adsorbs the leaked unsymmetrical dimethylhydrazine through a large pore channel and neutralizes the unsymmetrical dimethylhydrazine through weak acid liquid in the pore channel.
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| CN108579707A (en) * | 2018-04-16 | 2018-09-28 | 中国科学院兰州化学物理研究所 | A kind of sandwich structure solid amine CO2Adsorbent and preparation method thereof |
| CN109942880A (en) * | 2019-02-20 | 2019-06-28 | 赵文斌 | A kind of preparation method of nano-cellulose base porous compound material |
| CN109926027A (en) * | 2019-04-12 | 2019-06-25 | 常州大学 | A kind of preparation method of mesoporous trace Cellulose nanocrystal/graphene oxide membrane |
| CN110526380A (en) * | 2019-08-29 | 2019-12-03 | 中国人民解放军火箭军工程大学 | A method of processing uns-dimethylhydrazine waste water |
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