CN107941655B - Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant - Google Patents
Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant Download PDFInfo
- Publication number
- CN107941655B CN107941655B CN201711106407.2A CN201711106407A CN107941655B CN 107941655 B CN107941655 B CN 107941655B CN 201711106407 A CN201711106407 A CN 201711106407A CN 107941655 B CN107941655 B CN 107941655B
- Authority
- CN
- China
- Prior art keywords
- gel
- stirring
- liquid matrix
- viscosity regulator
- viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0056—Preparation of gels containing inorganic material and water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N2011/0006—Calibrating, controlling or cleaning viscometers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a gel simulation liquid formula of a rocket engine hydrazine gel propellant and a preparation method thereof, wherein the formula comprises a simulation liquid matrix, a gel and a viscosity regulator, the simulation liquid matrix is water, alcohol or a mixture of water and alcohol, and the mass concentration range of the simulation liquid matrix is 90-99%; the gel is a hydrophilic substance, and is selected from one of hydrophilic nano-silica, carbomer, agar, gelatin, cyclodextrin derivatives and a nano HA/PVA porous composite material, and the mass concentration range of the gel is 0.1-5%; the viscosity regulator is a hydrophilic substance, one of hydroxyethyl cellulose and carboxymethyl cellulose is selected, and the mass concentration range of the viscosity regulator is 0.1-5%. The simulated liquid matrix, the gelling agent and the viscosity regulator are prepared into the gel simulated liquid through a multi-step composite technology under certain conditions. The invention solves the problem that hydrazine gel propellant has great influence on the safety and health of scientific researchers in the research process of the field calibration device of the conventional gel viscometer.
Description
Technical Field
The invention relates to a formula of gel simulation liquid of a hydrazine gel for a rocket engine and a preparation method of the gel simulation liquid.
Background
Gel propellant has the advantages of both liquid propellant and solid propellant, so that the development of the new concept propellant is being attempted at home and abroad for about half a century, and advanced colloidal propulsion technology (gel propulsion), namely 'smart' propulsion technology, is developed accordingly. Ground tests and flight tests of colloid propulsion technology have been successfully performed in the united states. At present, the gel propellant applied to the aerospace propulsion system in China is mainly hydrazine gel propellant, such as DT-3 gel propellant. Hydrazine-70 gel propellants, UDMH gel propellants and the like have been studied.
The viscosity data of the gel propellant is an important parameter, the gel propellant is different from the conventional liquid propellant, the rheological property is influenced by a plurality of factors such as pressure, ambient temperature, vibration and the like, and meanwhile, the rheological property also obviously influences the atomization mode. Therefore, obtaining accurate viscosity data under different temperature test conditions becomes an important research content in gel propellant development.
The hydrazine gel propellant has the problems of high toxicity (high toxicity I-II level), flammability, explosiveness, environmental pollution and the like. However, in the research of the field calibration device of the liquid rocket engine gel viscometer, a large amount of gel propellant media needs to be subjected to viscosity calibration test, and if the existing hydrazine gel propellant is used, the safety, the environmental protection and the health are greatly influenced. Therefore, the research and the use of the hydrazine gel propellant simulation liquid have an important role in the research and the application of the on-site calibration device of the gel viscometer.
Disclosure of Invention
The invention provides a formula and a preparation method of gel simulation liquid of a hydrazine gel propellant of a rocket engine, aiming at solving the problem that the hydrazine gel propellant has great influence on the safety and health of scientific researchers in the research process of the existing on-site calibration device of a gel viscometer.
The technical solution of the invention is as follows:
the invention relates to a formula of gel simulation liquid of a hydrazine gel propellant of a rocket engine, which is characterized in that:
comprises a simulated liquid matrix, a gelling agent and a viscosity regulator;
the simulated liquid matrix is water, alcohol or a mixture of water and alcohol, and the mass concentration range of the simulated liquid matrix is 90-99%;
the gel is a hydrophilic substance, one of hydrophilic nano-silica, carbomer, agar, gelatin, cyclodextrin derivatives and a nano HA/PVA porous composite material is selected, and the mass concentration range of the gel is 0.1-5%;
the viscosity regulator is a hydrophilic substance, one of hydroxyethyl cellulose and carboxymethyl cellulose is selected, and the mass concentration range of the viscosity regulator is 0.1-5%.
Furthermore, in order to play a good role in viscosity regulation, the viscosity regulator is hydroxyethyl cellulose, and the molecular weight of the hydroxyethyl cellulose is 1-40 ten thousand.
Meanwhile, the invention provides a method for preparing gel simulation liquid by using the formula of the gel simulation liquid of the rocket engine hydrazine gel propellant, which is characterized by comprising the following steps:
1) slowly adding a gelling agent into the gel simulation liquid matrix at normal temperature and normal pressure for dispersion while stirring;
2) after the gel is completely dispersed, continuously stirring for a certain time to enable the gel and the matrix molecules of the simulation liquid to generate bond interaction, thereby building a reticular gel framework;
3) adding viscosity regulator, stirring while dispersing, and stirring for a certain time after complete dispersion to stabilize the state of the gel simulation liquid composite system, further solidify the gel skeleton, and stabilize the viscosity.
Further, the dispersion time of the gel in the simulated liquid matrix is 0.5-2 h, the dispersion time of the viscosity regulator in the simulated liquid matrix is 0.5-2 h, the stirring time in the process of compounding the three substances is 5h, the constant-speed stirring is carried out in the process of compounding the gel and the simulated liquid matrix, the stirring speed is 200-600 r/min, the constant-speed stirring is carried out in the process of compounding the viscosity regulator and the simulated liquid matrix, and the stirring speed is 200-800 r/min.
The invention also provides another method for preparing the gel simulation liquid by using the gel simulation liquid formula of the rocket engine hydrazine gel propellant, which is characterized by comprising the following steps of:
1) slowly adding a viscosity regulator into the gel simulation liquid matrix at normal temperature and normal pressure for dispersion while stirring;
2) after the viscosity modifier is completely dispersed, continuously stirring for a certain time to enable the viscosity modifier and the matrix molecules of the simulation liquid to generate bond interaction, thereby building a mesh gel framework;
3) adding the gel, dispersing while stirring, and continuously stirring for a certain time after complete dispersion to stabilize the state of the gel simulation liquid composite system, further firm the gel skeleton and stabilize the viscosity.
Further, the dispersion time of the gel in the simulated liquid matrix is 0.5-2 h, the dispersion time of the viscosity regulator in the simulated liquid matrix is 0.5-2 h, the stirring time in the process of compounding the three substances is 5h, the constant-speed stirring is carried out in the process of compounding the gel and the simulated liquid matrix, the stirring speed is 200-600 r/min, the constant-speed stirring is carried out in the process of compounding the viscosity regulator and the simulated liquid matrix, and the stirring speed is 200-800 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a gel propellant simulation liquid formula and a preparation method thereof, the simulation liquid prepared according to the formula and the preparation method can replace hydrazine gel propellant, can safely and reliably carry out field calibration on a gel viscometer to obtain quantity value transmission, and solves the problem that the hydrazine gel propellant has great influence on the safety and health of scientific researchers in the research process of the existing field calibration device of the gel viscometer.
2. The invention lays a foundation for the viscosity measurement and calibration technology of novel general gel engines and novel attitude control power devices.
Drawings
FIG. 1 is a rheological profile of example 1;
FIG. 2 is a graph of the rheology for example 2;
FIG. 3 is the rheology profile of example 3;
FIG. 4 is the rheology profile of example 4;
FIG. 5 is the rheology profile of example 5;
FIG. 6 is the rheology profile of example 6;
FIG. 7 is the rheology profile of example 7;
FIG. 8 is a graph of the rheology of example 8.
Detailed Description
The present invention will be described in detail below.
First, simulation fluid performance requirement
The gel simulation liquid simulates hydrazine propellant, and the performance requirements on the gel simulation liquid are as follows:
1. under normal temperature and pressure, the gel simulation liquid is a non-Newtonian fluid, and when the pressure of the use environment is less than the shear pressure (namely the yield stress), the performance conforms to the law of the non-Newtonian fluid;
2. the viscosity range is 1000 mPa.s-70000 mPa.s;
3. the physical properties are stable, and the phenomena of layering, agglomeration, decomposition and the like can not occur in the storage process at normal temperature and normal pressure;
4. the thermal stability is good, the temperature adaptability is good at minus 50 ℃ to 150 ℃, and the agglomeration and the delamination can not occur in the temperature range.
Second, formula
A. Simulated liquid matrix
The simulated liquid matrix simulates hydrazine substances, and hydrophilic substances such as deionized water, alcohols and the like are selected.
B. Gel screening
When the gel is selected, the polarity of the gel is considered firstly, so that the gel can be effectively and uniformly compounded with a simulated liquid matrix; the material has a large specific surface area and a high void ratio secondarily, and has good dispersibility and suspension property, thickening, thixotropic and reinforcing effects in a simulated liquid matrix; and the composite material is stable after being compounded with a simulation liquid matrix, so that the phenomena of layering, decomposition and the like caused by long-time placement are avoided.
The gel can be selected from small molecular oxide, high molecular substance, nanometer composite material, etc. The polarity of the gel is similar to that of the simulated liquid matrix, and the gel does not react with the simulated liquid matrix and can play a role in gelation. Such as: modified nano silicon dioxide, cellulose and derivatives thereof, carbomer, agar, gelatin, acrylic resin, starch derivatives, cyclodextrin derivatives, nano HA/PVA porous composite materials and the like.
b. Viscosity modifier screening
The screening of the viscosity regulator is the same as that of the gel, and the viscosity regulator has sensitive response to the viscosity of the gel simulation liquid and is an important influence factor of viscosity change. The viscosity regulator is macromolecular cellulose substance, is compatible with the simulated liquid matrix, does not damage the gel skeleton, plays a role in regulating and controlling viscosity and also plays a role in gelling.
c. Recipe determination
The gelling agent and the viscosity regulator do not react with each other chemically and have proper proportion.
Third, several specific examples are listed below, and the percentages in the examples are percentages by mass.
Example 1
Hydrophilic nano silicon dioxide is selected as a gel, carboxymethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is a mixture of deionized water and ethanol. 21.406kg of deionized water is injected into a 50L reaction kettle at normal temperature and normal pressure, 0.9 percent of carboxymethyl cellulose is slowly added for full dispersion for 30min, and then the mixture is stirred for 1 h. And adding 1.8% of silicon dioxide for dispersing for 30min, stirring the composite system for 20h, stopping the reaction, standing for 48h, and measuring the viscosity data to be 18976 mpa.s.
Example 2
Carbomer is selected as a gelling agent, hydroxyethyl cellulose is selected as a viscosity regulator, and the matrix of the gel simulation liquid is deionized water. At normal temperature and normal pressure, 21.01kg of deionized water is injected into a 50L reaction kettle, 2.5 percent of hydroxyethyl cellulose is slowly added for full dispersion, the dispersion time is 40min, and then the mixture is stirred for 2 h. And adding 2% carbomer for dispersing for 30min, stirring the composite system for 24h, stopping the reaction, standing for 48h, and measuring the viscosity data to be 52381 mpa.s.
Example 3
Agar is selected as a gelling agent, carboxymethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is glycerol. At normal temperature and pressure, 21.12kg of glycerol was poured into a 50L reactor, and 2% agar was slowly added thereto for sufficient dispersion for 40min, followed by stirring for 3 hours. And then adding 2% of carboxymethyl cellulose for dispersing for 40min, stirring the composite system for 30h, stopping the reaction, standing for 48h, and measuring the viscosity data to be 37680 mpa.s.
Example 4
Nanometer silicon dioxide is selected as a gel, hydroxyethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is deionized water. 21.56kg of the matrix mixture was poured into a 50L reactor at normal temperature and pressure, and 1% hydroxyethyl cellulose was slowly added for dispersion for 40min, followed by stirring for 3 hours. And adding 1% of nano silicon dioxide, fully dispersing for 40min, stirring the composite system for 30h, stopping the reaction, standing for 48h, and measuring the viscosity data to be 25769 mpa.s.
Example 5
Nanometer silicon dioxide is selected as a gel, hydroxyethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is deionized water. 21.67kg of matrix was injected into a 50L reactor at normal temperature and pressure, 0.5% hydroxyethyl cellulose was slowly added for dispersion for 40min, and then stirred for 3 h. And adding 1% of nano silicon dioxide, fully dispersing for 40min, stirring the composite system for 30h, stopping the reaction, standing for 48h, and measuring the viscosity data to be 12302 mpa.s.
Example 6
Gelatin is selected as a gel, hydroxyethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is deionized water. 21.516kg of matrix was injected into a 50L reactor at normal temperature and pressure, 1.2% hydroxyethyl cellulose was slowly added for dispersion for 40min, and then stirred for 3 hours. And adding 1% gelatin, fully dispersing for 40min, stirring the composite system for 30h, stopping reaction, standing for 48h, and measuring the viscosity data to 18691 mpa.s.
Example 7
Cyclodextrin is selected as a gel, hydroxyethyl cellulose is selected as a viscosity regulator, and a gel simulation liquid matrix is deionized water. 21.098kg of matrix was injected into a 50L reactor at normal temperature and pressure, 1.1% hydroxyethyl cellulose was slowly added for dispersion for 40min, and then stirred for 3 hours. And adding 3% of cyclodextrin for full dispersion, wherein the dispersion time is 40min, stopping the reaction after the composite system is stirred for 30h, and standing for 48h to obtain the viscosity data of 35427 mpa.s.
Example 8
The nano HA/PVA is selected as a gel, the hydroxyethyl cellulose is selected as a viscosity regulator, and the gel simulation liquid matrix is deionized water. 21.098kg of matrix was injected into a 50L reactor at normal temperature and pressure, 1% hydroxyethyl cellulose was slowly added for dispersion for 40min, and then stirred for 3 hours. And then adding 2% of nano HA/PVA for full dispersion, wherein the dispersion time is 40min, stopping the reaction after the composite system is stirred for 30h, standing for 48h, and measuring the viscosity data to be 22202 mpa.s.
In the multiphase compounding process, the gel, the viscosity regulator and the matrix can be uniformly compounded by adopting methods such as vibration, ultrasonic and the like, and the compounding time is 1-30 h.
Fourthly, performance detection
1. Simulated liquid viscosity test
The viscosity data in the embodiments 1 to 8 of the invention are measured by a special gel viscometer NDJ-4 type rotary viscometer, and the viscosity range can be measured as follows: 2#A rotor: 500 mPa.s-100000 mPa.s, the testing environment is 20 ℃.
2. Simulated rheological Performance test
The rheological properties of the viscosity of the gel-simulated fluid with shear rate were tested using a HAAKE RbeoStress 6000 rheometer. Firstly, calibrating a rheometer by using a standard liquid, then correcting a correction coefficient, and finally measuring a change graph of the sample viscosity along with the shear rate. Each sample was assayed in triplicate for 100s each.
Taking fig. 1 as an example, as can be seen from the rheological graph, the flow performance of the gel simulation liquid is represented by shear thinning when the shear rate is from small to large, and the gel viscosity is restored to the initial state when the shear rate is from large to small, so that the gel simulation liquid conforms to the characteristics of non-newtonian fluid and has the same flow performance as that of the hydrazine gel propellant. The trends of the graphs of fig. 2 to 8 are the same as those of fig. 1, and will not be described again.
3. Other properties
The simulation liquid has stable physical properties, and can not generate the phenomena of layering, agglomeration, decomposition and the like in the storage process at normal temperature and normal pressure; the thermal stability is good, the temperature adaptability is good at minus 50 ℃ to 150 ℃, and the agglomeration and the delamination can not occur in the temperature range.
Claims (6)
1. The gel simulation liquid formula of the hydrazine gel propellant of the rocket engine comprises a simulation liquid matrix, a gelling agent and a viscosity regulator; the simulated liquid matrix is water, alcohol or a mixture of water and alcohol, and the mass concentration range of the simulated liquid matrix is 90-99%; the gel is a hydrophilic substance, one of hydrophilic nano-silica, carbomer, agar, gelatin, cyclodextrin derivatives and a nano HA/PVA porous composite material is selected, and the mass concentration range of the gel is 0.1-5%; the viscosity regulator is a hydrophilic substance, one of hydroxyethyl cellulose and carboxymethyl cellulose is selected, and the mass concentration range of the viscosity regulator is 0.1-5%, and the method is characterized by comprising the following steps:
1) slowly adding a gelling agent into the gel simulation liquid matrix at normal temperature and normal pressure for dispersion while stirring;
2) after the gel is completely dispersed, continuously stirring for a certain time to enable the gel and the matrix molecules of the simulation liquid to generate bond interaction, thereby building a reticular gel framework;
3) adding viscosity regulator, stirring while dispersing, and stirring for a certain time after complete dispersion to stabilize the state of the gel simulation liquid composite system, further solidify the gel skeleton, and stabilize the viscosity.
2. The method of preparing a gel simulant according to claim 1, wherein:
the dispersion time of the gel in the simulated liquid matrix is 0.5-2 h, the dispersion time of the viscosity regulator in the simulated liquid matrix is 0.5-2 h, the stirring time in the process of compounding the three substances is 5h, the constant-speed stirring is carried out in the process of compounding the gel and the simulated liquid matrix, the stirring speed is 200-600 r/min, the constant-speed stirring is carried out in the process of compounding the viscosity regulator and the simulated liquid matrix, and the stirring speed is 200-800 r/min.
3. The method of preparing a gel simulant according to claim 1, wherein: the viscosity regulator is hydroxyethyl cellulose, and the molecular weight of the hydroxyethyl cellulose is 1 to 40 ten thousand.
4. The gel simulation liquid formula of the hydrazine gel propellant of the rocket engine comprises a simulation liquid matrix, a gelling agent and a viscosity regulator; the simulated liquid matrix is water, alcohol or a mixture of water and alcohol, and the mass concentration range of the simulated liquid matrix is 90-99%; the gel is a hydrophilic substance, one of hydrophilic nano-silica, carbomer, agar, gelatin, cyclodextrin derivatives and a nano HA/PVA porous composite material is selected, and the mass concentration range of the gel is 0.1-5%; the viscosity regulator is a hydrophilic substance, one of hydroxyethyl cellulose and carboxymethyl cellulose is selected, and the mass concentration range of the viscosity regulator is 0.1-5%, and the method is characterized by comprising the following steps:
1) slowly adding a viscosity regulator into the gel simulation liquid matrix at normal temperature and normal pressure for dispersion while stirring;
2) after the viscosity modifier is completely dispersed, continuously stirring for a certain time to enable the viscosity modifier and the matrix molecules of the simulation liquid to generate bond interaction, thereby building a mesh gel framework;
3) adding the gel, dispersing while stirring, and continuously stirring for a certain time after complete dispersion to stabilize the state of the gel simulation liquid composite system, further firm the gel skeleton and stabilize the viscosity.
5. The method of preparing a gel simulant according to claim 4, wherein:
the dispersion time of the gel in the simulated liquid matrix is 0.5-2 h, the dispersion time of the viscosity regulator in the simulated liquid matrix is 0.5-2 h, the stirring time in the process of compounding the three substances is 5h, the constant-speed stirring is carried out in the process of compounding the gel and the simulated liquid matrix, the stirring speed is 200-600 r/min, the constant-speed stirring is carried out in the process of compounding the viscosity regulator and the simulated liquid matrix, and the stirring speed is 200-800 r/min.
6. The method of preparing a gel simulant according to claim 5, wherein: the viscosity regulator is hydroxyethyl cellulose, and the molecular weight of the hydroxyethyl cellulose is 1 to 40 ten thousand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106407.2A CN107941655B (en) | 2017-11-10 | 2017-11-10 | Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106407.2A CN107941655B (en) | 2017-11-10 | 2017-11-10 | Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941655A CN107941655A (en) | 2018-04-20 |
| CN107941655B true CN107941655B (en) | 2020-02-21 |
Family
ID=61934790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711106407.2A Active CN107941655B (en) | 2017-11-10 | 2017-11-10 | Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941655B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289403B (en) * | 2018-12-10 | 2023-05-16 | 北京航天试验技术研究所 | Method for analyzing content of gelatinizing agent in colloid propellant |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3723712A (en) * | 1971-10-12 | 1973-03-27 | Komline Sanderson Eng Corp | Method for agglomeration measuring and control |
| US5076846A (en) * | 1989-06-06 | 1991-12-31 | Pluss-Staufer Ag | Highly concentrated aqueous suspension of minerals and/or fillers and/or pigments, stabilized with one or more polyampholytes |
| US5084186A (en) * | 1989-06-20 | 1992-01-28 | Gilchrist Ian C R | Sedimentation control process |
| US6013143A (en) * | 1998-04-20 | 2000-01-11 | The United States Of America As Represented By The Secretary Of The Army | Tertiary amine azides in hypergolic liquid or gel fuels propellant systems |
| WO2001067370A2 (en) * | 2000-03-06 | 2001-09-13 | Gene Logic, Inc. | Virtual gel profiling system |
| US6361629B2 (en) * | 1998-11-12 | 2002-03-26 | The United States Of America As Represented By The Secretary Of The Air Force | Flowable solid propellant |
| US7921638B2 (en) * | 2006-04-20 | 2011-04-12 | Combustion Propulsion & Ballistic Technology Corp. | Bi-propellant rocket motor having controlled thermal management |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485934B (en) * | 2012-06-11 | 2016-03-09 | 中航商用航空发动机有限责任公司 | A kind of thrust for motor promotes system and method |
| CN103308518A (en) * | 2013-05-22 | 2013-09-18 | 中国航天科技集团公司第六研究院第十一研究所 | Heavy-piston quick pressure testing system and method for realizing supercritical state by utilizing same |
| CN105717270B (en) * | 2015-09-30 | 2017-11-14 | 南京理工大学 | Gel propellant list drop second-time breakage experimental provision |
| CN106365935A (en) * | 2016-08-26 | 2017-02-01 | 湖北航天化学技术研究所 | High-strength electric-control solid propellant |
| CN107226768B (en) * | 2017-05-19 | 2019-02-19 | 天津大学 | Gel propellant as aerospace fuel and preparation method and use |
-
2017
- 2017-11-10 CN CN201711106407.2A patent/CN107941655B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3723712A (en) * | 1971-10-12 | 1973-03-27 | Komline Sanderson Eng Corp | Method for agglomeration measuring and control |
| US5076846A (en) * | 1989-06-06 | 1991-12-31 | Pluss-Staufer Ag | Highly concentrated aqueous suspension of minerals and/or fillers and/or pigments, stabilized with one or more polyampholytes |
| US5084186A (en) * | 1989-06-20 | 1992-01-28 | Gilchrist Ian C R | Sedimentation control process |
| US6013143A (en) * | 1998-04-20 | 2000-01-11 | The United States Of America As Represented By The Secretary Of The Army | Tertiary amine azides in hypergolic liquid or gel fuels propellant systems |
| US6361629B2 (en) * | 1998-11-12 | 2002-03-26 | The United States Of America As Represented By The Secretary Of The Air Force | Flowable solid propellant |
| WO2001067370A2 (en) * | 2000-03-06 | 2001-09-13 | Gene Logic, Inc. | Virtual gel profiling system |
| US7921638B2 (en) * | 2006-04-20 | 2011-04-12 | Combustion Propulsion & Ballistic Technology Corp. | Bi-propellant rocket motor having controlled thermal management |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107941655A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Effect of pH on the rheological properties of borate crosslinked hydroxypropyl guar gum hydrogel and hydroxypropyl guar gum | |
| Nguyen et al. | Experimental and modelling studies of the flow properties of maize and waxy maize starch pastes | |
| CN110929400B (en) | A kind of self-healing gel plugging material for evaluating the stability of healing and plugging | |
| CN107941655B (en) | Formula and preparation method of gel simulation liquid of rocket engine hydrazine gel propellant | |
| CN107266941A (en) | Modification method of nano white carbon black used as rubber filler | |
| CN110196185A (en) | A kind of solid-liquid coupling physical simulation experimental material and preparation method thereof | |
| CN109575490A (en) | A kind of transparent clay and preparation method thereof | |
| Zhang et al. | Synthesis of a water‐soluble chain transfer agent and its application in gel dispersions | |
| Liu et al. | A new insight into the mechanical behavior of high-quality RDX in pressed polymer bonded explosives | |
| Tao et al. | Fabrication and characterization of a novel underground mining emulsion explosive containing thickening microcapsules | |
| Seidy Esfahlan et al. | Fabrication, optimization and characterization of preformed-particle-gel containing nanogel particles for conformance control in oil reservoirs | |
| Varma et al. | Optimisation of processing conditions for gel propellant production | |
| CN105037651A (en) | Preparation method for azo block cationic waterborne polyurethane | |
| CN110864975B (en) | Healing and leaking stoppage performance evaluation method of self-healing gel leaking stoppage material | |
| CN103728166A (en) | Transparent mortar mixture simulating rheological property of cement mortar and preparation method of transparent mortar mixture | |
| CN109385094A (en) | A kind of silicon rubber conducting masterbatch and its preparation method and application | |
| CN1576358A (en) | Starch /gelatin/glycerol aqueous compound elastic current change colloid | |
| JP6334059B2 (en) | Process for producing hydrocolloids with various ranges of hydrophobicity | |
| CN118978607B (en) | Hydration temperature rise inhibitor with strong peak clipping and weak retarding as well as preparation method and application thereof | |
| Jong | Simplification of interior latex paint using biopolymer to replace rheological additives and calcium carbonate extender | |
| John et al. | Rheological study of solid ethanol using different solidifying agents | |
| Siavoshani et al. | How do stretch rate, temperature, and solvent exchange affect elastic network rupture? | |
| Khromova | The effect of chlorides on alginate gelation in the presence of calcium sulfate | |
| CN114656312B (en) | Thixotropic improver for emulsion explosive | |
| CN111925772B (en) | Silicon dioxide combined material, application and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |