CN115073248B - Supercritical carbon dioxide heating agent and preparation method thereof - Google Patents
Supercritical carbon dioxide heating agent and preparation method thereof Download PDFInfo
- Publication number
- CN115073248B CN115073248B CN202210824714.9A CN202210824714A CN115073248B CN 115073248 B CN115073248 B CN 115073248B CN 202210824714 A CN202210824714 A CN 202210824714A CN 115073248 B CN115073248 B CN 115073248B
- Authority
- CN
- China
- Prior art keywords
- class
- agent
- potassium perchlorate
- carbon dioxide
- heating agent
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
- C06B21/0066—Shaping the mixture by granulation, e.g. flaking
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a supercritical carbon dioxide heating agent and a preparation method thereof, wherein the supercritical carbon dioxide heating agent comprises the following components in percentage by mass: 1.0 to 3.0 percent; feel reducing agent: 2% -4%; oxidizing agent: 68% -75%; and (3) fuel: 18% -25%; flame retardant: 0.5 to 1.0 percent; the heating agent does not contain aluminum powder, and avoids the product Al 2 O 3 The agglomeration is not easy to clean on the inner wall of the transmitting cylinder; and in order to obtain supercritical CO with high combustion speed and combustion speed pressure index 2 The formula of the heating agent, the heating agent is introduced with a combustion speed regulator capable of improving the combustion speed, and the combustion speed of the supercritical carbon dioxide heating agent can be greatly improved.
Description
Technical Field
The invention relates to the technical field of solid propellants, in particular to a heating agent for supercritical carbon dioxide ejection and a preparation method thereof.
Background
The missile launching mode can be divided into two types of self-thrust launching (also called thermal launching) and external power launching (also called cold launching or ejection) according to the difference of launching power; the ejection is to eject the missile out of a launching tube or a launching frame by means of external power; when the missile reaches a certain height, the missile is ignited by an ejection engine; the gas generator is a power source of an ejection engine, and in the gas generator, a large amount of high-temperature and high-pressure gas is generated after the gas generating agent grain is ignited to work; the gas expands to apply work, so that the guided missile moves upwards along the guide rail and ejects the barrel at a preset speed; the fuel gas generating agent is a special propellant which generates a large amount of gas through combustion or decomposition, and the formula composition of the fuel gas generating agent is similar to that of the composite solid propellant, but the selection and the content of the components of the fuel gas generating agent are different from those of the composite solid propellant due to different purposes.
The common gas generating agents are mainly Ammonium Perchlorate (AP) gas generating agents and Ammonium Nitrate (AN) gas generating agents according to the types of oxidizing agents; the AP type gas generating agent has the characteristics of high burning speed, wide adjustable range of the burning speed and the like, but because the AP type gas generating agent has high burning temperature and the decomposition product contains corrosive gas hydrogen chloride, the AP type gas generating agent has higher requirements on the high temperature resistance and corrosion resistance of the gas generator and the transmitting cylinder; the AN type fuel gas generating agent has the characteristics of low combustion temperature, clean fuel gas and the like, but has the defects of low combustion speed of 0.7-8.0 mm/s under 6.86 MPa.
Carbon dioxide is colorless, odorless and nonflammable gas at normal temperature and normal pressure, and has higher density than air; the three-way point is at the temperature of minus 56.4 ℃ and 0.52MPa, and at the temperature and the pressure, the gaseous carbon dioxide, the liquid carbon dioxide and the solid carbon dioxide can coexist; the critical point is 31.1 ℃ and 7.38MPa, and at the temperature and the pressure, the carbon dioxide in the gaseous state, the liquid state and the supercritical state can coexist; when the temperature and pressure of the carbon dioxide are the critical temperature and critical pressure, the carbon dioxide enters a supercritical state, and supercritical CO 2 The catapult has the characteristic cold emission advantage, and has high emission speed and clean fuel gas, so that the catapult has become a research hot spot in the field of catapulting.
Currently aimed at supercritical CO 2 The firing rate and the firing rate pressure index of the ejected heating agent are not high, and supercritical CO exists 2 Gasifying in a very short time to eject the missile body; and the existing heating agent contains aluminum powder, and the product Al 2 O 3 The combustion products are easy to agglomerate on the inner wall of the transmitting cylinder, so that the ejected combustion products remain in the transmitting cylinder and are difficult to clean, and the transmitting cylinder after ejection cannot be reused (ejected) in a short time.
Disclosure of Invention
In view of the above problems, a first object of the present invention is to provide a supercritical carbon dioxide heating agent which does not contain aluminum powder and avoids the product Al 2 O 3 The agglomeration is not easy to clean on the inner wall of the transmitting cylinder; and in order to obtain supercritical CO with high combustion speed and combustion speed pressure index 2 The formula of the heating agent, wherein a catalyst (combustion speed regulator) capable of improving the combustion speed is introduced into the heating agent, so that the combustion speed of the supercritical carbon dioxide heating agent can be greatly improved; meanwhile, the fuel basic copper carbonate capable of improving the fuel speed pressure index is introduced.
The second purpose of the invention is to provide a preparation method of the supercritical carbon dioxide heating agent, which does not need granulation, tabletting and the like, has no dust in the production process, has short production period and low production cost, and can realize continuous mass production.
The first technical scheme adopted by the invention is as follows: the supercritical carbon dioxide heating agent comprises the following components in percentage by mass:
and (2) an adhesive: 1.0 to 3.0 percent;
feel reducing agent: 2% -4%;
oxidizing agent: 68% -75%;
and (3) fuel: 18% -25%;
flame retardant: 0.5 to 1.0 percent.
Preferably, the adhesive is one or more of butadiene rubber, polyisobutylene, polymethyl methacrylate, and polyacrylate rubber.
Preferably, the desensitizing agent is a combination of polyethylene and polypropylene.
Preferably, the oxidizing agent is a combination of potassium perchlorate and ammonium perchlorate.
Preferably, the potassium perchlorate comprises class i and class ii; the granularity d50 of the class I potassium perchlorate is 10-30 mu m, and the content of the class I potassium perchlorate is 15-35% of the total amount of the potassium perchlorate; the granularity d50 of the class II potassium perchlorate is 40-80 mu m, and the content of the class II potassium perchlorate is 55-85% of the total amount of the potassium perchlorate.
Preferably, the particle size d50 of the ammonium perchlorate is 120 μm to 150. Mu.m.
Preferably, the fuel is one or more of Mg powder, mg—li alloy powder and wood carbon powder.
Preferably, the burn rate modifier is a combination of iron oxide and basic copper carbonate.
The second technical scheme adopted by the invention is as follows: a method for preparing a supercritical carbon dioxide heating agent, which comprises the following steps:
s1: adding the adhesive into a solvent for dissolution to prepare an adhesive solution;
s2: sequentially adding a desensitizing agent, an oxidizing agent, fuel and a combustion speed adjusting agent into the adhesive solution, and carrying out sound resonance mixing to obtain slurry;
s3: granulating the slurry, sieving with a mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent.
Preferably, the mass ratio of solvent to binder is 4:1.
The beneficial effects of the technical scheme are that:
(1) The supercritical carbon dioxide heating agent disclosed by the invention does not contain aluminum powder, and avoids the product Al 2 O 3 The agglomeration is not easy to clean on the inner wall of the transmitting cylinder; and in order to obtain supercritical CO with high combustion speed and combustion speed pressure index 2 The formula of the heating agent, wherein a catalyst capable of improving the burning rate is introduced into the heating agent, so that the burning rate of the supercritical carbon dioxide heating agent can be greatly improved; meanwhile, the fuel basic copper carbonate capable of improving the fuel speed pressure index is introduced.
(2) The supercritical carbon dioxide heating agent has the action principle that the sensitivity of the supercritical carbon dioxide heating agent to pressure is adopted, so that a large amount of heat is released by the explosion of the supercritical carbon dioxide heating agent in a short time (millimeter level), thereby enabling supercritical CO 2 The missile body is ejected out by gasification work in a very short time (not more than 1 s), and the ejected launching tube can be reused in a short time.
(3) The vacuum constant volume explosion heat of the supercritical carbon dioxide heating agent disclosed by the invention is not less than 7000J/g, the burning rate and the pressure index of the heating agent are high, and the actual measurement burning rate of 3MPa is more than 150mm/s; a combustion speed pressure index of 1MPa to 10MPa is not lower than 1.0; the heating agent has good safety performance, the friction sensitivity and the impact sensitivity are both 0, and the electrostatic spark sensitivity is more than 180mJ; according to the GJB6195-2008 'composite solid pre-cracking agent dangerous grade classification method', the dangerous grade of the supercritical carbon dioxide heating agent of the invention belongs to the grade 1.3; the working time of the supercritical carbon dioxide heating agent in the supercritical carbon dioxide is less than 1s under the conditions of powder and grain.
(4) The heating agent disclosed by the invention has clean combustion products, and the products are CO 2 No HCl and other corrosive gases are generated.
(5) The heating agent disclosed by the invention does not need the processes of granulating, tabletting and the like, has no dust in the production process, has the advantages of simple production process, short production period and low production cost, does not need heating and curing, and is suitable for continuous large-scale and large-batch production.
(6) The heating agent disclosed by the invention has good compression molding property, is subjected to one-way compression at normal temperature, and has the density of grain (phi 40 mm) not lower than 1.95g/cm when the specific pressure is in the range of 150-200 MPa 3 。
(7) The invention discloses a supercritical carbon dioxide heating agent for CO 2 The ejection solves the problems that the existing AP type gas generating agent has high combustion temperature, the decomposition products contain corrosive gas hydrogen chloride, carbon slag in the combustion products is more, the combustion products are not easy to clean after being remained in the emission cylinder, the temperature of the emission cylinder after ejection is higher, the ejection can not be repeated in a short time, and the like.
Drawings
FIG. 1 is a process flow diagram of a method for preparing a supercritical carbon dioxide heating agent according to the present invention.
Detailed Description
The invention is further illustrated by the following specific examples, which should be understood to those skilled in the art that variations and modifications can be made without departing from the principles of the invention, and these should also be considered to be within the scope of the invention.
What is not described in detail in the present specification belongs to the known technology of those skilled in the art.
The invention discloses a supercritical carbon dioxide heating agent, which comprises the following components in percentage by mass: and (2) an adhesive: 1.0 to 3.0 percent; feel reducing agent: 2% -4%; oxidizing agent: 68% -75%; and (3) fuel: 18% -25%; flame retardant: 0.5 to 1.0 percent; the sum of the mass percentages of the raw materials of the supercritical carbon dioxide heating agent is 100 percent.
The adhesive is one or more of butadiene rubber, polyisobutylene, polymethyl methacrylate and polyacrylate rubber.
The degesting agent is a combination of polyethylene and polypropylene; the number average molecular weight of polyethylene and polypropylene is not more than 600.
The oxidant is a combination of potassium perchlorate (KP) and Ammonium Perchlorate (AP), and KP comprises class I and class II; wherein the particle size d50 of the class I KP is 10-30 mu m, and the content of the class I KP is 15-35% of the total KP; the particle size d50 of class II KP is 40-80 μm, and the content thereof is 55-85% of the total KP; the particle size d50 of the AP is 120-150 mu m, and the content of the AP is 5-10% of the total amount of the oxidant; according to the invention, the granularity grading of the oxidant is adopted, so that on one hand, the obtained heating agent can keep better fluidity, and therefore, the heating agent has higher bulk density; on the other hand, the compressibility of the heating agent can be improved, so that the obtained heating agent grain has higher true density; in addition, the invention adopts the combination of KP and AP oxidant, can greatly improve the reaction speed of the heating agent, and simultaneously, the heating agent keeps better safety performance.
The fuel is one or more of Mg powder, mg-Li alloy powder and wood carbon powder (C powder); wherein the granularity range of the Mg powder is 20 mu m less than or equal to d50 less than or equal to 45 mu m, and the content of the Mg powder is not more than 50% of the total fuel; the granularity range of the Mg-Li alloy powder is more than or equal to 10 mu m and less than or equal to 25 mu m, wherein the mass percentage of Li in the alloy powder is 5%; the particle size range of the powder C is d50 less than or equal to 10 mu m, and the content of the powder C is not more than 20% of the total amount of the fuel.
The combustion speed regulator isIron oxide (Fe) 2 O 3 ) And basic copper carbonate; the particle size range d50 of the combustion speed regulator is less than or equal to 5 mu m.
As shown in fig. 1, the supercritical carbon dioxide heating agent was prepared by the steps of:
s1: adding the adhesive into a solvent to dissolve and prepare an adhesive solution with the concentration of 20%; the solvent is one or a combination of ethyl acetate, tetrahydrofuran, cyclohexane and 120# solvent gasoline, and the mass ratio of the solvent to the adhesive is 4:1;
s2: sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed adjusting agent into an adhesive solution, then adding into an acoustic resonance mixer (25L, 50L), and carrying out acoustic resonance mixing for 30-50 min at 40-50 ℃ to obtain slurry;
s3: granulating the slurry, sieving with an 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent.
The supercritical carbon dioxide heating agent prepared is subjected to the following characterization:
1) Vacuum constant volume blasting heat is detected by referring to GJB 5891.28-2006;
2) The combustion speed and the combustion speed pressure index are detected by referring to the GJB770b method 706.1 combustion speed target line method;
3) Friction sensitivity, impact sensitivity, electrostatic spark sensitivity; the test condition of friction sensitivity is 3.92MPa,90 degrees, and the test condition of impact sensitivity is 10kg,50cm; the test standard of friction sensitivity and impact sensitivity is referred to as GJB770b-2005, and the test standard of electrostatic spark sensitivity is referred to as GJB5891.27-2006;
4) The risk grade is evaluated by referring to GJB6195-2008 'composite solid pre-cracking agent risk grade classification method';
5) Density of the grain.
Example 1
The materials are respectively weighed according to the following formula (calculated according to mass percent):
and (2) an adhesive: butadiene rubber, 1%; polymethyl methacrylate, 1.0%;
feel reducing agent: polyethylene, 4%;
oxidizing agent: class I KP,13%; class ii KP,50%; AP,7%;
and (3) fuel: mg powder, 12%; mg-Li alloy powder; 7%, C powder: 4%;
flame retardant: the iron oxide content is 0.5%; the content of basic copper carbonate is 0.5%;
dissolving butadiene rubber poly (methyl methacrylate) with ethyl acetate and 120# solvent gasoline, and preparing an adhesive solution with the concentration of 20%; sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed regulator into an adhesive solution, then adding the adhesive solution into an acoustic resonance mixer, carrying out acoustic resonance mixing for 50min at 40 ℃ to obtain slurry, granulating the slurry, sieving with a 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent;
measuring each performance of the prepared supercritical carbon dioxide heating agent, wherein the vacuum constant volume explosion heat of the prepared supercritical carbon dioxide heating agent is 7120.6J/g, the pressure index of 1-10 MPa is 1.25, and the burning rate of 3MPa is 108.5mm/s; friction sensitivity was 0%, impact sensitivity was 0, electrostatic spark sensitivity was 185mJ, and hazard class was 1.3; the HCl content in the product is 0; the density of the grain (phi 40 mm) was 1.957g/cm at a specific pressure of 180MPa 3 。
Example 2
The materials are respectively weighed according to the following formula (calculated according to mass percent):
and (2) an adhesive: butadiene rubber, 1%; polyisobutene, 2.0%;
feel reducing agent: polyethylene, 2%; polypropylene, 2%;
oxidizing agent: class I KP,17%; class ii KP,50%; AP,5%;
and (3) fuel: mg powder, 12%; mg-Li alloy powder; 8 percent,
flame retardant: the iron oxide content is 0.3%; the content of basic copper carbonate is 0.7%;
dissolving butadiene rubber polymer and polyisobutene in 120# solvent gasoline to prepare an adhesive solution with the concentration of 20%; sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed regulator into an adhesive solution, then adding the adhesive solution into an acoustic resonance mixer, carrying out acoustic resonance mixing for 30min at 50 ℃ to obtain slurry, granulating the slurry, sieving with a 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent;
measuring each performance of the prepared supercritical carbon dioxide heating agent, wherein the vacuum constant volume explosion heat of the prepared supercritical carbon dioxide heating agent is 7350.5J/g, the pressure index of 1-10 MPa is 1.12, and the burning rate of 3MPa is 105.7mm/s; friction sensitivity is 0%, impact sensitivity is 0, electrostatic spark sensitivity is 190mJ, and hazard class is 1.3; the HCl content in the product is 0; the density of the grain (phi 40 mm) was 1.958g/cm at a specific pressure of 180MPa 3 。
Example 3
The materials are respectively weighed according to the following formula (calculated according to mass percent):
and (2) an adhesive: butadiene rubber: 1%; polyacrylate rubber: 2.0%;
feel reducing agent: polyethylene, 3%; polypropylene: 1%;
oxidizing agent: class I KP,17%; class ii KP,50%; AP,5%;
and (3) fuel: mg powder, 10%; mg-Li alloy powder; 10 percent,
flame retardant: the iron oxide content is 0.5%; the content of basic copper carbonate is 0.5%;
dissolving butadiene rubber and polyacrylate rubber by using 120# solvent gasoline and ethyl acetate, and preparing an adhesive solution with the concentration of 20%; sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed regulator into an adhesive solution, then adding the adhesive solution into an acoustic resonance mixer, carrying out acoustic resonance mixing for 40min at 50 ℃ to obtain slurry, granulating the slurry, sieving with a 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent;
measuring each performance of the prepared supercritical carbon dioxide heating agent, wherein the vacuum constant volume explosion heat of the prepared supercritical carbon dioxide heating agent is 7411.6J/g, the pressure index of 1-10 MPa is 1.20, and the burning rate of 3MPa is 115.8mm/s; friction sensitivity is 0%, impact sensitivity is 0, electrostatic spark sensitivity is 190mJ, and hazard class is 1.3; the HCl content in the product is 0; the density of the grain (phi 40 mm) was 1.958g/cm at a specific pressure of 180MPa 3 。
Example 4
The materials are respectively weighed according to the following formula (calculated according to mass percent):
and (2) an adhesive: butadiene rubber: 1%; polyisobutene: 2.0%;
feel reducing agent: polyethylene, 1%; polypropylene: 2%;
oxidizing agent: class I KP,15%; class ii KP,50%; AP,3%;
and (3) fuel: mg powder, 15%; mg-Li alloy powder; 10 percent,
flame retardant: the iron oxide content is 0.3%; the content of basic copper carbonate is 0.7%;
dissolving butadiene rubber polymer and polyisobutene in 120# solvent gasoline to prepare an adhesive solution with the concentration of 20%; sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed regulator into an adhesive solution, then adding the adhesive solution into an acoustic resonance mixer, carrying out acoustic resonance mixing for 40min at 50 ℃ to obtain slurry, granulating the slurry, sieving with a 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent;
measuring each performance of the prepared supercritical carbon dioxide heating agent, wherein the vacuum constant volume explosion heat of the prepared supercritical carbon dioxide heating agent is 7510.8J/g, the pressure index of 1-10 MPa is 1.18, and the burning rate of 3MPa is 119.3mm/s; friction sensitivity is 0%, impact sensitivity is 0, electrostatic spark sensitivity is 190mJ, and hazard class is 1.3; the HCl content in the product is 0; the density of the grain (phi 40 mm) is 1.955g/cm when the specific pressure is 180MPa 3 。
Example 5
The materials are respectively weighed according to the following formula (calculated according to mass percent):
and (2) an adhesive: butadiene rubber: 1%;
feel reducing agent: polyethylene, 1%; polypropylene: 1%;
oxidizing agent: class I KP,20%; class ii KP,50%; AP,5%;
and (3) fuel: mg powder, 11%; mg-Li alloy powder; 7%;
flame retardant: the iron oxide content is 0.3%; the content of basic copper carbonate is 0.2%;
dissolving butadiene rubber polymer by using 120# solvent gasoline, and preparing the butadiene rubber polymer into an adhesive solution with the concentration of 20%; sequentially adding a desensitizing agent, an oxidizing agent, a fuel and a combustion speed regulator into an adhesive solution, then adding the adhesive solution into an acoustic resonance mixer, carrying out acoustic resonance mixing for 30min at 40 ℃ to obtain slurry, granulating the slurry, sieving with a 18-mesh sieve, and drying to obtain the supercritical carbon dioxide heating agent;
measuring each performance of the prepared supercritical carbon dioxide heating agent, wherein the vacuum constant volume explosion heat of the prepared supercritical carbon dioxide heating agent is 7021.7J/g, the pressure index of 1-10 MPa is 1.03, and the burning rate of 3MPa is 103.2mm/s; friction sensitivity is 0%, impact sensitivity is 0, electrostatic spark sensitivity is 190mJ, and hazard class is 1.3; the HCl content in the product is 0; the density of the grain (phi 40 mm) is 1.951g/cm when the specific pressure is 180MPa 3 。
The invention has been described in detail in connection with the specific embodiments and exemplary examples thereof, but such description is not to be construed as limiting the invention. It will be understood by those skilled in the art that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, and these all fall within the scope of the present invention; the scope of the invention is defined by the appended claims.
Claims (3)
1. The supercritical carbon dioxide heating agent is characterized by comprising the following components in percentage by mass:
and (2) an adhesive: 1.0 to 3.0 percent;
feel reducing agent: 2% -4%;
oxidizing agent: 68% -75%;
and (3) fuel: 18% -25%;
flame retardant: 0.5 to 1.0 percent;
wherein the oxidant is a combination of potassium perchlorate and ammonium perchlorate; the potassium perchlorate comprises class I and class II; the granularity d50 of the class I potassium perchlorate is 10-30 mu m, and the content of the class I potassium perchlorate is 15-35% of the total amount of the potassium perchlorate; the granularity d50 of the class II potassium perchlorate is 40-80 mu m, and the content of the class II potassium perchlorate is 55-85% of the total amount of the potassium perchlorate; the granularity d50 of the ammonium perchlorate is 120-150 mu m;
the fuel is one or more of Mg powder, mg-Li alloy powder and wood carbon powder;
the combustion speed regulator is a composition of ferric oxide and basic copper carbonate, and the particle size range d50 of the combustion speed regulator is less than or equal to 5 mu m;
the adhesive is one or more of butadiene rubber, polyisobutylene, polymethyl methacrylate and polyacrylate rubber;
the degesting agent is a combination of polyethylene and polypropylene.
2. A method of preparing the supercritical carbon dioxide heating agent of claim 1, comprising the steps of:
s1: adding the adhesive into a solvent for dissolution to prepare an adhesive solution;
s2: sequentially adding a desensitizing agent, an oxidizing agent, fuel and a combustion speed adjusting agent into the adhesive solution, and carrying out sound resonance mixing to obtain slurry;
s3: granulating the slurry, sieving with a mesh sieve, and drying to obtain a supercritical carbon dioxide heating agent;
wherein the oxidant is a combination of potassium perchlorate and ammonium perchlorate; the potassium perchlorate comprises class I and class II; the granularity d50 of the class I potassium perchlorate is 10-30 mu m, and the content of the class I potassium perchlorate is 15-35% of the total amount of the potassium perchlorate; the granularity d50 of the class II potassium perchlorate is 40-80 mu m, and the content of the class II potassium perchlorate is 55-85% of the total amount of the potassium perchlorate; the granularity d50 of the ammonium perchlorate is 120-150 mu m;
the fuel is one or more of Mg powder, mg-Li alloy powder and wood carbon powder;
the combustion speed regulator is a composition of ferric oxide and basic copper carbonate, and the particle size range d50 of the combustion speed regulator is less than or equal to 5 mu m.
3. The method for preparing a supercritical carbon dioxide heating agent according to claim 2, wherein the mass ratio of the solvent to the binder is 4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210824714.9A CN115073248B (en) | 2022-07-14 | 2022-07-14 | Supercritical carbon dioxide heating agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210824714.9A CN115073248B (en) | 2022-07-14 | 2022-07-14 | Supercritical carbon dioxide heating agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115073248A CN115073248A (en) | 2022-09-20 |
| CN115073248B true CN115073248B (en) | 2023-10-20 |
Family
ID=83260105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210824714.9A Active CN115073248B (en) | 2022-07-14 | 2022-07-14 | Supercritical carbon dioxide heating agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115073248B (en) |
-
2022
- 2022-07-14 CN CN202210824714.9A patent/CN115073248B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| 崔庆忠，等.《高能炸药与装药设计 第2版》.国防工业出版社,第109页. * |
| 李国平，等.《火炸药物理化学性能》.国防工业出版社,2020,12. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115073248A (en) | 2022-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101270014B (en) | Blast black powder for fireworks | |
| Yuan et al. | Thermal decomposition and combustion characteristics of Al/AP/HTPB propellant | |
| CN102050685B (en) | Micro smoke gun propellant for fireworks | |
| CN106518583B (en) | A kind of meter level superelevation burn rate high energy densified composite and preparation method thereof | |
| CN1132501A (en) | Gas developing agent | |
| US20030097953A1 (en) | Gas generating composition and gas generator | |
| CN108752151A (en) | Safety-type civilian propellant of one kind and preparation method thereof | |
| CN103214322A (en) | Sulfur-smoke-free powder composition and preparation method thereof | |
| CN107754198A (en) | A kind of rapidly and efficiently aerosol extinguishing agent and preparation method | |
| CN113582793A (en) | Carbon nano tube micro-pyrotechnic composition and production method thereof | |
| CN115073248B (en) | Supercritical carbon dioxide heating agent and preparation method thereof | |
| CN106699490A (en) | Safety airbag igniting powder composition and preparation method of safety airbag igniting powder composition | |
| CN108752154B (en) | Composite gas generating agent with wheat scattering combustion effect and preparation method thereof | |
| CN113939346B (en) | Aerosol-forming composition for fire extinguishing | |
| CN104829403A (en) | Low burning temperature pyrotechnic gas generating agent composition | |
| Yelemessova et al. | Energetic Metal–organic frameworks: Thermal behaviors and combustion of nickel oxide (II) based on activated carbon compositions | |
| CN111592435B (en) | Preparation method of light fast-burning material | |
| Zhang et al. | Exploring mechanisms of particle size effects of iron oxide on thermal behaviors and combustion characteristics for 5AT/Sr (NO3) 2 Propellant | |
| CN109232144B (en) | Rubber type high-temperature metal particle generating agent | |
| CN113402348A (en) | Safe and environment-friendly explosive containing permanganate type explosion promoter and preparation method thereof | |
| CN107694001B (en) | A kind of hot-gas sol fire extinguishing agent and preparation method thereof | |
| CN108218642B (en) | Heat-resistant anti-caking superfine ammonium nitrate and preparation method thereof | |
| Mason et al. | Burning rate studies of bis-triaminoguanidinium azotetrazolate (tagzt) and hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (rdx) mixtures | |
| CN111875462A (en) | Ignition powder containing boron-magnesium sintering powder | |
| Zhang et al. | Experimental investigation on impact ignition of Al/PTFE reactive materials |
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 |