CN110231363A - A method of research energetic material reaction mechanism and safety evaluation - Google Patents
A method of research energetic material reaction mechanism and safety evaluation Download PDFInfo
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- CN110231363A CN110231363A CN201910433410.8A CN201910433410A CN110231363A CN 110231363 A CN110231363 A CN 110231363A CN 201910433410 A CN201910433410 A CN 201910433410A CN 110231363 A CN110231363 A CN 110231363A
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- 239000000463 material Substances 0.000 title claims abstract description 90
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 238000011156 evaluation Methods 0.000 title claims abstract description 19
- 238000011160 research Methods 0.000 title claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 51
- 238000012800 visualization Methods 0.000 claims abstract description 36
- 238000002474 experimental method Methods 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 29
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 14
- 239000008246 gaseous mixture Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003380 propellant Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003085 diluting agent Substances 0.000 claims description 6
- 239000002360 explosive Substances 0.000 claims description 5
- 239000012159 carrier gas Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 238000010406 interfacial reaction Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 230000001535 kindling effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 11
- 230000006872 improvement Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
- G01N25/26—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures using combustion with oxygen under pressure, e.g. in bomb calorimeter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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Abstract
The invention discloses a kind of research energetic material reaction mechanism and the method for safety evaluation, this method realizes the record to the energetic material rapidly and uniformly visualization process of thermostimulation load and reaction process using fast compressor and visualization combustion chamber.The heating rate of thermostimulation can reach 2 × 104K/s, thermodynamic parameter are easy to determine and control.This method is applicable in different types of energetic material, and shape is divided into blocky, cotton-shaped and powder.The energetic material dosage is 1-100mg, at low cost, and experiment safety coefficient is high.Using this method, by comparison different experiments as a result, the kindling boundary condition and reaction mechanism of energetic material sample can be obtained.
Description
Technical field
The invention belongs to energetic material reaction mechanism and safety evaluation fields, and in particular to a kind of research energetic material is anti-
The method for answering mechanism and safety evaluation, for studying energetic material kindling and non-ignitable boundary condition, energetic material chemistry
Activity Assessment and the safe handling for instructing energetic material etc..
Background technique
Energetic material be it is a kind of containing explosive group or containing oxidant and combustible, can independently be chemically reacted simultaneously
The compound or mixture for exporting energy, are the important components of military explosive, propellant powder and rocket propulsion agent prescription.In army
Thing field, the energetic material of high energy are inexorable trends.But with the energetic of energetic material, bomb, guided missile and propellant
Safety will be declined, and the practicability of high energy material is influenced.It is dangerous such as to survey the high-energy propellant NEPE that specific impulse is 255s
Property is being gradually increased (for 1.1 grades of dangerous material)；The explosive payload of long-range rocket and long- and medium-range missiles rises to tens from several hundred kilograms
Ton；Furthermore the burn rate of propellant rises to 100mm/s from 2mm/s.When such energetic material is by thermostimulation or impact stimulation
Accident very serious may occur.Therefore for the trend of energetic material development, it is studied by under external condition stimulation
Reaction mechanism and safety evaluation be highly desirable.
The predominantly roasting combustion of the reaction mechanism and security assessment method of energetic material environmental stimuli at present.Roasting combustion experiment is needle
Unexpected thermostimulation may suffer from manufacture, storage, transport and actual combat environment to energetic material and design, for examining
Test severe degree of the ammunition to the sensitivity of unexpected thermostimulation and when reacting.Under normal conditions, combustion experiment is baked to be divided into slowly
Two classes of roasting combustion and fast roasting combustion.Slow roasting combustion experiment is mainly used for reaction type of energetic material when by outside slow heating and grinds
Study carefully.The roasting combustion time is generally in even tens hours several hours.It is relevant dynamic by baking while can obtain energetic material slowly
Mechanics parameter, such as activation energy, pre-exponential factor, generation heat.Due to long the time required to baking slowly, the environmental variance in experimentation is not
It is easy to control；Unlike slow roasting combustion experiment, the main assessment energetic material of fast cook off test experiment is anti-when being burnt by outside
Answer degree.And there are temperature gradients under the conditions of fast cook off test for energetic material.Energetic material safety is carried out using roasting burning method
When test, sample requirements are larger, and the safety for testing itself is poor, at high cost.At the same time, energetic material manufacture, storage,
There are also to be studied for response when being stimulated by quick heat with power in transport and actual combat environment.And for energetic material by outer
Boundary stimulates the research of lower reaction process, rule and mechanism to be more a lack of.It can only take measures to prevent thing by macroscopical experience at present
Therefore occur, it cannot effectively quantify the threshold limit value of energetic material reaction, cannot fundamentally control the hair of burning or detonation
It is raw, constrain the Recent Progresses In The Development of high-performance weapon.
In conclusion the mode of new Quick uniform thermostimulation is developed, so that test is small with energetic material sample size, heating power
State is clear, can study energetic material and have important practical significance to the reaction mechanism and security performance of thermostimulation.
Summary of the invention
The object of the present invention is to provide a kind of research energetic material reaction mechanism and the methods of safety evaluation.This method benefit
It is realized with the characteristic of fast compressor device and tests the mesh such as highly-safe, energetic material sample size is small, Quick uniform thermostimulation
's.
The present invention adopts the following technical scheme that realize:
A method of research energetic material reaction mechanism and safety evaluation, comprising the following steps:
1) in order to study energetic material reaction mechanism and safety, it is first determined the type of energetic material sample, shape and
Weight；
2) component for determining gaseous mixture in fast compressor visualization combustion chamber, that is, determine the volume point of oxygen and carrier gas
Number X1, X2；
3) the gross pressure P for determining gaseous mixture in fast compressor visualization combustion chamber, according to the body of gas each in step 2)
Fraction calculates respective partial pressure using voltage division formulas Pi=P × Xi, i=1,2.；
4) energetic material sample is put into the visualization combustion chamber of fast compressor device, is fired visualization by end cap
Burn room sealing；
5) after vacuumizing the visualization combustion chamber of sealing with vacuum pump, the indoor pressure of pressure sensor record burning is utilized
Power numerical value a0；
6) registration for being filled with oxygen to pressure gauge into visualization combustion chamber is a1, so that a1-a0=P1；
7) registration for being filled with carrier gas to pressure gauge into visualization combustion chamber is a2, so that a2-a1=P2；
8) the indoor energetic material sample of visualization burning and gaseous mixture are compressed using fast compressor, is compressed
In the process using the variation of pressure sensor record visualization internal pressure of combustion chamber, while using high speed camera to energetic material sample
The hot loading procedure of product synchronizes shooting record reaction process；
9) thermodynamic parameter of experiment compression terminal, i.e. compression terminal pressure, the pressure of pressure sensor record are determined
Curve obtains, and compression terminal temperature is calculated by perfect gas adiabatic equation；
10) reaction process of the pressure curve and high speed camera record recorded by pressure sensor, judgement material containing energy
Whether material sample catches fire under this thermodynamic condition tested.
A further improvement of the present invention lies in that the energetic material reaction mechanism is variety classes, shape and weight
Energetic material to heat transfer, phase transformation, the effect of interfacial reaction in the corresponding rule and combustion process of thermostimulation.
A further improvement of the present invention lies in that the energetic material safety evaluation is to obtain Ignition of Energetic Materials achievement
With the critical thermodynamics threshold value to fail and the empirical model for establishing threshold limit value.
A further improvement of the present invention lies in that the energetic material sample is explosive class, propellant powder class and rocket are pushed away
Into agent class.
A further improvement of the present invention lies in that the energetic material shape is blocky, cotton-shaped and powder.
A further improvement of the present invention lies in that the energetic material weight is 1-100mg.
A further improvement of the present invention lies in that the visualization combustion chamber is the cylindrical combustion with silica glass window
Burn room.
A further improvement of the present invention lies in that the diluent gas is nitrogen, argon gas or carbon dioxide gas.
The present invention has following beneficial technical effect:
It 1) is security performance assessing by the invention it is possible to accurately find the boundary condition of energetic material sample kindling
Make significant contribution.The picture that can be shot simultaneously according to high speed camera, is more clear the reaction mechanism of energetic material
It is intuitive to illustrate.
2) present invention provides Quick uniform thermostimulation environment using rapid compression machine, and heating rate is up to 2 × 104K/s,
Easy to operate, thermodynamic parameter is easily controllable.
3) experiment is only 1-100mg with the sample size containing energy, and experiment safety is reliable, at low cost.
4) it by using the different proportion of the diluent gas such as adjustment argon gas, nitrogen, carbon dioxide, realizes in different thermodynamics
Under state, the response condition of energetic material sample.
Detailed description of the invention
Fig. 1 is the fast compressor structural schematic diagram that the present invention uses.
Fig. 2 is the visualization chamber structure schematic diagram that the present invention uses.
Fig. 3 is NC/NG sample of different shapes used in the embodiment of the present invention 1, and Fig. 3 (a) is bulk, and Fig. 3 (b) is wadding
Shape, Fig. 3 (c) are powdered.
Fig. 4 is that the embodiment of the present invention 1 is bent using the pressure under the NC/NG sample of different shapes of pressure sensor acquisition
Line.
Fig. 5 is the pressure curve for the different samples that the embodiment of the present invention 2 is obtained using pressure sensor.
Fig. 6 is that the embodiment of the present invention 3 utilizes the pressure curve under the different thermodynamic parameters of pressure sensor acquisition.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
As shown in Figs. 1-2, fast compressor used in the present invention and visualization chamber structure schematic diagram, including oil
Case 1, compression cylinder 2 visualize chamber system 3, light source 4, high-speed camera 5, the first lens 6, control and acquisition system 7, oil
Cylinder 8, connecting rod 9, driving cylinder 10, metal hose 11, high pressure tank 12, air compressor 13, Hand-operated butterfly valve 14, electric butterfly valve
15, visualize combustion chamber 16, bolt hole 17, objective table 18, fixing bolt 19, energetic material sample 20, quartz glass 21, sealing
Circle 22, form end cap 23, the first reflecting mirror 24, the second reflecting mirror 25 and the second lens 26.
Certain gas is filled with into high pressure tank 12 by air compressor 13 as driving source, and pressure is kept to exist
Substantially constant in Piston Process is driven, high pressure tank 12 is directly connected with driving cylinder 10, and centre is used to equipped with electric butterfly valve 15
Obstruct high pressure gas.Then, sufficiently large oil pressure is provided to it using oil supply system in oil cylinder 8, for withstanding right side high pressure
The driving pressure of air accumulator 12, the electric butterfly valve 15 between high pressure tank 12 and driving cylinder 10 is in open shape at this time
State.High pressure gas in this way in high pressure tank 12 directly with the driving piston contact in driving cylinder 10, will guarantee that compression starts
Driving piston can smoothly push ahead under the driving of high pressure gas later.Gas-powered process is basically completed at this time.Then, scheme
By objective table 18 in 2, energetic material sample 20 is placed on 21 center of quartz glass.It will be quartzy using fixing bolt 19
Glass 21 and visualization combustion chamber 16 are fixed.Light source 4 is opened, the light that light source 4 generates passes through the first lens 6 and the first reflection
Mirror 24, which injects light in visualization combustion chamber 16 by quartz glass 21, illuminates energetic material sample 20, and light is from another
It comes out in a quartz glass 21 and is absorbed with the second lens 26 by high-speed camera 5 by the second reflecting mirror 25, form image.Finally
The draining solenoid valve that control will control simultaneously in hydraulic system with acquisition system 7, pressure sensor and high-speed camera 5.It is logical
Computer-controlled electromagnetic valve opening is crossed, the high pressure oil set up in oil cylinder 8 at this time is flowed back in fuel tank 1, oil cylinder by oil return pipe
Oil pressure in 8 declines rapidly, and the driving force that the high pressure gas in driving cylinder 10 generates can be higher than the system that hydraulic oil generates in oil cylinder 8
The only power of piston motion.Therefore driving piston can advance rapidly under the driving of high pressure gas, realize to visualization combustion chamber 16
Interior 20 instantaneous pressure of energetic material sample impact, the pressure sensor being mounted on visualization combustion chamber 16 at the same time and
The synchronous acquisition for carrying out pressure data and image information of high-speed camera 5.
Embodiment 1:
As shown in figure 3, preparing each 30mg of blocky, cotton-shaped, powder energetic material sample NC/NG respectively.Determine fast ram compression
It is 0.21bar that the group of gaseous mixture, which is divided into oxygen, in contracting machine visualization combustion chamber, and diluent gas uses nitrogen 0.78bar and argon gas
0.5bar.Blocky energetic material sample NC/NG 30mg is put on visualization combustion chamber objective table, will be visualized using end cap
Combustion chamber sealing.
It is vacuumized using vacuum pump by combustion chamber is visualized, and passes through the indoor pressure value of pressure sensor record burning
0.006bar.Be filled with into combustion chamber oxygen to pressure gauge reading be 0.216bar, continue to be filled with nitrogen to pressure gauge reading be
0.996bar, being finally filled with argon gas to pressure gauge reading is 1.496bar.
The indoor bulk NC/NG sample of visualization burning and gaseous mixture are compressed using fast compressor.Pass through
The change curve of pressure sensor recording compressed pressure process, as shown in black curve in Fig. 4.It can must be compressed by pressure curve
Terminal pressure is 27.3bar, and compression terminal temperature is calculated according to perfect gas adiabatic equation as 720K.Fast compressor note
Pressure after the compression terminal of record illustrates that energetic material catches fire if on the rise.There is not pressure to rise explanation to contain
Energy material safety, does not catch fire.It can determine whether 30mg bulk energetic material sample NC/NG in this thermodynamics by pressure curve
Under the conditions of do not catch fire, belong to safe sample.
It repeats the above steps and successively carries out reaction of the NC/NG sample under cotton-shaped and powder shape under phase homogenous quantities 30mg
Mechanism and security evaluation experiment.Red and blue curve in obtained pressure curve such as Fig. 4.By under three kinds of different shapes
The pressure curve of NC/NG energetic material sample compares, it can be found that reaction mechanism is not under different shape for NC/NG sample
Together, security performance also difference.Blocky NC/NG is most stable, and safety coefficient is high.And cotton-shaped NC/NG reactivity highest, most hold
It easily burns, safety is poor.
Embodiment 2:
Powdered each 20mg of energetic material sample RDX and NC/NG is prepared respectively.Determine fast compressor visualization burning
It is 0.21bar that the group of indoor gaseous mixture, which is divided into oxygen, and diluent gas uses nitrogen 0.78bar and argon gas 0.5bar.By powder
Shape energetic material sample RDX 20mg is put on visualization combustion chamber objective table, will visualize combustion chamber sealing using end cap.
It is vacuumized using vacuum pump by combustion chamber is visualized, and passes through the indoor pressure value of pressure sensor record burning
0.0058bar.It is 0.2158bar that oxygen to pressure gauge reading is filled with into combustion chamber, continues to be filled with nitrogen to pressure gauge reading
For 0.9958bar, being finally filled with argon gas to pressure gauge reading is 1.4958bar.
The indoor powdered RDX sample of visualization burning and gaseous mixture are compressed using fast compressor.Pass through
The change curve of pressure sensor recording compressed pressure process, as shown in blue curve in Fig. 5.It can must be compressed by pressure curve
Terminal pressure is 27.0bar, and compression terminal temperature is calculated according to perfect gas adiabatic equation as 718K.Pass through pressure curve
It can determine whether that the powdered energetic material sample RDX of 20mg does not catch fire under this thermodynamic condition, belong to safe sample.
It repeats the above steps and carries out reaction mechanism and safety of the NC/NG sample under the shape of powder under phase homogenous quantities 20mg
Assessment experiment.Red curve in obtained pressure curve such as Fig. 5.Pass through the pressure curve pair to two kinds of different energetic material samples
Than compressing the pressure curve peace on the rise after terminal it can be found that spontaneous combustion has occurred in the NC/NG sample under same shape
Full property is low.And for RDX sample, it is compressed after pressure curve do not rise, illustrate that there is no burnings, it is highly-safe.Phase
With the RDX sample ratio NC/NG sample more stability and security under experiment condition.
Embodiment 3:
Prepare powdered energetic material sample NC/NG 20mg.Determine gaseous mixture in fast compressor visualization combustion chamber
Group be divided into oxygen be 0.21bar, diluent gas use nitrogen 0.78bar.By powdered energetic material sample NC/NG 20mg
It is put on visualization combustion chamber objective table, combustion chamber sealing will be visualized using end cap.
It is vacuumized using vacuum pump by combustion chamber is visualized, and passes through the indoor pressure value of pressure sensor record burning
0.0061bar.It is 0.2161bar that oxygen to pressure gauge reading is filled with into combustion chamber, continues to be filled with nitrogen to pressure gauge reading
For 0.9961bar.
The indoor powdered NC/NG sample of visualization burning and gaseous mixture are compressed using fast compressor.It is logical
The change curve of over-voltage force snesor recording compressed pressure process, as shown in blue curve in Fig. 6.It can must be pressed by pressure curve
Contracting terminal pressure is 16.0bar, and compression terminal temperature is calculated according to perfect gas adiabatic equation as 638K.Pass through pressure song
Line can determine whether that the powdered energetic material sample NC/NG of 20mg does not catch fire under this thermodynamic condition, belong to safe sample
Product.
It repeats the above steps and carries out reaction mechanism and safety of the NC/NG sample under the shape of powder under phase homogenous quantities 20mg
Assessment experiment, the group of gaseous mixture becomes 0.21bar oxygen, 0.78bar nitrogen and 0.5bar argon gas at this time.Obtained pressure is bent
Red curve in line such as Fig. 5.It is compared by the pressure curve to energetic material sample under two kinds of different gaseous mixture ratios, Ke Yifa
Present thermodynamic condition is 27bar, and spontaneous combustion has occurred in the NC/NG sample under 718K, is compressed on the pressure curve after terminal has
It is low to rise trend safety.And for being 16bar in thermodynamic condition, NC/NG sample under 638K, it is compressed after pressure curve
Do not rise, illustrates there is no burning, it is highly-safe.
Claims (8)
1. a kind of method of research energetic material reaction mechanism and safety evaluation, which comprises the following steps:
1) in order to study energetic material reaction mechanism and safety, it is first determined type, shape and the weight of energetic material sample；
2) component for determining gaseous mixture in fast compressor visualization combustion chamber, that is, determine the volume fraction of oxygen and carrier gas
X1,X2；
3) the gross pressure P for determining gaseous mixture in fast compressor visualization combustion chamber, according to the volume of gas each in step 2) point
Number calculates respective partial pressure using voltage division formulas Pi=P × Xi, i=1,2.；
4) energetic material sample is put into the visualization combustion chamber of fast compressor device, combustion chamber will be visualized by end cap
Sealing；
5) after vacuumizing the visualization combustion chamber of sealing with vacuum pump, the indoor number pressure of pressure sensor record burning is utilized
Value a0；
6) registration for being filled with oxygen to pressure gauge into visualization combustion chamber is a1, so that a1-a0=P1；
7) registration for being filled with carrier gas to pressure gauge into visualization combustion chamber is a2, so that a2-a1=P2；
8) the indoor energetic material sample of visualization burning and gaseous mixture are compressed using fast compressor, compression process
The middle variation that visualization internal pressure of combustion chamber is recorded using pressure sensor, while using high speed camera to energetic material sample
Hot loading procedure synchronizes shooting record reaction process；
9) thermodynamic parameter of experiment compression terminal, i.e. compression terminal pressure, the pressure curve of pressure sensor record are determined
It obtains, compression terminal temperature is calculated by perfect gas adiabatic equation；
10) reaction process of the pressure curve and high speed camera record recorded by pressure sensor, judges energetic material sample
Whether product catch fire under this thermodynamic condition tested.
2. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In, the energetic material reaction mechanism is corresponding rule of the energetic material to thermostimulation of variety classes, shape and weight,
And heat transfer, phase transformation, the effect of interfacial reaction in combustion process.
3. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the energetic material safety evaluation is to obtain the critical thermodynamics threshold value of Ignition of Energetic Materials achievement and failure and build
The empirical model of vertical threshold limit value.
4. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the energetic material sample is explosive class, propellant powder class and propellant class.
5. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the energetic material shape is blocky, cotton-shaped and powder.
6. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the energetic material weight is 1-100mg.
7. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the visualization combustion chamber is the cylindrical combustion chamber with silica glass window.
8. the method for a kind of research energetic material reaction mechanism according to claim 1 and safety evaluation, feature exist
In the diluent gas is nitrogen, argon gas or carbon dioxide gas.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323448A (en) * | 2020-04-22 | 2020-06-23 | 中国工程物理研究院总体工程研究所 | Multi-temperature-zone hot baking test device for energetic material product |
| CN111401068A (en) * | 2020-03-23 | 2020-07-10 | 西南科技大学 | Knowledge graph-based explosive formula aided design visualization method and system |
| CN112051184A (en) * | 2020-09-25 | 2020-12-08 | 沈阳理工大学 | Test system and method for roasting and burning experiment of active material in closed container |
| CN112611782A (en) * | 2020-11-30 | 2021-04-06 | 北京理工大学 | Dynamic manometric thermal analysis method for low-melting-point and volatile energetic material |
| CN116696609A (en) * | 2023-06-02 | 2023-09-05 | 西安交通大学 | Method for simulating and analyzing ignition process of propellant in solid rocket engine |
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| CN112611782A (en) * | 2020-11-30 | 2021-04-06 | 北京理工大学 | Dynamic manometric thermal analysis method for low-melting-point and volatile energetic material |
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