CN105403474B - A kind of composite solidpropellant natural acceleration test device and method - Google Patents
A kind of composite solidpropellant natural acceleration test device and method Download PDFInfo
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- CN105403474B CN105403474B CN201510716538.7A CN201510716538A CN105403474B CN 105403474 B CN105403474 B CN 105403474B CN 201510716538 A CN201510716538 A CN 201510716538A CN 105403474 B CN105403474 B CN 105403474B
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- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 239000004449 solid propellant Substances 0.000 title claims abstract description 36
- 230000001133 acceleration Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 6
- 230000036760 body temperature Effects 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
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- 230000005855 radiation Effects 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 18
- 238000010998 test method Methods 0.000 description 10
- 230000014759 maintenance of location Effects 0.000 description 5
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
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- 239000003380 propellant Substances 0.000 description 2
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- 239000010935 stainless steel Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
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Abstract
A kind of composite solidpropellant natural acceleration test device and method, including rectangular test case, chamber include babinet and case lid, and babinet side is equipped with forced ventilation cooling system, and Temperature and Humidity Control and data collecting system are equipped with outside babinet, specimen mounting is equipped with babinet.Composite solidpropellant natural acceleration test device of the present invention can be positioned over the open air of tropical marine atmospheres environment, and placed with local latitude overturning angle, to reach best endothermic effect, realize and simulate and strengthen solar radiation fuel factor and day and night temperature shock effect, environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation are kept, so as to truly, accurately and rapidly obtain the changing rule of composite solidpropellant mechanical property.
Description
Technical field
The present invention relates to a kind of acceleration test apparatus, more particularly to a kind of natural acceleration examination for composite solidpropellant
Experiment device.The invention further relates to a kind of natural acceleration test method of composite solidpropellant.
Background technology
Composite solidpropellant is the composite material containing energy using macromolecule as matrix, it, with particular characteristic, is solid fire
The energy of arrow engine, its component occur to chemically react and release energy within the engine, make hair using its reaction product
Motivation produces certain thrust.Composite solidpropellant is in storage process, due to being subject to the comprehensive of the factors such as complicated physics, chemistry
Cooperation use, adhesive high polymer may occur solidify afterwards, oxidation cross-linked, chain rupture etc. reaction, its performance gradually change and
Do not reach service index requirement, that is, lose use value, therefore it is the critical material and weakness for limiting engine storage life
Link.Since composite solidpropellant has the characteristics that difficult replacement, maintenance difficult and maintenance cost are high, once generation cracking,
The failures such as deformation can cause missile mishap.Therefore composite solidpropellant performance change information must be grasped, is reasonable
The important judging basis of guided missile storage service life offer are provided.
At present mainly composite solidpropellant performance variation law is obtained using two kinds of test methods both at home and abroad:Storehouse is store
Deposit specimen test method and laboratory accelerated test method.Although storehouse storage specimen test method can obtain more truly, can
The result of the test leaned on, but testing expenses are high, cycle length, it is difficult to meet development, experiment and the requirement of Fast Evaluation.Laboratory accelerates
The advantages of test period is short although test method has, favorable reproducibility, since accelerated test condition and actual storage environment carry
Lotus is variant, for example guided missile is in land storehouse and warship cabin indoor storage, and when war preparedness is on duty outdoors, can undergo harsh
Day and night temperature changes, and the Seasonal Temperature Difference change of fine day, cloudy day, the difference variation in the daytime of rainy day, and spring, summer, autumn and winter, make composite solid
Phenomena such as body propellant is expanded and shunk repeatedly, cracked, embrittlement, sweat analysis, partial crystallization, mechanical property declines rapidly, but real
Test room accelerated test condition can not accurate simulation these temperature difference shock effects, cause accelerated test extrapolating results and actual depot
The uniformity of energy result of variations is poor.
The content of the invention
It is an object of the invention to provide a kind of composite solidpropellant natural acceleration test device, can simulate simultaneously stiffener rings
Border temperature acts on the alternation of composite solidpropellant, accelerates the Heat Ageing of composite solidpropellant, true, rapidly anti-
Reflect the shelf characteric changing rule of composite solidpropellant.
It is another object of the present invention to provide utilize above device solid propellant natural acceleration test for composite
Method.
The object of the present invention is achieved like this, a kind of composite solidpropellant natural acceleration test device, including rectangle
Chamber, chamber include babinet and case lid, and babinet side is equipped with forced ventilation cooling system, humiture control is equipped with outside babinet
System and data collecting system, babinet is interior to be equipped with specimen mounting.Composite solidpropellant natural acceleration test device of the present invention can be placed
Placed in the open air of tropical marine atmospheres environment, and with local latitude overturning angle, to reach best endothermic effect, realize simulation
And strengthen solar radiation fuel factor and day and night temperature shock effect, environment temperature day and night temperature difference circulation, Seasonal Temperature Difference circulation are kept,
So as to changing rule that is true, accurately and rapidly obtaining composite solidpropellant mechanical property.
Above-mentioned forced ventilation cooling system includes being arranged on shutter and return air hole on wall box, the chamber outside the side wall
Aerofoil fan and motor are equipped with vivo, the bottom of box is equipped with air inlet.
When each point temperature uniformity meets or exceeds design temperature in babinet, the ventilation of box house internal air circulation dissipates
Heat, i.e. motor work, and drive centrifugation blade to rotate and produce air quantity, by shutter outlet air, by the return air hole return air under shutter,
Air inlet and aerofoil fan are closed at this time;When the arrival of 1 ceiling temperature of babinet or the maximum temperature more than setting, babinet outer circulation
Aeration-cooling, i.e., aerofoil fan works, and forces to suck outside air from air inlet, and is radiated by aerofoil fan, realizes babinet
Interior cooling.
Temperature and Humidity Control includes Temperature Humidity Sensor and data acquisition and communication controller, humiture with data collecting system
Sensor enters in babinet from the air inlet of the bottom of box to be placed in the middle part of specimen mounting.Temperature Humidity Sensor is used to record chamber
The temperature of interior air, humidity change, data gathering and communication controller by control forced ventilation cooling system motor and
Aerofoil fan working status regulating box body temperature.
In order to reach more preferable heat insulation effect and endothermic effect, insulating layer is arranged on three side walls of babinet, in babinet
Surface spraying has black fluororesin paint, box outer surface spraying solar selective heat-absorbing paint.
Second object of the present invention is achieved in that to be added naturally using above-mentioned device solid propellant for composite
The method of speed experiment, includes the following steps:
1) by chamber slant setting in the open air of tropical marine atmospheres environment, the inclined angle is local latitude
Angle, and babinet is grounded;
2) the composite solidpropellant sample of sealing is put on the specimen mounting in chamber, sets maximum temperature and threshold
Value;
3) open Temperature and Humidity Control and temperature, the humidity of data collecting system record chamber inner air change, control
Temperature in babinet;Open the change of forced ventilation cooling system control cabinet body temperature;
4) discharge.
Above-mentioned steps 3) in, Temperature Humidity Sensor is used to record the temperature of the air in chamber, humidity change, and data are adopted
Collection is with communication controller by controlling the motor and aerofoil fan working status regulating box body temperature of forced ventilation cooling system;
When each point temperature uniformity meets or exceeds the temperature range of setting in babinet, box house internal air circulation ventilation and heat,
I.e. motor works, and drives centrifugation blade to rotate and produces air quantity, by shutter outlet air, by the return air hole return air under shutter, this
When air inlet and aerofoil fan close;When the arrival of babinet ceiling temperature or the maximum temperature more than setting, babinet outer circulation is led to
Wind cools down, i.e., aerofoil fan works, and forces to suck outside air from air inlet, and is radiated by aerofoil fan, realizes in babinet
Cooling.
The present invention has the advantages that:
1st, composite solidpropellant natural acceleration test device of the present invention can be simulated and strengthened solar radiation fuel factor and daytime
Night temperature difference shock effect, and keep environment temperature day and night the temperature difference circulation, Seasonal Temperature Difference circulation the characteristics of, contribute to it is true, accurate,
Rapidly obtain the changing rule of composite solidpropellant mechanical property.
2nd, composite propellant accelerated test method of the present invention is simple and practicable, and accelerated ratio is high, and simulation is strong, result of the test
Accurately and reliably.
Brief description of the drawings
Fig. 1 is composite solidpropellant natural acceleration test apparatus structure schematic diagram of the present invention;
Fig. 2 is the rearview of Fig. 1;
Fig. 3 is the bottom view of Fig. 1.
In figure, 1. babinets, 2. case lids, 3. forced ventilation cooling systems, 3-1. shutters, 4. Temperature and Humidity Controls adopt with data
Collecting system, 5. specimen mountings.
Embodiment
Embodiment, a kind of composite solidpropellant natural acceleration test device, including rectangular chamber, test luggage
Include babinet 1 and case lid 2, babinet 1 is cuboid, outside dimension:Deep 400mm × wide 1780mm × high 1420mm, dead size:It is deep
400mm × wide 1600mm × high 1300mm.1 skeleton of babinet is SUS304 stainless steels, and 1 shell of babinet uses the wire drawing of 1.5mm thickness not
Become rusty steel plate, and 1 inner wall of babinet uses 1.0mm thickness overlay film stainless steel plates.One side wall is equipped with shutter 3-1 and return air hole, shutter
Aerofoil fan and motor are equipped with cavity outside 3-1.Filling thickness is the high-quality insulative of 100mm between the inner wall and shell of side wall
Material glass cotton is as insulating layer.1 bottom of babinet is equipped with air inlet, away from being made at the 150mm of bottom with stainless steel groove bar in babinet 1
Grid type, midfeather 100mm, 200mm, then 100mm, 200mm arrangement are used as specimen mounting 5.Interior sprays black fluorine entirely
Resin paints, and solar selective heat-absorbing paint is sprayed in outer surface entirely.
Temperature and Humidity Control is located at outside babinet 1 with data collecting system 4, by Temperature Humidity Sensor and data gathering and communication control
Device composition processed.Temperature Humidity Sensor enters juxtaposition in babinet 1 for Honeywell Temperature Humidity Sensor and from 1 bottom air inlet mouth of babinet
Between specimen mounting 5, for recording temperature, the humidity change of 1 inner air of babinet;The storage of data gathering and communication controller is adopted
The data of the Temperature and Humidity module of collection simultaneously controls forced ventilation cooling system working status, ensures that temperature upper limit is no more than setting most in babinet 1
High-temperature, the temperature difference are no more than threshold value, keep temperature uniformity in babinet.
Forced ventilation cooling system 3 includes two motors, aerofoil fan and the shutter that the right side of babinet 1 is equipped with.When babinet 1
When interior each point temperature uniformity meets or exceeds given threshold, force motor work, in 1 inner air of babinet circulating ventilation dissipate
Heat;1 bottom air inlet mouth φ 100 of babinet, the sealing of wind top, when the arrival of 1 ceiling temperature of babinet or the maximum temperature more than setting, by force
System sucks outside air from air inlet, and is radiated by aerofoil fan, realizes that babinet cools down.
Using the method for above device solid propellant natural acceleration test for composite, composite solidpropellant is three groups
First composite solidpropellant or four constituent element composite solidpropellants, test procedure are as follows:
(1) the composite solidpropellant test sample is pressed into Type B tensile sample in GJB 770B-2005 methods 413.1
Dumb-bell shape tensile sample is made, preferably using 120mm × 25mm × 10mm specifications;Each detection cycle parallel sample quantity should be many
In 5, keep sample in advance no less than 10.
(2) every 5 parallel samples are placed in 1 loading frock, cured by solid engines when being cooled to 20 DEG C most
Big strain is as strain application value, by the engineering elongation between gages of sample.
(3) sample loaded in frock is put into the cast aluminium waterproof sealing box that waterproofing grade is IP66, and in seal box
Inside it is put into the 1 bag of 200g activated blue silica gel.
(4) 20 DEG C ± 5 DEG C of adjusting ambient temperature, relative humidity are not more than 60%, tighten cast aluminium waterproof sealing box, and with close
Sealing is sealed.
(5) chamber is tilted into 20 ° of open airs for being positioned over tropical marine atmospheres environment, and babinet 1 is grounded;By multiple castings
Aluminium waterproof sealing box is put into chamber, unlatching Temperature and Humidity Control and data collecting system, setting device maximum temperature≤70 DEG C,
Temperature uniformity≤3 DEG C.
(6) in 0d, 10d, 34d, 76d, 171d, 385d, 1 cast aluminium waterproof sealing box is respectively fetched, takes out sample, is utilized
Universal testing machine detects mechanical property.
Experiment for same batch of composite solidpropellant using natural acceleration test of the present invention and storehouse storage test below
Interpretation of result contrasts situation:
1st, acceleration
The result of the test of the result of the test of the embodiment of the present invention and storehouse storage sample is each done at ratio with initial value
Manage (i.e. retai-nedntensile strength), be shown in Table 1.
1 storehouse of table is stored specimen test situation and is contrasted with test situation of the embodiment of the present invention
For 1 data of table, mapped with the maximum tensile strength retention rate to test period, as a result as shown in formula (1), formula (2):
PStorehouse=90.798e-0.0001T……………(1)
PThe present invention=91.186e-0.0007t……………(2)
In formula:PStorehouse--- storehouse stores the maximum tensile strength retention rate of sample aging T time, %;
PThe present invention--- the maximum tensile strength retention rate of aging t times of the embodiment of the present invention, %;
T--- storehouses store specimen test time, d;
T--- test periods of the embodiment of the present invention, d.
Since sample the maximum tensile strength retention rate must be not less than 52.77%.Storehouse is calculated according to formula (1), formula (2) respectively
It is respectively 5427d, 781d that sample, which reaches critical usage time, in room storage sample, the embodiment of the present invention.Thus, obtain with tension
Intensity is that the accelerated ratio that the embodiment of the present invention of judgment basis stores sample corresponding to storehouse is 7 times.
2nd, simulation
For storehouse storage sample, the maximum tensile strength retention rate number of sample different tests time of the embodiment of the present invention
According to sorting respectively by its size is unified, the corresponding ordinal number of each data is its order, is each set to xStorehouse i, xI of the present invention, therefore basis
The performance data size of 1 two kinds of test method tests of table arranges order respectively:
xStorehouse=(1,2,4,3,5,6)
xThe present invention=(1,2,3,4,5,6)
On this basis, order difference d is calculated according to formula (1)i:
di=xStorehouse i-xI of the present invention……………(3)
Obtain storehouse storage specimen test, the embodiment of the present invention and correspond to the order difference of order and be:
D=(0,0,1, -1,0,0)
Rank correlation coefficient rho is calculated according to formula (4)s:
In formula:di--- order is poor;
x1i--- the order of test performance data after storehouse storage specimen test;
x2i--- the order of test performance data after experiment of the embodiment of the present invention;
N --- reference sample group number.
Calculate rank correlation coefficient rhosAs a result it is 0.943, illustrates to have good correlation between two kinds of test methods, this
Invention natural acceleration test can reproduce failure regularity of the solid propellant in actual storehouse storage sample well, and simulation is good
It is good.
Claims (2)
- A kind of 1. method of composite solidpropellant natural acceleration test, it is characterised in that:Including rectangular test case, the experiment Case includes babinet(1)And case lid(2), the babinet(1)Side is equipped with forced ventilation cooling system(3), the babinet(1)It is exterior Equipped with Temperature and Humidity Control and data collecting system(4), the babinet(1)It is interior to be equipped with specimen mounting(5);The forced ventilation cooling system System(4)Including being arranged on babinet(1)Shutter on side wall(3-1)And return air hole, axis stream wind is equipped with the cavity outside the side wall Fan and motor, babinet(1)Bottom is equipped with air inlet;The Temperature and Humidity Control and data collecting system(4)Including temperature and humidity sensing Device and data acquisition and communication controller, the Temperature Humidity Sensor is from babinet(1)The air inlet of bottom enters babinet(1)It is interior; The Temperature Humidity Sensor is multiple and be dispersed in specimen mounting(4)Between;The babinet(1)Side wall be equipped with insulation Layer, the babinet(1)Inner surface spray black fluororesin paints, babinet(1)Outer surface sprays solar selective heat-absorbing paint; Concrete operations include the following steps:By chamber slant setting in the open air of tropical marine atmospheres environment, the inclined angle is local latitude angle, and will Babinet(1)Ground connection;2)The specimen mounting composite solidpropellant sample of sealing being put into chamber(4)On, set maximum temperature and threshold value;3)Open Temperature and Humidity Control and data collecting system(4)Record temperature, the humidity change of chamber inner air, control cabinet Body(1)Interior temperature;Open forced ventilation cooling system(3)The change of control cabinet body temperature;4)Discharging.
- 2. the method for composite solidpropellant natural acceleration test as claimed in claim 1, it is characterised in that:Step 3)In, Specifically, open Temperature and Humidity Control and data collecting system(4)Temperature, the humidity of air in record chamber change and pass through Motor and aerofoil fan control to adjust babinet(1)Interior temperature;Work as babinet(1)Interior each point temperature uniformity meets or exceeds setting During temperature range, babinet(1)Circulating ventilation is radiated in inner air, i.e., motor works, and is driven centrifugation blade to rotate and is produced air quantity, By shutter outlet air, by the return air hole return air under shutter, air inlet and aerofoil fan are closed at this time;Work as babinet(1)The upper limit When temperature arrival or the maximum temperature more than setting, babinet(1)Outer circulation is aeration-cooling, i.e., aerofoil fan work, force from into Air port sucks outside air, and is radiated by aerofoil fan, realizes babinet(1)Interior cooling.
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