CN106404810A - Displacement and radiation damage equivalence evaluation method for aromatic polymer insulating material - Google Patents
Displacement and radiation damage equivalence evaluation method for aromatic polymer insulating material Download PDFInfo
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/03—Investigating materials by wave or particle radiation by transmission
- G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/1006—Different kinds of radiation or particles different radiations, e.g. X and alpha
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- G01N2223/104—Different kinds of radiation or particles ions
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/107—Different kinds of radiation or particles protons
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Abstract
A displacement and radiation damage equivalence evaluation method for an aromatic polymer insulating material relates to an evaluation method for displacement irradiation effect equivalence of different radiation sources for the aromatic polymer insulating material used in a particle radiation environment. The displacement and radiation damage equivalence evaluation method includes the steps of firstly, computing the displacement radiation absorption amounts and the radiation ranges, in to-be-tested material samples, of each radiation source; determining the thicknesses of the to-be-tested material samples according to the radiation ranges, in the to-be-tested material samples, of each radiation source, enabling each radiation source to correspond to one to-be-tested material sample for radiation test and enabling radiation particles of each radiation source to fully penetrate through the thickness of the corresponding to-be-tested material sample; after irradiation, drawing a relation curve about each physical quantity and the displacement radiation absorption amount acquired from micro structure analysis of each radiation source in an irradiation condition and a relation curve about each physical quantity and the displacement radiation absorption amount acquired from a performance test. The displacement and radiation damage equivalence evaluation method is used for evaluating the aromatic polymer insulating material and solves the problem of large error in existing spatial irradiation effect evaluation for the aromatic polymer insulating material in the particle radiation condition.
Description
Technical field
The present invention relates to particle radiation environment aromatic polymer insulant difference irradiation bomb displacement irradiation effect etc.
The property evaluation methodology of effect.
Background technology
Particle radiation environment is included in space charged particle environment (as electronics, proton and heavy ion) and nuclear reaction environment
Neutron.These particles can produce on the structure of material and performance significantly to be affected.
Generally, particle radiation can produce two kinds of effects to material, including ionisation effect and displacement effect, wherein ionisation effect
Make material internal form electron-hole pair, make the group in material powered, form unpaired electron, i.e. free radical, lead to material
Produce crosslinked and degraded.And displacement effect is that atom in material is offed normal, produce scission of link, equally also result in material produce crosslinked
And degraded.
As can be seen here, both effects all can cause the degeneration of material microstructure and performance, will directly affect spacecraft
Life and reliability.Particularly, aromatic polymer insulant has excellent optical property, insulating properties, light because of it
Matter and easy to process the advantages of, on spacecraft and in nuclear reactor environment, there is the extensive of application, such as electric connector and relay
The electrical equipments such as device.
However, being susceptible to particle radiation damage during the in-orbit military service of insulating material of polymer.Particle radiation environment is to polymerization
Thing material produces crosslinked or degraded, thus causing performance to change.Correlational study focused primarily upon irradiation bomb both at home and abroad in the past
The impact to its structure and performance of energy and fluence, and conduct a research mainly for ionisation effect, and for polymeric material material position
The research moving damage effect is less.
Therefore, the evaluation methodology being directed to polymer shifted radiation equivalent damage at present in the world is in blank.This is existing
The evaluation that shape inevitably results in the radiation damage effect of particle radiation environment insulating material of polymer is not accurate enough, thus directly
Have influence on instrument and equipment or even spacecraft reliability of operation and life-span.
Content of the invention
The present invention is to solve existing radiation environment aromatic polymeric materials space radiation Effect Evaluation error
Big problem, the invention provides a kind of shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant.
The shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant, the method comprises the steps：
Step one, the energy according to each radiation source, the chemical constituent of detected materials sample and density, using being based on
The GEANT4 simulation softward of MonteCarlo method, calculates shifted radiation absorbed dose in detected materials sample for each radiation source
And range；
Described each radiation source includes low energy proton, neutron and heavy ion radiation source, and the energy of low energy proton is less than
200keV；
Described detected materials sample is aromatic polymer insulant；
Step 2, according to each radiation source the range in detected materials sample, determine the thickness of detected materials sample, and with
Minimum range in detected materials sample for each radiation source is as the thickness of detected materials sample；
Step 3, take four pieces of detected materials samples, and the thickness of every piece of detected materials sample all determines with step 2
The thickness of detected materials sample is identical, makes the corresponding one piece of detected materials sample of every kind of radiation source carry out irradiation test, makes each radiation
The irradiation particle in source completely penetrates through the thickness of corresponding detected materials sample；
After step 4, irradiation, Micro-Structure Analysis and performance test are carried out to each detected materials sample；
Step 5, the test data being obtained according to step 4, draw microstructure under radiation parameter for each radiation source and divide
The relation curve of each physical quantity and shifted radiation absorbed dose that analysis obtains, and each physical quantity of obtaining of performance test and displacement spoke
Penetrate the relation curve of absorbed dose, as the equivalence evaluation knot of the shifted radiation damage to aromatic polymer insulant
Really.
The analysing content of described Micro-Structure Analysis includes free radical, group and chemical composition；The test of performance test
Content includes mechanical property, dielectric properties, insulating properties and optical property.
In step 5, each physical quantity and the relation curve of shifted radiation absorbed dose that Micro-Structure Analysis obtains are included certainly
By the relation curve of base and the relation curve, group and shifted radiation absorbed dose of shifted radiation absorbed dose and chemical composition with
The relation curve of shifted radiation absorbed dose；
Each physical quantity that performance test obtains includes mechanical property and displacement with the relation curve of shifted radiation absorbed dose
The relation curve of the relation curve of radiation absorbed dose, dielectric properties and shifted radiation absorbed dose, insulating properties and displacement spoke
Penetrate the relation curve of absorbed dose and the relation curve of optical property and shifted radiation absorbed dose.
Described Mechanics Performance Testing meets GB/T 1040-2006 government test standard and requires, and dielectric properties test meets
GB/T 1409-2006 government test standard requires, and insulating properties test meets GB/T 1040-2006 government test standard will
Ask, optical performance test meets GB/T 30983-2014 government test standard and requires.
The beneficial effect that the present invention brings is to send out the shifted radiation to aromatic polymer insulant for the method according to the present invention
Equivalent damage is evaluated, in the case that irradiation particle can completely penetrate through measured material sample integral thickness, different irradiation bombs
The damage that particle all causes to such insulating material of polymer based on displacement damage, the degree of degeneration of material property and irradiation bomb
Unrelated, only relevant with shifted radiation absorbed dose；Equivalent method of the present invention is simple to operate, and the accuracy of evaluation result is high.
Brief description
Fig. 1 is the stream of the shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant of the present invention
Cheng Tu；
Fig. 2 is polyimides (PI) free radical under the conditions of 70keV proton, 110keV proton and 25MeV Ion Irradiation on Multi-walled Carbon
Content is with the evolution curve of shifted radiation absorbed dose；
Fig. 3 is under the conditions of 70keV proton, 110keV proton and 25MeV Ion Irradiation on Multi-walled Carbon, and polyimides (PI) are specific
550nm wavelength radiation damages the evolution curve with displacement absorbed dose；
Fig. 4 is under the conditions of 70keV proton, 110keV proton and 25MeV Ion Irradiation on Multi-walled Carbon, and polyimides (PI) are specific
610nm wavelength radiation damages the evolution curve with displacement absorbed dose；
Fig. 5 is under the conditions of 70keV proton, 110keV proton irradiation, and polyether-ether-ketone (PEEK) free-radical contents are with displacement
The evolution curve of radiation absorbed dose；
Fig. 6 is under the conditions of 70keV proton, 110keV proton irradiation, and polyether-ether-ketone (PEEK) sheet resistance is with displacement spoke
Penetrate the evolution curve of absorbed dose.
Specific embodiment
Specific embodiment one：Referring to Fig. 1, present embodiment is described, the aromatic polymer insulation described in present embodiment
The shifted radiation equivalent damage evaluation methodology of material, the method comprises the steps：
Step one, the energy according to each radiation source, the chemical constituent of detected materials sample and density, using being based on
The GEANT4 simulation softward of MonteCarlo method, calculates shifted radiation absorbed dose in detected materials sample for each radiation source
And range；
Described each radiation source includes low energy proton, neutron and heavy ion radiation source, and the energy of low energy proton is less than
200keV；
Described detected materials sample is aromatic polymer insulant；
Step 2, according to each radiation source the range in detected materials sample, determine the thickness of detected materials sample, and with
Minimum range in detected materials sample for each radiation source is as the thickness of detected materials sample；
Step 3, take four pieces of detected materials samples, and the thickness of every piece of detected materials sample all determines with step 2
The thickness of detected materials sample is identical, makes the corresponding one piece of detected materials sample of every kind of radiation source carry out irradiation test, makes each radiation
The irradiation particle in source completely penetrates through the thickness of corresponding detected materials sample；
After step 4, irradiation, Micro-Structure Analysis and performance test are carried out to each detected materials sample；
Step 5, the test data being obtained according to step 4, draw microstructure under radiation parameter for each radiation source and divide
The relation curve of each physical quantity and shifted radiation absorbed dose that analysis obtains, and each physical quantity of obtaining of performance test and displacement spoke
Penetrate the relation curve of absorbed dose, as the equivalence evaluation knot of the shifted radiation damage to aromatic polymer insulant
Really.
In present embodiment, when curve co-insides under same coordinate relation for each radiation source, then prove that each radiation source can phase
Mutually equivalent, curve under same coordinate relation for each radiation source more levels off to unanimously, then prove that the characteristic of each radiation source more tends to
Unanimously.
In step 2, because the irradiation particle of each radiation source is different in the range of detected materials sample interior, evaluate different
May during the radiation damage effect of insulating material of polymer under the conditions of irradiation bomb (low energy proton, neutron and each gross energy heavy ion)
Two kinds of situations can be run into；
A kind of situation, irradiation particle can completely penetrate through the integral thickness of detected materials sample, can treat material of measuring and monitoring the growth of standing timber
Uniformity is caused to damage it is adaptable to evaluate the overall performance of material；
Another kind of situation, irradiation bomb particle range shorter (less than detected materials thickness of sample), detected materials sample is made
Become heterogeneity to damage it is difficult to evaluate the overall performance of material, be suitable for evaluating surface property.
Therefore, the application is using minimum range in detected materials sample for each radiation source as the thickness of detected materials sample
Degree；The irradiation particle of each radiation source is made to completely penetrate through the thickness of corresponding detected materials sample；Under equal conditions carry out spoke
According to test, improve the degree of accuracy of test result.
After irradiation, Micro-Structure Analysis is carried out to insulating material of polymer, various analysis Instrument equipments pair during test, should be met
The requirement of test sample.Generally, should be tested at short notice after irradiation test, particularly in insulating material of polymer
The test of portion's free radical.
Specific embodiment two：Present embodiment and a kind of aromatic polymer insulation material described in specific embodiment one
The difference of the shifted radiation equivalent damage evaluation methodology of material is, the analysing content of described Micro-Structure Analysis includes freedom
Base, group and chemical composition；The test content of performance test includes mechanical property, dielectric properties, insulating properties and optical property.
Specific embodiment three：Present embodiment and a kind of aromatic polymer insulation material described in specific embodiment two
The difference of the shifted radiation equivalent damage evaluation methodology of material is, in step 5, each physical quantity that Micro-Structure Analysis obtains
Include relation curve, group and the displacement of free radical and shifted radiation absorbed dose with the relation curve of shifted radiation absorbed dose
The relation curve of radiation absorbed dose and the relation curve of chemical composition and shifted radiation absorbed dose；
Each physical quantity that performance test obtains includes mechanical property and displacement with the relation curve of shifted radiation absorbed dose
The relation curve of the relation curve of radiation absorbed dose, dielectric properties and shifted radiation absorbed dose, insulating properties and displacement spoke
Penetrate the relation curve of absorbed dose and the relation curve of optical property and shifted radiation absorbed dose.
Specific embodiment four：Present embodiment and a kind of aromatic polymer insulation material described in specific embodiment one
The difference of the shifted radiation equivalent damage evaluation methodology of material is, described Mechanics Performance Testing meets GB/T 1040-2006
Government test standard requires, and dielectric properties test meets GB/T 1409-2006 government test standard and requires, and insulating properties are tested
Meet GB/T 1040-2006 government test standard to require, optical performance test meets GB/T 30983-2014 government test mark
Alignment request.
From Fig. 2 to Fig. 6, the performance of Polyetherimide and polyether-ether-ketone insulant under different irradiation bomb radiation parameters
Degenerate and shifted radiation absorbed dose can preferably meet certain relation.This illustrates what this material was led to by different irradiation bombs
It is unrelated with irradiation bomb that performance degradation is solely dependent upon shifted radiation absorbed dose.Can be absolutely proved based on above-mentioned analysis result, pin
This insulating material of polymer to Polyetherimide, heavy ion is can be mutually equivalent with different-energy proton irradiation with lower source
's.
Claims (4)
1. the shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant is it is characterised in that the method includes
Following steps：
Step one, the energy according to each radiation source, the chemical constituent of detected materials sample and density, using based on Monte
The GEANT4 simulation softward of Carlo method, calculates shifted radiation absorbed dose in detected materials sample for each radiation source and penetrates
Journey；
Described each radiation source includes low energy proton, neutron and heavy ion radiation source, and the energy of low energy proton is less than 200keV；
Described detected materials sample is aromatic polymer insulant；
Step 2, according to each radiation source the range in detected materials sample, determine the thickness of detected materials sample, and with each spoke
Penetrate minimum range in detected materials sample for the source as the thickness of detected materials sample；
Step 3, take four pieces of detected materials samples, and the thickness of every piece of detected materials sample all with step 2 in determine to be measured
The thickness of material sample is identical, makes the corresponding one piece of detected materials sample of every kind of radiation source carry out irradiation test, makes each radiation source
Irradiation particle completely penetrates through the thickness of corresponding detected materials sample；
After step 4, irradiation, Micro-Structure Analysis and performance test are carried out to each detected materials sample；
Step 5, the test data being obtained according to step 4, draw Micro-Structure Analysis under radiation parameter for each radiation source and obtain
The each physical quantity obtaining and the relation curve of shifted radiation absorbed dose, and each physical quantity of performance test acquisition and shifted radiation suction
Receive the relation curve of dosage, as the equivalence evaluation result of the shifted radiation damage to aromatic polymer insulant.
2. the shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant according to claim 1, its
It is characterised by, the analysing content of described Micro-Structure Analysis includes free radical, group and chemical composition；The test of performance test
Content includes mechanical property, dielectric properties, insulating properties and optical property.
3. the shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant according to claim 2, its
It is characterised by, in step 5, each physical quantity that Micro-Structure Analysis obtains is included with the relation curve of shifted radiation absorbed dose
The relation curve of relation curve, group and shifted radiation absorbed dose of free radical and shifted radiation absorbed dose and chemical composition
Relation curve with shifted radiation absorbed dose；
Each physical quantity that performance test obtains includes mechanical property and shifted radiation with the relation curve of shifted radiation absorbed dose
The relation curve of the relation curve of absorbed dose, dielectric properties and shifted radiation absorbed dose, insulating properties and shifted radiation are inhaled
Receive the relation curve of dosage and the relation curve of optical property and shifted radiation absorbed dose.
4. the shifted radiation equivalent damage evaluation methodology of aromatic polymer insulant according to claim 1, its
It is characterised by, described Mechanics Performance Testing meets GB/T 1040-2006 government test standard and requires, dielectric properties test is full
Sufficient GB/T 1409-2006 government test standard requires, and insulating properties test meets GB/T 1040-2006 government test standard will
Ask, optical performance test meets GB/T 30983-2014 government test standard and requires.
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