CN109297891A - A kind of arid and hot environment outdoor aging accelerated test method of high molecular material - Google Patents
A kind of arid and hot environment outdoor aging accelerated test method of high molecular material Download PDFInfo
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- CN109297891A CN109297891A CN201811242861.5A CN201811242861A CN109297891A CN 109297891 A CN109297891 A CN 109297891A CN 201811242861 A CN201811242861 A CN 201811242861A CN 109297891 A CN109297891 A CN 109297891A
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 230000032683 aging Effects 0.000 title claims abstract description 24
- 238000010998 test method Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 82
- 238000009825 accumulation Methods 0.000 claims abstract description 37
- 230000006353 environmental stress Effects 0.000 claims abstract description 35
- 230000035882 stress Effects 0.000 claims abstract description 18
- 230000007613 environmental effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000002474 experimental method Methods 0.000 claims abstract description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 4
- 238000013139 quantization Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000003908 quality control method Methods 0.000 abstract 1
- 238000004643 material aging Methods 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 5
- 229920002521 macromolecule Polymers 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Environmental & Geological Engineering (AREA)
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of arid and hot environment outdoor aging accelerated test methods of high molecular material, and the standard environment stress accumulation value of the required high molecular material tested is determined including (1)；(2) standard requirements are accelerated to be prepared into sample according to relevant aging high molecular material；(3) control system Control experiment is used；(4) according to high molecular material arid and hot environment test requirements document, the actual environment stress accumulation value of high molecular material is calculated using double environmental factor stress quantitative models；(5) starting testing equipment is tested, and is measured and recorded the temperature, humidity, the irradiation total amount in sampling test face of test specimen, is calculated the actual environment stress accumulation value of high molecular material；(6) when actual environment stress accumulation value reaches standard environment stress accumulation value, entire off-test.This method can carry out arid and hot environment outdoor aging accelerated test to high molecular material, to realize the quality control of the weatherability of Related product.
Description
Technical field
The present invention relates to the arid and hot environment outdoor agings of material aging test method, in particular to a kind of high molecular material to add
Fast test method.
Background technique
It selects suitable test method and equipment is to carry out the base of the evaluation of material aging performance detection and service life research
Plinth.
Currently, mainly using Outdoor exposure test test method, environmental condition is true, but time-consuming general longer, needs several
A month to even longer time several years, and since the environmental conditions such as light, heat, water in natural environment can all become at any time
Change, as a result the test that different time is carried out has certain randomness, test can only be repeated several times and take its statistical value.
Laboratory accelerated test by manual simulation and strengthen influence macromolecule material aging a certain factor or it is several because
Element effect and obtain acceleration effect, experimental condition is controllable, and test repeatability is also guaranteed.But current International Organization for standardization
(ISO) each technical committee relevant to high molecular material is mainly recommended to use in carbon arc lamp exposure test, fluorescent ultraviolet lamp
Exposure test, xenon lamp exposure test and solar radiation simulation test, light source is manual simulation's light source, equal with solar spectrum
It has a certain difference, the difference of especially ultraviolet cut-on point can lead to the change of macromolecule material aging mechanism, test result
Lose authenticity.
In natural environment accelerated test equipment intensification natural environment influence macromolecule material aging one or more environment because
Element, the advantages of combining Outdoor exposure test and laboratory accelerated test, test result correlation is good, while when saving test
Between.
Summary of the invention
The purpose of the present invention is to provide a kind of arid and hot environment outdoor aging accelerated test method of high molecular material, the party
Method can carry out arid and hot environment outdoor aging accelerated test to high molecular material, to realize the quality of the weatherability of Related product
Control.
What above-mentioned purpose of the invention was realized by following technical solution: a kind of arid and hot environment of high molecular material is outdoor
Aging accelerated test method, which is characterized in that this method comprises the following steps:
(1) determine that the received irradiation of institute within certain exposure duration of the required high molecular material tested cooperates with work with temperature
Standard environment stress accumulation value under, the standard environment stress accumulation value can add for subject high molecular material associated aging
Standard value specified in fast testing standard, or the actual measurement according to the Outdoor exposure test of high molecular material in specific arid and hot environment
Data, which calculate, to be determined；
(2) accelerate standard requirements to be prepared into sample according to relevant aging high molecular material, be fixed on sample frame
On, temperature sensor is mounted on the sample back side；
(3) control system Control experiment is used, according to high molecular material arid and hot environment accelerated test test request, to control
Input temp control condition in system, the temperature measured by the sample will when being greater than or equal to the maximum temperature of control system setting
Start overheat protection function, stop test, the temperature measured by the sample continues after the maximum temperature lower than control system setting
Test；
(4) it according to high molecular material arid and hot environment test requirements document, is calculated using double environmental factor stress quantitative models
The actual environment stress accumulation value of high molecular material, double environmental factor stress quantization model formation are as follows:
Wherein, A is to destroy rate constant；
I is the solar irradiation in sampling test face, unit MJ/m2；
T is the time interval calculated, unit s；
E is the truth of a matter of natural logrithm；
Ea is the activation energy of high molecular material, unit J/mol；
R is mol gas constant, R=8.314J/ (molK)；
T is the temperature of sample, and unit is DEG C；
F (I, t) is solar irradiation and the actual environment stress accumulation value that temperature acts synergistically, by temperature I and solar radiation
Amount T is calculated to add up and be obtained, unit MJ/m2；
(5) starting testing equipment is tested, and measures and records the temperature, humidity, sampling test face of test specimen too
Positive irradiation, and the parameter measured is transferred to control system, quantify model formation by double environmental factor stress in (4)
To calculate the actual environment stress accumulation value of high molecular material；
(6) when actual environment stress accumulation value reaches standard environment stress accumulation value, control system termination test, entirely
Off-test.
In the present invention, the high molecular material is ethylene-vinyl acetate copolymer high molecular material.
In the present invention, the arid and hot environment is Turfan arid and hot environment test site.
After the completion of the outdoor aging accelerated test of high molecular material, performance test can be carried out to test specimen material, to it
Weatherability carries out quality evaluation.Equipment of the invention uses the natural atmosphere accelerated exposure test of patent No. ZL 02250367.6
Device carries out program update and exploitation to it, to realize the better natural environment accelerated aging test of correlation.
Compared with prior art, method analog arid and hot environment of the invention carries out outdoor optically focused aging to high molecular material
Accelerated test is accelerated by two environmental factors of temperature and solar irradiation, and is controlled and set by temperature over-range and mark
The mode of quasi stress accumulation value controls test, can be widely applied to the Related products such as material, photovoltaic, automobile
The quality of weatherability controls.
Detailed description of the invention
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is the environmental data tested using test method of the present invention and the part screenshot of sample temperature data；
Fig. 2 is that the remainder for the environmental data and sample temperature data tested using test method of the present invention is cut
Figure.
Specific embodiment
The present embodiment is used for the arid and hot environment of ethylene-vinyl acetate copolymer high molecular material (hereafter abbreviated with EVA)
Outdoor aging accelerated test method, arid and hot environment are Turfan arid and hot environment test site, are included the following steps:
(1) determine that the received irradiation of institute within certain exposure duration of the required high molecular material tested cooperates with work with temperature
Standard environment stress accumulation value under, the standard environment stress accumulation value are that subject high molecular material is tried in associated aging acceleration
Standard value specified in standard inspection standard, can also be according to the actual measurement number of the Outdoor exposure test of high molecular material in specific arid and hot environment
It is determined according to calculating；
(2) accelerate standard requirements to be prepared into sample according to relevant aging high molecular material, be fixed on sample frame
On, temperature sensor is mounted on the sample back side；
(3) control system Control experiment is used, according to high molecular material arid and hot environment accelerated test test request, to control
Input temp control condition in system, the temperature measured by the sample will when being greater than or equal to the maximum temperature of control system setting
Start overheat protection function, stop test, the temperature measured by the sample continues after the maximum temperature lower than control system setting
Test；
(4) it according to high molecular material arid and hot environment test requirements document, is calculated using double environmental factor stress quantitative models
The actual environment stress accumulation value of high molecular material, double environmental factor stress quantization model formations are as follows:
Wherein, A is to destroy rate constant；
I is the solar irradiation in sampling test face, unit MJ/m2；
T is the time interval calculated, unit s；
E is the truth of a matter of natural logrithm；
Ea is the activation energy of high molecular material, unit J/mol；
R is mol gas constant, R=8.314J/ (molK)；
T is the temperature of sample, and unit is DEG C；
F (I, t) is solar irradiation and the actual environment stress accumulation value that temperature acts synergistically, by temperature I and solar radiation
Amount T is calculated to add up and be obtained, unit MJ/m2；
(5) starting testing equipment is tested, and measures and records the temperature, humidity, sampling test face of test specimen too
Positive irradiation, and the parameter measured is transferred to control system, quantify model formation by double environmental factor stress in (4)
Calculate the actual environment stress accumulation value of high molecular material,
It is on September on September 4th, 5,1 2015 by 1 year outdoor experimental data, in example in this application example,
It carries out statistics and calculates stress aggregate-value.
Before experiment, EVA sample is fixedly mounted on Turfan arid and hot environment test site to expose angle 45 degree of angles to the south,
And monitor material surface temperature.The sample of this example is to be cut into sample after press seal is inlayed with high transparent glass in EVA material both sides
Piece, in order to not influence material aging effect, in sample back side mounting temperature sensor.Atmospheric temperature, humidity are monitored simultaneously, and
The solar irradiation etc. of sample surfaces.All instrument 1 data of every 5 minutes records.It unites to 1 year data of sample heavy natural sunning
Meter processing, obtains the extreme value of the surface temperature data of sample, limits warm parameter for setting test.The surface of sample is measured during this
Maximum temperature is 62.4 DEG C, selects 62 DEG C of limit setpoints as outdoor accelerated test.
Environmental data and sample temperature data are listed in same excel table by example, see that Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are
Complete figure.Wherein J is classified as the irradiance data of sample plane, and K is classified as sample temperature data.When L is arranged for calculating each unit
Between the Environmental stress value that accumulates.According to the material property of EVA, activation energy=45kJ/mol is selected, numerical value " 45 " is input to
The value " 8.314 " of N1, R are input to N2, calculate A value herein for convenience and are set to " 1 " and are input to N3.Then formula is utilizedCalculate actual environment stress accumulation value.
Data then input "=J4*300/1000000*EXP (1/ $ N $ of-$ N $, 2/ (K4+ since the 4th row at L4
273.15) it) ", obtains with MJ/m2For the stress accumulation value of 5 minutes sections of unit.Phase is all done to the cell of L column hereafter
The processing answered.Annual 365 days gross accumulation stress aggregate-values are finally calculated in the position L2 input "=sum (L4:L105123) ",
Obtaining stress aggregate-value is 7853.96MJ/m2.The stress aggregate-value is standard environment stress accumulation value, according to specific xeothermic
The measured data of the Outdoor exposure test of high molecular material, which calculates, in environment determines.By EVA macromolecule sample, it is fixed on poly-
On the sample frame of light open air accelerated aging tester.By sample temperature sensor, such as thermocouple, it is mounted on the sample back side.
Then according to high molecular material arid and hot environment accelerated test test request, to the pole of setting system control axis input temp control
Limit condition " 62 ", then sample temperature will start overheat protection function after being higher than 62 DEG C of maximum temperature of setting.
It is set as " 1 " to system control axis program input Ea is set as " 45 " kJ/mol, A value, and according to spitting before this
The outdoor dry heat test that Shandong kind is carried out sets total stress accumulation value " 7853.96 " MJ/ of bicyclic border factors quantization model needs
m2.Start test procedure after completing all settings.Equipment by Automatic-searching solar irradiation maximum direction by the ultraviolet of sunlight and
Visible light part, light gathering reflector to sample surfaces, and actual environment stress accumulation value is calculated in real time, by actual environment stress accumulation
Value is compared with standard environment stress accumulation value；
(6) when actual environment stress accumulation value reaches standard environment stress accumulation value, control system termination test, entirely
Off-test.
Equipment uses the natural atmosphere accelerated exposure test device of patent No. ZL 02250367.6 in the present embodiment, to it
Program update and exploitation are carried out, to realize the better natural environment accelerated aging test of correlation.Testing equipment will be by system
Control axis is uniformly controlled, and by solar azimuth tracking transducer, Automatic-searching solar irradiation maximum direction, and passes through horizontal rotation
Rotary device, vertical rotary device, reflection microscope group, light gathering reflector to sample surfaces.It is dry according to high molecular material before on-test
Thermal environment test requirements document inputs double environmental factor stress to setting system control axis and quantifies model formation.In test process
In, the irradiation level of sample will record in real time, and calculate actual environment stress accumulation value, the reality to sample automatically by system backbone
When border environmental stress accumulating value reaches standard environment stress accumulation value, can be automatically stopped test: control condenser mirror makes sample
Product no longer receive illumination.
The reflection microscope group of equipment only by the Uv and visible light part of sunlight, light gathering reflector to sample surfaces, and generates
The infrared ray of heat hardly reflects, to can be reduced the unnecessary heating of sample, realizes that more preferably temperature controls.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind above content according to the present invention is not departing from this according to the ordinary technical knowledge and customary means of this field
Modification, replacement or change under the premise of inventing above-mentioned basic fundamental thought, to other diversified forms that above structure of the present invention is made
More, it should all fall within the scope and spirit of the invention.
Claims (3)
1. a kind of arid and hot environment outdoor aging accelerated test method of high molecular material, which is characterized in that this method includes as follows
Step:
(1) under the received irradiation of the high molecular material tested required by determining institute within certain exposure duration acts synergistically with temperature
Standard environment stress accumulation value, the standard environment stress accumulation value can for subject high molecular material be tried in associated aging acceleration
Standard value specified in standard inspection standard, or the measured data according to the Outdoor exposure test of high molecular material in specific arid and hot environment
It calculates and determines；
(2) accelerate standard requirements to be prepared into sample according to relevant aging high molecular material, be fixed on sample frame, it will
Temperature sensor is mounted on the sample back side；
(3) control system Control experiment is used, according to high molecular material arid and hot environment accelerated test test request, to control system
Middle input temp control condition, the temperature measured by the sample will startings when being greater than or equal to the maximum temperature of control system setting
Overheat protection function stops test, and the temperature measured by the sample continues to test after the maximum temperature lower than control system setting；
(4) according to high molecular material arid and hot environment test requirements document, high score is calculated using double environmental factor stress quantitative models
The actual environment stress accumulation value of sub- material, double environmental factor stress quantization model formation are as follows:
Wherein, A is to destroy rate constant；
I is the solar irradiation in sampling test face, unit MJ/m2；
T is the time interval calculated, unit s；
E is the truth of a matter of natural logrithm；
Ea is the activation energy of high molecular material, unit J/mol；
R is mol gas constant, R=8.314J/ (molK)；
T is the temperature of sample, and unit is DEG C；
F (I, t) is solar irradiation and the actual environment stress accumulation value that temperature acts synergistically, and is counted by temperature I and solar radiation quantity T
It calculates to add up and obtain, unit MJ/m2；
(5) starting testing equipment is tested, measure and record the temperature of test specimen, humidity, sampling test face sun spoke
It is transferred to control system according to amount, and by the parameter measured, quantifies model formation by double environmental factor stress in (4) to count
Calculate the actual environment stress accumulation value of high molecular material；
(6) when actual environment stress accumulation value reaches standard environment stress accumulation value, control system termination test is entire to test
Terminate.
2. the arid and hot environment outdoor aging accelerated test method of high molecular material according to claim 1, it is characterised in that:
The high molecular material is ethylene-vinyl acetate copolymer high molecular material.
3. the arid and hot environment outdoor aging accelerated test method of high molecular material according to claim 1, it is characterised in that:
The arid and hot environment is Turfan arid and hot environment test site.
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Cited By (3)
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| CN110687037A (en) * | 2019-09-25 | 2020-01-14 | 中国电器科学研究院股份有限公司 | Method for predicting optical performance of polycarbonate material in dry heat environment |
| CN110779684A (en) * | 2019-11-29 | 2020-02-11 | 芜湖安瑞光电有限公司 | Car light fogging detection simulation test device |
| CN110879197A (en) * | 2019-10-17 | 2020-03-13 | 中国电器科学研究院股份有限公司 | Automobile exterior material artificial accelerated photo-thermal aging equivalent irradiation amount calculation method based on ultraviolet irradiation and sample surface temperature |
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Address after: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Applicant after: China Electrical Appliance Research Institute Co.,Ltd. Address before: 510300 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Applicant before: CHINA NATIONAL ELECTRIC APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190201 |