CN104535596A - Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree - Google Patents
Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree Download PDFInfo
- Publication number
- CN104535596A CN104535596A CN201410686079.8A CN201410686079A CN104535596A CN 104535596 A CN104535596 A CN 104535596A CN 201410686079 A CN201410686079 A CN 201410686079A CN 104535596 A CN104535596 A CN 104535596A
- Authority
- CN
- China
- Prior art keywords
- test
- aging
- relative content
- sio
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The invention provides a method using silicon hydroxyl relative content for analysis of silicone rubber aging degree, and belongs to the technical field of silicone rubber aging degree analysis method. Through four steps of silicone rubber hot oxygen aging experiment, X-diffraction photoelectron spectroscopy test and nuclear magnetic resonance test of an aged specimen, analysis of results of theXPS (X-ray photoelectron spectroscopy) and NMR (nuclear magnetic resonance) tests, and use of silicon hydroxyl relative content for characterization of aging mechanism, the method using silicon hydroxyl relative content for analysis of silicone rubber aging degree can be realized. The method fills the blank of research on silicone rubber aging mechanisms in the prior art, silicon hydroxyl relative content changes can be analyzed according to experimental data of NMR and X-ray photoelectron spectroscopy tests, the silicone rubber aging process mechanisms can be speculated, and the method is a simple but practical method for the analysis of the mechanism of silicon rubber, and has great significance to study on the aging mechanism of the silicon rubber.
Description
Technical field
The present invention relates to a kind of method utilizing silicone hydroxyl ratio analysis silicon rubber degree of aging, belong to the method and technology field analyzing silicon rubber degree of aging.
Background technology
Rubber is the strong flexible polymer material with reversible deformation, is widely used in and manufactures in tire, sebific duct, adhesive tape, cable and other rubbers.
Silicon rubber in rubber synthetic material is typical half inorganics half organic polymer, both there is the thermotolerance of inorganic polymer thing, there is again organic macromolecule compliance, be thus widely used in the sophisticated industry such as space flight, aviation as Nai Gaore and low temperature resistant rubber packing material.But rubber parts is by the impact of internal and external factor in its military service process, and mechanical property etc. can decline gradually and then lose use value.Even if in the relatively short military service process of rubber parts, the aging and degradation problem of rubber parts is still the key factor affecting its storage reliability.And the immediate cause that after ageing of rubber, physical property declines is exactly that elastomeric material there occurs chemical reaction, strand and functional group there occurs change, and the agine mechaism after therefore studying ageing of rubber is the basic of performance change after research ageing of rubber.Fundamentally can also be understood the reason of ageing of rubber by the agine mechaism after research ageing of rubber, for the research of the ageing-resistant aspect of elastomeric material provides foundation, play an important role in follow-up study ageing of rubber.
Not deep enough to the research of ageing of rubber mechanism at present, be the experiments such as simple infrared spectrum, especially for silastic material, neither one well characterizes the index of its agine mechaism, can not well describe its agine mechaism.
Summary of the invention
The object of the invention is to solve above-mentioned prior art Problems existing, namely the current research to ageing of rubber mechanism is not deep enough, be the experiments such as simple infrared spectrum, especially for silastic material, neither one well characterizes the index of its agine mechaism, can not well describe its agine mechaism.And then a kind of method utilizing silicone hydroxyl ratio analysis silicon rubber degree of aging is provided.
The object of the invention is to be achieved through the following technical solutions:
Utilize a method for silicone hydroxyl ratio analysis silicon rubber degree of aging,
The thermo-oxidative ageing experiment of step one, silicon rubber
First hot oxygen accelerated aging test is carried out to silicone rubber test pieces.The fixture of experiment is the compression clamp that machining manufacturing plant of Harbin Institute of Technology manufactures, and it is of a size of 240x 30x 18mm.The hot-air exchange test case that the thermo-oxidative ageing case of testing provides for Wuxi Ke Laimu environmental science and technology company limited, its operating room is of a size of 450x 450x 500mm, temperature fluctuation≤± 0.5K.
Silicon rubber baking oven accelerated aging test is carried out with reference to GB GB/T 3512; Before test specimen is put into ageing oven, according to GB/T2941-2006 " test material preparation of rubber physical test method and adjustment universal program ", pre-service is carried out to all test specimens; With reference to GB GB/T 1683, put into by test specimen among fixture, put 4 test specimens in each fixture, the spacing of each test specimen is greater than 5mm, compressibility 25%.According to the regulation in ISO:11346-2004 " assessment of sulfuration or thermoplastic rubber-serviceable life and maximum operation (service) temperature ", the time that the highest test temperature should make material property reach critical value is not less than 100h; The time that minimum test temperature should make material property reach critical value is at least 1000h.The selection of test temperature need meet GB/T 2941-2006.According to " test material preparation of rubber physical test method and regulate universal program ", selected 250 DEG C, 180 DEG C, 165 DEG C, 150 DEG C, 135 DEG C and 120 DEG C are as silicon rubber accelerated test temperature spot.
Step 2, aging test specimen carried out to the test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test
The test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test are carried out respectively to the aging test specimen after oxygen accelerated deterioration hot under condition of different temperatures in step one.The experiment condition of XPS is: the Al Ka source of X source monochromatization, energy: 1486.6eV, 10mA × 15KV, bundle spot size: 700 × 300 μm; Scan pattern: CAE; Full spectrum scanning: logical can be 160eV.
Nuclear magnetic resonance apparatus is Bruker AVANCE III 400WB.Nuclear magnetic spectrometry is equipped with the gauge orifice of 4 millimeters, and the X passage of its probe is 79.50 megahertzes, and other passages carry out adjusting to 400 megahertzes.Dry fine-powdered sample is contained in closed titanium rotor, rotates with the frequency of 5kHZ.10000 scanning is carried out altogether and record to each sample.
The element spectrogram of the silicon rubber under different aging condition is obtained by the test of XPS and nuclear magnetic resonance.
Step 3, XPS and NMR test result to be analyzed
Can find from the result of XPS, along with the increase of aging temperature and digestion time, in silastic material, C element content reduces gradually, and O constituent content increases gradually, carries out peak-fit processing to element silicon, and Si element has following three kinds of chemical environment SiO in siloxane
2c
2, SiO
3c, SiO
4chemical bond energy position corresponding is respectively 101.9,102.8,103.6.The peak of these three chemical bond energy positions is carried out to the calculating of peak area, draw the relative scale of these three kinds of environment under different aging condition.Under discovery is all aging 57h, along with aging temperature is increased to 150 DEG C again to 180 DEG C by 120 DEG C, SiO
2c
2relative content from 51% to 27% again to 23%, to reduce gradually, and SiO
3the relative content of C from 43% to 48% again to 63% in raising trend gradually.The increase facing to aging temperature and digestion time can be seen from the result of nuclear magnetic resonance.The relative content of silicone hydroxyl reduces, and SiO
3c and SiO
4relative content be increase.
Step 4, utilize silicone hydroxyl relative content characterize agine mechaism
Found out by data result, along with the increase of aging temperature and digestion time, the relative content of silicone hydroxyl is in reduction, and SiO
3c and SiO
4relative content be increase.Found out by the change of the relative content of silicone hydroxyl thus, silicon rubber main side base that occurs in ageing process is aging formation silicone hydroxyl, but along with aging carrying out, silicone hydroxyl attack siloxane main chain forms cross-linked structure and ring texture.
The method utilizing silicone hydroxyl ratio analysis silicon rubber degree of aging of the present invention, the method has filled up the blank before to silicon rubber agine mechaism research aspect, by the change of the relative content of the analysis of experimental data silicone hydroxyl of nuclear magnetic resonance and X diffraction Photoelectron Spectroscopy Experiment, just can infer the mechanism of silicon rubber in ageing process, be a kind of simple but silicon rubber mechanism based method analysis of practicality, have very large meaning to research silicon rubber agine mechaism aspect later.In addition, it is accurate that the present invention also has analysis result, is easy to the feature operated.
Embodiment
The present invention is described in further detail below: the present embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment, but protection scope of the present invention is not limited to following embodiment.
A kind of method utilizing silicone hydroxyl ratio analysis silicon rubber degree of aging involved by the present embodiment, concrete operation step is as follows:
The thermo-oxidative ageing experiment of step one, silicon rubber
First hot oxygen accelerated aging test is carried out to silicone rubber test pieces.The fixture of experiment is the compression clamp that machining manufacturing plant of Harbin Institute of Technology manufactures, and it is of a size of 240x 30x 18mm.The hot-air exchange test case that the thermo-oxidative ageing case of testing provides for Wuxi Ke Laimu environmental science and technology company limited, its operating room is of a size of 450x 450x 500mm, temperature fluctuation≤± 0.5K.
Silicon rubber baking oven accelerated aging test is carried out with reference to GB GB/T 3512; Before test specimen is put into ageing oven, according to GB/T2941-2006 " test material preparation of rubber physical test method and adjustment universal program ", pre-service is carried out to all test specimens; With reference to GB GB/T 1683, put into by test specimen among fixture, put 4 test specimens in each fixture, the spacing of each test specimen is greater than 5mm, compressibility 25%.According to the regulation in ISO:11346-2004 " assessment of sulfuration or thermoplastic rubber-serviceable life and maximum operation (service) temperature ", the time that the highest test temperature should make material property reach critical value is not less than 100h; The time that minimum test temperature should make material property reach critical value is at least 1000h.The selection of test temperature need meet GB/T 2941-2006.According to " test material preparation of rubber physical test method and adjustment universal program ", selected 250 DEG C, 180 DEG C, 165 DEG C, 150 DEG C, 135 DEG C, 120 DEG C as silicon rubber accelerated test temperature spot.
Step 2, aging test specimen carried out to the test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test
The test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test are carried out respectively to the aging test specimen after oxygen accelerated deterioration hot under condition of different temperatures in step one.The experiment condition of XPS is: the Al Ka source of X source monochromatization, energy: 1486.6eV, 10mA × 15KV, bundle spot size: 700 × 300 μm; Scan pattern: CAE; Full spectrum scanning: logical can be 160eV.
Nuclear magnetic resonance apparatus is Bruker AVANCE III 400WB.Nuclear magnetic spectrometry is equipped with the gauge orifice of 4 millimeters, and the X passage of its probe is 79.50 megahertzes, and other passages carry out adjusting to 400 megahertzes.Dry fine-powdered sample is contained in closed titanium rotor, rotates with the frequency of 5kHZ.10000 scanning is carried out altogether and record to each sample.
The element spectrogram of the silicon rubber under different aging condition is obtained by the test of XPS and nuclear magnetic resonance.
Step 3, XPS and NMR test result to be analyzed
Can find from the result of XPS, along with the increase of aging temperature and digestion time, in silastic material, C element content reduces gradually, and O constituent content increases gradually, carries out peak-fit processing to element silicon, and Si element has following three kinds of chemical environment SiO in siloxane
2c
2, SiO
3c, SiO
4chemical bond energy position corresponding is respectively 101.9,102.8,103.6.The peak of these three chemical bond energy positions is carried out to the calculating of peak area, draw the relative scale of these three kinds of environment under different aging condition.Under discovery is all aging 57h, along with aging temperature is increased to 150 DEG C again to 180 DEG C by 120 DEG C, SiO
2c
2relative content from 51% to 27% again to 23%, to reduce gradually, and SiO
3the relative content of C from 43% to 48% again to 63% in raising trend gradually.The increase facing to aging temperature and digestion time can be seen from the result of nuclear magnetic resonance.The relative content of silicone hydroxyl reduces, and SiO
3c and SiO
4relative content be increase.
Step 4, utilize silicone hydroxyl relative content characterize agine mechaism
Found out by data result, along with the increase of aging temperature and digestion time, the relative content of silicone hydroxyl is in reduction, and SiO
3c and SiO
4relative content be increase.Can be found out by the change of the relative content of silicone hydroxyl thus, silicon rubber main side base that occurs in ageing process is aging formation silicone hydroxyl, but along with aging carrying out, silicone hydroxyl attack siloxane main chain forms cross-linked structure and ring texture.
The present embodiment adopts the quantity of silicone hydroxyl as investigation point, describe a kind of method utilizing silicone hydroxyl quantitative analysis silicon rubber agine mechaism, the agine mechaism of silastic material is conducted in-depth research, X diffraction Photoelectron Spectroscopy Experiment and nuclear magnetic resonance experiment is used comprehensively to analyze the change of silicone hydroxyl relative content, clearly can symbolize the agine mechaism of silicon rubber, follow-up research work is had great significance.
The above; be only the present invention's preferably embodiment; these embodiments are based on the different implementations under general idea of the present invention; and protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. utilize a method for silicone hydroxyl ratio analysis silicon rubber degree of aging, it is characterized in that,
The thermo-oxidative ageing experiment of step one, silicon rubber
First hot oxygen accelerated aging test is carried out to silicone rubber test pieces, the fixture of experiment is the compression clamp that machining manufacturing plant of Harbin Institute of Technology manufactures, it is of a size of 240x30x18mm, the hot-air exchange test case that the thermo-oxidative ageing case of testing provides for Wuxi Ke Laimu environmental science and technology company limited, its operating room is of a size of 450x450x500mm, temperature fluctuation≤± 0.5K;
Silicon rubber baking oven accelerated aging test is carried out with reference to GB GB/T 3512; Before test specimen is put into ageing oven, according to GB/T2941-2006 " test material preparation of rubber physical test method and adjustment universal program ", pre-service is carried out to all test specimens; With reference to GB GB/T 1683, put into by test specimen among fixture, put 4 test specimens in each fixture, the spacing of each test specimen is greater than 5mm, compressibility 25%; According to the regulation in ISO:11346-2004 " assessment of sulfuration or thermoplastic rubber-serviceable life and maximum operation (service) temperature ", the time that the highest test temperature should make material property reach critical value is not less than 100h; The time that minimum test temperature should make material property reach critical value is at least 1000h; The selection of test temperature need meet GB/T 2941-2006; According to " test material preparation of rubber physical test method and regulate universal program ", selected 250 DEG C, 180 DEG C, 165 DEG C, 150 DEG C, 135 DEG C and 120 DEG C are as silicon rubber accelerated test temperature spot;
Step 2, aging test specimen carried out to the test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test
The test of X diffraction light electronic energy spectrum and nuclear magnetic resonance test are carried out respectively to the aging test specimen after oxygen accelerated deterioration hot under condition of different temperatures in step one, the experiment condition of XPS is: the Al Ka source of X source monochromatization, energy: 1486.6eV, 10mA × 15KV, bundle spot size: 700 × 300 μm; Scan pattern: CAE; Full spectrum scanning: logical can be 160eV;
Nuclear magnetic resonance apparatus is Bruker AVANCE III 400WB, nuclear magnetic spectrometry is equipped with the gauge orifice of 4 millimeters, the X passage of its probe is 79.50 megahertzes, other passages carry out adjusting to 400 megahertzes, dry fine-powdered sample is contained in closed titanium rotor, rotate with the frequency of 5kHZ, 10000 scanning is carried out altogether and record to each sample;
The element spectrogram of the silicon rubber under different aging condition is obtained by the test of XPS and nuclear magnetic resonance;
Step 3, XPS and NMR test result to be analyzed
Can find from the result of XPS, along with the increase of aging temperature and digestion time, in silastic material, C element content reduces gradually, and 0 constituent content increases gradually, carries out peak-fit processing to element silicon, and Si element has following three kinds of chemical environment SiO in siloxane
2c
2, SiO
3c, SiO
4chemical bond energy position corresponding is respectively 101.9,102.8,103.6; The peak of these three chemical bond energy positions is carried out to the calculating of peak area, draw the relative scale of these three kinds of environment under different aging condition; Under discovery is all aging 57h, along with aging temperature is increased to 150 DEG C again to 180 DEG C by 120 DEG C, SiO
2c
2relative content from 51% to 27% again to 23%, to reduce gradually, and SiO
3the relative content of C from 43% to 48% again to 63% in raising trend gradually; Can see the increase facing to aging temperature and digestion time from the result of nuclear magnetic resonance, the relative content of silicone hydroxyl reduces, and SiO
3c and SiO
4relative content be increase;
Step 4, utilize silicone hydroxyl relative content characterize agine mechaism
Found out by data result, along with the increase of aging temperature and digestion time, the relative content of silicone hydroxyl is in reduction, and SiO
3c and SiO
4relative content be increase; Can be found out by the change of the relative content of silicone hydroxyl thus, silicon rubber main side base that occurs in ageing process is aging formation silicone hydroxyl, but along with aging carrying out, silicone hydroxyl attack siloxane main chain forms cross-linked structure and ring texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686079.8A CN104535596A (en) | 2014-06-30 | 2014-11-25 | Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410304495.7A CN104048911A (en) | 2014-06-30 | 2014-06-30 | Method for analyzing aging degree of silicone rubber according to relative content of silicon hydroxyl |
| CN2014103044957 | 2014-06-30 | ||
| CN201410686079.8A CN104535596A (en) | 2014-06-30 | 2014-11-25 | Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104535596A true CN104535596A (en) | 2015-04-22 |
Family
ID=51502033
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410304495.7A Pending CN104048911A (en) | 2014-06-30 | 2014-06-30 | Method for analyzing aging degree of silicone rubber according to relative content of silicon hydroxyl |
| CN201410686079.8A Pending CN104535596A (en) | 2014-06-30 | 2014-11-25 | Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410304495.7A Pending CN104048911A (en) | 2014-06-30 | 2014-06-30 | Method for analyzing aging degree of silicone rubber according to relative content of silicon hydroxyl |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104048911A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301031A (en) * | 2015-12-01 | 2016-02-03 | 中山大学 | Method for determining hydrogen-containing silicone oil residual quantity in trisiloxane surfactant by one-dimensional hydrogen nuclear magnetic resonance method |
| CN106124292A (en) * | 2016-06-15 | 2016-11-16 | 北京航空航天大学 | A kind of method of O shape rubber parts store failure mechanism |
| CN106501296A (en) * | 2016-10-18 | 2017-03-15 | 广州天赐高新材料股份有限公司 | The detection method of silicon hydrogen content in organosilicon polymer |
| CN108195866A (en) * | 2018-01-08 | 2018-06-22 | 国网河北省电力有限公司电力科学研究院 | A kind of determination method of composite insulator silicon rubber degree of aging |
| CN110865141A (en) * | 2019-12-10 | 2020-03-06 | 南京曙光精细化工有限公司 | Method for analyzing absolute content of polysulfide silane coupling agent monomer |
| CN111965131A (en) * | 2020-09-29 | 2020-11-20 | 海南电网有限责任公司电力科学研究院 | Composite insulator aging evaluation method based on infrared spectrum characteristic peak ratio method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076136A (en) * | 2014-06-30 | 2014-10-01 | 哈尔滨工业大学 | Method for analyzing aging mechanism of silicone rubber by utilizing variable activation energy |
| CN105158085B (en) * | 2015-10-26 | 2018-01-26 | 洛阳轴研科技股份有限公司 | A kind of Forecasting Methodology of compound polyimide retainer storage life |
| CN107817258B (en) * | 2017-10-24 | 2020-01-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Liquid silicone rubber aging degree evaluation method based on X-ray diffraction spectrum peak-splitting fitting |
| CN111812141A (en) * | 2020-07-10 | 2020-10-23 | 赛轮集团股份有限公司 | Test method for evaluating coupling capacity of white carbon black and silane coupling agent |
-
2014
- 2014-06-30 CN CN201410304495.7A patent/CN104048911A/en active Pending
- 2014-11-25 CN CN201410686079.8A patent/CN104535596A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 蒋沙沙: "硅橡胶加速老化及失效机理研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301031A (en) * | 2015-12-01 | 2016-02-03 | 中山大学 | Method for determining hydrogen-containing silicone oil residual quantity in trisiloxane surfactant by one-dimensional hydrogen nuclear magnetic resonance method |
| CN105301031B (en) * | 2015-12-01 | 2017-06-27 | 中山大学 | The method that one-dimensional nuclear magnetic resonance hydrogen spectrometry determines containing hydrogen silicone oil residual quantity in trisiloxane surfactant |
| CN106124292A (en) * | 2016-06-15 | 2016-11-16 | 北京航空航天大学 | A kind of method of O shape rubber parts store failure mechanism |
| CN106124292B (en) * | 2016-06-15 | 2018-10-02 | 北京航空航天大学 | A kind of method of O shapes rubber parts store failure mechanism |
| CN106501296A (en) * | 2016-10-18 | 2017-03-15 | 广州天赐高新材料股份有限公司 | The detection method of silicon hydrogen content in organosilicon polymer |
| CN106501296B (en) * | 2016-10-18 | 2018-08-24 | 广州天赐高新材料股份有限公司 | The detection method of silicon hydrogen content in organosilicon polymer |
| CN108195866A (en) * | 2018-01-08 | 2018-06-22 | 国网河北省电力有限公司电力科学研究院 | A kind of determination method of composite insulator silicon rubber degree of aging |
| CN108195866B (en) * | 2018-01-08 | 2020-10-02 | 国网河北省电力有限公司电力科学研究院 | Method for judging silicone rubber aging degree of composite insulator |
| CN110865141A (en) * | 2019-12-10 | 2020-03-06 | 南京曙光精细化工有限公司 | Method for analyzing absolute content of polysulfide silane coupling agent monomer |
| CN110865141B (en) * | 2019-12-10 | 2022-05-13 | 南京曙光精细化工有限公司 | Method for analyzing absolute content of polysulfide silane coupling agent monomer |
| CN111965131A (en) * | 2020-09-29 | 2020-11-20 | 海南电网有限责任公司电力科学研究院 | Composite insulator aging evaluation method based on infrared spectrum characteristic peak ratio method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104048911A (en) | 2014-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535596A (en) | Method using silicon hydroxyl relative content for analysis of silicone rubber aging degree | |
| CN104634950B (en) | A kind of utilization becomes the method that energy of activation analyzes silicon rubber agine mechaism | |
| Chen et al. | Micro characterization and degradation mechanism of liquid silicone rubber used for external insulation | |
| KR101751073B1 (en) | Portable polymer tester | |
| CN109614755A (en) | A method of braiding ceramic matric composite fatigue at high temperature fiber/matrix shear stress on interface is predicted by sluggish Dissipated energy | |
| CN106404643B (en) | A kind of nitrile rubber accelerated test mechanism coherence method based on the physics of failure | |
| CN112345435A (en) | Composite insulator silicon rubber humid heat aging performance test and evaluation method | |
| CN106248917A (en) | A kind of power station equipment liquid silastic aging assessment | |
| CN113884794A (en) | Method for evaluating main insulation aging state of motor wire bar | |
| CN109521337A (en) | A kind of electrostrictive polymer branch characteristic measuring device and method based on ultrasonic method | |
| CN109297896B (en) | Method for evaluating aging mechanism consistency of composite solid propellant | |
| Zhang et al. | Dielectric properties characterization and evaluation of commercial silicone gels for high-voltage high-power power electronics module packaging | |
| Pirc et al. | Cable aging monitoring with differential scanning calorimetry (DSC) in nuclear power plants | |
| Yang et al. | Study on ageing characteristics and evaluation methods of RTV silicone rubber in high humidity area | |
| Hou et al. | Effects of composite reinforcing filler, vulcanizing temperature, and pressure on mechanical properties of gasket material for proton exchange membrane fuel cells | |
| Kunheng et al. | Rubber aging life prediction based on interpolation and improved time-temperature superposition principle | |
| CN114295659B (en) | Filling rubber Marins effect in-situ determination method based on small-angle neutron scattering | |
| Wilder | Characterization of insulation aging with power-dense environments | |
| CN107817258B (en) | Liquid silicone rubber aging degree evaluation method based on X-ray diffraction spectrum peak-splitting fitting | |
| CN113916763A (en) | Method for predicting wet heat aging life of methyl vinyl silicone rubber | |
| JP2000081401A (en) | Deterioration diagnostic method for organic insulating material | |
| Chen et al. | Non-destructive condition assessment of silicone rubber composite insulators | |
| Lu et al. | Characterization of gibbsite filler in HTV silicone rubber by thermogravimetric analysis | |
| Kim et al. | A study of validation of condition monitoring method of NPPs cable through volume electrical resistivity | |
| KR100776641B1 (en) | Evaluation method on degradation of polymeric materials by using dielectric relaxation properties |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150422 |
|
| WD01 | Invention patent application deemed withdrawn after publication |