CN102043097A - High-pressure steam constant humid heat test of ceramic capacitor - Google Patents
High-pressure steam constant humid heat test of ceramic capacitor Download PDFInfo
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- CN102043097A CN102043097A CN2010105076314A CN201010507631A CN102043097A CN 102043097 A CN102043097 A CN 102043097A CN 2010105076314 A CN2010105076314 A CN 2010105076314A CN 201010507631 A CN201010507631 A CN 201010507631A CN 102043097 A CN102043097 A CN 102043097A
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Abstract
The invention discloses a high-pressure steam constant humid heat test of a ceramic capacitor, relating to the technical field of capacitor production. In the invention, the finished product of the ceramic capacitor is put into a medical pressure steam sterilizer to test the epoxy encapsulating effect of the ceramic capacitor and check the anti-moisture capability and the electrical property variation value of the capacitor by destructive tests under abnormal severe conditions of high temperature, high humidity, negative pressure and the like, thus satisfying the use requirement of users, and ensuring that the capacitor can not fail due to voltage resistance breakdown caused by humidity.
Description
Technical field:
The present invention relates to the capacitor production technical field, refer in particular to a kind of high pressure steam steady-state damp heat test of ceramic capacitor.
Background technology:
Along with the application and the development of high pressure, interchange ceramic capacitor in recent years, market is also more and more higher to the performance requirement of high pressure, interchange ceramic capacitor.The production technology of most high pressure, interchange ceramic capacitor all is to use epoxy resin to be coated with withstand voltage, insulating property that capacitor is improved on the envelope surface on the ceramic capacitor market now.Epoxy resin can be widely used in such as many industries such as aviation and automobiles as the matrix resin of compound substance or as bonding agent, and what this base polymer made us being concerned about most a bit is exactly their long-term performance.To the existing many relevant reports of the moisture ageing research of this class material, the new modified epoxy resin that can at high temperature use also is one of research focus.In general, except under very harsh service condition, more than 100 ℃, Environmental Water can be ignored greatly to the influence of material, but the gaseous environment of material influence, especially oxygen always exist usually, and may cause other forms of loss of strength.The thermal degradation mechanism and the weightless process of material attempted to explain in existing at present several pieces of articles, and the strength degradation phenomenon, and the epoxy resin chemical degradation mode of widespread reports is intramolecular dehydration the most.According to Chinese epoxy resin employer's organization expert introduction, crosslinking points may be the part of most fragile in the polymer network, therefore may cause changing back to not crosslinked in the depolymerization of thermal degradation process generation chain, the wetting angle of adding most of porcelain bodies and water is very little, capacitor can be easy to make moist after humidity is deposited a period of time in greater than 60% air, thereby the insulation resistance that causes ceramic capacitor descends, proof voltage punctures and ceramics burns out, even the generation electric power accident, particularly ceramic capacitor is easier under the coastal humid conditions in south makes moist.
Summary of the invention:
The objective of the invention is to seal effect and moistureproof ability for the epoxy of checking capacitor, prevent that the not good product of moistureproof ability from flowing into client, reduce the failure risk that capacitor causes because of making moist, the ceramic capacitor finished product is put into the medical pressure steam sterilizer, pass through high temperature, high humidity, the epoxy of the severity condition test ceramic capacitor of abnomal conditions such as negative pressure is sealed effect, moistureproof ability and the electrical property changing value of check capacitor under destructive test, satisfy client's request for utilization, guarantee that capacitor can not cause that proof voltage punctures inefficacy because of making moist.
To achieve these goals, the technical solution used in the present invention is: use the medical pressure steam sterilizer to carry out the high pressure steam steady-state damp heat test ceramic capacitor finished product.It comprises following steps:
(a) from the ceramic capacitor finished product of producing in batches, randomly draw the 1000pcsS sample, use loss angle, insulation resistance initial value and the record of TH2681 resistance meter, TH2817ALCR digital electric bridge test sample book;
(b) the medical pressure steam sterilizer takes out inner bag injects about 2 kilograms of domestic waters in the pot body, adds fair being advisable on water height and the inner bag carriage, and sample is dispersed on each layer of medical pressure steam sterilizer mesh screen;
(c) open medical pressure steam sterilizer power supply, set the test condition parameter;
(d) test period: 3 hours;
(e) temperature: 110 ℃;
(f) humidity: 100%RH;
(g) atmospheric pressure: 0.14MPa (pressure is presented at the pressure of 110 ℃ of this moments on the pressure gauge and points to 0.04MPa, and standard environment atmospheric pressure 0.1Mpa adds up to 0.14MPa);
(h) cover medical pressure steam sterilizer lid, press "start" button and begin test;
(i) after test period stops the sample taking-up is put on the worktable, natural cooling recovered 12 hours;
(g) with the sample use TH2681 resistance meter that recovers to finish, loss angle, insulation resistance test value and the record of TH2817ALCR digital electric bridge test sample book;
(k) test findings is passed judgment on: insulation resistance minimum Ri 〉=0.1 * 10 in all trial targets of test back
5M Ω then is judged to outstanding; Insulation resistance minimum 2000M Ω≤Ri＜0.1 * 10 in all trial targets of test back
5M Ω then is judged to good.Insulation resistance minimum 500M Ω＜Ri＜2000M Ω in all trial targets of test back, it is qualified then to be judged to.Insulation resistance minimum Ri≤500M Ω in all trial targets of test back then is judged to be defective.Test back trial value is compared with initial value, if insulating resistance value is reduced in the number order magnitude range, judges that it is good that epoxy is sealed effect; If insulation resistance is reduced in two orders of magnitude, judge that it is qualified that epoxy is sealed effect; If insulation resistance reduces by three orders of magnitude above (comprising three orders of magnitude), judge that it is defective that epoxy is sealed effect.Test findings is judged outstanding product, proves to seal respond wellly, and the long-term back of placing the phenomenon of making moist can not occur because of product structure is stable.Test findings is judged unacceptable product, places that product surface epoxy resin engenders weightlessness, degraded after six months, and when humidity was big, moisture entered product inside and causes insulating resistance value to descend and then cause the capacitor inefficacy.
Described step (d) test period is 3 hours.
Described step (e) temperature is 110 ℃.
Described step (f) humidity is 100%RH.
Described step (g) atmospheric pressure is 0.14MPa.
The annex explanation:
Annex 1 is the laboratory report and the experimental data of the outstanding product of ceramic capacitor high pressure steam steady-state damp heat test.
Annex 2 is the laboratory report and the experimental data of ceramic capacitor high pressure steam steady-state damp heat test unacceptable product.
Embodiment:
This test method is that the ceramic capacitor finished product is put into the medical pressure steam sterilizer, and the epoxy of the severity condition test ceramic capacitor by abnomal conditions such as high temperature, high humidity, negative pressures is sealed effect.Its test procedure is as follows: (a) randomly draw the 1000pcsS sample from the ceramic capacitor finished product of producing in batches, use loss angle, insulation resistance initial value and the record of TH2681 resistance meter, TH2817ALCR digital electric bridge test sample book; (b) the medical pressure steam sterilizer takes out inner bag injects about 2 kilograms of domestic waters in the pot body, adds fair being advisable on water height and the inner bag carriage, and sample is dispersed on each layer of medical pressure steam sterilizer mesh screen; (c) open medical pressure steam sterilizer power supply, set the test condition parameter, test period: 3 hours, temperature: 110 ℃, humidity: 100%RH, atmospheric pressure: 0.14MPa (pressure is presented at the pressure of 110 ℃ of this moments on the pressure gauge and points to 0.04MPa, and standard environment atmospheric pressure 0.1Mpa adds up to 0.14MPa); (h) cover medical pressure steam sterilizer lid, press "start" button and begin test; (i) after test period stops the sample taking-up is put on the worktable, natural cooling recovered 12 hours; (g) with the sample use TH2681 resistance meter that recovers to finish, loss angle, insulation resistance test value and the record of TH2817ALCR digital electric bridge test sample book.
The above only is the preferred embodiment of invention, so all equivalences of doing according to the described structure of application for a patent for invention scope, feature and principle change or modify, is included in the application for a patent for invention scope.
Claims (5)
1. the high pressure steam steady-state damp heat test of a ceramic capacitor, it is characterized in that: this test is that the ceramic capacitor finished product is put into the medical pressure steam sterilizer, the epoxy of the severity condition test ceramic capacitor by abnomal conditions such as high temperature, high humidity, negative pressures is sealed effect, moistureproof ability and the electrical property changing value of check capacitor under destructive test, satisfy client's request for utilization, guarantee that capacitor can not cause that proof voltage punctures inefficacy because of making moist., it comprises following steps:
(a) from the ceramic capacitor finished product of producing in batches, randomly draw the 1000pcsS sample, use loss angle, insulation resistance initial value and the record of TH2681 resistance meter, TH2817ALCR digital electric bridge test sample book;
(b) the medical pressure steam sterilizer takes out inner bag injects about 2 kilograms of domestic waters in the pot body, adds fair being advisable on water height and the inner bag carriage, and sample is dispersed on each layer of medical pressure steam sterilizer mesh screen;
(c) open medical pressure steam sterilizer power supply, set the test condition parameter;
(d) test period: 3 hours;
(e) temperature: 110 ℃;
(f) humidity: 100%RH;
(g) atmospheric pressure: 0.14MPa (pressure is presented at the pressure of 110 ℃ of this moments on the pressure gauge and points to 0.04MPa, and standard environment atmospheric pressure 0.1Mpa adds up to 0.14MPa);
(h) cover medical pressure steam sterilizer lid, press "start" button and begin test;
(i) after test period stops the sample taking-up is put on the worktable, natural cooling recovered 12 hours;
(g) with the sample use TH2681 resistance meter that recovers to finish, loss angle, insulation resistance test value and the record of TH2817ALCR digital electric bridge test sample book;
(k) test findings is passed judgment on: insulation resistance minimum Ri 〉=0.1 * 10 in all trial targets of test back
5M Ω then is judged to outstanding; Insulation resistance minimum 2000M Ω≤Ri＜0.1 * 10 in all trial targets of test back
5M Ω then is judged to good.Insulation resistance minimum 500M Ω＜Ri＜2000M Ω in all trial targets of test back, it is qualified then to be judged to.Insulation resistance minimum Ri≤500M Ω in all trial targets of test back then is judged to be defective.Test back trial value is compared with initial value, if insulating resistance value is reduced in the number order magnitude range, judges that it is good that epoxy is sealed effect; If insulation resistance is reduced in two orders of magnitude, judge that it is qualified that epoxy is sealed effect; If insulation resistance reduces by three orders of magnitude above (comprising three orders of magnitude), judge that it is defective that epoxy is sealed effect.
2. the high pressure steam steady-state damp heat test of a kind of ceramic capacitor according to claim 1 is characterized in that: described step (d) test period is 3 hours.
3. the high pressure steam steady-state damp heat test of a kind of ceramic capacitor according to claim 1 is characterized in that: described step (e) temperature is 110 ℃.
4. the high pressure steam steady-state damp heat test of a kind of ceramic capacitor according to claim 1 is characterized in that: described step (f) humidity is 100%RH.
5. the high pressure steam steady-state damp heat test of a kind of ceramic capacitor according to claim 1 is characterized in that: described step (g) atmospheric pressure is 0.14MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105076314A CN102043097B (en) | 2010-10-13 | 2010-10-13 | High-pressure steam constant humid heat test of ceramic capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105076314A CN102043097B (en) | 2010-10-13 | 2010-10-13 | High-pressure steam constant humid heat test of ceramic capacitor |
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| Publication Number | Publication Date |
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| CN102043097A true CN102043097A (en) | 2011-05-04 |
| CN102043097B CN102043097B (en) | 2012-12-19 |
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| CN2010105076314A Expired - Fee Related CN102043097B (en) | 2010-10-13 | 2010-10-13 | High-pressure steam constant humid heat test of ceramic capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295603A (en) * | 2021-05-21 | 2021-08-24 | 厦门强力巨彩光电科技有限公司 | Experimental method for verifying peeling of outdoor lamp bead epoxy glue and support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020124910A1 (en) * | 2000-07-05 | 2002-09-12 | Murata Manufacturing Co., Ltd. | Conductive paste and laminated ceramic electronic component using the same |
| CN101056499A (en) * | 2006-04-10 | 2007-10-17 | E.I.内穆尔杜邦公司 | Organic encapsulant compositions for protection of electronic components |
| CN101213625A (en) * | 2005-07-07 | 2008-07-02 | 株式会社村田制作所 | Electronic component, mounting structure of electronic component, and process for producing electronic component |
-
2010
- 2010-10-13 CN CN2010105076314A patent/CN102043097B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020124910A1 (en) * | 2000-07-05 | 2002-09-12 | Murata Manufacturing Co., Ltd. | Conductive paste and laminated ceramic electronic component using the same |
| CN101213625A (en) * | 2005-07-07 | 2008-07-02 | 株式会社村田制作所 | Electronic component, mounting structure of electronic component, and process for producing electronic component |
| CN101056499A (en) * | 2006-04-10 | 2007-10-17 | E.I.内穆尔杜邦公司 | Organic encapsulant compositions for protection of electronic components |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295603A (en) * | 2021-05-21 | 2021-08-24 | 厦门强力巨彩光电科技有限公司 | Experimental method for verifying peeling of outdoor lamp bead epoxy glue and support |
| CN113295603B (en) * | 2021-05-21 | 2024-04-16 | 厦门强力巨彩光电科技有限公司 | Experimental method for verifying stripping of epoxy glue and bracket of outdoor lamp bead |
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| CN102043097B (en) | 2012-12-19 |
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