CN103913635A - System for measuring surface resistivity of material on high-temperature condition - Google Patents
System for measuring surface resistivity of material on high-temperature condition Download PDFInfo
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- CN103913635A CN103913635A CN201410138115.7A CN201410138115A CN103913635A CN 103913635 A CN103913635 A CN 103913635A CN 201410138115 A CN201410138115 A CN 201410138115A CN 103913635 A CN103913635 A CN 103913635A
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Abstract
The invention discloses a system for measuring the surface resistivity of a material on a high-temperature condition. The system is composed of a positioning and transmitting system and a resistance measurement system. A high-temperature environment is achieved through a high-temperature heating furnace. An infrared thermometer is used for monitoring the surface temperature change of the material. A measurement electrode resistant to the high temperature is designed according to a double-electrode method. Each high-temperature electrode is a graphite electrode resistant to the high temperature and each high-temperature transmission line is a graphite line. In the measuring process, the material to be measured is firstly heated to a certain temperature in the high-temperature heating furnace, the material is then rapidly taken out and placed on a high-temperature-resistant insulation base, and the surface resistivity of the material is continuously monitored in the naturally cooling process on the high-temperature condition. The system is simple in overall structure and convenient to operate and control. After the material is heated, the surface resistivity of the material is measured outside the high-temperature heating furnace; due to the fact that the high-temperature-resistant graphite electrodes are in contact with the high-temperature material and the graphite lines are connected with the thermometer, influence on the system by the high temperature is avoided, and the operability of measurement is guaranteed.
Description
Technical field
The present invention relates to the test macro of material surface resistivity under a kind of hot conditions, especially the surface resistivity of aircraft surface heat-barrier material under hot environment.
Background technology
The static discharge producing because of a variety of causes when aircraft aloft flies may cause the blast on fire of its fuel tank, the radiation that static discharge produces also can cause interference to the communication of aircraft and navigational system, and this just needs the surfacing of aircraft to have certain antistatic performance.Meanwhile, aircraft is aloft understood because producing very high heat with atmosphere friction in high-speed motion process, and especially under the environment of near space, aircraft surface temperature can reach thousands of degree, and aircraft surface can cover thermofin for this reason.For the antistatic performance of thermofin how, especially whether the antistatic performance under hot conditions is up to standard, and this just needs an important parameter to weigh, i.e. the surface resistivity of material.But the surface resistivity of material can change along with the variation of temperature, therefore, under the surface resistivity of measurement material and hot conditions, the surface resistivity of material is particularly important.
At present, there is the method for testing such as three-electrode method, two-probe method for the test of the surface resistivity of material under normal-temperature.But, for the test of material surface resistivity under hot conditions, owing to being subject to the restriction of heating condition and testing tool itself, also there is no now good method of testing.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in structure, operate practical, measurement result material surface resistivity test macro under hot conditions accurately.
For solving the problems of the technologies described above, the technical solution used in the present invention is: material surface resistivity test macro under a kind of hot conditions, and its gordian technique is: comprise location and transmission system and resistance test system;
Described location and transmission system comprise insulator foot, are placed with test sample on described insulator foot, and described test sample top is provided with two high temperature electrodes, above each high temperature electrode, is provided with weight;
Described resistance test system comprises static resistance meter, and described high temperature electrode connects the X-over of static resistance meter through high temperature transmission line.
Preferably, described high temperature electrode is graphite electrode, and it is shaped as strip.
Further preferred, described electrode length is 12cm, and height and width are 1cm.
Preferably, described insulator foot forms by high temperature brick with for increasing the polyfluortetraethylene plate of insulating property, described polyfluortetraethylene plate is arranged at below, and described high temperature brick is located at above polyfluortetraethylene plate, and described high temperature brick arranges between two and two separated by a distance; Described test specimens product are positioned on high temperature brick.
Preferably, described weight is steel cylinder, is provided with one and high temperature electrode groove of the same size on this right cylinder, and described high temperature electrode is stuck in groove.
Preferably, described high temperature transmission line is graphite line.
Also comprise for measure test sample temperature infrared thermometer and/or for heat test sample high temperature furnace.
The beneficial effect that adopts technique scheme to produce is:
1, one-piece construction of the present invention is simple, and convenient operation and control.By after material heating, at high temperature furnace external testing material surface resistivity, contacted with high-temperature material by resistant to elevated temperatures graphite electrode, adopt graphite line to be connected with testing tool simultaneously, avoid the impact of high temperature on test macro, guarantee the operability of measuring.
2, the present invention adopts infrared thermometer monitoring material surface temperature, and utilize weight to push down electrode increases contacting of electrode and material simultaneously, has guaranteed the accuracy of measurement result.
3, the present invention can the test in hot conditions lower surface resistivity for various insulating material flexibly.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Referring to accompanying drawing 1, the present invention is by locating and transmission system and normal temperature resistance test macro form.The instruments such as high temperature furnace, infrared thermometer and the static resistance meter that the present invention relates to all adopt existing commercially available prod.Wherein resistance test system is made up of X-over and ACL800 surface resistance tester.
The heating-up temperature of high temperature furnace can reach 1000 ℃; High temperature transmission line adopts graphite line to make, and length is 1m, guarantees that high temperature does not pass to testing tool; High temperature electrode adopts graphite material to make, and makes long strip type, and length is 12cm, and height and width are 1cm; Press weight steel and make right cylinder, diameter 10cm, high 10cm, a groove that size is consistent with electrode is dug out in its bottom, and electrode is stuck in groove just; Insulator foot is made up of high temperature brick and polyfluortetraethylene plate, two high temperature bricks are placed on polyfluortetraethylene plate, between two high temperature bricks, keep certain distance, but material can be placed on brick, ensure like this resistance to elevated temperatures and its high insulating property of the insulator foot being contacted with measure and monitor the growth of standing timber material; X-over is used for connecting high temperature transmission line and static resistance test instrument, guarantees convenient test.
When test, detected materials is heated half an hour in high temperature furnace, guarantee that material is fully heated, and be heated to assigned temperature; Then take out rapidly material, material is placed on the high temperature brick of the insulator foot placing in advance; Graphite electrode is placed on to the edge of insulating material, utilizes weight to push down graphite electrode, groove blocks electrode, and graphite transmission line connecting test electrode is also connected to surface resistance tester by X-over; Utilize the temperature of infrared thermometer monitoring material surface simultaneously, in its natural cooling process, monitor continuously the surface resistivity of material under condition of different temperatures.
The present invention has realized the test to material surface resistivity under hot conditions, utilize high-temperature heater that material is heated to assigned temperature, utilize infrared thermometer monitoring material surface temperature variation, design resistant to elevated temperatures graphite test electrode according to two-probe method, use makes electrode contact fully with material surface with the weight of groove, described weight bottom is provided with groove, and groove and electrode in the same size is stuck in groove electrode just.Adopt graphite line as high temperature transmission line.When test, first tested material is heated to certain temperature in high temperature furnace, then takes out rapidly material, be placed on high-temperature insulation base, in its natural cooling process, monitor continuously the surface resistivity of material under hot conditions, utilize infrared thermometer monitoring material surface temperature simultaneously.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a material surface resistivity test macro under hot conditions, is characterized in that: comprise location and transmission system and resistance test system;
Described location and transmission system comprise insulator foot, are placed with test sample on described insulator foot, and described test sample top is provided with two high temperature electrodes, above each high temperature electrode, is provided with weight;
Described resistance test system comprises static resistance meter, and described high temperature electrode connects the X-over of static resistance meter through high temperature transmission line.
2. material surface resistivity test macro under hot conditions according to claim 1, is characterized in that: described high temperature electrode is graphite electrode, and it is shaped as strip.
3. material surface resistivity test macro under hot conditions according to claim 2, is characterized in that: described electrode length is 12cm, and height and width are 1cm.
4. material surface resistivity test macro under hot conditions according to claim 1, it is characterized in that: described insulator foot forms by high temperature brick with for increasing the polyfluortetraethylene plate of insulating property, described polyfluortetraethylene plate is arranged at below, described high temperature brick is located at above polyfluortetraethylene plate, and described high temperature brick arranges between two and two separated by a distance; Described test specimens product are positioned on high temperature brick.
5. material surface resistivity test macro under hot conditions according to claim 1, is characterized in that: described weight is steel cylinder, is provided with one and high temperature electrode groove of the same size on this right cylinder, and described high temperature electrode is stuck in groove.
6. material surface resistivity test macro under hot conditions according to claim 1, is characterized in that: described high temperature transmission line is graphite line.
7. according to the test macro of material surface resistivity under the hot conditions described in claim 1-6, it is characterized in that: also comprise for measure test sample temperature infrared thermometer and/or for heat test sample high temperature furnace.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410138115.7A CN103913635B (en) | 2014-04-08 | 2014-04-08 | System for measuring surface resistivity of material on high-temperature condition |
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| CN201410138115.7A CN103913635B (en) | 2014-04-08 | 2014-04-08 | System for measuring surface resistivity of material on high-temperature condition |
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| CN103913635A true CN103913635A (en) | 2014-07-09 |
| CN103913635B CN103913635B (en) | 2015-07-15 |
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Cited By (8)
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| CN105486926A (en) * | 2016-01-29 | 2016-04-13 | 哈尔滨理工大学 | Three-electrode system for testing surface resistivity of bar-shaped insulating material |
| CN104166049B (en) * | 2014-08-20 | 2016-08-17 | 太原理工大学 | A kind of soil resistivity test device of insulating materials |
| CN106771619A (en) * | 2016-12-26 | 2017-05-31 | 上海集成电路研发中心有限公司 | A kind of high precision temperature control resistance test system |
| CN107907746A (en) * | 2017-10-25 | 2018-04-13 | 营口康辉石化有限公司 | A kind of test method of polymer melting resistivity |
| CN109188086A (en) * | 2018-09-19 | 2019-01-11 | 许昌学院 | A kind of test method that temperature influences space medium material electric conductivity |
| CN109427626A (en) * | 2017-09-05 | 2019-03-05 | 住友重机械工业株式会社 | Laser anneal device and sheet resistance calculate device |
| CN109655666A (en) * | 2018-12-05 | 2019-04-19 | 深圳市飞荣达科技股份有限公司 | Sheet resistance test fixture and test method |
| CN112051452A (en) * | 2020-07-27 | 2020-12-08 | 山东天岳先进材料科技有限公司 | High-precision graphite crucible resistivity testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166049B (en) * | 2014-08-20 | 2016-08-17 | 太原理工大学 | A kind of soil resistivity test device of insulating materials |
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| CN106771619A (en) * | 2016-12-26 | 2017-05-31 | 上海集成电路研发中心有限公司 | A kind of high precision temperature control resistance test system |
| CN109427626A (en) * | 2017-09-05 | 2019-03-05 | 住友重机械工业株式会社 | Laser anneal device and sheet resistance calculate device |
| CN107907746A (en) * | 2017-10-25 | 2018-04-13 | 营口康辉石化有限公司 | A kind of test method of polymer melting resistivity |
| CN109188086A (en) * | 2018-09-19 | 2019-01-11 | 许昌学院 | A kind of test method that temperature influences space medium material electric conductivity |
| CN109188086B (en) * | 2018-09-19 | 2021-01-15 | 许昌学院 | Method for testing influence of temperature on conductivity of space dielectric material |
| CN109655666A (en) * | 2018-12-05 | 2019-04-19 | 深圳市飞荣达科技股份有限公司 | Sheet resistance test fixture and test method |
| CN112051452A (en) * | 2020-07-27 | 2020-12-08 | 山东天岳先进材料科技有限公司 | High-precision graphite crucible resistivity testing device and method |
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| CN103913635B (en) | 2015-07-15 |
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