CN113758973A - Testing method for DOTP volume resistivity - Google Patents
Testing method for DOTP volume resistivity Download PDFInfo
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- CN113758973A CN113758973A CN202110818710.5A CN202110818710A CN113758973A CN 113758973 A CN113758973 A CN 113758973A CN 202110818710 A CN202110818710 A CN 202110818710A CN 113758973 A CN113758973 A CN 113758973A
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- dioctyl terephthalate
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- 238000012360 testing method Methods 0.000 title claims abstract description 15
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical compound O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 title claims abstract 12
- OEIWPNWSDYFMIL-UHFFFAOYSA-N dioctyl benzene-1,4-dicarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C=C1 OEIWPNWSDYFMIL-UHFFFAOYSA-N 0.000 claims abstract description 103
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000004364 calculation method Methods 0.000 claims description 14
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 9
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 9
- 238000012935 Averaging Methods 0.000 claims description 8
- 238000010998 test method Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 239000004014 plasticizer Substances 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- SIXWIUJQBBANGK-UHFFFAOYSA-N 4-(4-fluorophenyl)-1h-pyrazol-5-amine Chemical compound N1N=CC(C=2C=CC(F)=CC=2)=C1N SIXWIUJQBBANGK-UHFFFAOYSA-N 0.000 description 2
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- 150000008360 acrylonitriles Chemical class 0.000 description 1
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- 239000002649 leather substitute Substances 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
Abstract
The invention discloses a testing method for DOTP volume resistivity; the method comprises the following steps: s1, measuring the volume of dioctyl terephthalate; s2, placing dioctyl terephthalate on detection equipment; s3, supplying power to dioctyl terephthalate to detect a resistor; s4, calculating the detection data information of the dioctyl terephthalate; s5, setting the environment of the dioctyl terephthalate according to requirements to measure the resistivity; s6, processing and comparing the detected data information; the invention realizes the measurement of the resistivity of the solid dioctyl terephthalate through the volume, ensures the accuracy of measured data information, and is provided with vacuum environment measurement and measurement environments with different temperatures and humidities during measurement.
Description
Technical Field
The invention belongs to the technical field of resistivity test, and particularly relates to a test method for DOTP volume resistivity.
Background
Dioctyl terephthalate (DOTP) is a good primary plasticizer for polyvinyl chloride (PVC) plastics. Compared with the common diisooctyl phthalate (DOP), the dioctyl phthalate has the advantages of heat resistance, cold resistance, difficult volatilization, extraction resistance, good flexibility, good electrical insulation performance and the like, and shows excellent durability, soap water resistance and low-temperature flexibility in products. Because of low volatility, DOTP can completely meet the temperature-resistant grade requirement of wires and cables, and can be widely applied to 70 ℃ resistant cable materials and other various PVC soft products. The DOTP can be used for producing artificial leather films besides a large amount of plasticizers used for cable materials and PVC. In addition, the plasticizer has excellent compatibility, and can be used for plasticizers such as acrylonitrile derivatives, polyvinyl butyral, nitrile rubber, and cellulose nitrate. It can also be used as plasticizer, coating additive, lubricant for precision instruments, and lubricant additive for synthetic rubber, and can also be used as softener for paper, and its volume resistivity is the resistance of material per unit volume to current, and can be used for characterizing the electric property of material. Generally, the higher the volume resistivity, the more efficient the material will be for use as an electrically insulating component. The resistivity is usually called volume resistivity, and when dioctyl terephthalate is produced, the volume resistivity needs to be measured, however, various volume resistivity measurement methods in the market still have various problems.
Although the method for measuring the volume resistivity of the solid insulating material disclosed in the publication No. CN105486927B realizes accurate measurement of the volume resistivity of the measured object on the basis of overcoming the interference of the external induced current, the method has the advantages of convenient operation, high measurement precision and low requirement for the shape and size of the measured object, but does not solve the problems that the existing volume resistivity is influenced by the external environment during measurement, and the inaccuracy of the measurement data information is caused by the fact that the volume resistivity cannot be compared according to multiple sets of measurement data during measurement, and the like, so we propose a test method for the volume resistivity of DOTP.
Disclosure of Invention
The present invention is directed to a testing method for DOTP volume resistivity, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a test method for DOTP volume resistivity comprises the following steps:
s1 volume measurement of dioctyl terephthalate: storing dioctyl terephthalate into a container with a certain shape, measuring the inner diameter of the container by a vernier caliper and a micrometer, and further calculating to obtain the volume and the surface area of the dioctyl terephthalate;
s2, connecting dioctyl terephthalate to detection equipment: placing dioctyl terephthalate on a detection device, and placing an upper electrode, a main electrode and a protective electrode between the upper surface and the lower surface of the dioctyl terephthalate;
s3, supplying power to dioctyl terephthalate to detect resistance: supplying power to the dioctyl phthalate for at least 1min, detecting current and voltage through a detection device, detecting the detected current and voltage on a main electrode, and measuring at least four groups of data information during detection to finish measurement of the voltage and current of the volume resistivity of the dioctyl phthalate;
s4, calculating the detection data information of the dioctyl terephthalate: the calculation formula for the volume resistivity is as follows:
calculation of volume resistivity:
the formula for calculating the specific resistance is as follows: rv ═ Vs/Im;
the volume resistivity Rv is calculated using the formula Rv ═ EAR/STH x Rv, where:
EAR ═ Effective area,
STH ═ Sample thickness;
s5, setting the environment of the dioctyl terephthalate according to requirements to measure the resistivity: the volume resistivity of the dioctyl terephthalate is measured under the vacuum environment, then the volume resistivity of the dioctyl terephthalate is measured under the sealed environment by setting different temperatures and humidities, and the measuring method is repeated by S2, S3 and S4, and then data information is recorded;
s6, processing and comparing the detected data information: and taking out the maximum value and the minimum value of each group of detected data information, and then averaging the rest data information to obtain the numerical information of the volume resistivity of the dioctyl terephthalate in different environments.
Preferably, the dioctyl terephthalate storage container of S1 is selected to have a shape of a regular rectangle, square or cylinder, so that the volume of dioctyl terephthalate can be effectively calculated, and the level of dioctyl terephthalate can be maintained when dioctyl terephthalate is measured, and tilt measurement cannot be performed.
Preferably, the calculation of the volume of the dioctyl terephthalate in S1 requires measuring the length, width and height of the dioctyl terephthalate container, using the surface attached to the upper electrode and the main electrode as a contact surface, and using the distance between the upper electrode and the main electrode as the height of the dioctyl terephthalate.
Preferably, the dioctyl terephthalate is vertically placed when a cylindrical shape is selected, so that the surface of the dioctyl terephthalate is fitted between the upper electrode and the main electrode.
Preferably, the main electrode and the guard electrode in S2 are on the same side, and the power supply is electrically connected between the main electrode and the upper electrode for volume resistivity measurement and between the main electrode and the guard electrode for surface resistivity measurement.
Preferably, the magnitude of the supply current in S3 should be smaller than a set threshold, and should be larger than the set threshold when determining the limit value, and the current flowing from the upper electrode to the guard electrode in the measurement of the volume resistivity is a leakage current flowing from the guard electrode to the upper electrode, and the leakage current flows to the lower side of Vs, and does not affect the measurement result.
Preferably, the current and voltage detection device in S3 adopts a current meter and a voltage meter, or adopts an integrated device of an electrometer, a high resistance meter and a resistance box for detection, and when the device is used for detection, the device is subjected to zero calibration processing first, and then the circuit is electrically connected.
Preferably, the device further comprises a shielding ring sleeved on the low-voltage side of the dioctyl terephthalate, the shielding ring is electrically connected to a grounding end of a power supply, the power supply is also electrically connected with a control switch, and the control switch is a vacuum circuit breaker or a pneumatic switch.
Preferably, the vacuum environment in S5 is obtained by placing dioctyl terephthalate in the tank by a vacuum pump, and then performing detection, and at least a plurality of groups of environments with different temperatures and humidities are provided, for example: 10 ℃/relative humidity 100%, 70 ℃/relative humidity 100%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 0%, 70 ℃/relative humidity 0%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 50%, 70 ℃/relative humidity 50% and 30 ℃/relative humidity 50%.
Preferably, in the averaging in S6, if the difference between the maximum value and the minimum value and the mode is large, the elimination is performed, if the difference is not large, the remaining calculation is performed, and the averaging is performed by using one or more of an arithmetic mean algorithm, a harmonic mean algorithm, or a weighted arithmetic mean algorithm.
Compared with the prior art, the invention has the beneficial effects that:
the invention realizes the measurement of the resistivity of the solid dioctyl terephthalate by volume, simultaneously measures a plurality of groups, can realize the comparison of measured data information, ensures the accuracy of the measured data information, and is provided with vacuum environment measurement and measurement environments with different temperatures and humidities during measurement, thereby improving the accurate measurement of the dioctyl terephthalate, further improving the measurement data information under different environments and improving the measurement data information of the dioctyl terephthalate.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
fig. 2 is a schematic view of the volume measurement structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a test method for DOTP volume resistivity comprises the following steps:
s1 volume measurement of dioctyl terephthalate: storing dioctyl terephthalate into a container with a certain shape, measuring the inner diameter of the container by a vernier caliper and a micrometer, and further calculating to obtain the volume and the surface area of the dioctyl terephthalate;
s2, connecting dioctyl terephthalate to detection equipment: placing dioctyl terephthalate on a detection device, and placing an upper electrode, a main electrode and a protective electrode between the upper surface and the lower surface of the dioctyl terephthalate;
s3, supplying power to dioctyl terephthalate to detect resistance: supplying power to the dioctyl phthalate for at least 1min, detecting current and voltage through a detection device, detecting the detected current and voltage on a main electrode, and measuring at least four groups of data information during detection to finish measurement of the voltage and current of the volume resistivity of the dioctyl phthalate;
s4, calculating the detection data information of the dioctyl terephthalate: the calculation formula for the volume resistivity is as follows:
calculation of volume resistivity:
the formula for calculating the specific resistance is as follows: rv ═ Vs/Im;
the volume resistivity Rv is calculated using the formula Rv ═ EAR/STH x Rv, where:
EAR ═ Effective area,
STH ═ Sample thickness;
s5, setting the environment of the dioctyl terephthalate according to requirements to measure the resistivity: the volume resistivity of the dioctyl terephthalate is measured under the vacuum environment, then the volume resistivity of the dioctyl terephthalate is measured under the sealed environment by setting different temperatures and humidities, and the measuring method is repeated by S2, S3 and S4, and then data information is recorded;
s6, processing and comparing the detected data information: and taking out the maximum value and the minimum value of each group of detected data information, and then averaging the rest data information to obtain the numerical information of the volume resistivity of the dioctyl terephthalate in different environments.
In this embodiment, it is preferable that the dioctyl terephthalate storage container in S1 is formed in a rectangular, square or cylindrical shape, so that the volume of dioctyl terephthalate can be effectively calculated, and the level of dioctyl terephthalate can be maintained when dioctyl terephthalate is measured, and tilt measurement cannot be performed.
In this embodiment, preferably, the calculation of the volume of the dioctyl terephthalate in S1 requires measuring the length, width, and height of the dioctyl terephthalate container, taking the surface attached to the upper electrode and the main electrode as a contact surface, and taking the distance between the upper electrode and the main electrode as the height of the dioctyl terephthalate.
In this embodiment, preferably, when the dioctyl terephthalate is selected to be cylindrical, the dioctyl terephthalate is vertically disposed such that a surface of the dioctyl terephthalate is fitted between the upper electrode and the main electrode.
In this embodiment, it is preferable that the main electrode and the guard electrode in S2 are on the same side, and the power supply is electrically connected between the main electrode and the upper electrode for measuring the volume resistivity, and the power supply is electrically connected between the main electrode and the guard electrode for measuring the surface resistivity.
In this embodiment, it is preferable that the magnitude of the supply current in S3 is smaller than a set threshold, and is larger than the set threshold when the limit value is determined, and the current flowing from the upper electrode to the guard electrode in the measurement of the volume resistivity flows from the guard electrode to the upper electrode as leakage current, and the leakage current flows to the lower side of Vs and does not affect the measurement result.
In this embodiment, it is preferable that the detection device for both current and voltage in S3 adopts a current meter and a voltage meter, or adopts an integrated device of an electrometer, a high impedance meter and a resistor box to perform detection, and when the device performs detection, the device is subjected to zero calibration processing first, and then the circuit is electrically connected.
In this embodiment, preferably, the apparatus further includes a shielding ring sleeved on a low voltage side of the dioctyl terephthalate, the shielding ring is electrically connected to a ground terminal of a power supply, the power supply is further electrically connected to a control switch, and the control switch is a vacuum circuit breaker or a pneumatic switch.
In this embodiment, preferably, in the vacuum environment in S5, the vacuum pump is used to pump the environment in which the dioctyl terephthalate is placed into the tank into a vacuum state, and then detection is performed, and at least a plurality of groups are provided for different temperature and humidity environments, for example: 10 ℃/relative humidity 100%, 70 ℃/relative humidity 100%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 0%, 70 ℃/relative humidity 0%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 50%, 70 ℃/relative humidity 50% and 30 ℃/relative humidity 50%.
In this embodiment, preferably, in the averaging in S6, if the difference between the maximum value and the minimum value and the mode is large, the elimination is performed, if the difference is not large, the retained calculation is performed, and the averaging is performed by using one or more of an arithmetic mean algorithm, a harmonic mean algorithm, or a weighted arithmetic mean algorithm.
The invention has the following use process:
first, volume measurement of dioctyl terephthalate: storing dioctyl terephthalate into a container with a certain shape, measuring the inner diameter of the container by a vernier caliper and a micrometer, and further calculating to obtain the volume and the surface area of the dioctyl terephthalate;
secondly, placing dioctyl terephthalate on detection equipment: placing dioctyl terephthalate on a detection device, and placing an upper electrode, a main electrode and a protective electrode between the upper surface and the lower surface of the dioctyl terephthalate;
thirdly, supplying power to the dioctyl terephthalate to detect the resistance: supplying power to the dioctyl phthalate for at least 1min, detecting current and voltage through a detection device, detecting the detected current and voltage on a main electrode, and measuring at least four groups of data information during detection to finish measurement of the voltage and current of the volume resistivity of the dioctyl phthalate;
fourthly, calculating the detection data information of the dioctyl terephthalate: the calculation formula for the volume resistivity is as follows:
calculation of volume resistivity:
the formula for calculating the specific resistance is as follows: rv ═ Vs/Im;
the volume resistivity Rv is calculated using the formula Rv ═ EAR/STH x Rv, where:
EAR ═ Effective area,
STH ═ Sample thickness;
and fifthly, setting the environment of the dioctyl terephthalate according to requirements to measure the resistivity: the volume resistivity of dioctyl terephthalate is measured under the vacuum environment, then different temperatures and humidities are set under the sealed environment to measure the volume resistivity of the dioctyl terephthalate, a vacuum pump is adopted to pump the environment in which the dioctyl terephthalate is placed into the box into a vacuum state, then detection is carried out, and at least multiple groups of temperature and humidity environments are set, for example: 10 ℃/relative humidity 100%, 70 ℃/relative humidity 100%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 0%, 70 ℃/relative humidity 0%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 50%, 70 ℃/relative humidity 50% and 30 ℃/relative humidity 50%, and the measuring method repeats S2, S3 and S4, and then data information is recorded;
and sixthly, processing and comparing the detected data information: and taking out the maximum value and the minimum value of each group of detected data information, then averaging the rest data information to obtain numerical information of the volume resistivity of the dioctyl terephthalate under different environments, and calculating the average by adopting one or more of an arithmetic mean algorithm, a harmonic mean algorithm or a weighted arithmetic mean algorithm.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A test method for DOTP volume resistivity is characterized by comprising the following steps:
s1 volume measurement of dioctyl terephthalate: storing dioctyl terephthalate into a container with a certain shape, measuring the inner diameter of the container by a vernier caliper and a micrometer, and further calculating to obtain the volume and the surface area of the dioctyl terephthalate;
s2, connecting dioctyl terephthalate to detection equipment: placing dioctyl terephthalate on a detection device, and placing an upper electrode, a main electrode and a protective electrode between the upper surface and the lower surface of the dioctyl terephthalate;
s3, supplying power to dioctyl terephthalate to detect resistance: supplying power to the dioctyl phthalate for at least 1min, detecting current and voltage through a detection device, detecting the detected current and voltage on a main electrode, and measuring at least four groups of data information during detection to finish measurement of the voltage and current of the volume resistivity of the dioctyl phthalate;
s4, calculating the detection data information of the dioctyl terephthalate: the calculation formula for the volume resistivity is as follows:
calculation of volume resistivity:
the formula for calculating the specific resistance is as follows: rv ═ Vs/Im;
the volume resistivity Rv is calculated using the formula Rv ═ EAR/STH x Rv, where:
EAR ═ Effective area,
STH ═ Sample thickness;
s5, setting the environment of the dioctyl terephthalate according to requirements to measure the resistivity: the volume resistivity of the dioctyl terephthalate is measured under the vacuum environment, then the volume resistivity of the dioctyl terephthalate is measured under the sealed environment by setting different temperatures and humidities, and the measuring method is repeated by S2, S3 and S4, and then data information is recorded;
s6, processing and comparing the detected data information: and taking out the maximum value and the minimum value of each group of detected data information, and then averaging the rest data information to obtain the numerical information of the volume resistivity of the dioctyl terephthalate in different environments.
2. The testing method for DOTP volume resistivity according to claim 1, wherein: the dioctyl terephthalate storage container of S1 is preferably shaped as a rectangle, square or cylinder, so that the volume of dioctyl terephthalate can be calculated effectively, and the level of dioctyl terephthalate can be maintained when dioctyl terephthalate is measured, and tilt measurement cannot be performed.
3. The testing method for DOTP volume resistivity of claim 2, wherein: the calculation of the volume of dioctyl terephthalate in S1 requires measuring the length, width, and height of the dioctyl terephthalate container, using the surface attached to the upper electrode and the main electrode as a contact surface, and using the distance between the upper electrode and the main electrode as the height of the dioctyl terephthalate.
4. The testing method for DOTP volume resistivity of claim 3, wherein the testing method comprises the following steps: when the cylindrical shape is selected, the dioctyl terephthalate is vertically placed, so that the surface of the dioctyl terephthalate is attached between the upper electrode and the main electrode.
5. The testing method for DOTP volume resistivity according to claim 1, wherein: the main electrode and the guard electrode in S2 are on the same side, and the measurement of the volume resistivity electrically connects the power supply between the main electrode and the upper electrode, and the measurement of the surface resistivity electrically connects the power supply between the main electrode and the guard electrode.
6. The testing method for DOTP volume resistivity according to claim 1, wherein: the magnitude of the supply current in S3 should be smaller than a set threshold, and should be larger than the set threshold when determining the limit value, and for the measurement of the volume resistivity, the current flowing from the upper electrode to the guard electrode flows from the guard electrode to the upper electrode as leakage current, and the leakage current flows to the lower side of Vs, and does not affect the measurement result.
7. The testing method for DOTP volume resistivity according to claim 1, wherein: the detection device for the current and the voltage in the step S3 adopts a current meter and a voltage meter, or adopts an integrated device of an electrometer, a high resistance meter and a resistance box for detection, and when the device is used for detection, the device is subjected to zero calibration treatment firstly, and then the circuit is electrically connected.
8. The testing method for DOTP volume resistivity according to claim 1, wherein: the device is characterized by further comprising a shielding ring sleeved on the low-voltage side of the dioctyl terephthalate, wherein the shielding ring is electrically connected to the grounding end of a power supply, the power supply is also electrically connected with a control switch, and the control switch is a vacuum circuit breaker or a pneumatic switch.
9. The testing method for DOTP volume resistivity according to claim 1, wherein: vacuum environment among the S5 adopts the vacuum pump to place the environment of incasement portion with dioctyl terephthalate and takes out into vacuum state, then detects, is equipped with the multiunit at least to different humiture environment, for example: 10 ℃/relative humidity 100%, 70 ℃/relative humidity 100%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 0%, 70 ℃/relative humidity 0%, 30 ℃/relative humidity 0%, 10 ℃/relative humidity 50%, 70 ℃/relative humidity 50% and 30 ℃/relative humidity 50%.
10. The testing method for DOTP volume resistivity according to claim 1, wherein: and in the step S6, if the difference between the maximum value and the minimum value and the mode is large, removing, if the difference is not large, performing a retained calculation, and calculating the average by using one or more of an arithmetic mean algorithm, a harmonic mean algorithm or a weighted arithmetic mean algorithm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070268027A1 (en) * | 2006-05-19 | 2007-11-22 | Olsen Jared K | Methods and devices for measuring volume resistivity |
| JP2011203125A (en) * | 2010-03-25 | 2011-10-13 | Idemitsu Kosan Co Ltd | Device for measuring electrical characteristics of sample liquid, and method of measuring electrical characteristics employing the same |
| CN105486927A (en) * | 2015-11-25 | 2016-04-13 | 华北电力大学（保定） | Measurement method for volume resistivity of solid insulating material |
| CN109374975A (en) * | 2018-11-26 | 2019-02-22 | 华中科技大学 | The resistivity test device and method of thin polymer film under a kind of high field intensity |
| CN109828000A (en) * | 2019-03-20 | 2019-05-31 | 宁波石墨烯创新中心有限公司 | Electrocondution slurry Detection of Stability method and application |
| CN112230065A (en) * | 2020-10-20 | 2021-01-15 | 蚌埠中光电科技有限公司 | Measuring instrument for measuring volume and surface resistivity of glass at different temperatures |
-
2021
- 2021-07-20 CN CN202110818710.5A patent/CN113758973A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070268027A1 (en) * | 2006-05-19 | 2007-11-22 | Olsen Jared K | Methods and devices for measuring volume resistivity |
| JP2011203125A (en) * | 2010-03-25 | 2011-10-13 | Idemitsu Kosan Co Ltd | Device for measuring electrical characteristics of sample liquid, and method of measuring electrical characteristics employing the same |
| CN105486927A (en) * | 2015-11-25 | 2016-04-13 | 华北电力大学（保定） | Measurement method for volume resistivity of solid insulating material |
| CN109374975A (en) * | 2018-11-26 | 2019-02-22 | 华中科技大学 | The resistivity test device and method of thin polymer film under a kind of high field intensity |
| CN109828000A (en) * | 2019-03-20 | 2019-05-31 | 宁波石墨烯创新中心有限公司 | Electrocondution slurry Detection of Stability method and application |
| CN112230065A (en) * | 2020-10-20 | 2021-01-15 | 蚌埠中光电科技有限公司 | Measuring instrument for measuring volume and surface resistivity of glass at different temperatures |
Non-Patent Citations (2)
| Title |
|---|
| 张要强 等: "真空环境下电介质表面电阻率测试方法及其影响因素", 绝缘材料, vol. 39, no. 6, pages 55 - 58 * |
| 袁明珍 等: "绝缘液体介质损耗因数(tgδ)、相对介电常数(εr)和体积电阻率(ρv)的试验研究", 绝缘材料, no. 5, pages 520 - 25 * |
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