GB 3389.7-1986 Test methods for properties of piezoelectric ceramic materials - Test of strong field dielectric properties

This standard is applicable to the test of dielectric constant and dielectric loss tangent of piezoelectric ceramic materials under strong alternating electric field. GB 3389.7-1986 Test method for performance of piezoelectric ceramic materials Test of strong field dielectric properties GB3389.7-1986 Standard download decompression password: www.bzxz.net

UDC 621.315.612 :621.317.08
National Standard of the People's Republic of China
GB3389.7—86
Test methods for the properties of piezoelectric ceramicsTest for dielectric properties in high electric fieldPublished on 1986-05-27
Approved by the State Bureau of Standards
Implemented on 1987-05-01
National Standard of the People's Republic of China
Test methods for the properties of piezoelectric ceramicsTest for dielectric properties in high electric fieldUDC 621.315.612
1621.317.08
GB3389.7—86
This standard is applicable to the test of the dielectric constant and dielectric loss tangent of piezoelectric ceramic materials under the action of strong alternating electric fields. 1 Definition of terms and symbols
The definitions of terms and symbols used in this standard are in accordance with the provisions of GB3389.1—82 "Common Terms and Terms for Test Methods of Piezoelectric Ceramic Materials Performance".
2 Test principle
The dielectric loss and dielectric constant of piezoelectric ceramic materials are related to temperature, humidity, frequency and field strength of the alternating electric field. The strong field dielectric properties referred to in this standard are the dielectric properties under the action of strong alternating electric fields, generally referring to the dielectric constant and dielectric loss tangent. This standard uses the 1kHz high voltage two-line bridge shown in the figure below to measure the dielectric properties. C
Figure: U
1kHz high voltage signal source,
test sample;
standard capacitor:
high frequency decade variable resistance box;
- decade variable capacitance box;
National Bureau of Standards 1986-05-27 issued
1kHz high voltage Xilin bridge schematic diagram
1987-05-01 implementation
Jingxin pusher
Shangtu's bridge balance, the formula is established:
GB3389.786
to -oC.R.
The test sample's electrical penetration number, on,
The electrical training of the ball dimension electric customer,,
R, R, the electrical attachment of the product,;
The electrical customer box's electrical, Ft
-The dielectric of the sample is inserted and in the current value!
Frequency, ad/
When t is 0.1, (1) Wu F Wu floor. Cx =CN
To read the loss rise, take = × [nad/, R, -Cx-- CN
tgo = cy xlft
model () can be obtained
era-Cx
武4: c—torsion dielectric constant
80—air dielectric band number, 8.85^10:13F/m, test group thickness, cut
A—shallow sample electrode surface, m\
3 Test conditions
3.1 Environmental conditions
Regular test conditions:
159.252 obtained
Temperature 20-30, relative humidity 45%-75%; air 86~106kPa (650~80mmHg) Standard environmental conditions for arbitration test
Temperature 25±1; relative humidity 48%~52%; air 86~1kPa (650~80mmHg). a.2 Specimen size and requirements
The test piece is a thin sheet, with a full metal layer on both sides as the electrode, and polarized along the original direction. The specimen is only 20 mm long and 1 mm thick. 3.3 Treatment of specimens before testing
The specimen should be kept clean and dry, and not exposed to the porcelain. It is required to store the specimen for a certain period of time. The specimen should be stored for 26 hours under the environmental conditions specified in 3.1 before the test. Www.bzxZ.net
9.4 Test signal requirements
Frequency: 1kHz: positive wave, no more than 16 points; electric field strength: according to the requirements of the porcelain material, 2
4 Special information production three
4.! PA special
4B 3389.7--86
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: m~,: Ya t-!
Product::: Measurement room
Product temperature pool!
4.3 to love
put the test grid tube + a quality (into love),! I am in front of the pressure inside the pole electric cup, slow you increase the postal electricity of the false: please book the resistance box, the benefit is also narrow, the instrument! The minimum electric ratio of the parts refers to the box, and the value of the raw valley box. 4.4 Test method results 1 calculation
put the read fear of the positive box electric profit still burst box electric rate, substitute the "5" (6) formula, then the material of the machine to the piece of electric constant quality loss cake piece t.
Additional remarks:
in the standard insect 4 ship reward industry E company proposed.
This standard undertakes the national iron electric, pressure ratio insulation porcelain test professional standardization group organization design. This standard 1721 is responsible for the start of learning.
This is called the Xiongshi drafting of the Duoshao case.
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