Detection method for dielectric property of ceramic powder and application of detection method
A technology for ceramic powder and dielectric properties, which is applied in the field of functional material testing, can solve the problems of difficulty in meeting the requirements of high-frequency dielectric materials, low Df test accuracy, low relative dielectric constant, etc., and achieves a simple sample preparation process. Effective, small error, small size effect
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Embodiment 1
[0029] This embodiment provides a method for detecting the dielectric properties of ceramic powder, the specific steps are as follows:
[0030] S1. Titanium dioxide powder (particle size is 20 μm, spherical shape, impurity content <1wt%) and dispersed PTFE resin (particle size is 10 μm) are added to the high-speed mixer at a mass ratio of 10:5, and the mixture is evenly mixed at a stirring rate of 8000 rpm. Disperse and mix for 120s, set aside;
[0031] S2. Transfer the homogeneously mixed materials into a mixing container, add titanium dioxide and petroleum ether with a total mass of 25% of PTFE resin, stir quickly until it is in the shape of "bread crumbs", and seal it for later use;
[0032] S3, aging the material of S2 at room temperature for 20 minutes;
[0033] S4, the material of S3 is rolled into a sheet-like sample of PTFE / titanium dioxide / petroleum ether through a film rolling machine with a rotating speed of 9 rpm and a roll spacing of 0.6 μm;
[0034] S5, put the...
Embodiment 2
[0039] The difference between the testing method for the dielectric properties of the ceramic powder provided in this example and Example 1 is that the mixing time in step S1 is 0 s, that is, the PTFE resin does not undergo dispersion treatment.
[0040] After testing, at room temperature, the sample density is 3.015g / cm 3 , The dielectric constant is 10.45 at 10GHz, and the dielectric loss is 0.000715.
Embodiment 3
[0042] The difference between the detection method provided in this example and Example 1 is that the forming agent in step S2 is aviation kerosene.
[0043] After testing, at room temperature, the sample density is 2.868g / cm 3 , The dielectric constant is 8.99 at 10GHz, and the dielectric loss is 0.000675.
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