Table 1 - uploaded by Julie Charles
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Dielectric constants of rubber and polymer materials
Contexts in source publication
Context 1
... dielectric constant is calculated using the relation, E r = [ (λ 0 / λ g2 ) 2 + (λ 0 / λ c ) 2 ] where, λ 0 is the wavelength of microwaves in free space, λ c is the cut of wavelength, λ g2 is the wavelength of dielectric filled space. As the microwave frequency decreases the dielectric constant increases for all Table 1 and dielectric constants of rubber derivatives in the vulcanized and blended states is presented in Table 2. ...
Context 2
... dielectric constants of the rubber derivatives and polymer materials taken for study were calculated using the X-band (9.6 GHz) and K- band (26 GHz) microwave test benches at room temperature. From the results obtained in Table 1, it is evident that dielectric constants evaluated for all the rubber and polymeric materials in K-band is lower than in X-band. The dielectric constant decreases with increase of frequency for all the samples and this result is in coincidence with literature¹³. ...
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Citations
This paper deals with an experiment to study on frequency selection algorithm in measuring latex's permittivity. There are five clones of latex that have been used as samples to analyse the permittivity using SPSS software. In this work, the permittivity of 39 samples from five clones of latex have been measured at room temperature which is 25°C with the frequency ranging from 50Hz to until 100MHz. EIS is used to measure the data of all the samples. The study comes to the inference where low frequency can be selected to measure the permittivity of the pure latex. From the experimental results, it shows that frequency 50Hz can be selected in measuring latex's permittivity because the p-value is below than 0.05where there is significant different as compared to the other frequencies. The experimental results give valuable explanation and information for the analysis of frequency 50Hz is being chosen.
