Ionic and thermal conductivity studies of silicone-dammar as a coating resin

Dammar is a natural resin was mixed with silicone resin (SD) to be new modified silicone coating binder. The sample was varied by weight % and designated as SD0, SD5, SD10, SD15, SD20, SD25, SD30, SD35, SD40 and SD45. The dried coating film layer was coated on aluminum q-panel using spin coater. The cured sample was mounted an open tube and filled with 3% of sodium chloride to measure ion conductivity using impedance spectroscopy (EIS). While a custom chamber was made to act sandwich like chamber to measure thermal conductivity of the cured sample As the result, SD15 and SD25 show higher coating resistance at 6.0E+06 and 8.0E+06 S/cm respectively. However ionic transference number showed the ionic activity up to 1.0V in SD10, SD15 and SD25. Thus, SD5, SD10 and SD15 show the low of k-value at 0.01, 0.02 and 0.03 W/mK respectively. XRD spectra indicate the dammar content could influent the ionic and thermal conductivity of SD coating resin when sharp peak of silicone resin gives the different intensity at SD10, SD15, SD20 and SD25.