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A facile and objective method is introduced to automatically quantify the filler dispersion in polymer composites through image analysis. This method consists of automatic identification of the fillers in the image and a rigorous measurement of the filler dispersion within the space of functions. Compared with previous methods, this method has the advantages of 1) automatically recognizing the fillers,...
Multiwalled carbon nanotubes (MWCNTs) and graphite nanoplates were functionalized by chemical methods. The functionalized chemical structures were characterized by Fourier-Transform Infrared (FTIR). It is found that carboxyl groups were grafted onto MWCNTs and graphite nanoplates surfaces. Epoxy and cyanate ester polymer composites with functionalized MWCNTs and graphite nano plates were prepared,...
SiC particles and epoxy resin were applied to prepare a potential high thermal conductivity underfill material. SiC particles are thermally coated with a nano layer silica by oxidation at high temperature. Then silane was used as the surface treatment of the silica coated SiC particles to improve the interaction between filler and polymer matrix. TEM and TGA measurements were used to characterize...
Considerable attention has been devoted to the synthesis and application of nanoparticles because of their unusual physical and chemical properties resulted from the ultra-fine size and ultra-large surface area. Polymer composite materials based on metal nanoparticles provide a potential solution to meet the present and future technological demand in virtue of the good processibility and mechanical...
In-situ synthesis of Ag nanoparticles was successfully carried out in various epoxy matrix by photochemical method. The effects of reducing agent type, concentration of metal precursor, epoxy matrix type and additives on the morphology of nanoparticles were explored. Transmission electronic microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the...
Conductive filler-polymer composite materials have been extensively investigated as conductor-insulator percolative system to achieve high dielectric constant (K). Additionally, the effective dielectric constant of conductive filler/polymer composite can be dramatically enhanced by increasing the dielectric constant of polymer matrix according to scaling theory. However, the high dielectric loss of...
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