| Summary: | 碩士 === 國立臺灣科技大學 === 高分子系 === 94 === The polypropylene oxide-polyethylene oxide copolymer (PEL) and epoxy resin were blended by the method of simultaneous polymerization. It was exploring the toughened mechanism of the PEL-Epoxy resin with some tests. The compatibility of the blend system was discussed by TGA and DMA.
In the results, the tensile strength would be promoted with increasing the PEL content. While the PEL content was 30PHR, the elongation ratio would go to a maximum. Because that there was not any chemical bond between the pure PEL and Epoxy resin. This made the flaws in cross-linking structure.
According to the analytic of DMA and TGA, the compatibility between the epoxy resin and PEL would be improved with increasing the PEL. It was due to the PEL which brought the ionic Li+CLO4- charge which could produce ionic bond and improve compatibility.
With the analytic of conductivity, the electric conductivity coefficient between the epoxy resin and PEL would be improved with increasing the PEL. While the PEL content was 20PHR, the electric conductivity coefficient would go to a maximum.
|
|---|
