The study of blending property of Epoxy and PPO

• Main Authors: Tung, Ning-Po, 董寧波
• Other Authors: Shyu Shing-Shin
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/19478800638325000757

碩士 === 國立中央大學 === 化學工程學系 === 86 === A series of blends has been prepared by adding a polyphenylene oxide, in varying proportions, to an epoxy resin cured with dicyandiamide. All the materials showed two-phase morphology when characterized by DMA and SEM. The DMA and SEM indicate that partial mixing took place exist in all the mixtures espedially in high PPO content. The tensile yield strengths ofthese blends were found to be independent of PPO content. Another, thedielectric constant also decreased with PPO content in a linear fashion. In order to improve the uniformity and miscibility, triallylisocyanurate(TAIC) has been used as an in situ compatibilizer for the polymer blendsof epoxy and PPO (30phr). TAIC is miscible in Epoxy and the PPO chains are bound to TAIC network. SEM and DMA showed the improvement of miscibility andsolvent resistant in this system. The fracture toughness and dielectric constant of these TAIC-modified systems were also found to be improved by adding TAIC (0 TO 20phr).