Preparation and Properties of Epoxy/Clay Nanocomposites

• Main Authors: Ing-Nan Jan, 詹英楠
• Other Authors: Jiang-Jen Lin
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/31901430900852272105

碩士 === 國立中興大學 === 化學工程學系 === 92 === Two types of intercalated and exfoliated silicate platelets were allowed to disperse in the phenol-cured epoxy matrices. It is demonstrated that the different dispersing forms of these silicate platelets in the composites may alter the properties such as hardness, transparency, thermal stability and thermal expansion coefficient. Particularly, the presence of the silicate platelets in the epoxy substantially enhances the hardness from the pristine 2 H to 6 H by loading only 0.5 wt% of the exfoliated platelets and less enhancement from 2 H to 4 H by the intercalated form (d spacing 58 Å). The XRD, TEM and AFM analyses were used to characterize these silicate platelets and silicate-added epoxies. The apparent properties were further correlated with the silicate platelet dispersion in matrix revealed by the TEM observations.