| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 가을 (10/13 ~ 10/14, 제주 ICC) |
| 권호 | 30권 2호 |
| 발표분야 | 고분자 구조 및 물성 |
| 제목 | Thermal and Dynamic Mechanical Properties of Epoxy Resins Produced by Modified Organoclays |
| 초록 | The inorganic particle filled polymer composites has long been recognized as an economical method to prepare new materials. Among the reinforcing agents, layered silicate clays are good candidates for strengthening of polymers, because their lamellar elements have high surface area, chemical stable siloxane surface, aspect ratio, and strength.1,2 In this work, the layered silicates-reinforced epoxy nanocomposites were prepared by dispersing three oranically modified Na+-montmorillonite (Na+-MMT) in a glassy epoxy resin, i.e., diglycidylether of bisphenol A (DGEBA). 4,4'-Diaminodiphenyl methane (DDM) was used as a curing agent and the content of organoclay was varied from 1 to 4 wt%. The cure behaviors, thermal stabilities, and dynamic mechanical properties of DGEBA/organoclay nanocomposites were systematically studied. Fig. 1 shows the DSC thermograms of DGEBA/organoclay nanocomposites as a function of organoclay content. The peak maximum temperature of the nanocomposites was decreased with increasing the organoclay content. The nanocomposites showed higher glass transition temperature and storage modulus compared with the neat DGEBA matrix. This could be attributed to the incorporation of organoclay into the epoxy network and constrains the movement of chain in the macromolecules, resulting in improving the physical properties of the nanocomposites. Fig. 1. DSC thermograms of DGEBA/organoclay nanocomposites. References 1. C. S. Triantafillidis, P. C. LeBaron, and T. J. Pinnavaia, Chem. Mater., 14, 4088 (2002). 2. S. J. Park, F. L. Jin, and J. R. Lee, Inter. J. Nanosci., 3, 663 (2004). |
| 저자 | 김범용, 이재락, 박수진 |
| 소속 | 한국화학(연) |
| 키워드 | Thermal properties; Epoxy resins; Organoclay |
