A study was conducted to improve the thermal stability, fire retardant (FR)\r
properties and rheological properties of ethy-lene vinyl acetate because of\r
its growing use in commercial applications. The approach employed\r
was to modify an organo-clay, Closite 20A (C20A), with transition metal\r
ions (TMI). In this study eight transition metal salts were acquired for\r
modification. It was observed that all TMI modified organoclay\r
nanocomposites improved thermal stability through thermo-gravimetric\r
analysis (TGA). Rheological testing was done using a parallel plate\r
measuring system (PP MS) to determine the dependence of storage\r
modulus and loss modulus of copper and iron modified organoclay\r
nanocomposites relative to pure EVA 350. The process of gelation was\r
also tested for by calculating the ratio between the loss modulus and the\r
storage modulus. It was found that copper modified organoclay\r
nanocomposites promoted gelation and thus decreased the fluidity of\r
EVA 350. The intercalation of the TMI modified organoclays with the\r
polymer matrix was determined by the use of small angle X-ray\r
scattering (SAXS). Testing revealed that the intercalation was\r
successful, further proving that the TMIs had improved thermal stability,\r
FR properties and rheological properties,
「為配合國家發展委員會「推動ODF-CNS15251為政府為文件標準格式實施計畫」，以及
提供使用者有文書軟體選擇的權利，本館檔案下載部分文件將公布ODF開放文件格式，
免費開源軟體可至LibreOffice下載安裝使用，或依貴慣用的軟體開啟文件。」