Dissertation/ Thesis
The study of thermal stability of naphthalene based epoxy
| العنوان: | The study of thermal stability of naphthalene based epoxy |
|---|---|
| Alternate Title: | 萘系環氧樹脂熱安定性質之研究 |
| المؤلفون: | 劉璨銘 |
| Thesis Advisors: | 段葉芳 |
| سنة النشر: | 2002 |
| المجموعة: | National Digital Library of Theses and Dissertations in Taiwan |
| الوصف: | 90 Three naphthalene derivative epoxies have been synthesized in this study, These naphthalene derivatives are 1. diglycidyl ether of 1,5-dihydroxynaphthalene ( A ) 2. diglycidyl ether of 2,7-dihydroxynaphthalene ( B ) 3. diglycidyl ether of 1,1’-bi-2- naphthol ( C ) Three rigid rod epoxies, have been synthesize 1. 4,4’-bis(2,3-epoxypropoxy) benzylideneaniline ( D ) 2. 2,2’-biphenol epoxy ( E ) 3. 4,4’-biphenol epoxy ( F ) These epoxies were characterized by using NMR, FT-IR, and EEW, then the resins were cured stoichiometrically with 4,4’-methylenedianiline(DDM), we use different -ial scanning calorimeter (DSC) to find the best condition by dynamic heating rate. Thermogravimetric analyzer(TGA), limited oxygen index tester(LOI) and Cone Calorimeter(CONE) were used to analyze the thermal properties of the naphthalene and bezene derivative. The DSC results show that ( A ), ( C ), ( D ) all exhibit a glass transition temperature ( Tg ) above 200℃, where ( B ) has the highest reaction activation energy. The TGA results suggest that the naphthalene based epoxies exhibit higher degradation temperature, in which there was just 31.5% of ( A ) in char yield. The LOI for ( B ) and ( F ) have the highest value of 30 .Although ( C ) contain the high test number of benzene rings, but it didn’t show the best thermal stability effect. Finally, we tested all epoxies with Cone Calorimeter, and fund that sample ( D ) has highest TTI/PkHRR value, and compared with LOI, they had the same result, excet for ( D ). |
| Original Identifier: | 090TIT00063013 |
| نوع الوثيقة: | 學位論文 ; thesis |
| وصف الملف: | 96 |
| الاتاحة: | http://ndltd.ncl.edu.tw/handle/68970037233765984906 |
| رقم الانضمام: | edsndl.TW.090TIT00063013 |
| قاعدة البيانات: | Networked Digital Library of Theses & Dissertations |
| الوصف غير متاح. |