Minth University of Science and Technology:Item 987654321/1103
English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 330/331
造訪人次 : 2910513      線上人數 : 49
RC Version 5.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 進階搜尋

請使用永久網址來引用或連結此文件: http://mitustr.lib.mitust.edu.tw:8080/ir/handle/987654321/1103

題名: Studies of Silicon-Containing Bismaleimide Resins. Part I: Synthesis and Characteristics of Model Compounds and Polyaspartimides
作者: 疏偉傑
Shu, Wei-Jye
Tsai, Ruey-Shi
關鍵詞: Silicon-containing bismaleimide resins
reactive flame-retardants
polyaspartimides
focused microwave irradiation
日期: 2010
上傳時間: 2014-12-29 13:24:46 (UTC+8)
摘要: A series of silicon-containing bismaleimide ((4,4-bismaleimido phenoxy) silane, BMI) monomers has been synthesized by a two-step reaction for use as flame retardant or modifier of general resins. The synthesized BMI monomers are characterized by the 1H-, 13C- and 29Si-NMR spectroscopy and element analysis. These BMI monomers were reacted with free radical initiator to prepare silicon-containing BMI polymers and also with various aromatic diamines to prepare a series of polyaspartimides as reactive flame-retardants by focused
microwave irradiation. The polymerization degrees of polyaspartimides depend on the alkalinity and nucleophility of diamines as chain extenders. Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) have been used to study the thermal properties of all the BMI resins such as the melting temperature, curing temperature, glass transition temperature (Tg) and thermal resistance. All the silicon-containing BMI resins, except BMI polymers, have a Tg in the range of 155–162◦C and 5% weight loss temperatures (T5%) of 361–380◦C and 358–377◦C in air and nitrogen atmosphere, respectively. The higher heat resistance of cured BMI resin relative to BMI polymer is due to its higher cross-linking density.
Since the re-cross-linking reactions of BMI polymers and polyaspartimides occur more easily in the oxidation environment, their thermal stabilities in air are higher than those in nitrogen gas. In addition, thermal decomposition properties of polyaspartimides depend on their structures and compositions of both diamine segments and BMI segments.
顯示於類別:[生活應用科技系] 專書、期刊論文或研討會議論文

文件中的檔案:

檔案 描述 大小格式瀏覽次數
DMP-1.pdf559KbAdobe PDF1299檢視/開啟


在MITUSTIR中所有的資料項目都受到原著作權保護.

 


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋