Preparation, Characterization, and Flame Retardancy of Novel Rosin-Based Siloxane Epoxy Resins
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- 作者：Lianli Deng ; Minmin Shen ; Jing Yu ; Kun Wu ; Chengyong Ha
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2012
- 出版时间：June 20, 2012
- 年：2012
- 卷：51
- 期：24
- 页码：8178-8184
- 全文大小：360K
- 年卷期：v.51,no.24(June 20, 2012)
- ISSN：1520-5045
文摘
A series of novel rosin-based siloxane epoxy resins (AESE copolymers) were prepared by the reaction of ethylene glycol diglycidyl ether modified acrylpimaric acid (AP-EGDE) with poly(methylphenylsiloxane). The chemical structures of the produced epoxy resins were determined by FTIR, 1H-NMR, 13C-NMR, and epoxy equivalent weight (EEW) test. After modification, the tensile strengths of AESE (20鈥?0) are slightly lower than that of AP-EGDE; however their breaking elongations are higher than that of AP-EGDE remarkably. TGA results reveal that the thermal stability of AESE serials is better than that of AP-EGDE due to the formation of a protective residue. The char residue of AESE increases at 700 掳C with its silicon content increases. Nevertheless, there is a peak LOI value for AESE when its silicon content is 30%. Moreover, the chemical structures of char at the end of the LOI test were analyzed by FTIR. The results confirmed the formation of the protective residue.