采用差示扫描量热仪（DSC）和傅立叶变换红外光谱（FT-IR）对新型含醚键和萘环结构双马来酰亚胺（BMPN）树脂体系的固化反应机理进行了研究,结果表明,利用Kissinger和Coats-Redfern方法所得BMPN树脂体系的固化反应活化能分别为117.7 kJ/mol和93.0 kJ/mol,反应级数都接近于1。利用Coats-Redfern方法所得其体系的αgel为47%~50%。原位FT-IR法研究结果表明BMPN体系的固化模式也是马来酰亚胺环中的C=C双键开键交联。
The cure behavior of bismaleimides containing ether linkage(2,7-bis(4-maleimidophenoxy)-naphthalene,BMPN) and naphthalene was studied by nonisothermal DSC and in-situ FT-IR.The results indicate that the activation energy of BMPN resin is 117.7 kJ/mol and 93.0 kJ/mol respectively and the values of n is both close to 1 by Kissinger and Coats-Redfern method.αgel of BMPN resin is within 47%~50% by Coats-Redfern method.This means that the cure kinetics differs below and above this conversion range.The cure reaction was controlled by reaction kinetics below αgel,and was controlled by diffuseness of molecule chains above αgel.In-situ FT-IR spectra reveal that the cross-linking reaction for BMPN resin is due to the C=C group of the maleimide ring-opening polymerization.
参考文献
| [1] | 周宏福,刘润山.双马来酰亚胺树脂的改性研究进展[J].合成技术及应用,2009(02):35-40. |
| [2] | 祝大同.日本印制板用热固性树脂的进展[J].热固性树脂,2000(03):41-46. |
| [3] | 闫红强,王华清,程捷,方征平.含醚键和萘环结构双马来酰亚胺的合成与表征[J].高分子材料科学与工程,2011(11):1-3. |
| [4] | Yan HQ.;Ji L.;Qi GR. .Study on the cure behavior of 2,7-dihydroxynaphthalene dicyanate[J].Journal of Applied Polymer Science,2004(6):3927-3939. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%