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OALib Journal期刊
ISSN: 2333-9721
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聚苯并双噁唑酰亚胺的热分解动力学研究
DOI: 10.3724/SP.J.1105.2013.12021, PP. 154-159
Keywords: 苯并双噁唑,聚酰亚胺,热降解机理,活化能
Abstract:
采用二步法合成了以2,6-二(对-氨基苯)苯［1,2-d;5,4-d’］二噁唑和1,4-二(3,4-二苯氧基)苯四甲酸二酐(HQDPA)为单体的聚苯并双噁唑酰亚胺.该聚酰亚胺的预聚体聚酰胺酸的黏度为1.70dL/g,经过热环化后能够生成浅黄色的聚酰亚胺薄膜.通过热重分析法研究了聚苯并双噁唑酰亚胺在N2气氛中的热降解机理.采用Flynn-Wall-Ozawa和Friedman法计算了聚苯并双噁唑酰亚胺热降解表观活化能,分别为356.36kJ/mol和370.54kJ/mol,平均值为363.45kJ/mol;反应级数为4.22,指前因子为6.44×1016s-1.采用Coast-Redfern法和Phadnis-Deshpande法研究了聚苯并双噁唑酰亚胺的热降解固相反应机理,认为该聚酰亚胺的热降解机理属于反曲线(A3)机理,是成核和增长模式(Avramiequation2方程)控制的热降解反应,积分形式为g(X)=［-ln(1-X)］3.
| [1] | 3 Tamai S,Kuroki T,Shibuya A,Yamaguchi A.Polymer,2001,42:2373~2378
|
| [2] | 4 Liu Cheng(刘程),Lin Encheng(蔺恩成),Wang Jinyan(王锦艳),Zong Lishuai(宗立率),Jian Xigao(蹇锡高).Acta Polymerica Sinica(高分子学报),2011,(5):560~566
|
| [3] | 7 Meng X L,Huang Y D,Lv Z S,Yu H.e-polymers, 2009,038:1~8
|
| [4] | 8 Li L Q,Guan C X,Zhang A Q,Chen D H,Qing Z B.Polym Degrad Stab,2004,84:369~373
|
| [5] | 9 Gong C L,Li Y F,Yang H X,Wang X L.Chinese J Polym Sci,2011,(6):741~749
|
| [6] | 13 Wang Wei(王玮),Dang Guodong(党国栋),Jia He(贾赫),Li Qingming(李清明),Zhou Hongwei(周宏伟),Zhao Xiaogang(赵晓刚),Chen Chunhai(陈春海).Acta Polymerica Sinica(高分子学报),2011,(11):1273~1277
|
| [7] | 14 Yang M H.J Appl Polym Sci,2002,86:1540~1548
|
| [8] | 15 Dowdy D R.J Therm Anal,1987,32:137~147
|
| [9] | 19 Liu B Y,Zhao X J,Wang X H.J Appl Polym Sci,2003,90:947~953
|
| [10] | 1 Xu Y X, Chen C X,Li J D.Chem Eng Sci,2007,62:2466~2473
|
| [11] | 2 Liou G S,Hsiao S H.J Polym Sci Part A:Polym Chem,2002,40:2564~2574
|
| [12] | 5 Iwata M,Ohnishi A,Hirosawa H,Tohyama F.J Spacecraft Rockets,2001,38:504~509
|
| [13] | 6 Wolfe J F,Arnold F E.Macromolecules,1981,14:909~915
|
| [14] | 10 Lua A C,Su J C.Polym Degrad Stab,2006,91:144~153
|
| [15] | 11 Sun J T,Huang Y D,Cao H L,Gong G F.Polym Degrad Stab,2004,85:725~731
|
| [16] | 12 Montserrat S,Malek J,Colomer P.Thermochim Acta,1998,313:83~95
|
| [17] | 16 Li L Q,Guan C X,Zhang A Q,Chen D H,Qing Z B.Polym Dagrad Stab,2004,84:369~373
|
| [18] | 17 Sun J T,Huang Y D,Gong G F,Cao H L.Polym Dagrad Stab,2006,91:339~346
|
| [19] | 18 Cheng Xiaomin(程晓敏) ,Wang Lechun(汪乐春),Wu Shanshan(吴珊珊).Acta Chim Sinica(化学学报),2009,67:983~988
|
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