乙炔封端聚异酰亚胺树脂固化特性研究

李斌太;邢丽英;赵彤;刘锋;陈祥宝

航空材料学报 ›› 2011, Vol. 31 ›› Issue (2) : 37-42.

PDF(1434 KB)
PDF(1434 KB)
航空材料学报 ›› 2011, Vol. 31 ›› Issue (2) : 37-42.
论文

乙炔封端聚异酰亚胺树脂固化特性研究

作者信息 +

Investigation of Curing Characterization of Acetylene-Terminated Polyisoimide Oligomer

Author information +
文章历史 +

摘要

采用差示扫描量热(DSC)和原位傅里叶变换红外光谱(FTIR)技术对乙炔封端聚异酰亚胺树脂固化特性进行了研究。利用原位动态和等温条件下的FTIR可以区分树脂单体中异酰亚胺-酰亚胺异构转变和乙炔基交联固化反应并确定各自的温度范围。异酰亚胺-酰亚胺的异构转变的反应温度低于乙炔基交联反应,原因是乙炔基交联固化反应的活化能为106.469kJ/mol,大于异酰亚胺的异构转变的活化能79.635kJ/mol。在200~220℃,乙炔封端聚异酰亚胺树脂可以实现预固化,后处理温度范围为300~350℃。

Abstract

The curing of acetylene-terminated polyisoimide oligomer was investigated using DSC and FTIR spectroscopy.Through dynamic and isothermal FTIR method,the isoimide-imide isomerization and crosslinking reactions of the oligomer was monitored individually and the temperature ranges of these two reactions were clearly determined.The fact that the isomerization occurred at a lower temperature ranges than the crosslinking is attributed to the difference between the activation energies of the two reactions,79.635kJ/mol for isomerization and 106.469kJ/mol for crosslinking.For the acetylene-terminated polyisoimide oligomer considered here,curing reaction was achieved to a sufficient extent at the temperature range of 200~220℃.Posture temperature is in the range of 300~350℃.

关键词

乙炔封端聚异酰亚胺树 / 异构转变 / 交联固化 / 活化能

Key words

acetylene-terminated / isomerization / crosslinking / activation energies

引用本文

导出引用
李斌太, 邢丽英, 赵彤, 刘锋, 陈祥宝. 乙炔封端聚异酰亚胺树脂固化特性研究[J]. 航空材料学报, 2011, 31(2): 37-42
LI Bin-tai, XING Li-ying, ZHAO Tong, LIU Feng, CHEN Xiang-bao. Investigation of Curing Characterization of Acetylene-Terminated Polyisoimide Oligomer[J]. Journal of Aeronautical Materials, 2011, 31(2): 37-42

参考文献

SALLY A Swanson,WILLIAM W Fleming,DONALD C Hofer.Acetylene-terminated polyimide cure studies using 13C magic-angle spinning NMR on isotopically labeled samples[J].Macromolecules,1992,25:582-588.
SONG Gyu-Seok,LEE Jun-Ho,JUNG Seung-Boo,et al.Dynamic t-Tdyn-Tg diagram analysis of thermal isomerization of polyisoimide using complex electric modulus properties[J].Polymer.2007,48:3248-3255.
BOTT R H,TALOR L T,WARD T C.Cross-linking and isomerization reactions of an acetylene-terminated polyisoimide prepolymer[C] //ASC Syrup Set,(Chem React Polym),1988,364:459-470.
CHOW A W,HAMLIN R D,LANDIS A L,et al.Structure-property relations in processing high-performance polyisoimide-imide resins[J].Journal of Rheology,1992,36(8):1651-1668.
SANDY R W,PAINTER P C.Dynamic Fourier TransformIR Analysis of Cure Reactions and Kinetics of Polyimides[C]//ASC Symp Set,(Polym Mater Electron Packag Interconnect),1989,407:49-56.
HUANC W X,WUNDER S L.FTIR Investigation of crosslinking and isomerization reactions of acetylene-terminated polyimide and polyisoimide oligomers[J].Journal of Polymer Science:Part B:Polymer Physics,1994,32:2005-2017.
恽魁宏.有机化学[M].北京:高等教育出版社,1985:219.
HUANC W X,WUNDER S L.A dynamic FT-IR method for determining the curing temperature ranges of an acetylene-terminated polyisoimide prepolymer[J].Journal of Applied Polymer Science,1996,59:511-520.
PDF(1434 KB)

22

Accesses

0

Citation

Detail

段落导航
相关文章

/