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Citation: YANG Xiuyun, CUI Tingting, LI Yunhui, MENG Xiangsheng, YANG Huili, FAN Weifeng, LIU Jingfeng, WANG Zhen. Optimizing the Synthetic Conditions of Polyisoimide Resins[J]. Chinese Journal of Applied Chemistry, ;2012, 29(8): 868-872. doi: 10.3724/SP.J.1095.2012.00380 shu

Optimizing the Synthetic Conditions of Polyisoimide Resins

1.
a School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, China;
2.
b The Engineering Laboratory of Polymer Composite, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China

Corresponding author: WANG Zhen,
Received Date: 30 August 2011
Available Online: 26 October 2011
Fund Project: 国家自然科学基金资助项目(51173178) (51173178)国家"九七三"项目(2010CB631100) (2010CB631100)

Phenylethynyl end-capped polyisoimide oligomers were synthesized in different solvents.The effects of different treatment temperature on melting viscosity and solubility of polyisoimide(PⅡ) and its corresponding polyimide(PⅠ) resins were discussed.The results showed that the effect of treatment temperature on melting viscosity of PⅡ was marginal but conceivable on solubility.The PⅡ exhibited excellent solubility in N-methylpyrrolidone(NMP) and tetrahydrofuran(THF).The PⅡ had less melt viscosity than PⅠ at same treatment temperature.The T_5% of PⅡ oligomer increased with the elevation of treatment temperature.The T_5% is 208℃,323℃ and 382℃ when the temperature of PⅡ treatment is 110℃,150℃ and 180℃,respectively.While the T_5% of cured PⅡ is 550℃ suggesting that had excellent heat resistance.
- polyisoimide,
- polyimide,
- solubility,
- viscosity
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