Phenylethynyl End-capped Polyimide Oligomers Derived from BTDA

Abstract

Abstract:

A diamine monomer[2,5-bis(4-aminophenoxy)biphenyl(p-TPEQ)] was synthesized by four-step routes, and 4-(1-phenyl ethynyl)-1,8-naphthalic anhydride(PENA) was synthesized and characterized as well. Two series of phenylethynyl\|terminated imide oligomers were prepared by reacting BTDA with p-TPEQ, and end-capped with 4-phenylethynylphthalic anhydride(PEPA) or P
ENA. The thermal curing processes of the oligomers were investigated by FTIR, differential scanning calorimetry. As a result of undergoing a complex reaction of the phenylethynyl in the heating run, T_g increased with the increase of content of
phenylethynyl. The obtained imide oligomers were molded into films. The cured films exhibited excellent mechanical properties and thermo-oxidative stability. All the results indicate that the incorporation of p-TPEQ monomer can increase the solubility and processing ability of the oligomers.

Key words: Polyimide, Oligomer, Phenylethyne, 3,3’,4,4’-Benzophenone-tetracarboxylic dianhydride(BTDA), 1,4-Bis(4’-aminophenoxy)-2-phenylbenzene(p-TPEQ)

CLC Number:

O631

TrendMD:

RAO Xian-Hua, DANG Guo-Dong, ZHOU Hong-Wei, DENG Yong-Qiang, LU Ying-Bin, CHEN Chun-Hai, WU Zhong-Wen. Phenylethynyl End-capped Polyimide Oligomers Derived from BTDA[J]. Chem. J. Chinese Universities, doi: .

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Phenylethynyl End-capped Polyimide Oligomers Derived from BTDA

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