Synthesis and study of the properties of thermoset oligoimides with propargyl fragment

Fourth interdisciplinary scientific forum with international participation "New materials and promising technologies"

Kolesnikov, T.I.^1^2 ; Tsegelskaya, A.Y.^2 ; Dutov, M.D.^3 ; Orlova, A.M.^1^2 ; Kuznetsov, A.A.^1^2

MIREA-Russian Technological University, Prospekt Vernadskogo, Moscow

86 119571, Russia^1

Enikolopov's Institute of Synthetic Polymer Materials RAS, Profsoyuznaya St. 70, Moscow

117393, Russia^2

N.D. Zelinsky Institute of Organic Chemistry RAS, Leninsky Prospect, Moscow

47 119334, Russia^3

关键词: Crosslinked structures;    High temperature;    N-methyl-2-pyrrolidone;    Oligoimides;    Phthalic anhydrides;    Processing windows;    Side-chains;    Weight loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/525/1/012022/pdf
DOI  :  10.1088/1757-899X/525/1/012022

来源: IOP

【 摘 要 】

A series of thermoplastic oligoimides with a propargyl substituent in the side chain was synthesized by the method of high-Temperature catalytic copolycondensation in the melt of benzoic acid based on the monomer 5-(2-propyn-1-yloxy) benzene-1,3-diamine (PBD), 2,2-bis-[(3,4-di-carboxyphenoxy)phenyl]propane dianhydride (BPADA), 2,2-bis-[(4-Aminophenoxy)phenyl]propane (BAPP) and phthalic anhydride (PA). The uncured imide oligomers showed good solubility (>20 wt% in N-methyl-2-pyrrolidone), wide temperature processing window (>50°C) and also flow well at 220°C. These imide oligomers were successfully converted to cross-linked structures after curing at 300°C. Cross-linked oligomers have a temperature of 5% weight loss >500°C and Tg >200°C.