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High‐performance aromatic thermosetting resins with hydroxyl and ethynyl groups
Author(s) -
Yang Ming,
Shi Song,
Wang Mingcun,
Luo Zhenhua,
Qiu Wenfeng,
Wang Yuhui,
Feng Zhihai,
Zhao Tong
Publication year - 2011
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1630
Subject(s) - differential scanning calorimetry , materials science , thermogravimetric analysis , thermosetting polymer , thermal stability , fourier transform infrared spectroscopy , polymer chemistry , gel permeation chromatography , yield (engineering) , elemental analysis , char , nuclear chemistry , chemical engineering , composite material , organic chemistry , polymer , chemistry , pyrolysis , physics , engineering , thermodynamics
A novel hydroxyl‐ethynyl‐arene (HEA) resin was synthesized via Aldol condensation and Sonogashira reaction. The structure of the obtained resin was confirmed by the techniques of mass spectroscopy (MS), gel permeation chromatography (GPC), proton nuclear magnetic resonance spectroscopy ( 1 H‐NMR), Fourier transform infrared spectroscopy, (FT‐IR) and elemental analysis (EA). Differential scanning calorimetry (DSC) results showed an exotherm at the temperature range of 187°C–245°C, attributable to crosslinking reaction of the acetylene groups. After thermal cure, the obtained cured resin possessed excellent thermal stability. Thermal gravimetric analysis (TGA) in nitrogen showed the Td 5 (temperature of 5% weight loss) was about 400°C, and the char yield in nitrogen was about 78% at 900°C. The laminate composite of HEA resin was prepared and its mechanical and thermal properties were determined. The usefulness of the HEA resin as matrix for ablative composite was evaluated. Copyright © 2010 John Wiley & Sons, Ltd.