航天复合材料用环氧树脂性能研究

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Research on the properties of epoxy resins for aerospace composite materials

ZU Leil*， WANG Kai 1 ，GENG Hongbo 1 ，GELei 2 ， ZHANG Yixiang³ （1.Hefei University of Technol，Hefei 23Ooo9；2. Beijing University Chemical Technology， Beijing 100029；3.Northeast Forestry University，Harbin 150040）

Abstract：The relationship between mechanical and thermal properties of three high-temperature resistant epoxy resins （TDE-85，AG-8O，andAFG-90）was investigated.Thecuring behaviorand thermalstabilitywerecharacterizedbydifferentialscanning calorimetry （DSC），thermogravimetricanalysis （TGA），anddynamic mechanicalanalysis （DMA）.Thecuring process was monitored using Fourier transform infrared spectroscopy （FTIR），while mechanical properties were determined using auniversal testing machine.Fracture morphology was analyzed via scanning electron microscopy （SEM）.Results showedthatallthreeresinsystems werefullycured.ThetensilestrengthsofTDE-85，AG-8O，andAFG-90 wereall below 50 MPa， with elongation at break less than 5% . Their glass transition temperatures were 189 °C ，253 °C ，and 205 °C ，respectively，while their thermal decomposition temperatures were 283℃， 332°C ，and 311℃，in the sameorder.

Keywords：high temperature resistant resin;filament winding; mechanical properties; heat resistance

1引言

料需同时满足轻量化、高强度、耐烧蚀等严苛要求。（剩余8372字）