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Trialkoxy–terminated benzoxazine monomer was synthesized using bisphenol A (BPA), 3–aminopropyltriethoxysilane (KH–550) and paraformaldehyde. Subsequently, bisphenol F epoxy resin (F51) was pretreated with 3–isocyanatopropyltriethoxysilane (IPTS) to covalently introduce trialkoxy group into the epoxy molecular. Sol–gel process was then initiated with tetraethoxysilane (TEOS) as precursor to introduce...
Bisphenol A and bisphenol F epoxy resins (BA and BF) were chemically modified by 9,10‐Dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide to improve their liquid oxygen compatibility. The structures of the modified epoxy resins were confirmed by Fourier transform infrared spectroscopy. Significant enhancement of liquid oxygen compatibility for the modified resins was detected according to the liquid oxygen...
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