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In order to achieve good dispersion of nano-SiO 2 and increase the interactions between nano-SiO 2 and PU matrix, nano-SiO 2 was firstly modified with poly(propylene glycol) phosphate ester (PPG-P) which was a new polymeric surfactant synthesized through the esterification of poly(propylene glycol) (PPG) and polyphosphoric acid (PPA). Then a series of polyurethane (PU)/SiO...
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