2023
DOI: 10.54691/sjt.v5i4.4758
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A Phosphorous-based Polyol for Flame Retarded Rigid Polyurethane Foam

Abstract: A phosphorus-containing polyol (P-polyol) was synthesized with diethyl ethylphosphate (DEEP) and trihydroxymethyl phosphane oxide (THPO) via transesterification reaction, which was introduced into rigid polyurethane foam (RPUF) by in-situ chemical reaction. The optimum synthesis conditions of P-polyol were investigated as follows: butyldihydroxychlorostannane as catalytic agent, the molar ratio of DEEP to THPO was 1:1 at 120-170℃, the yield was over 85%, the apparent viscosity of P-polyol was 1400 MPa.S with t… Show more

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