以六氯环三磷腈、对羟基苯甲醛及9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物（DOPO）等为原料,合成出新型单组分磷-氮膨胀阻燃剂六（4-（9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物）-羟甲基苯氧基）环三磷腈（Ⅴ）,其结构经红外光谱（IR）、质谱（MS）和核磁共振（1H-NMR）表征。热失重分析表明,化合物（Ⅴ）具有较高热稳定性和良好成炭性,起始分解温度为195℃,800℃时炭残量达50.3%。扫描电镜观测发现,500℃时,化合物（Ⅴ）产生连续、致密、光滑、均匀的膨胀炭层。变温红外光谱研究表明,当温度从200℃加热至700℃时,化合物（Ⅴ）官能团强度逐渐由强变弱,并在1631 cm-1处产生新的芳香环炭层结构吸收峰。
The monomolecular P-N intumescent flame retardant hexalis-（ 4-DOPO-methanolphen-oxy）- cyclotriphosphazene （I）OPOMPC） （V） was synthesized via hexachloroeyelotriphosphazene, 4-hydroxybenaaldehyde and DOPO by a two step reaction and its structure was identified and studied by Fourier transform infrared spectra （FT-IR）, 1H nuclear magnetic resonance spectrum （IH-NMR）and mass spectrometry （MS） analyses. The thermogravimetry shows that the flame retardant has high thermal stability and excellent char-forming ability. The beginning temperature of the compound （ V ） decomposition is above 195 E, and the char yield is about 50.3 % at 800℃. Scanning electron microscopy （SEM） observation reveals that the continuous, intact, strong and closed intumescent charred layers are formed in the compound （ V ） specimen after burning at 500℃. Fourier transform infrared （FT-IR） spectroscopy shows that the absorption intensity of functional group from the compound （V） becomes from strength to weak when being heated from 200℃ to 700℃. The charred layers of the compound （V） show a new poly-aromatic structure absorption at 1631 cm-1.
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