Synthesis, properties and application of reactive nitrogen-phosphorus flame retardant

HU Wentian; YANG Rong; XU Liang; SONG Yan; LI Jinchun

doi:10.11949/j.issn.0438-1157.20141850

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Synthesis, properties and application of reactive nitrogen-phosphorus flame retardant

更新时间：2025-12-10

- Synthesis, properties and application of reactive nitrogen-phosphorus flame retardant
- CIESC Journal Issue 5, Pages: 1976-1982(2015)
- 作者机构：
  
  常州大学材料科学与工程学院,江苏,常州,213000
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141850
  CLC： 631
- Online First：05 May 2015，
  
  Published：05 May 2015
- 稿件说明：
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HU Wentian, YANG Rong, XU Liang, et al. Synthesis, properties and application of reactive nitrogen-phosphorus flame retardant[J]. CIESC Journal, 2015, (5): 1976-1982.
DOI：

HU Wentian, YANG Rong, XU Liang, et al. Synthesis, properties and application of reactive nitrogen-phosphorus flame retardant[J]. CIESC Journal, 2015, (5): 1976-1982. DOI： 10.11949/j.issn.0438-1157.20141850.

摘要

以六氯环三磷腈(HCCP)、对羟基苯甲醛及亚磷酸二乙酯等为原料

成功合成了一种反应型磷-氮膨胀阻燃剂六(4-磷酸二乙酯羟甲基苯氧基)环三磷腈(HPHPCP)

HPHPCP结构经傅里叶红外光谱(FTIR)、核磁共振(NMR)证实。热失重(TG/DTG)表明HPHPCP具有较高的热稳定性及良好的成炭性

氮气氛下的起始分解温度为162.7℃

800℃时残炭量大于40%(质量分数);利用HPHPCP的羟基结构

应用于硬质聚氨酯泡沫塑料中

可以显著提高聚氨酯硬泡的阻燃性能

添加30%的HPHPCP就可以使聚氨酯氧指数达到27%。

Abstract

A novel reactive flame retardant named hexakis (4-diethyl phosphate hydroxymethyl phenoxy) cyclotriphosphazene (HPHPCP) was synthesized from hexachlorocyclotriphosphazene (HCCP)

p-hydroxy benzaldehyde and diethyl phosphite. Chemical structures of intermediate and HPHPCP were characterized by Fourier-transform infrared spectroscopy (FTIR)

proton and 31P nuclear magnetic resonance (NMR). Thermal stability of the HPHPCP was determined via thermogravimetric analysis (TGA). Halogen-free flame-retardant rigid polyurethane foams (RPU) were prepared by using HPHPCP as a reactive flame retardant. The effect of HPHPCP content on the thermal and flame-retardant properties of RPU was investigated with TGA

and limiting oxygen index (LOI). The temperatures of 5%(mass) loss (T5%) of HPHPCP in nitrogen and air were 162.7℃ and 153.0℃

and the residues at 800℃ of HPHPCP in nitrogen and air were 42.1% and 12.0%(mass)

respectively. HPHPCP could enhance thermal stability of RPU. The T5% of RPU-20%HPHPCP was 193.9℃

20℃ higher than pure RPU. Moreover

limiting oxygen index (LOI) of RPU increased with increasing HPHPCP

and LOI of RPU-30%HPHPCP was 27%.

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