Journal of Jianghan University(Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (1): 34-39.doi: 10.16389/j.cnki.cn42-1737/n.2016.01.007

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Synthesis and Characterization of a New Type of Nitrogen-Phosphorus Flame Retardant

DAI Yunli，CHEN Yuhong，CAI Chunfei，CHEN Wei，LIU Yun，HU Siqian*   

  1. Key Laboratory of Optoelectronic Chemical Materials and Devices，Ministry of Education，School of Chemistry and Environmental Engineering，Jianghan University，Wuhan 430056，Hubei，China
  • Online:2016-02-28 Published:2016-03-11
  • Contact: HU Siqian
  • About author:胡思前（1963—），男，教授，硕士生导师，研究方向：特种高分子材料。E-mail：husiqian@126.com

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Abstract: In this paper，9，10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide（DOPO），para aminoacetophenone and aniline as raw materials，para toluenesulfonic acid as catalyst，a new type of nitrogen and phosphorus flame retardant was synthesized under certain conditions by orthogonal experiment method. With DSC testing，it found out the melting point was about 257. 28 ℃，the characteristic peaks of the product was tested by Fourier transform infrared spectroscopy（FT-IR），and the proton peak of the product was characterized by nuclear magnetic resonance hydrogen spectrum instrument（NMR）.The results of orthogonal experiment showed that while para toluenesulfonic acid catalyst dosage was 1% of the DOPO dosage，aniline dosage was 7 times of DOPO molar weight，synthetic yield of target product was 68% under the reaction temperature of 130 ℃ and the reaction time of 24 h.

Key words: DOPO, nitrogen-phosphorus flame retardant, DSC, infrared spectrum, nuclear magnetic resonance（NMR）

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