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A DOPO‐base Schiff derivative used as a flame retardant for polystyrene
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-03-15 , DOI: 10.1002/app.49224
Yu Sun 1, 2 , Yazhen Wang 1, 3 , Yingbo Qing 1, 2 , Xueying Wu 1, 2 , Zhen Shi 1, 3
Affiliation  

A novel 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO)‐based Schiff base derivative, 6,6′‐(1,4‐phenylenebis (((3‐hydroxyphenyl)amino) methylene)) bis (dibenzo [c,e] [1,2] oxaphosphinine 6‐oxide) (SD), was synthesized and applied to polystyrene. The structure of terephthalaldehyde dihydroxymethane benzene and SD are characterized by Fourier‐transform infrared (FTIR) spectroscopy, 1H‐nuclear magnetic resonance spectroscopy, and elemental analysis. The results of thermogravimetric analysis tests show that the residue of the SD/PS composites increased from 0.21 to 7.09% with the increase of SD content, indicated that the thermal stability of the SD/PS composites was significantly improved. The introduction of SD also efficiently ameliorated the flame‐retardant property of SD/PS composites with limiting oxygen index increased by 33.15%, rated UL‐94 vertical burning test V‐0 rating, lower peak heat release rate, and total heat release. The mechanism of SD/PS composite was explored by scanning electron microscopy images and FTIR spectra of residue of SD/PS composites after calcination by muffle furnace. These tests prove that SD can be used as an effective polystyrene (PS) flame retardant.

中文翻译:

基于DOPO的Schiff衍生物用作聚苯乙烯的阻燃剂

一种新型的9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)基席夫碱衍生物,6,6'-(1,4-亚苯基(((3-羟苯基)氨基)亚甲基) )合成了双(二苯并[c,e] [1,2]氧膦膦6-氧化物)(SD)并将其应用于聚苯乙烯。对苯二甲醛二羟基甲烷苯和SD的结构通过傅立叶变换红外光谱(FTIR)进行表征,1H核磁共振波谱和元素分析。热重分析测试结果表明,随着SD含量的增加,SD / PS复合材料的残留量从0.21增加到7.09%,表明SD / PS复合材料的热稳定性得到了显着改善。SD的引入还有效改善了SD / PS复合材料的阻燃性能,极限氧指数提高了33.15%,额定UL-94垂直燃烧测试V-0额定值,降低了峰值放热率,并释放了总热量。通过扫描电子显微镜图像和马弗炉煅烧后SD / PS复合材料残余物的FTIR光谱,探讨了SD / PS复合材料的机理。这些测试证明SD可以用作有效的聚苯乙烯(PS)阻燃剂。
更新日期:2020-03-15
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