含硼膨胀型阻燃剂与氢氧化镁的协同阻燃作用

Synergistic Flame Retardant Effect of an Intumescent Flame Retardant Containing Boron and Magnesium Hydroxide.

作者信息

Ai Lianghui, Chen Shanshan, Zeng Jinming, Yang Liu, Liu Ping

机构信息

State Key Laboratory of Luminescent Materials and Devices, Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China.

出版信息

ACS Omega. 2019 Feb 14;4(2):3314-3321. doi: 10.1021/acsomega.8b03333. eCollection 2019 Feb 28.

In this study, to develop an organic/inorganic synergistic flame retardant and to reduce the dosage and cost of flame retardants, organic/inorganic synergistic flame retardants, hexakis(4-boronic acid-phenoxy)-cyclophosphazene (CP-6B), and magnesium hydroxide (MH) were chosen. The flame retardant properties of CP-6B/MH in epoxy resin (EP) were discussed. EP/CP-6B/MH had better flame retardancy and heat resistance compared with EP/CP-6B and EP/MH. A limiting oxygen index of EP/3.0%CP-6B/0.5%MH of 31.9% was achieved, and vertical burning V-0 rating was achieved. Compared with EP, the cone calorimeter dates of EP/CP-6B/MH decreased. CP-6B/MH inhibited combustion and did little to damage mechanical properties. Besides, the flame retardant mechanism was studied by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and pyrolysis-gas chromatography-mass spectrometry. CP-6B/MH exerted good synergistic effects.

在本研究中，为开发一种有机/无机协同阻燃剂并降低阻燃剂的用量和成本，选用了有机/无机协同阻燃剂六（4-硼酸苯氧基）环磷腈（CP-6B）和氢氧化镁（MH）。讨论了CP-6B/MH在环氧树脂（EP）中的阻燃性能。与EP/CP-6B和EP/MH相比，EP/CP-6B/MH具有更好的阻燃性和耐热性。EP/3.0%CP-6B/0.5%MH的极限氧指数达到31.9%，垂直燃烧达到V-0等级。与EP相比，EP/CP-6B/MH的锥形量热仪数据降低。CP-6B/MH抑制燃烧且对机械性能损害较小。此外，通过扫描电子显微镜、能量色散X射线光谱、X射线衍射、傅里叶变换红外光谱和热解气相色谱-质谱对阻燃机理进行了研究。CP-6B/MH发挥了良好的协同作用。