新型磷氮阻燃剂GAP-DOPO的合成制备及其对环氧树脂阻燃性能影响的研究

Synthesis of A New Phosphorus-nitrogen Flame Retardant GAP-DOPO and Study about Its Effect of Flame Retardant Epoxy Resin

摘要:

以3-氨基酚、戊二醛及DOPO为原料制备了一种新型磷氮阻燃剂GAP-DOPO，通过红外、核磁与TGA对阻燃剂的结构及热性能进行了表征；将GAP-DOPO用于阻燃环氧(EP)树脂，并用TGA、SEM对复合材料的热性能及残炭结构进行表征，同时使用垂直燃烧测试仪对试样进行了燃烧测试。结果表明，当GAP-DOPO添加量为30wt%时，可通过UL-94 V-0级测试；TGA显示其在800℃(N2氛围)下，其残炭率由16.3%上升至21.5%，提高了31.9%；同时SEM说明阻燃剂的加入能够明显改善树脂燃烧后残炭形貌，能够增加复合材料的阻燃性能。

Abstract:

A new phosphorus-nitrogen flame retardant GAP – DOPO was prepared with 3-aminophenol, glutaraldehyde and DOPO as raw materials. The infrared, nuclear magnetic and TGA were employed to character the structure and thermal properties of the flame retardant. The GAP - DOPO for flame retardant epoxy resin, the TGA, SEM and Vertical combustion tester were employed to character the thermal properties, structure of carbon residue and the UL-94 of flame retardant epoxy resin; Through the above analysis, when addition 30wt % GSP - DOPO into EP, the UL-94 test was V-0; the TGA show that the carbon residue rate can be increased from 16.3% to 21.5% at 800 ℃ (N2 atmosphere), improved 31.9%; And SEM shows that the addition of flame retardant can obviously change the carbon residue morphology after combustion, increases the flame retardant properties of composite materials.