Abstract: Through the electrophilic addition reaction of —P(O)—H and C=C，a novel phosphorus-containing maleimide phenolic resin was synthesized and used as curing agent for preparing high performance，flame retardant epoxy resins. The structure of the resin was confirmed with FTIR and elemental analysis. Thermal properties and thermal degradation behavior of the thermosetted resin was investigated by using differential scanning calorimetry （DSC） and thermogravimetric analysis （TGA）. High glass transition temperature （145.4℃） and high char yield （700℃ 49.5%） were observed for the P-PMF/CNE cured resins. A sample containing 1.48%（mass ratio） phosphorus had limiting oxygen index values of 33.3. The developed resin may be used potentially as a “green” curing agent in electronic fields.

摘要： 通过亚膦酸酯与碳碳双键之间的亲电加成反应，合成了一种新型的含磷马来酰亚胺酚醛树脂。采用红外光谱（FTIR）和元素分析法对聚合物的结构进行了表征。并用此含磷酚醛树脂作为环氧树脂的固化剂制得了一含磷氮的环氧固化物。采用热分析法、极限氧指数法对相应环氧固化物的耐热性能和阻燃性能进行了表征。研究结果表明:以该含磷聚合物作为环氧树脂的固化剂，对稳定固化物骨架碳的结构和交联成炭能力的提高起到了增强作用；环氧固化物具有较高的玻璃化转变温度（145.4 ℃）和较高的热稳定性（T5% 308 ℃），极限氧指数显示其具有较好的阻燃性能。