2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The c...2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The catalyst can be used in reduction for three times.This reduction method has a lower cost,less pollution to environment and suit to the industrializing demand for dye intermediate production.展开更多
采用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)和马来酸(MA)合成了反应型阻燃剂DOPO-MA,并将其引入到醇酸树脂分子链中,制备了不同含磷量的阻燃醇酸树脂,并表征了其结构,研究了燃烧和热分解性能。结果表明:随含磷量增加,醇酸树脂的...采用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)和马来酸(MA)合成了反应型阻燃剂DOPO-MA,并将其引入到醇酸树脂分子链中,制备了不同含磷量的阻燃醇酸树脂,并表征了其结构,研究了燃烧和热分解性能。结果表明:随含磷量增加,醇酸树脂的残炭率逐渐提高,热释放速率峰值(PHRR)与总热释放量(THR)逐渐降低,辐射功率为50 k W/m2时,w(P)为2.5%的阻燃醇酸树脂的残炭率达12.96%,PHRR和THR比改性前分别降低36.9%,44.3%,且w(P)大于2.0%时醇酸树脂的热稳定性有所提高。展开更多
文摘2-nitro-10-hydroxy-5,10-dihydrophenophosphazine-10-oxide can be reduced easily with hydrous hydrazine by Fe/MgO catalyst.The reduced compound was detected by IR and HNMR.It showed that the reduction yield is 94%.The catalyst can be used in reduction for three times.This reduction method has a lower cost,less pollution to environment and suit to the industrializing demand for dye intermediate production.
文摘采用9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物(DOPO)和马来酸(MA)合成了反应型阻燃剂DOPO-MA,并将其引入到醇酸树脂分子链中,制备了不同含磷量的阻燃醇酸树脂,并表征了其结构,研究了燃烧和热分解性能。结果表明:随含磷量增加,醇酸树脂的残炭率逐渐提高,热释放速率峰值(PHRR)与总热释放量(THR)逐渐降低,辐射功率为50 k W/m2时,w(P)为2.5%的阻燃醇酸树脂的残炭率达12.96%,PHRR和THR比改性前分别降低36.9%,44.3%,且w(P)大于2.0%时醇酸树脂的热稳定性有所提高。
