含磷聚醚醚酮酮砜的合成与表征

聚芳醚酮(PAEK)具有优良的热性能、机械性能、电绝缘性能及耐化学药品性,在航空航天、电子电器、核能工业以及民用高技术领域有着广泛的应用1].聚芳醚酮熔融温度高且难溶于一般有机溶剂,不易加工.为改善聚芳醚酮的溶解性和加工性,可采取在主链中引入大的侧基、柔性基团、扭曲的非平面结构和采用共聚等方法2～5].

SYNTHESIS AND CHARACTERIZATION OF A PHOSPHORUS-CONTAINING POLY(ETHER ETHER KETONE KETONE SULFONE)

A new kind of phosphorus-containing monomer bis(4-(p-fluorobenzoyl)phenyl)phenylphosphine oxide was synthesized first,then a poly(aryl ether ketone) containing phosphorus in the main ring was synthesized,derived from bis(4-(p-fluorobenzoyl)phenyl)phenylphosphine oxide and bisphenol-S by nucleophilic copolycondensation with the use of sulfolane as solvent.The structure was confirmed by FT-IR,()~(31)P-NMR and()~1H-NMR.Electrical property,mechanical property,heat-resistance property,combustion-resistance and solubility was also researched to know the influence of the containing of phosphorus.The results showed that the polymer have excellent heat-resistance,the glass transition temperature(T_g) was 235℃.The onset temperature taken at 5% weight loss of the polymer in nitrogen was 463℃.The polymer was soluble in CH_2Cl_2,CHCl_3,Cl_2(CH)_2Cl_2,Cl(CH_2)_2Cl and strongly polar organic solvents such as(N,N-dimethylformamide)(DMF),N-methyl_2_pyrrolidone (NMP) at room temperature.