| 摘要 |
<p>A method for preparing series of terpolymer of poly (diphenyl ether sulfone) and poly (diphenyl ether diphenyl sulfone) comprises: adding high temperature organic solvent, stirring and heating; sequentially adding 4,4'-dihydroxydiphenyl, 4,4'-dichlorodiphenyl sulfone and 4,4'-Bis(4-chloropl-ienyl)sulfonyl-1,1'-biphenyl; after all the monomers are completely dissolved, heating to 100°C and adding alkali metal carbonate salt-forming agent which is 5-10 mol % more than the amount of 4,4'-dihydroxydiphenyl added, and subsequently adding xylene; continuously heating and salt-forming reaction begins in the system, and controlling the temperature at 190ˆ¼210°C; then heating to 230ˆ¼236°C, and maintaining for 3-4 hours to obtain polymer viscous liquid; and refining the polymer viscous liquid to obtain a terpolymer containing different structural units in the molecular chain, wherein the Tg or the terpolymer can be regulated by changing the ratio of the two dichloro-containing monomers.</p> |
