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以间、对苯二甲酰氯(IPC)、(TPC)、双酚芴(BHPF)和双酚A(BPA)为单体,采用相转移催化界面缩聚法合成了双酚芴型共聚芳酯(PAR-F/A)。结果表明,该系列共聚芳酯的玻璃化转变温度(Tg)和塑化温度(Ts)随双酚芴结构单元比例的增加而提高,当BHPF与BPA物质的量比为15-30比85-70时,Tg为209.5℃-228.3℃,Ts为282℃-298℃;热失重5%的温度(Td)达394℃-415℃。PAR-F/A为无定型聚集态,能溶解于常见的卤代烃和强极性非质子有机溶剂,采用流延法可制备成坚韧透明的薄膜,其拉伸强度达58 MPa-69 MPa,断裂伸长率为10.8%-12.2%,弹性模量为1.1 GPa。共聚物具有优良的耐热性能和力学性能。
Bisphenol fluorene-type copolyaryl ester was synthesized by the phase-transfer catalytic interfacial polycondensation method using IPC, TPC, BHPF and BPA as monomers. PAR-F / A). The results show that the glass transition temperature (Tg) and plasticization temperature (Ts) of the copolyesters increase with the increase of the ratio of the structural units of bisphenol fluorene. When the ratio of BHPF to BPA is 15-30, 70, the Tg is 209.5 ℃ -228.3 ℃, Ts is 282 ℃ -298 ℃; the temperature (Td) 5% of weight loss is 394 ℃ -415 ℃. PAR-F / A is an amorphous aggregated state that dissolves in common halohydrocarbons and strongly polar aprotic organic solvents. The cast film can be prepared as a tough, transparent film with a tensile strength of 58 MPa-69 MPa , Elongation at break of 10.8% -12.2% and modulus of elasticity of 1.1 GPa. Copolymer has excellent heat resistance and mechanical properties.