可溶性含萘环结构聚醚酮酮醚酮酮的合成

以1-萘酚和1,4-二(4-氟苯羰基)苯为起始原料,经亲核取代反应,合成了一种新的含萘环结构芳醚单体1,4-4-(1-萘氧基)苯羰基]苯(BNOBB)。以路易斯酸无水三氯化铝(AlCl 3)为催化剂,将该单体与对苯二甲酰氯(TPC)和间苯二甲酰氯(IPC)进行缩聚,合成了一种主链含萘环结构的无规共聚物聚醚酮酮醚酮酮(PEKKEKK)。采用傅里叶变换红外光谱仪、核磁共振、差示扫描量热仪、热重分析仪和广角X射线衍射等技术手段对PEKKEKK树脂的结构和性能进行测试。结果表明,该树脂为非晶态结构,具有较高的玻璃化转变温度(T g>181℃)和热分解温度(T 5%>502℃);易溶解于氯仿、1,2-二氯乙烷、N,N-二甲基乙酰胺等有机溶剂中,可涂膜获得透明薄膜;拉伸强度大于83 MPa,力学性能较好。

Synthesis of Soluble Poly(Aryl Ether Ketone Ketone Ether Ketone Ketone)s Containing Naphthalene Ring Structures

1,4-Bis4-(1-naphthoxy)benzoyl]benzene(BNOBB)was successfully synthesized via one-step organic reaction using 1-naphthol and 1,4-bis(4-fluorobenzoy1)benzene as starting materials.A series of soluble random copolymers poly(aryl ether ketone ketone ether ketone ketone)s(PEKKEKK)containing naphthalene ring structures were prepared by polycondensation from this monomer with terephthalic chloride(TPC)and isophthalic chloride(IPC)using Lewis acid anhydrous aluminum chloride(AlCl 3)as catalyst.The structure and properties of the obtained PEKKEKK resins were characterized by Fourier transform infrared spectroscopy(FT-IR),1H nuclear magnetic resonance(1H-NMR),differential scanning calorimetry(DSC),thermogravimetric analyzer(TGA)and wide angle X-ray diffraction(WAXD),etc.The results show that these PEKKEKK resins are amorphous with high glass transition temperature(T g)above 181℃,a thermal decomposition temperature(T d)above 502℃,tensile strength above 83 MPa,and are soluble in chloroform,1,2-dichloroethane(DCE),dimethylacetamide(DMAc)and other organic solvents for coating films.