【作者】 朱复红； 邱凤仙； 杨冬亚；

【Author】 ZHU Fu-hong, QIU Feng-xian, YANG Dong-ya (School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China)

【机构】 江苏大学化学化工学院；

【摘要】 以含氟的二胺5,5’-(六氟异丙基)-二-(2-氨基苯酚)及二酐3,3’,4,4’-苯四甲酸二酐(BPDA)为单体。首先合成了经酰胺化的主链上带有活性羟基的含氟聚酰亚胺,再通过Mitsunobu反应将活性生色分子共价链接到聚酰亚胺的侧链骨架上,合成了二阶非线性光学(NLO)含氟聚酰亚胺,采用溶胶-凝胶(sol-gel)技术,并利用偶联剂APTES制备带有发色团的及含有硅氧烷端分子的聚酰胺酸,其中的Si(OR)3基经水解、缩合后,与TEOS在催化剂作用下反应,经杂化、凝胶后,得到光学透明的具有非线性光学的、热稳定性高的杂化材料。将制得的NLO含氟聚酰亚胺/SiO2杂化材料,采用红外光谱(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线衍射(XRD)、示差扫描量热法(DSC)和热重分析(TGA)性能测试装置对材料的结构、表面形貌、热性能进行了表征。更多还原

【Abstract】 In this experiment, the fluorine-containing monomers 2,2-Bis (3-amino-4-hydroxyphenyl) hexafluoropropane (6FHP) and 3,3’, 4,4’-Bisphenyltetracarboxylic (BPDA) were used. It is a first-step preparation of a preimided hydroxy-containing polyimide, followed by the covalent bonding of an active chromophore onto the backbone of the polyimide via the Mitsunobu reaction. The second-order nonlinear optical (NLO) containing fluorine polyimide was synthesized. Thence, sol-gel technique is adopted, utilizing 3-aminopropyltriethoxysilane (APTES) as a coupling agent, poly (amide acid), containing chromophore and alkoxysilane monomers, is synthesized. Si (OR 3) group is hydrolyzed and condensated. It reacts with TEOS in presence of catalyst, via hybridization, gelatinous. The hybrid material is obtained with optics transparent, nonlinear optical, high thermal stability. NLO fluorine-containing polyimides/silica hybrid material is characterized by the methods of FT-IR spectra, Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray diffraction (XRD), Differential Scanning Calorimetry (DSC)and thermogravimetric analysis (TGA) measuring apparatus to get their surface structure, morphology, thermal performance.更多还原