热重法研究含氟聚酰胺酸的亚胺化反应动力学  

Imidization Kinetics of a Fluorinated Poly(Amic-Acid) by TG Method

作　　者：高爱娟[1] 刘华[1] 董殿权[1] 王春芙[1] 林润雄[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《高分子材料科学与工程》2008年第11期138-140,144,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(10576017)

摘　　要：采用动态热重法(TG)对4,4’-二氨基二苯氧基丙烷(BAPP)和4,4’-六氟亚异丙基-邻苯二甲酸酐(6FDA)缩聚生成的含氟聚酰胺酸动力学进行研究。采用积分法结合31种动力学函数来判断亚胺化反应的函数g(α),由Ozawa、KAS和迭代法求取活化能Ea值。从而得到了亚胺化反应的动力学参数,即反应的动力学函数为g(α)=(1-α)-1-1,平均活化能Ea=81.93 kJ/mol,指前因子A的平均值为1.91×109s-1。Dynamic TG was used to study the imidization kinetics of the fluorinated poly（amic-acid） film. The film was synthesized by condensation polymerization of 2, 2-Bis[4-（4-aminophenoxy）- phenyl] propane （BAPP） and 2, 2-his （ 3, 4-anhydroclicarboxyphenyl） hexafluoropropane （6FDA）. Integral method with 31 types of kinetic function was proposed to define the most probable kinetic function g （α）;the Ozawa, KAS and iterative procedure methods were employed to calculate the activation energy Eα. The imidization kinetic parameters were deter mined, which the most probable kinetic function belonged to g（α）= （1-α）^- 1-1, the average activation energy Eα was 81.93 kJ/ mol and the pre-exponential A was 1.91 × 10^9 s^-1.

关 键 词：含氟聚酰胺酸 亚胺化反应 热重法 动力学 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]