AFG-90基固体浮力材料的固化动力学与性能研究

Study on Curing Kinetics and Properties of AFG-90 Based Solid Buoyancy Materials

摘要: 为了确定N，N-二缩水甘油对氨基苯酚缩水甘油醚环氧树脂（AFG-90）/四氢邻苯二甲酸酐（THPA）的固化工艺，采用非等温DSC法研究了固化反应动力学，制备了添加空心玻璃微珠（HGM）的固体浮力材料.结果表明， m_AFG-90：m_THPA=1：1为最佳配比；Kissinger法计算的表观活化能E为67.72 kJ·mol^-1，指前因子lgA为8.20 s^-1；最概然机理函数为Avrami-Erofeev方程；固化工艺为100℃，1.0 h，125℃，2.5 h；添加HGM的固体浮力材料的密度为0.90 g·cm^-3，压缩强度为113 MPa.

Abstract: In order to determine the curing process of N,N-diglycidyl p-aminophenol glycidyl ether epoxy resin (AFG-90)/tetrahydrophthalic anhydride (THPA), curing reaction kinetics was studied by non-isothermal differential scanning calorimetry (DSC) method, and the solid buoyancy material with hollow glass microbeads (HGM) was prepared. Results show that the best ratio of AFG-90/THPA is 1:1. The apparent activation energy (E) and pre-exponential factor (lg A) obtained by Kissinger method are 67.72 kJ· mol^-1 and 8.20 s^-1, respectively. The most probable mechanism function of curing process can be described as Avrami-Erofeev equation. The curing process is 100℃, 1.0 h and 125℃, 2.5 h. The density and compressive strength of solid buoyancy material are 0.90 g· cm^-3 and 113 MPa, respectively.