桐油聚酰亚胺酸酐/环氧固化体系动力学模型研究

通过示差扫描量热分析和热重分析以及力学性能测试研究了环氧树脂与自制的N,N-间苯撑双马来酰亚胺型桐油聚酰亚胺酸酐(HVAT酸酐)与N,N-4,4-二苯甲烷双马来酰亚胺型桐油聚酰亚胺酸酐(BMIT酸酐)固化体系的性能及固化反应动力学并与桐油酸酐/环氧固化体系作了对比。结果表明:3种体系的表观活化能分别为89.54,85.42和84.78 k J/mol,反应级数均为0.92,最优固化条件为100℃/2 h+120℃/2 h+150℃/1 h。桐油聚酰亚胺酸酐/环氧固化体系的拉伸强度分别为36.42、38.60 MPa,弯曲强度分别为57.19、46.68 MPa,压缩强度分别为108.15、116.97 MPa,剪切强度分别为13.73、15.57 MPa,综合力学性能显著强于桐油酸酐/环氧固化体系。The properties and curing reaction kinetics of the curing systems of epoxy resin using self-made N,N-m-phenylene bismaleimide-type tung oil polyimide anhydride (HVAT anhydride) and N,N-4,4-diphenylmethane bismaleimide-type tung oil polyimide anhydride (BMIT anhydride) as curing agents were investigated via differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and mechanical property tests, and compared with the tung oil anhydride/epoxy curing system. The results indicated that the apparent activation energies of the three systems were 89.54, 85.42, and 84.78 kJ/mol respectively, with the reaction orders all being 0.92. The optimal curing conditions were determined as 100℃/2 h + 120℃/2 h + 150℃/1 h. The tensile strengths of the two tung oil polyimide anhydride/epoxy curing systems were 36.42 and 38.60 MPa, flexural strengths were 57.19 and 46.68 MPa, compressive strengths were 108.15 and 116.97 MPa, and shear strengths were 13.73 and 15.57 MPa respectively. Their comprehensive mechanical properties were remarkably superior to those of the tung oil anhydride/epoxy curing system.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于桐油聚酰亚胺酸酐/环氧固化体系的动力学模型研究，通过热分析和力学性能测试，对比了不同酸酐固化体系的表观活化能、反应级数及最优固化条件。结果表明，桐油聚酰亚胺酸酐/环氧固化体系在拉伸、弯曲、压缩和剪切强度方面均优于桐油酸酐/环氧固化体系，综合力学性能显著提升。