双组分复合材料修补树脂及胶黏剂的固化工艺与动力学  

Curing Process and Kinetics of Two Part Resin and Adhesive Systems Used for Structural Repair of Composites

作　　者：乔海涛 张军营[2] 梁滨 宋江鹏 程珏[2] QIAO Haitao;ZHANG Junying;LIANG Bin;SONG Jiangpeng;CHENG Jue(AECC Beijing Institute of Aeronautical Materials,Beijing 100095;College of Material Science and Engineering,Beijing University of Chemical Technology,Beijing 100029)

机构地区：[1]中国航发北京航空材料研究院,北京100095 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《纤维复合材料》2022年第3期67-73,共7页Fiber Composites

摘　　要：通过原材料选材和配方优化研发了可以在较低温度固化的耐温复合材料修补用树脂及胶黏剂。用纳米橡胶改性可以在不降低耐温性能的情况下显著提高胶黏剂的剪切强度性能。通过动态差示扫描量热分析(DSC)研究了树脂及胶黏剂的固化特性。基于不同升温速率(β)下固化起始温度T_(onset)和峰值温度T_(p)的变化,获得了T_(onset)或T_(p)对lnβ的线性方程,可以更合理地确定固化温度参数。T_(p)对lnβ的线性关系式可以用于解释表观活化能大小的变化规律,即表观活化能(E_(a))约等于RT_(1)^(2)/ΔT。Heat-resistant two part resin and adhesive systems with lower curing temperature were developed by materials’selection and formula optimization.Performance of lap shear strength can be significantly improved when modified by nano-rumber without reduction of heat-resistance.The curing properties of different systems had been investigated by dynamic differential scanning calorimetry(DSC)experiments.Based on changes of the onset temperatures(expressed as T_(onset)) or peak temperatures(expressed as T_(p)) with different heating rate(β),a linear equation of T_(onset) or T_(p) against lnβ was obtained to determine the curing temperature parameters more reasonably.The above linear equation can be used to explain some laws of higher or lower of apparent activation energies(E_(a)),by which the apparent activation energy(E_(a)) is nearly equal to RT_(1)^(2)/ΔT.

关 键 词：树脂 胶黏剂 低温固化 高温使用 DSC热分析 活化能 纳米橡胶 

分 类 号：TB33[一般工业技术—材料科学与工程]