宇航材料工艺2024，Vol.54Issue(4)：15-22,8.DOI:10.12044/j.issn.1007-2330.2024.04.002
复合材料胶接用发泡胶的工艺验证与固化动力学
Process Validation and Cure Kinetics of Foam Adhesive for Composite Bonding
乔海涛 1梁滨 1李喜民 2陈舸 3张立国2
作者信息
- 1. 中国航发北京航空材料研究院,北京 100095
- 2. 中航工业第一飞机设计研究院,西安 710089
- 3. 西安飞机工业(集团)有限公司,西安 710089
- 折叠
摘要
Abstract
The curing process and cure kinetics of a moderate-temperature-curing adhesive foam had been investigated by dynamic differential scanning calorimetry(DSC)experiments.To confirm a linear relationship between the peak temperatures(Tp)of DSC curves and the natural logarithm of heating rates(β),in addition to the combination of heating rates β of 5,10,15 and 20 K/minin DSC tests,heating rates β of 1,2.718,7.389 and 20 K/min were designedly set,so that lnβ would be equal and approximate to 0,1,2 and 3 for easy calculation,thus curing parameters and the apparent activation energy(Ea)could be easily and quickly determined.Empirical linear relationships between Tp with lnβ had been sustained by a series of literature data about heating cure,thermal decomposition and crystallization of some polymers.Using the characteristic temperature parameters T1 and ΔT obtained from the above linear relationship,the magnitude of the activation energy(Ea)could be explained and the kinetic data could be quickly solved.The results have established and proved a simple and reliable kinetic solution other than methods by Kissinger and Ozawa.The simple method for solving the kinetic parameters of thermal-induced reaction or crystallization change is reasonable and effective.关键词
发泡胶/固化工艺/活化能/Tp-lnβ外推法/极限法Key words
Adhesive foam/Curing process/Apparent activation energy/Tp-lnβ extrapolation method/Method of mathematical limit分类
化学化工引用本文复制引用
乔海涛,梁滨,李喜民,陈舸,张立国..复合材料胶接用发泡胶的工艺验证与固化动力学[J].宇航材料工艺,2024,54(4):15-22,8.
