固体火箭技术2025，Vol.48Issue(2)：291-298,8.DOI:10.7673/j.issn.1006-2793.2025.02.014
高硅氧/酚醛复合材料老化活化能的快速测定方法
A rapid evaluation method for aging activation energy of the high-silica/phenol resin composites
孟祥泽 1李亮辰 1叶焱 1唐国烁 1杨睿 1王剑飞 2边磊 2周文清 2蔺跃龙2
作者信息
- 1. 清华大学 化学工程系,北京 100084
- 2. 内蒙动力机械研究所,呼和浩特 010010
- 折叠
摘要
Abstract
Under the conditions of thermal oxygen aging and hygrothermal aging,the activation energies of three kinds of high-silica/phenolic composite samples prepared by molding,glued and filament winding process were rapidly measured by means of in-situ FTIR method.Through this method,trace amounts of CO2 on the order of 10-5 mol/L were detected within a testing period of merely 4 hours.The generation of CO2 obeys to the Arrhenius equation under both thermal-oxidative aging and hygrothermal aging condition.Under the condition of dry heat aging,the aging activation energies of three samples prepared by the molding,glued and filament winding process are 51.52,44.58 and 60.66 kJ/mol,respectively.Under hygrothermal conditions,the aging activation ener-gies are 72.89,54.26 and 61.02 kJ/mol,respectively.Humidity can significantly improved the temperature sensitivity of molding and glued samples to temperature,but has no obvious effect on the filament winding samples.Density functional theory calculations show that the generation of CO2 is associated with the aging of the phenolic resin network structure.In summary,this method can be used for rapid evaluation of the aging performance of high silicone/phenolic composites.关键词
高硅氧/酚醛/原位红外/热氧老化/湿热老化/活化能/快速评价Key words
high-silica/phenol resin/in-situ FTIR/thermo-oxidative aging/hydro-thermal aging/activation energy/rapid evaluation引用本文复制引用
孟祥泽,李亮辰,叶焱,唐国烁,杨睿,王剑飞,边磊,周文清,蔺跃龙..高硅氧/酚醛复合材料老化活化能的快速测定方法[J].固体火箭技术,2025,48(2):291-298,8.
