宇航材料工艺2024，Vol.54Issue(6)：105-112,8.DOI:10.12044/j.issn.1007-2330.2024.06.015
羧基亚硝基氟橡胶在液相四氧化二氮中的老化行为
Study on Aging Behavior of Carboxy Nitroso Fluororubber in Liquid Dinitrogen Tetroxide
李少范 1苏允兰 1张欢 2许文 2赵莹1
作者信息
- 1. 中国科学院化学研究所,北京 100190
- 2. 航天材料及工艺研究所,北京 100076
- 折叠
摘要
Abstract
The aging behavior of carboxy nitroso fluororubber in a liquid dinitrogen tetroxide(N2O4)medium was investigated using several analytical techniques.The results indicated that the glass transition temperature(Tg)of the samples did not change significantly with the increase of aging days,but the thermal stability of the samples decreased and swelling ratio increased.Meanwhile,microcracks gradually appeared on the surface of the samples.These results indicate the samples gradually aged in the liquid medium.X-ray photoelectron spectroscopy(XPS)results revealed that compared to the unaged samples,the proportion of elements on the surface of the aged samples did not change significantly,but some crosslinking points were destroyed.The thermogravimetric analysis-Fourier transform infrared spectroscopy-gas chromatography/mass spectrometry(TGA-IR-GC/MS)result showed that the surface modifier of silica filler undergo oxidation in N2O4 medium during the aging process,thus reducing the thermal stability of the samples.关键词
羧基亚硝基氟橡胶/热稳定性/表面形貌/老化行为Key words
Carboxy nitroso fluororubber/Thermal stability/Surface morphology/Aging behavior分类
化学化工引用本文复制引用
李少范,苏允兰,张欢,许文,赵莹..羧基亚硝基氟橡胶在液相四氧化二氮中的老化行为[J].宇航材料工艺,2024,54(6):105-112,8.
