The radiolytic stability of some hydrofluoroethers and hydrofluorocarbons was investigated and compared with those of perfluoropolyethers (PFPEs) and the CCl2FCClF2 (CFC 113). The experimental results indicate that stability depends mainly on the relative abundance of hydrogen atoms in the molecule; however, a significant role is played also by the chemical structure (i.e. the relative positions of
研究了某些氢
氟醚和氢
氟碳化合物的辐射稳定性,并将其与
全氟聚醚(
PFPE)和CCl 2 FCClF 2(CFC 113)的辐射稳定性进行了比较。实验结果表明,稳定性主要取决于分子中氢原子的相对丰度。然而,
化学结构(即分子中氢原子的相对位置)也起着重要作用。其结果是,含有氢原子作为OCF分子2与其他氢
氟化合物相比,H链端显示出更高的稳定性。基于对最终产物的分析和EPR检测到的自由基的性质,提出并讨论了辐射分解机理。由于它们的高偶极矩,氢
氟化合物和CCl 2 FCClF 2主要通过离子机理降解。