AC发泡剂中一种助发泡剂的鉴定

Identification of an Unknown Assistant Blowing Agent in AC Blowing System

目前国内外通过在AC发泡剂中添加各种促进剂进而获得改性AC的方法已成为一种趋势。添加何种改性剂无疑是研究改性AC的关键。因此定性分析AC中的改性剂 ,对改性AC的研发将有极大的帮助。文章应用由作者在VibrationalSpectroscopy上首次提出的薄层色谱显微傅里叶红外联用的方法 ,鉴定出某改性AC中一种罕见添加剂的官能团 ,结合元素分析及化学物性分析等 ,推测出此添加剂的结构。通过对推测物质碎裂机理的解释和未知添加剂质谱图的分析 ,进一部验证了该添加剂为所推测的物质。这种鉴定方法同样适用于AC中其他无标准图谱的改性剂分析。

Recently it has become a trend to modify AC by adding different additives in AC system. In the modification, it is a key question to know what kind of additives should be added. So, qualitatively deformulating the additives will certainly help the research on and development of modifying AC a lot. In this paper, TLC (Thin Layer Chromatograph) was used to separate and purify the unknown assistant blowing agent in AC blowing system. After that, FTIR-Microscope was used to indicate the functional group in the uncommon unknown compound. Through combination of FTIR analysis, elemental analysis and other physical and chemical analysis, the molecular structure of the unknown was deduced. Finally, by explaining the unknown compound's MS spectra, the molecular structure of the unknown was confirmed further. The method can be extended to analyze other additives in AC blowing agent system whose various standard spectra are absent.