This paper is a review about the types of bonding agents used in propellants, as well as the main polymeric matrices used in thermal insulation applied in the rocket engines studied throughout the last decades. This paper aims to show the importance both of the bonding agents in the composition of the propellant and of the thermal insulation coating the rocket engine, which is in contact with the propellant grain. This paper also shows many researchers have been applied, in different spectral regions, techniques as Fourier Transform Infrared Spectroscopy (FT‐IR), to characterization both the bonding agent and the thermal insulation, which suggests that it may be a future trend the use of Infrared Spectroscopy in studies about bonding agents and the polymeric matrix of the thermal insulation employed in rocket engines.

中文翻译：

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关于航空航天材料表征的简短回顾-粘合剂和隔热

本文对推进剂中使用的粘合剂类型以及在过去几十年中研究的火箭发动机中用于绝热的主要聚合物基体进行了综述。本文旨在说明粘合剂对推进剂成分和与推进剂颗粒接触的火箭发动机隔热涂层的重要性。本文还显示了许多研究人员已在不同光谱区域应用傅立叶变换红外光谱（FT-IR）技术来表征粘合剂和隔热材料，这表明使用聚苯乙烯可能是未来的趋势。红外光谱法研究了用于火箭发动机的粘合剂和隔热材料的聚合物基体。