丁羟推进剂结构状态与力学性能的相关性研究评述

贮存过程中的老化使丁羟复合固体推进剂的结构状态发生变化从而对其力学性能产生影响,严重影响推进剂装药的结构完整性和发动机的使用寿命.针对这一问题,国内外相关学者进行了大量的研究工作.从理论研究与实验研究两方面介绍了国内外该领域的相关研究进展,重点对研究取得的主要成果和存在的问题进行了分析评述.通过分析总结,指出了本领域未来的研究方向和研究重点,提出了具体的研究思路.分析认为,丁羟推进剂作为一种固体填料填充的高分子复合材料,其结构状态与力学性能密切相关.从推进剂的化学结构、网络结构和微观结构等方面来研究其结构状态与力学性能的相关性,对揭示固体推进剂化学-力学关联失效机理颇有裨益.

Review of Research on Correlation between Structure State and Mechanical Property for HTPB Propellant

Because of aging, the structure state and mechanical property of HTPB composite solid propellant will change during the storage. These results have bad effects on the structural integrity of propellant grain and the service life of rocket motor. In view of this problem, many scholars have developed a large number of researches. In this paper, the related research progress in this field both at home and abroad are reviewed from analyses and experiments. The achievements and problems on the research are analyzed and reviewed emphatically. Direction, key point and the way of future research in this field are pointed out. Since HTPB propellant is regarded as a high polymer filled with a kind of solid stuffing, its structure state is closely related to mechanical property. The research on the correlation of its structure state and mechanical property from the chemical structure, network structure and is microscopic structure and etc. is of great benefit to revealing failure cause of chemistry-mechanics correlation of HTPB propellants.