关键词: 固体推进剂;固化剂;力学性能;因素分析;灰色关联度法

Abstract: To determinate the polyisocyanate specification, the grey relation degree(GRD) method was used to analyze the effect of polyisocyanate specification on propellant mechanical properties. The results show that: (1)The contents of multi functionalities of polyisocyanate are the key factors that influence its viscosity. And the content of difunctionality of polyisocyanate is the main factor that influences its average functionality, (2) The content of difunctionality of polyisocyanate is the most importanat factor that influences the propellant strength. The viscosity and the content of trifunctionality of polyisocyanate are the key factors that influence the propellant elongation. The GRD method can be used to analyze the primary and secondary factors that influence the experiment results which cannot be analyzed by establishing explicit regression model.

Key words: Solid propellant;Curing agent;Mechanical properties;Factors analysis Grey relation degree method