Research on the Flame Retardant Effect of Super-porous Nitroguanidine Propellant Coated with Different Coating Contents of TiO2

2018 3rd International Conference on Advanced Materials Research and Manufacturing Technologies

材料科学;机械制造

Lina, Zhang^1 ; Fengqiang, Nan^1 ; Wanwu, Shen^1

Nanjing University of Science and Technology, Nanjing

210094, China^1

关键词: Closed bomb test;    Coating layer;    Constant-volume combustions;    Different proportions;    Loading density;    Maximum pressure;    Nitroguanidine;    Titanium dioxides (TiO2);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/436/1/012011/pdf
DOI  :  10.1088/1757-899X/436/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The flame-retardant effect of coating liquid with different titanium dioxide (TiO2) content on the coating of super-porous nitroguanidine propellants is studied by closed bomb tests and X-Ray Diffraction (XRD) tests. Using three different proportions of insensitive coating liquid to make a single-hole propellant. Taking single hole propellant 20g respectively for constant volume combustion test, and analyses the p-t, u-p curve. Then, select 30% and 35% of TiO2 coating propellant and uncoated propellant to do constant volume combustion experiments, and to analyze the p-t curves. By analyzing the results of experiments,we draw the following two conclusions: (i) When the content of TiO2 in the coating liquid of the single hole propellant is 35%, at the same loading density, the maximum pressure reached is the minimum and the time required is the longest. (ii) As the content of TiO2 in the coating layer increases, the insensitivity effect of the coating layer become more obvious, and the increasing explosiveness of the propellant will increase.