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8717175 
Journal Article 
Effects of Plasticizers, Antioxidants and Burning Rate Modifiers on Aging Performance of the HTPB/ HMDI Composite Solid Propellant 
Enew, AM; Abadir, E; Elmarsafy, S; Elsharkawy, KK 
2019 
1 
Hanneng Cailiao / Chinese Journal of Energetic Materials
ISSN: 1006-9941 
27 
1 
21-27 
English 
The effects of plasticizers, antioxidants and burning rate modifiers on the aging performance of the composite solid propellant based on hydroxyl-terminated polybutadiene(HTPB)/hexamethylene diisocyanate(HMDI)were explored by applying an accelerated aging program for 90 day at 70℃. The HTPB propellant matrix with the diisooctyl sebacate(DOS)as plasticizers and diisooctyl azelate (DOZ), antioxidants as N, N '-Diphenyl-p-phenylenediamine (AO) and 2, 2'-methylenebis (4-methyl-6-tert-butylphenol)(cyanox 2246)and burning rate modifiers as barium ferrite(BF), copper chromites(CC)and ferric oxide(FO)were varied. Results show that sample(S1)which based on DOS decreases the stress value and increases the strain value which considered to be an excellent start for aging program. Sample(S3)containing AO presents the higher resistance to oxidation showing the better performance that reflects on increasing the shelf life of the composite solid propellant motor. Sample(S5)which based on BF enhances the ballistic performance among over the other tested two samples. The accelerated aging program allowed us to estimate the motor in-service lifetime. 2019, Editorial Board of Chinese Journal of Energetic Materials. All right reserved. 
Aging program; Antioxidants; Burning rate modifiers; Plasticizers; Polybutadiene(HTPB)/hexamethylene diisocyanate(HMDI) composite solid propellant