مطالعه پارامترهای موثر بر خواص مکانیکی پیشرانه جامد مرکب بر پایه HTPB/Al/AP
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Abstract:
The success of the composite solid propellant motor depends on the proper stress-strain behavior of the propellant grain against tensile, compression and shear stresses and intensive changes in gravity during launch. In this paper, the effect of formulation components and other parameters affecting mechanical properties (tensile strength, elongation and elastic modulus), and their effects AP/Al/HTPB based composite solid propellants have been investigated. The main objective of the paper is to obtain a comprehensive understanding of how to influence and provide a way to improve the mechanical properties of composite solid propellant Microstructure (cis, trans, vinyl), molecular weight, hydroxyl groups and HTPB pre-polymer functionality, type of curing agents, ratio of curing agents NCO value to pre-polymer and chain extender OH value (NCO / OH), use of plasticizer ,chain extender and cross-linking agent, size, shape, distribution and solid loading are one of the most important parameters affecting mechanical properties of solid propellant. Investigations showed that changes in the distribution of AP particle size, the ratio of curing agents NCO value to pre-polymer and chain extender OH value (NCO / OH), use of chain extender and cross-linking agent are the most operational parameters for upgrade the propellant mechanical properties.
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Journal title
volume 13 issue 2
pages 29- 41
publication date 2017-04
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