NDLI: Properties and application of a novel type of glycidyl azide polymer modified double-base spherical powders

Content Provider	Springer Nature Link
Author	Wu, Yanguang Ge, Zhen Luo, Yunjun
Copyright Year	2015
Abstract	GAP modified double-base powder was prepared by an internal solution method and applied in cross-linked modified double-base propellants. It was found that if GAP content was not more than 30 %, the modified double-base powders had high roundness rate, no bonding between the particles and excellent fluidity. The median diameter (d $_{50}$) of powders was decreased from 90.24 to 72.41 μm when the amount of GAP increased from 0.0 to 30.0 %. The thermal decomposition peak temperatures of –N$_{3}$ and GAP’s main chain were found to be lower for the 10.0, 20.0 and 30.0 % GAP modified powders than the corresponding peak temperatures for pure GAP. The drop mass impact sensitivity of the modified powders is reduced as the mass ratio of GAP increases. It was experimentally shown that GAP modified double-base powders can improve the mechanical characteristics of the propellant with a maximum tensile strength (σ $_{m}$) between 0.45 MPa < σ $_{m}$ < 1.18 MPa and an elongation at maximum tensile strength (ε $_{m}$) between 29.80 % < ε $_{m}$ < 52.60 % at temperatures of −40, +20 and +50 °C.
Starting Page	107
Ending Page	115
Page Count	9
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	124
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-11-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Glycidyl azide polymer (GAP) GAP modified double-base powders Particle size distribution Thermal decomposition Mechanical properties Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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