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Radial variable density ball flat drug preparation process and combustion performance

Author: LiWenXiang
Tutor: PanRenMing
School: Nanjing University of Technology and Engineering
Course: Materials Science
Keywords: Ball flat medicine Increasing combustion Variable density Two-step process Dynamic activity
CLC: TQ562
Type: Master's thesis
Year: 2009
Downloads: 80
Quote: 1
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Abstract


Model background to the small-caliber long-barreled weapons on the basis of analysis of the propellants increasing combustion characteristics proposed within the loose outer dense , the same material , with high cumulative combustion characteristics of variable density ball flat charge structure , and focus on molding technology with this structural feature variable density ball flat drug . Dissolution - dehydration treatment preparation variable density ball flat drug \target ball flat , made drug . During the process found in the Law of the first step of the \thickness effect , dissolved cotton larger the ratio , swelling time longer , thicker shell ; consistent treatment of the finished drug , calender roll temperature of 80 ℃ -90 ℃ , both to ensure the safety , but also to ensure that the drug body structure unchanged . Closed bomb experiments show that : the multi stomatal spherical drug activity and density are closely related , the lower the density , the greater the dynamic active ; radially varying density ball flat drug shell dense core layer is a porous, spongy , makes the combustion process shows excellent incremental . Within a certain range , the thinner the shell , the core layer density is better the smaller the incremental performance ; incremental effect under different conditions and may control the density of the core layer and the thickness of the shell . The interior ballistics tests showed that : reasonable design the size and structure of the type of drug , the propellant has broad application prospects .

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CLC: > Industrial Technology > Chemical Industry > Explosives industry, match industry > Propellant
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