A high burning rate azide micro-smoke propellant and its preparation process
A technology of propellant and burning rate catalyst, which is applied in the direction of offensive equipment, explosives processing equipment, ammonium perchlorate composition, etc. To solve the problems such as high viscosity of slurry, to achieve the effect of increasing the amount of addition and burning rate catalytic efficiency, controllable production safety risks, and good flow and leveling properties
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Embodiment 1
[0059] The propellant composition is shown in Table 1:
[0060] Table 1
[0061] Raw material composition mass (g) Polyazide glycidyl ether GAP / hydroxyl-terminated oxirane-tetrahydrofuran copolyether PET 70 / 35 Nitroglycerin NG / Triethylene glycol dinitrate TEGDN 79 / 79 Octoen HMX 200 Ammonium perchlorate AP (2μm) 100 Ammonium perchlorate AP (7μm) 220 Ammonium perchlorate AP (130μm) 155 Nano burning rate catalyst (100nm) 30 flame stabilizer (Al 2 o 3 )
10 Curing agent (TDI) 13.1 Triphenylbismuth (TPB) 0.1 N-methyl-p-nitroaniline (MNA) 6 Neutral Polymer Bonding Agent (NPBA) 2.8
[0062] The preparation process of 1kg propellant is as follows:
[0063] Step 1, pre-dispersing 30g of the inert binder and 30g of the nano-burning-rate catalyst to obtain a pre-dispersed nano-burning-rate catalyst; the mass ratio of the inert binder to the nano-burning-rate catalyst is 5 / 5;
[0064] Step 2, pr...
Embodiment 2
[0073] The propellant composition is shown in Table 3:
[0074] table 3
[0075]
[0076]
[0077] The preparation process of 1kg propellant is as follows:
[0078] Step 1, carry out pre-dispersion treatment with 18g inert binder and 40g nanometer burning rate catalyst, obtain the nanometer burning rate catalyst of predispersion treatment; Inert binder and nanometer burning rate catalyst mass ratio are 3 / 6.7 (between 3 / 7~5 / 5);
[0079] Steps 2 to 4 are consistent with the corresponding steps in Example 1.
[0080] The combustion performance and process performance of the propellant are shown in Table 4 below:
[0081] Table 4
[0082]
[0083] It can be seen from Table 4 that the propellant 6.86MPa has a burning rate of 63.15mm / s, and the yield value and viscosity of its discharged slurry are 22.1Pa and 259.2Pa·s, respectively, which has good flow leveling, and with With the increase of time, the yield value and viscosity increase slightly. It shows that the az...
Embodiment 3
[0085] The propellant composition is shown in Table 5:
[0086] table 5
[0087]
[0088]
[0089] The preparation process of 1kg propellant is as follows:
[0090] Step 1, pre-dispersing 30g of the inert binder and 50g of the nano-burning-rate catalyst to obtain a pre-dispersed nano-burning-rate catalyst; the mass ratio of the inert binder to the nano-burning-rate catalyst is 3 / 5;
[0091] Steps 2 to 4 are consistent with the corresponding steps in Example 1.
[0092] The combustion performance and process performance of the propellant are shown in Table 6 below:
[0093] Table 6
[0094]
[0095] It can be seen from Table 6 that the burning rate of propellant 6.86MPa is 53.22mm / s, and the yield value and viscosity of the discharged slurry are 20.5Pa and 246.9Pa·s respectively, which has good flow leveling property, and with With the increase of time, the yield value and viscosity increase slightly. It shows that the azide micro-smoke propellant has the characte...
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