High-strength hydroxyl-terminated polybutadiene propellant and preparation method thereof
A hydroxybutyl propellant and high-strength technology, which is applied in the field of high-strength hydroxybutyl propellant and its preparation, can solve the problems of poor process performance of slurry, poor adjustment of burning rate, poor pourability, etc., and achieve adjustable burning rate Wide range, improved strength, easy to adjust the effect of burning rate
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Embodiment 1
[0036] A high-strength butylated hydroxyl propellant and a preparation method thereof mainly comprise the following process steps:
[0037] Step (1), take the raw material according to the following mass percentage content:
[0038] 6.934% HTPB, 0.2% MAPO, 3.58% DOS, 5% AL, 10% RDX, 73.5% AP;
[0039] Step (2), mixing the raw materials described in step (1) uniformly at 60°C;
[0040] Step (3), weighing 0.586% IPDI and adding it to the mixture made in step (2) to continue mixing under vacuum at 60°C for 60min;
[0041] Step (4), weighing 0.2% vinylcyclohexene diepoxide and adding it to the mixture made in step (3) and continuing vacuum mixing at 60° C. for 15 minutes to make propellant slurry;
[0042] Step (5), the propellant slurry prepared in step (4) is poured into the engine casing or various molds using a vacuum pouring system, and cured in an oven at 70°C for 96 hours to obtain a high-strength butylated hydroxyl propellant.
[0043] The mechanical properties of the p...
Embodiment 2
[0047] A high-strength butylated hydroxyl propellant and a preparation method thereof mainly comprise the following process steps:
[0048] Step (1), take the raw material according to the following mass percentage content:
[0049]7.599% HTPB, 0.2% MAPO, 3.0% DOS, 18% AL, 70.5% AP;
[0050] Step (2), mixing the raw materials described in step (1) uniformly at 60°C;
[0051] Step (3), weighing 0.561% IPDI and adding it to the mixture made in step (2) to continue mixing under vacuum at 60°C for 50min;
[0052] Step (4), weighing 0.14% DMTDA and adding it to the mixture made in step (3) and continuing vacuum mixing at 60° C. for 20 minutes to make propellant slurry;
[0053] Step (5), the propellant slurry prepared in step (4) is poured into the engine casing or various molds using a vacuum pouring system, and cured in an oven at 60°C for 192 hours to obtain a high-strength butylated hydroxyl propellant.
[0054] Table 2 shows the effect of reinforcing agent addition sequence...
Embodiment 3
[0058] A high-strength butylated hydroxyl propellant and a preparation method thereof mainly comprise the following process steps:
[0059] Step (1), take the raw material according to the following mass percentage content:
[0060] 7.045% HTPB, 0.25% MAPO, 3.83% DOS, 9.6% AL, 15% RDX, 63.7% AP;
[0061] Step (2), mixing the raw materials described in step (1) uniformly at 50°C;
[0062] Step (3), weighing 0.475% TDI and adding it to the mixture prepared in step (2) to continue mixing under vacuum at 50°C for 45min;
[0063] Step (4), weighing 0.1% N,N-dihydroxyisopropylaniline and adding it to the mixture prepared in step (3), and continuing to vacuum mix at 50° C. for 10 minutes to prepare a propellant slurry;
[0064] Step (5), the propellant slurry prepared in step (4) is poured into the engine casing or various molds using a vacuum pouring system, and cured in an oven at 50°C for 168 hours to obtain a high-strength hydroxybutyl propellant.
[0065] The mechanical prope...
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