The invention discloses a preparation method of a subjective-objective explosive with high
crystal density. The preparation method comprises the following steps: respectively preparing a fresh
hydroxylamine solution and a CL-20 explosive solution, mixing the two solutions, oversaturating the solutions by using a recrystallization technique, driving cocrystallization of CL-20 with
hydroxylamine, thereby obtaining the subjective-objective explosive
crystal which is highly ordered in molecular accumulation, is periodically arranged and prepared through cocrystallization of CL-20 with
hydroxylamine. The invention further discloses the subjective-objective explosive with high
crystal density. The molecular ratio of the subjective-objective explosive with high
crystal density is 2:1, the hydroxylamine is embedded into unit
cell cavities of CL-20, then the
crystal density of the explosive can be up to 2.0g.cm<-1> or greater, relatively good
thermal stability can be achieved, and meanwhile stable preparation of the hydroxylamine is achieved. The subjective-objective explosive prepared by using the preparation method has the potential of increasing air release quantity, increasing the
detonation velocity and the
detonation pressure and improving comprehensive properties of explosives, and has wide application prospects in advanced weapon payloads and
rocket propellants.