Patent classifications
C06B25/34
PROPELLANT COMPOSITIONS COMPRISING NITRAMINE OXIDANTS
The present invention relates to a high energy-containing propellant composition and a use thereof. The propellant composition of the present invention is a propellant composition for guns, including: (a) 55 to 85 wt % of a nitrocellulose binder; (b) 10 to 35 wt % of a nitramine oxidant; (c) 1 to 4 wt % of a plasticizer having both a nitrate group and a nitramine group; and (d) 0.5 to 3 wt % of a stabilizer. The propellant composition of the present invention significantly improves a physical compatibility between the nitrocellulose binder and the oxidant using a plasticizer containing both a nitrate group and a nitramine group, leading to stable interior ballistics characteristics from low temperature to high temperature as well as improvement on the characteristics of an extrudate. Accordingly, the propellant composition of the present invention may be effectively applied to an ammunition for guns due to an excellent physical property and interior ballistic stability thereof.
PROPELLANT COMPOSITIONS COMPRISING NITRAMINE OXIDANTS
The present invention relates to a high energy-containing propellant composition and a use thereof. The propellant composition of the present invention is a propellant composition for guns, including: (a) 55 to 85 wt % of a nitrocellulose binder; (b) 10 to 35 wt % of a nitramine oxidant; (c) 1 to 4 wt % of a plasticizer having both a nitrate group and a nitramine group; and (d) 0.5 to 3 wt % of a stabilizer. The propellant composition of the present invention significantly improves a physical compatibility between the nitrocellulose binder and the oxidant using a plasticizer containing both a nitrate group and a nitramine group, leading to stable interior ballistics characteristics from low temperature to high temperature as well as improvement on the characteristics of an extrudate. Accordingly, the propellant composition of the present invention may be effectively applied to an ammunition for guns due to an excellent physical property and interior ballistic stability thereof.
A COMPOSITE PYROTECHNIC PRODUCT WITH ADN AND RDX CHARGES IN A GAP TYPE BINDER, AND PREPARATION THEREOF
A composite pyrotechnic product containing energetic charges in a plasticized binder includes a cured energetic polymer and at least one energetic plasticizer, wherein: the cured energetic polymer consists of a glycidyl azide polymer (GAP) having a number average molecular weight (Mn) lying in the range 700 g/mol to 3000 g/mol and cured via its hydroxyl terminal functions with at least one curing agent of polyisocyanate type; and the energetic charges present at a content in the range 50% to 70% by weight consisting, for at least 95% of their weight, of large crystals of ammonium dinitramide (ADN) and of small crystals of hexogen (RDX): the large crystals of ammonium dinitramide (ADN) being present at a content in the range 8% to 65% by weight; and the small crystals of hexogen (RDX) being present at a content in the range 5% to 55% by weight.
A COMPOSITE PYROTECHNIC PRODUCT WITH ADN AND RDX CHARGES IN A GAP TYPE BINDER, AND PREPARATION THEREOF
A composite pyrotechnic product containing energetic charges in a plasticized binder includes a cured energetic polymer and at least one energetic plasticizer, wherein: the cured energetic polymer consists of a glycidyl azide polymer (GAP) having a number average molecular weight (Mn) lying in the range 700 g/mol to 3000 g/mol and cured via its hydroxyl terminal functions with at least one curing agent of polyisocyanate type; and the energetic charges present at a content in the range 50% to 70% by weight consisting, for at least 95% of their weight, of large crystals of ammonium dinitramide (ADN) and of small crystals of hexogen (RDX): the large crystals of ammonium dinitramide (ADN) being present at a content in the range 8% to 65% by weight; and the small crystals of hexogen (RDX) being present at a content in the range 5% to 55% by weight.
Compound and preparation and application thereof
The present invention discloses a compound, which comprises the structure shown in FIG. 1; and further discloses a preparation method thereof, a precursor material used in the preparation method, explosives comprising the compound, and the application thereof in the field of explosives, in particular in the application of green environmentally-friendly primers. The compound disclosed by the invention may provide green environmental protection type primer, and meets the problem of requiring green environmental protection primers in many fields such as military industry, firework and civil explosion engineering. The compound disclosed in the invention has a simple preparation method and may be prepared by simple reaction steps and conditions, which has the advantages of being green and reliable as no pollution during the reaction process and use, no metal required in the compound structure, with good stability, high impact sensitivity, friction sensitivity, and initiation capability, and appropriate minimum initiating charge.
Compound and preparation and application thereof
The present invention discloses a compound, which comprises the structure shown in FIG. 1; and further discloses a preparation method thereof, a precursor material used in the preparation method, explosives comprising the compound, and the application thereof in the field of explosives, in particular in the application of green environmentally-friendly primers. The compound disclosed by the invention may provide green environmental protection type primer, and meets the problem of requiring green environmental protection primers in many fields such as military industry, firework and civil explosion engineering. The compound disclosed in the invention has a simple preparation method and may be prepared by simple reaction steps and conditions, which has the advantages of being green and reliable as no pollution during the reaction process and use, no metal required in the compound structure, with good stability, high impact sensitivity, friction sensitivity, and initiation capability, and appropriate minimum initiating charge.
Controlled autoignition propellant systems
Solid propellant systems include a main propellant and a secondary propellant in contact with the first propellant that exhibits autoignition temperatures of at least about 100° F. lower than the autoignition temperature of the main propellant. The secondary propellant of the present invention is most advantageously employed with conventional AP-containing solid propellant formulations as the main propellant, especially formulations containing both AP, an energetic solid, and a binder. In especially preferred forms, the secondary propellant will include a nitramine which is at least one selected from nitroguanidine (NQ), cyclotrimethylene trinitramine (RDX) and cyclotetramethylenetetranitramine (HMX), and a binder which is at least one selected from HTPB, HTPE or glycidyl azide polymer (GAP). Most preferably, the secondary propellant will include a combination of nitramines which includes NQ and one of RDX or HMX.
FUNCTIONAL GROUP-PROTECTED DIAZIDOGLYOXIME, METHOD OF SYNTHESIZING THE SAME, AND METHOD OF SYNTHESIZING TKX-50 USING FUNCTIONAL GROUP-PROTECTED DIAZIDOGLYOXIME
The present invention relates to functional group-protected diazidoglyoxime (DAG), a method of synthesizing the same, and a method of synthesizing TKX-50 using functional group-protected DAG. Insensitive-DAG with enhanced insensitivity, instead of sensitive DAG, may be synthesized to reduce risks of processes and harmfulness arising from threats of explosion and fire accidents caused by impact, friction and static electricity, and thus it is possible to stably synthesize functional group-protected DAG.
FUNCTIONAL GROUP-PROTECTED DIAZIDOGLYOXIME, METHOD OF SYNTHESIZING THE SAME, AND METHOD OF SYNTHESIZING TKX-50 USING FUNCTIONAL GROUP-PROTECTED DIAZIDOGLYOXIME
The present invention relates to functional group-protected diazidoglyoxime (DAG), a method of synthesizing the same, and a method of synthesizing TKX-50 using functional group-protected DAG. Insensitive-DAG with enhanced insensitivity, instead of sensitive DAG, may be synthesized to reduce risks of processes and harmfulness arising from threats of explosion and fire accidents caused by impact, friction and static electricity, and thus it is possible to stably synthesize functional group-protected DAG.
POLYMERISABLE BINDER
The invention relates to Polymerisable Binders, and Insensitive Munition (IM) energetic materials particularly to non-phthalate IM propellant compositions which are printed by a UV curing additive layer manufacture process. invention there is provided an additive layer deposable energetic composition suitable for use as a propellant comprising the following components in the following relative proportions: component A; from 60% to 95% by weight of a highly energetic filler comprising at least one nitramine compound; and component B: from 5% to 20% by weight of a binder, wherein the binder contains component D a UV curable binder in the range of from 3% to 12% by total weight of the formulation, at least one UV photoinitiator, component C: from 1% to 15% of a plasticiser, the percentages by weight of components A, B, D and C, together with minor additives, if any, adding to 100%.