1,8-dihydroxy anthraquinone lead compound, as well as preparation method and application thereof

The invention discloses a 1,8-dihydroxy anthraquinone lead compound which is shown as the structural formula (I). The 1,8-dihydroxy anthraquinone lead compound can be used as a combustion catalyst, has a good catalytic effect on a biradical solid propellant or a modified biradical solid propellant, and can significantly increase the burning rate of the biradical solid propellant or the modified biradical solid propellant and reduce the pressure index.

Preparation method of super-thermite Al/PbO nano-composite energetic material

The invention discloses a super-thermite Al/PbO nano-composite energetic material and a preparation method thereof. The super-thermite Al/PbO nano-composite energetic material consists of nano-grade aluminum powder and PbO, wherein the molar ratio of aluminum powder to PbO is (1:3)-(1:1), the grain diameter of aluminum powder is 20-100nm, and the grain diameter of obtained nano-composite energetic material is 50nm-150nm. The method comprises the following steps: respectively dissolving organic or inorganic lead salt and organic or inorganic base in alcoholic solution; dissolving completely, mixing the alcoholic solution of the lead salt and the base to generate lacte sol; and finally adding nano aluminum powder, completely mixing, filtering, washing and drying. The method has simple process, convenient operation and high safety performance and is easy to control, and the obtained nano-composite energetic material Al/PbO has excellent catalytic effect on the combustion of a double-base solid ...

Multi-target-line dynamic combustion performance testing system for solid propellant

Method for coating nitroamine explosives by adopting atomic layer deposition technique

The invention belongs to the field of energetic materials, and discloses a method for coating nitroamine explosives by adopting an atomic layer deposition technique. In the method, two reaction precursors alternatively pass through a reaction cavity, and chemical reaction occurs on the surfaces of nitroamine explosive particles to form coating films. The coating film completely and uniformly covers the whole outer surface of each nitroamine explosive particle, and the thickness of the coating film can be precisely adjusted within a nanoscale range. The method is suitable for coating nitroamine explosive particles in micron order, nanometer order or millimeter order. When the thickness of the coating film is controlled to be within the nanoscale range, the content of the coating films only accounts for 0.1 percent to 5 percent of the total mass of the system, and therefore, the coating films have little influence on the nitroamine explosives. The electrostatic spark sensitivity of the nitroamine ...

Combustion speed testing method for gel propellant

The invention discloses a combustion performance testing method for a gel propellant. The method comprises the following steps: directly taking a prepared gel propellant as a sample to be tested and injecting the sample into a thin-wall straight plastic pipe of which the inner diameter is 8mm-10mm and one end is closed to prepare a powder pipe to be detected; fixing the powder pipe to be detected on a powder rack of a combustion room; placing ignition powder on one unclosed end and fixing by using a nickel-chrome wire; coating an end face by using a coating agent; and putting the powder rack of the combustion room, which carries the fixed powder pipe to be detected, into an underwater acoustic emission combustion speed meter to test a combustion speed and finally calculating an average combustion speed, a combustion speed pressure index and a combustion speed temperature sensitivity coefficient. The method is simple and easy to operate and short in testing period, and can rapidly and accurately ...

Multi-target-line dynamic combustion performance testing system for solid propellant

The invention discloses a multi-target-line dynamic combustion performance testing system for a solid propellant, which comprises a combustion chamber and gas distribution unit, a test and control unit and a data collecting and processing unit, wherein the combustion chamber and gas distribution unit comprises a combustion chamber, a constant-temperature tank, a high-pressure nitrogen cylinder, a buffer nitrogen cylinder, a relevant valve pipeline, a nitrogen booster pump and a multi-target-line explosive support used for fixing a sample to be tested, wherein one end of the multi-target-line explosive support is provided with an ignition wire connecting post, a ground wire connecting post and 6 to 10 target line connecting posts in the combustion chamber; and the data collecting and processing unit is used for dispatch and control of all function blocks of the testing and controlling unit, analysis and processing of tested data and data management. The testing system can reflect the change ...

Solid-propellant ignition and burning speed integrated testing device

The invention discloses a solid-propellant ignition and burning speed integrated testing device and belongs to the field of solid propellant performance testing. The device comprises a burning chamber and gas distribution unit, a laser emitting and optical signal receiving unit and a measuring unit. The burning chamber and gas distribution unit comprises a burning chamber, a semiconductor temperature control device, a sample support and the like. The laser emitting and optical signal receiving unit comprises a CO2 laser device, a laser optical path energy optimizing system, a total reflection prism and an optoelectric detector. The measuring unit comprises a signal amplifier, a synchronous data collecting card, an ignition signal synchronizer, an I/O control card, a computer, a temperature sensor, a pressure sensor and measuring software. The testing device can test the burning laser ignition performance and the burning performance of solid propellant at the same time in a test. An existing ...

Zirconium lead tartrate double metal salt, preparation method and application thereof

The invention discloses a zirconium lead tartrate double metal salt comprising ZrPb2(C4H2O6).2nH2O, wherein the C4H2O6 is a tartaric acid negative ion; and n is coordinated water and/or the number of crystal water in the zirconium lead tartrate double metal salt, and n is equal to 0 to 2. The preparation method of the zirconium lead tartrate double metal salt comprises the following steps: (1) reacting tartaric acid and soluble lead salt to obtain lead tartrate; (2) adding an alkali solution into the lead tartrate, and filtering the mixture; and (3) dissolving soluble zirconium salt into water, and adding the filtrate obtained in the step (2) to obtain zirconium lead tartrate. The zirconium lead tartrate double metal salt can be used as a combustion catalyst of a solid propellant, an unstable combustion inhibitor and a difunctional ballistic modifier.

Method for testing stress-strain of composite propellant under condition of intermediate strain rate

The invention discloses a method for testing stress-strain of composite propellant under the condition of an intermediate strain rate. The method comprises the following steps: fixing the loading speed of an actuator based on a high-speed hydraulic servo test system so as to ensure the intermediate strain rate needed by a sample; buffering the actuator and the sample by an interval of 3mm so as to reach a stable rate needed during loading; and compressing and deforming a cylindrical (Phi20*20mm) propellant sample at a certain loading speed, testing to obtain data of time, pressure and displacement of the sample and mathematically processing the data to obtain a stress-strain relation curve under the condition of the strain rate. The method is simple in step, reasonable in design, convenient to operate and good in use effect; the stress-strain testing problem of a composite solid propellant under the condition of the intermediate strain rate is effectively solved; the loading cost and the ...

1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound and preparation method and application of copper compound

The invention discloses a 1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound. A preparation method of the 1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound comprises the following step: carrying out double-decomposition reaction on 1,8-dyhydroxy-4,5-dinitroanthraquinone as a raw material, and bivalent copper salts to prepare the 1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound, wherein the structural formula of the 1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound is as shown in the specification. The 1,8-dyhydroxy-4,5-dinitroanthraquinone copper compound is mainly applied to a double-base solid propellant as a green combustion catalyst.

Zirconium lead tartrate double metal salt, preparation method and application thereof

The invention discloses a zirconium lead tartrate double metal salt comprising ZrPb2(C4H2O6).2nH2O, wherein the C4H2O6 is a tartaric acid negative ion; and n is coordinated water and/or the number of crystal water in the zirconium lead tartrate double metal salt, and n is equal to 0 to 2. The preparation method of the zirconium lead tartrate double metal salt comprises the following steps: (1) reacting tartaric acid and soluble lead salt to obtain lead tartrate; (2) adding an alkali solution into the lead tartrate, and filtering the mixture; and (3) dissolving soluble zirconium salt into water, and adding the filtrate obtained in the step (2) to obtain zirconium lead tartrate. The zirconium lead tartrate double metal salt can be used as a combustion catalyst of a solid propellant, an unstable combustion inhibitor and a difunctional ballistic modifier.

Dust suppression device for building construction

The invention relates to a dust suppression device for building construction, which comprises a water tank, a workbench and a fog cylinder, a moving assembly is assembled at the lower end of the water tank, the workbench is fixedly assembled at the upper end of the water tank, the fog cylinder is assembled at the upper end of the workbench, a rotating table is assembled at the lower end of the fog cylinder, the rotating table is rotatably arranged on the workbench, and a rotating assembly is arranged between the workbench and the rotating table. A water supply mechanism is assembled in the rotating table, the mist barrel is provided with a dust falling mechanism, the dust falling mechanism comprises a draught fan, a supporting frame, a plurality of hinged plates and a dust falling assembly, the dust falling assembly comprises an annular water bag, and the water supply mechanism comprises a water pump, a straight pipe, a water supply pipe and a water return pipe. Wherein a plurality of hinge ...

Cash -counting hand -wetting finger ring for accountant

The utility model relates to an accounting articles for use, especially a cash -counting hand -wetting finger ring for accountant, including ring body, liquid storage pot, one -way water mechanism, the liquid storage pot is hollow fillet cube and the liquid storage pot material adopts the software plastic, and damage accountant hand skin is avoided scraping in its effect, liquid storage pot top center is equipped with the through -hole and this through -hole inner wall is equipped with the screw thread, one -way the fungi -proofing cotton that water mechanism includes the nozzle stub, installs terminal surface on the nozzle stub, the screw thread of nozzle stub outer peripheral face cooperation liquid storage pot top through -hole inner wall is equipped with screw thread portion, the nozzle stub inner wall is equipped with left semicircle ring sum right side semicircle ring, left semicircle ring sum right side semicircle ring juncture formation through -hole structure, right side semicircle ...

1,8-dihydroxy anthraquinone copper compound and preparation method and application thereof

The invention discloses a 1,8-dihydroxy anthraquinone copper compound as shown in a structural formula (I). The 1,8-dihydroxy anthraquinone copper compound disclosed by the invention has excellent catalysis effect on a modified biradical solid propellant as a combustion catalyst and can outstandingly increase the combustion speed of the modified biradical solid propellant and reduce the pressure index.

Al/polyborane energetic composite material, preparation method and application

The invention discloses an Al/polyborane energetic composite material as well as a preparation method and application thereof. The composite material comprises an inner core and a polyborane shell layer wrapping the inner core from inside to outside, the inner core is an Al core, and the shell layer is a compound of NH4B12H12 and Et2B12H12; the multi-borane compound is a compound containing multi-borane anions, the multi-borane ionic compound with specific composition has the characteristics of easiness in ignition and combustion and more produced gas, the heat value of the aluminum powder can be further improved by using the multi-borane compound, and the gas generated in the hydrogen release process can inhibit the agglomeration effect among aluminum particles, so that the heat value of the aluminum powder is further improved. And the preparation process of the composite material is carried out at normal temperature, and the preparation method is safe, reliable, mature and suitable for ...

Preparation method of glycidyl azide polymer modified micro-nano zirconium composite particles

The invention provides a preparation method of glycidyl azide polymer modified micro-nano zirconium composite particles. The preparation method comprises the following steps: (1) pretreatment of zirconium powder; and (2) preparation of the zirconium composite particles. According to the preparation method, the electrostatic spark sensitivity of the prepared zirconium composite particles is obviously reduced relative to the uncoated zirconium powder, so that the safety performance of the zirconium powder is improved to a great extent; the selected coating material glycidyl azide polymer which is used as an energetic adhesive is capable of providing energy during the combustion and has favorable consistency with the components of propellants, so that the practical application of the zirconium powder as a composite propellant fuel to ramjets and volume-limited solid rocket engines is promoted.