4-nitro-2',4'-dyhydroxyl benzophenone energy-containing compound and preparation method thereof

Abstract

The invention discloses a 4-nitro-2',4'-dyhydroxyl benzophenone energy-containing compound and a preparation method thereof. The composition of the compound is M(C13H8NO5)n.mH2O, wherein M is a bivalent transition metal ion or a trivalent rare earth ion; C13H8NO5 is an anion of 4-nitro-2',4'-dyhydroxyl benzophenone; n is an integral number of 2 or 3; and m is an integral number of 0-2 or a decimal. The preparation method of the energy-containing compound comprises the following processes of: dissolving the 4-nitro-2',4'-dyhydroxyl benzophenone into a sodium hydroxide solution to prepare a solution; adding a soluble transition metal salt or a rare earth salt solution and uniformly mixing; stirring, heating for refluxing; standing still, washing and filtering, and the like to prepare a product. The 4-nitro-2',4'-dyhydroxyl benzophenone energy-containing compound used as a combustion catalyst has good catalysis effect on the combustion of a biradical or modified biradical propellant and is a high-efficiency combustion catalyst.

Description

technical field

[0001] The invention relates to an energetic complex of 4-nitro-2', 4'-dihydroxybenzophenone and a preparation method thereof. The energetic complex can be used as a combustion catalyst of a double-base propellant. technical background

[0002] Double-base propellants and modified double-base propellants are a class of high-energy fuels used in rockets and missiles. The disadvantages of double-base propellants are low burning rate and high pressure index, and it is necessary to add a combustion catalyst to adjust the combustion performance. Combustion catalysts commonly used in double-base propellants are mainly lead compounds. The addition of lead compounds can not only increase the burning rate of the propellant and reduce the pressure index, but also produce "platform" or "Mesa" combustion characteristics. Research has found that the catalytic effect of organic lead salts and lead organic complexes is far better than that of lead oxides, especially the ca...

Examples

Embodiment 1

[0029] (1) Take 5.2g 4-nitro-2', 4'-dihydroxybenzophenone is fully dissolved with NaOH solution to form a clear solution, adjust the pH of the solution to be 9; weigh 3.3g Pb(NO 3 ) 2 Dissolve it with deionized water to form a solution, add it to the 4-nitro-2',4'-dihydroxybenzophenone solution, stir and mix evenly;

[0030] (2) Stir and react at a constant temperature of 70°C for 1 hour, then cool and stand;

[0031] (3) The precipitate was washed with deionized water several times, filtered, and dried to obtain 4-nitro-2', 4'-dihydroxybenzophenone lead (II) complex, and the product yield was 80.2%.

[0032] The C and H contents of 4-nitro-2',4'-dihydroxybenzophenone lead (II) complex were analyzed by elemental analyzer, and Pb was determined by EDTA volumetric method. Pb(C 13 h 8 o 5 N) 2 ·H 2 Theoretical calculation of elemental analysis of O: C41.84, H 2.17, N 3.78, Pb 27.94; experimental determination: C 41.22, H 2.26, N 3.61, Pb 28.37, thus the simplified chemical...

Embodiment 2

[0035] (1) Take 5.2g 4-nitro-2', 4'-dihydroxybenzophenone is fully dissolved with NaOH solution to form a clear solution, adjust the pH value of the solution to 9.2; weigh 1.8g Cu(NO 3 ) 2 ·3H 2 O is dissolved in deionized water, added to 4-nitro-2', 4'-dihydroxybenzophenone solution, stirred and mixed evenly;

[0036] (2) Stir and react at 90°C for 1.5 hours, then cool and let stand;

[0037] (3) The precipitate was washed with deionized water several times, filtered, and dried to obtain 4-nitro-2',4'-dihydroxybenzophenone copper (II) complex, and the product yield was 62.3%.

[0038] The C and H contents of 4-nitro-2',4'-dihydroxybenzophenone copper (II) complex were analyzed by elemental analyzer, and Cu was determined by EDTA volumetric method. Cu(C 13 h 8 o 5 N) 2 ·H 2 Theoretical calculation of elemental analysis of O: C51.89, H 2.70, N4.69, Cu 10.63; experimental determination: C 51.28, H 2.58, N 4.52, Cu 10.95, thus the simplified chemical formula of the complex ...

Embodiment 3

[0042] 4-nitro-2', the basic formulation of the double base propellant used in the catalytic performance experiment of the energetic complex of 4'-dihydroxybenzophenone is: nitrocellulose (NC, 12.0%N) 59%, Nitroglycerin (NG), 30%, diethyl phthalate (DEP) 8.5%, other additives 2.5%. The drug material is dosed by 500g, and the combustion catalyst 4-nitro-2', 4'-dihydroxybenzophenone lead (II) complex is an additional amount, and the addition amount is 2.5%; the blank propellant sample of the control group does not contain combustion catalyst.

[0043] The propellant sample is prepared by the conventional solvent-free compression molding process of absorption-water displacement-release-cooking-calendering-cutting into drug strips. The burning rate of the sample was measured by the target line method. The side of the treated Ф5×150mm grain column was dipped and coated with polyvinyl alcohol solution for 6 times and dried in the air, and then the burning rate test was carried out...

technical field

[0001] The invention relates to an energetic complex of 4-nitro-2', 4'-dihydroxybenzophenone and a preparation method thereof. The energetic complex can be used as a combustion catalyst of a double-base propellant. technical background

[0002] Double-base propellants and modified double-base propellants are a class of high-energy fuels used in rockets and missiles. The disadvantages of double-base propellants are low burning rate and high pressure index, and it is necessary to add a combustion catalyst to adjust the combustion performance. Combustion catalysts commonly used in double-base propellants are mainly lead compounds. The addition of lead compounds can not only increase the burning rate of the propellant and reduce the pressure index, but also produce "platform" or "Mesa" combustion characteristics. Research has found that the catalytic effect of organic lead salts and lead organic complexes is far better than that of lead oxides, especially the ca...

Examples

Embodiment 1

[0029] (1) Take 5.2g 4-nitro-2', 4'-dihydroxybenzophenone is fully dissolved with NaOH solution to form a clear solution, adjust the pH of the solution to be 9; weigh 3.3g Pb(NO 3 ) 2 Dissolve it with deionized water to form a solution, add it to the 4-nitro-2',4'-dihydroxybenzophenone solution, stir and mix evenly;

[0030] (2) Stir and react at a constant temperature of 70°C for 1 hour, then cool and stand;

[0031] (3) The precipitate was washed with deionized water several times, filtered, and dried to obtain 4-nitro-2', 4'-dihydroxybenzophenone lead (II) complex, and the product yield was 80.2%.

[0032] The C and H contents of 4-nitro-2',4'-dihydroxybenzophenone lead (II) complex were analyzed by elemental analyzer, and Pb was determined by EDTA volumetric method. Pb(C 13 h 8 o 5 N) 2 ·H 2 Theoretical calculation of elemental analysis of O: C41.84, H 2.17, N 3.78, Pb 27.94; experimental determination: C 41.22, H 2.26, N 3.61, Pb 28.37, thus the simplified chemical...

Embodiment 2

[0035] (1) Take 5.2g 4-nitro-2', 4'-dihydroxybenzophenone is fully dissolved with NaOH solution to form a clear solution, adjust the pH value of the solution to 9.2; weigh 1.8g Cu(NO 3 ) 2 ·3H 2 O is dissolved in deionized water, added to 4-nitro-2', 4'-dihydroxybenzophenone solution, stirred and mixed evenly;

[0036] (2) Stir and react at 90°C for 1.5 hours, then cool and let stand;

[0037] (3) The precipitate was washed with deionized water several times, filtered, and dried to obtain 4-nitro-2',4'-dihydroxybenzophenone copper (II) complex, and the product yield was 62.3%.

[0038] The C and H contents of 4-nitro-2',4'-dihydroxybenzophenone copper (II) complex were analyzed by elemental analyzer, and Cu was determined by EDTA volumetric method. Cu(C 13 h 8 o 5 N) 2 ·H 2 Theoretical calculation of elemental analysis of O: C51.89, H 2.70, N4.69, Cu 10.63; experimental determination: C 51.28, H 2.58, N 4.52, Cu 10.95, thus the simplified chemical formula of the complex ...

Embodiment 3

[0042] 4-nitro-2', the basic formulation of the double base propellant used in the catalytic performance experiment of the energetic complex of 4'-dihydroxybenzophenone is: nitrocellulose (NC, 12.0%N) 59%, Nitroglycerin (NG), 30%, diethyl phthalate (DEP) 8.5%, other additives 2.5%. The drug material is dosed by 500g, and the combustion catalyst 4-nitro-2', 4'-dihydroxybenzophenone lead (II) complex is an additional amount, and the addition amount is 2.5%; the blank propellant sample of the control group does not contain combustion catalyst.

[0043] The propellant sample is prepared by the conventional solvent-free compression molding process of absorption-water displacement-release-cooking-calendering-cutting into drug strips. The burning rate of the sample was measured by the target line method. The side of the treated Ф5×150mm grain column was dipped and coated with polyvinyl alcohol solution for 6 times and dried in the air, and then the burning rate test was carried out...

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