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High-temperature-resistant type solid propellant with calcium carbonate as cooling agent and preparation method of high-temperature-resistant type solid propellant

A solid propellant, high-temperature-resistant technology, which is used in attack equipment, compressed gas generation, etc., can solve problems such as inability to meet requirements, and achieve the effect of less formula components, simple and easy process, and good compatibility.

Inactive Publication Date: 2016-02-10
HUBEI SANWO LIYUAN AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, nitrocellulose is mostly used in single-base and double-base propellants. However, due to the restriction of the performance of nitrocellulose itself, the long-term temperature resistance limit of the fracturing agent mainly composed of nitrocellulose is 135°C, which is far from meeting the needs of most oil wells. (The well temperature is between 120°C and 160°C)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Composition of solid propellant:

[0059] Formula composition content(%) HTPB 8 AP 35 CaCO 3 50 DOS 3.9 n-octyl ferrocene 2.0 TDI 1 C 0.1

[0060] (2) Solid propellant properties:

[0061] Density, g / cm 3 1.65 Characteristic velocity, m / s 1246 Gas average molecular weight, g / mol 20.2 Gas output, l / kg 1109 Burning speed (7MPa), mm / s 4.81 pressure index 0.38 Combustion temperature, ℃ 1460 Residue, % ＜15 Syrup Trial Period >5 hours High temperature resistance Refer to WJ9016-94 to judge heat resistance and stability performance, (Φ20mm×20mm grain) 163±2°C, 48h, non-flammable, non-explosive and non-deformable

Embodiment 2

[0063] (1) Composition of solid propellant

[0064] Formula composition content(%) PET 30 AP 45 CaCO 3 15 ATC 4.9 Katosin 2.0 IPDI 3 C 0.1

[0065] (2) Solid propellant performance

[0066] Density, g / cm 3 1.58 Characteristic velocity, m / s 1214 Gas average molecular weight, g / mol 20.1 Gas output, l / kg 1114 Burning speed (7MPa), mm / s 18.6 pressure index 0.35 Combustion temperature, ℃ 1240 Residue, % ＜10 Syrup Trial Period >5 hours High temperature resistance Refer to WJ9016-94 to judge heat resistance and stability performance, (Φ20mm×20mm grain) 163±2°C, 48h, non-flammable, non-explosive and non-deformable

Embodiment 3

[0068] (1) Composition of solid propellant

[0069] Formula composition content(%) CTPB 14.58 AP 65 CaCO 3 15 DOS 2.7 CC and ferric oxide 1.42 Tris-(2-methylaziridine)phosphine oxide (MAPO) 1.2 C 0.1

[0070] (2) Solid propellant performance

[0071] Density, g / cm 3 1.62 Characteristic velocity, m / s 1102 Gas average molecular weight, g / mol 19.8 Gas output, l / kg 1131 Burning speed (7MPa), mm / s 20.28 pressure index 0.38 Combustion temperature, ℃ 1442 Residue, % ＜15 Syrup Trial Period >5 hours High temperature resistance Refer to WJ9016-94 to judge heat resistance and stability performance, (Φ20mm×20mm grain) 163±2°C, 48h, non-flammable, non-explosive and non-deformable

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Abstract

A high-temperature-resistant type solid propellant with calcium carbonate as the cooling agent and a preparation method of the high-temperature-resistant type solid propellant are used for gas generators, other gas generators and oil field fractures. The high-temperature-resistant type solid propellant is prepared from 8-30% of adhesives, 0-10% of plasticizer, 1-14.1% of curing agents, 25-90% of oxidizing agents, 0-50% of calcium carbonate, 0-2% of additives and 0-5% of combustion regulators. The high-temperature-resistant type solid propellant is high in heat-resistant performance, can not be combusted or exploded after being placed at the temperature of 163 DEG C within 48 h due to the high-temperature-resistant performance, and can meet the use requirements of deep well oil fields; the high-temperature-resistant type solid propellant is few in formula component, simple and feasible in process, stable in production process, reliable in quality, high in formula component compatibility and capable of ensuring that no chemical reactions are generated when stored for a long time and stored at high temperature and high pressure; raw materials are wide in source, the price is low, and the production cost is low; the combustion temperature is low, and the gas yield is high.

Description

technical field [0001] The invention relates to the technical field of solid propellants, in particular to a high-temperature-resistant solid propellant formula and a preparation method thereof which use calcium carbonate as a cooling agent for gas generators and other gas generators and oil field fracturing. Background technique [0002] In the 1960s, the development of composite solid propellant cooling agents has been carried out abroad. The developed cooling agents mainly include oxamide (OAM), ammonium oxalate (AO), dihydroxyglyoxime (DHG), oxalodihydrazine (ODH) etc. Since the decomposition temperatures of OAM, AO and ODH are relatively low, the initial decomposition temperature of the prepared propellant is below 160°C, and the high temperature resistance is poor, which cannot meet the requirements of high temperature use. [0003] In the field of oilfield fracturing technology, domestic fracturing propellants are mainly single-base, double-base propellants and compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/00
Inventor 乔应克王文博占明明胡肖华邢瑞英常征李志勇孙兰兰张小龙林蔚方永红
Owner HUBEI SANWO LIYUAN AEROSPACE SCI & TECH
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