Combustion performance test method of nanometer aluminum powder

Abstract

A combustion performance test method of nanometer aluminum powder includes the following steps of mixing the nanometer aluminum powder and glycidyl azide polymer (GAP), fully stirring the nanometer aluminum powder and the glycidyl azide polymer (GAP) to form medicament slurry to be tested, pouring the medicament slurry to be tested into a thin-wall straight plastic tube with one sealed end to form a medicament tube to be tested, fixing the medicament tube to be tested on a medicament frame of a combustion chamber, binding one end, not being sealed, of the medicament tube to be tested with nichrome wire to fix the one end, not being sealed, of the medicament tube to be tested, wrapping the end surface of the end, not being sealed, of the medicament tube to be tested with ignition powder, placing the medicament frame of the combustion chamber bond with the medicament tube to be tested in the combustion chamber of an underwater acoustic emission combustor, pressing an ignition button to conduct a combustion speed test, recording a test result, exhausting air, discharging water, taking out the medicament frame of the combustion chamber, cleaning the medicament frame of the combustion chamber, repeatedly testing each identical sample for five times at a fixed temperature and a fixed pressure point, eliminating abnormal data to obtain an average value which serves as the final test result of the single-point combustion speed, and calculating the combustion pressure exponent and the combustion speed temperature sensitivity coefficient. The combustion performance test method of the nanometer aluminum powder has the advantages of being simple, easy to operate, short in testing period and free from preparing a large number of samples to be tested.

Description

technical field [0001] The invention relates to a test method related to the combustion performance of nanometer aluminum powder. Background technique [0002] With the continuous improvement of the performance requirements of weapons and equipment in modern warfare, in order to achieve the purpose of precise strike and efficient damage, higher requirements are put forward for the energy performance of the new energetic material system, and the energy of the energetic material system is increased, and the energy release rate is increased. It has become the main direction of the development of modern energetic materials. Nano aluminum powder (containing AlH 3 ) as a high-energy fuel has been widely used in modern energetic material systems. Since nano-aluminum powder emits a lot of heat when it burns, and they all have high density, adding metal powder to the propellant as a fuel additive can significantly improve energy performance and workability, and is a good choice fo...

AI Technical Summary

Problems solved by technology

[0003] At present, the most common way to obtain the combustion characteristics of a certain material in a propellant is to design a formula to prepare a propellant sample. In the process of propellant sample preparation, there are problems such as complex process and long scientific research cycle.