This work describes the synthesis and the thermoanalytical characterization of guanidinium‐5‐aminotetrazolate (GA). GA is a new nitrogen‐rich energetic material. It is not mentioned in the chemical literature so far. The molecular structure of the compound has been determined by IR, 1H‐, 13C‐ and 15N‐NMR spectroscopy. The thermal properties, the decomposition pathways and its volatile products were investigated by thermal analysis and are discussed.
The mass flow characteristics of gas generators for airbag applications have to comply with a number of requirements for an optimal deployment of the airbag itself. Up to now, the mass flow was determined from pressure time histories of so‐called can tests. This procedure suffers from the missing knowledge on the temperature of the generated gas entering the can. A new test setup described in this paper could overcome this problem by providing highly time resolved information on the gas's total temperature and the mass flow of the generator. The test setup consisted of a combustion chamber with a specially designed Laval nozzle in combination with a temperature sensor of high time resolution. The results showed a high time resolved temperature signal, which was disturbed by the formation of a slag layer on the sensor. Plausibility considerations with experimentally and thermodynamically determined combustion temperatures led to satisfying results for the overall temperature as characteristic parameter of airbag inflating gases flows from pyrotechnics.
High effective Halon ®re protection systems were introduced as a technical standard during many years. Because these substances are harmful to the ozone layer, this technology was prohibited. Looking for alternatives in a ®rst step INERGEN or CO 2 pressure gas systems were applied, which show strong disadvantages with respect to extinguishing ef®ciency and toxicity. As a consequence a new gas generator concept is proposed, based on the idea to produce N 2 by a chemical reaction out of a solid gas generator. The technology enables small units of low mass with suitable escape characteristics of the gas. Within the presented work test results of a model formulation are described and discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.