Burning rate complex materials

A burning rate of common materials and products in fire can only be specifically and accurately established through measurement. Estimates from various sources are listed in Table 9.4. Also, oxygen consumption calorimeters are used to measure the energy release rate of complex fuel packages directly. In most cases, the results are a combination of effects ignition, spread and burning rate. 

Propagation across solid fuel surfaces is a much more complex problem because the orientation of the solid surface can be varied. For example, a sheet of plastic or wood held in a vertical position and ignited at either the top or bottom edge shows vastly different propagation rate because of gravity effects. Even material held at an angle has a different burning rate than the two possible vertical conditions. A review of this solid surface problem can be found in Refs. [45a, 45b, 45c],... 

The KDIE value normally is expressed as a ratio between reaction rate constants of the normal C—H compound and its C—D labeled analogue. While kh/ka rate constants are most often used, inverse induction period times ta/th > critical temperature Tch/Tca burn rates rbh/rbd, s id impact sensitivity Va/Vh > can be used since they all are dependent upon the global decomposition rate of the given energetic compound. This is especially important in chemical reactions or processes when one cannot directly obtain an experimental rate constant (k).5,7-10 There are three characteristics regarding the KDIE which one must remember, especially as it might apply to the complex thermochemical decomposition process of an energetic material ... 

There are several modes for the frontal polymerization of metal-containing monomers. One such mode is polymerization in a high-temperature burning regime. This method is followed by thermolysis of the products to obtain metal-containing composites that include nano-sized materials. The kinetic peculiarities of high-temperature pyrolysis of the Co(II) acrylamide complex have been studied [84], The rate of the process is approximately satisfied by a first-order equation of autocatalysis (Eq. 4-26), where k = 4.2-10 exp[-24,000/(7 )] (s ), 0 l.910 ... 

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