STATISTICAL ANALYSIS OF THE RESULTS OF SOME TECHNOLOGIES FOR COTTON FIREPROOFING

A fireroofing technology implies more phases and automatically there are more factors which can influence the efficiency. Cure temperature and concentration of Pekoflam DPN I were studied. To study the qualitative and quantitative effects exerted by the above-mentioned possible influence factors, a mathematical method for the results analysis, namely, the bilactorial dispersional analysis with systematic effects, has been employed. The bifactorial dispersional analysis leads to the computation of three statistical tests F. The application of a C++ personal program for the bifactorial dispersional analysis with systematic effects, of the 4x6 type, concluded with a multiple comparison (based on the Scheffe test) has made us find out that both the concentration of the used fire-retardant (named Pekoflam DPN I) and the cure temperature have significant influences upon the fireproofing efficiency. Even the interaction of the two above-mentioned factors has a certain influence, although much smaller, than that of the enumerated individual factors. The significant positive effects are attributed, with 99% statistical confidence, to the concentrations of 100 divided by 400 g/I fire-retardant and to the 160 C temperature while the negative effects are due to the concentrations of 500 and 600 g/I Pekoflam DPN I and to the 180 C cure temperature.