The second
exothermal effect during pyrolysis and combustion of cellulose became apparent at the temperature of 405-470[degrees]C (max -456.
The reaction rate and
exothermal effect at this composition were very high.
Today's pump shafts are generally "sealed" with a nitrogen blanket that will prevent this oxide formation, but when this system is out of order, this
exothermal oxidation reaction can be expected.
The
exothermal reactions of iron and other alloying elements are complex.
The SHS process represents conditions of passing of the
exothermal reaction (reaction of burning), in which heat output is localized in the layer and is transferred from a layer to a layer as a result of heat transfer [1-5].
3] 1,02-1,12 Gel time, min 120-180 Peak
exothermal temperature, [degrees]C 150-170 Shrinkage, % 2,0-2,5 Filled coatings (mastics, polymer concrete) Tensile strength, MPa 9-10 Compressive strength, MPa 80-90 Flexural strength, MPa 18-22 Flexural modulus, MPa (0,2-0,6) x [10.
The more complete polymerization achieved in online UV curing was attributed to a greater increase in the sample temperature due to the faster
exothermal reaction.
The signal was then a measure of the
exothermal reaction in the measuring cell.
Two endothermal peaks and one
exothermal peak appeared in the DSC curves and the liquid crystalline phase was observed by POM during heating and cooling.
The
exothermal reactions of iron and other alloy elements are complex and high alloy steels have a high content of alloy elements, which can lead to differences with regard to the cutting of common steels.
The more extensive cure achieved, at equal UV dose, by operating under intense illumination was attributed to the heat evolved by the
exothermal polymerization.
Regarding the results for 2,000 K/s, no significant
exothermal peak can be measured during cooling indicating that the melt has presumably solidified primarily in the glassy state.
