Global Journal of Researches in Engineering, J: General Engineering, Volume 22 Issue 1

lobal Journal of Researches in Engineering ( ) Volume XxXII Issue I Version I J G 19 Year 2022 © 2022 Global Journals Figure 18: Influence of shell powder on phase change temperatures of elaborated PVC. Figure 19: Influence of palm kernel shell powder on mass losses during thermogravimetric phase changes of PVC. Figure 18 shows that the THCl, Tco Tfr and Tcar measurement results obtained in Figure 11 vary from the F0 formulation to the F51.02 formulation. The trend lines connecting each point representative of the results of each formulation remain polynomial of the type y=ax3+bx2+cx+d (where y represents the Thermal Properties and x the loading rate of the palm kernel shell powder in the tube). The layouts of the results show that all points pass through the different straight lines. The regression of the measurements shows that it is exactly 1 presenting the precision in the formulations, elaborations and analyses. In the same way, when we go through the results of the thermal decrease of the masses of the unloaded PVC tubes to the PVC tubes loaded with 51.02% of the palm kernel shell powder figure 12, we obtain that the results of the decrease of mass at the phase transitions of dehydration (Mh), dehydrochlorination (MHCl), condensation (Mco), fragmentation (Mfr) and residual calcination (Mcar) have the same observations as those observed at the temperatures of the phase transition. Thus, we obtain in figure 19 that the trend lines connecting each point representative of the results of each formulation remain polynomial of the type y=ax3+bx2+cx+d (where y represents the Thermal Properties and x the rate of load of the palm kernel shell powder in the tube), and The regression of the measurements shows that it is exactly 1, confirming the accuracy in the formulations, elaborations and analysis of the tubes. Table 2 shows the mathematical models to be used for the calculation of the thermogravimetric phase transition properties of PVCs with palm kernel shell powder as load. Mathematical Models for the Calculation of the Thermal Properties of PVCs as a Function of Dosage with the Load of Palm Kernel Shell Powder from the Results of Experimental Practice ii. Mathematical models for the calculation of thermogravimetric (TG) parameters of tubes