## 3 Results and Discussion
### Viscosity Behaviour Results  
The viscosity properties of polymers are related to the behavior of the material against heat energy. Viscosity is related to temperature, pressure, flow rate, and molecular weights. However, the phase of the material is an important determinant. In our study, the thermal behavior of our material during processing at temperatures between 220 and 270 degrees was examined.  
The viscosity of a fluid can be characterized by its behavior under constant shear rate and constant temperature conditions. This is particularly important in the study of rheology, which deals with the flow and deformation of materials, including liquids.  
These are materials that do not comply with [PERSON]'s law of viscosity and generally show viscosity change depending on the deformation rate or force. Especially in non-Newtonian materials such as polymers, the interaction of viscosity with heat is very important. Viscosity is determined by the constant shear rate and constant temperature parameters. Shear rate is related to how the layers in the material slide on one another. It can also provide information about the deformation of the material. Viscosity values at a constant shear rate and constant temperature are shown in Figure 6.  
The behavior of the material between 220 and 270 degrees was determined in the experimental study.  
There is a linear decrease in viscosity because of the temperature increase from 220 to 260 degrees. However, an increase in viscosity is observed at 270 degrees. As the shear rate increases, the viscosity decreases. It has been determined that this decrease begins dramatically at 220 degrees and much earlier at other temperature values.  
At 260 and 270 degrees, a more limited decrease in viscosity values was observed despite the increase in shear rate.  
The storage modulus value provides important data in determining the relationship between the fluidity and deformation of materials. Figure 7 shows the storage module data of the material. In the data obtained from the test results, a decrease in storage modulus values is observed due to the increase in temperature.  
Loss modulus values were examined in the experiments to determine the energy lost by the material during deformation (Figure 7). When the amount of energy lost by the material during deformation is observed, it is seen that the value increases at 100-120 degrees. Between 120 and 150 degrees, there is a dramatic decrease due to the increase in temperature. From this point onwards, a linear loss of value was detected with temperature increases up to 260 degrees.  
\begin{table}
\begin{tabular}{c c c c} \hline \hline  & & & \\ \hline
**Material** & **Nozzle Temperature** & **Top Surface** & **Bottom Surface** \\ \hline ABS & 220 \({}^{\circ}\)C & 61.29 & 75.38 \\ ABS & 230 \({}^{\circ}\)C & 59.76 & 72.59 \\ ABS & 240 \({}^{\circ}\)C & 58.57 & 69.93 \\ ABS & 250 \({}^{\circ}\)C & 57.16 & 68.03 \\ ABS & 260 \({}^{\circ}\)C & 56.21 & 66.38 \\ ABS & 270 \({}^{\circ}\)C & 55.03 & 64.38 \\ \hline \hline \end{tabular}
\end{table}
Table 10: Hardness values of ABS fabricated at different nozzle temperatures.  
Complex viscosity is an important parameter for evaluating the results obtained depending on the storage and loss modulus values. The complex viscosity value given in Figure 7 decreases with increasing temperature.