## 4 Discussion  
### Influence of the Chemical Groups on Wettability and Icephobicity  
Modifications with polysiloxanes functionalized with the AGE and HEX functional groups yielded the best icephobic results (the lowest ice adhesion value and the highest freezing delay time of water droplets). The modifications with polysiloxanes functionalized with the AGE and OCT functional groups achieved inferior results compared to those obtained using the AGE and HEX groups, but also achieved a significant improvement in the anti-icing properties compared to the unmodified sample. In addition, the higher content of the HEX functional group relative to the AGE functional group (i.e., 4:1) made it possible to obtain a significantly higher freezing delay time of water droplets and a slightly lower ice adhesion value compared to samples with a lower content of the HEX functional group relative to the AGE group (i.e., 2:1). In the case of modifications with polysiloxanes with the OCT functional group, the above relationship was not observed, and the values of the parameters of the icephobic properties were similar to each other. In summary, the polysiloxanes functionalized with the HEX functional group provided better icephobic properties to the epoxy-silicone surface compared to the polysiloxanes functionalized with the OCT functional group. In addition, the sample with the higher content of HEX functional groups recorded the best icephobic properties.  
Regarding the hydrophobic properties, it can be said that the polysiloxanes functionalized with the AGE and HEX functional groups were characterized by higher WCA values and lower RoA values compared to analogous polysiloxanes functionalized with the AGE and OCT functional groups. It should be added that the WCA values were not diametrically different from each other, as the three modifications yielded very similar WCA values; only the sample modified with polysiloxane functionalized with the AGE and OCT groups in a ratio of 1:2 obtained a lower WCA value of 84\({}^{\circ}\). It should be added that this value is not diametrically different from the other values of the modified samples, which also did not cross the boundary between hydrophobicity and hydrophilicity. As for the RoA values, the differences between the above polysiloxanes were significant. Comparing the WCA and RoA values of samples modified with polysiloxanes functionalized with the same functional groups but in different molar ratios, it can be concluded that they were very close to each other. The CAH values of all modified samples were in a similar range. In summary, the polysiloxanes functionalized with the HEX functional group provided better hydrophobic properties to the epoxy-silicone surface compared to the polysiloxanes functionalized with the OCT functional group.  
Among the samples tested, the highest stability of the WCA values at reduced temperature was recorded for the sample modified with polysiloxane functionalized with the AGE and OCT groups in a ratio of 1:2, while the lowest stability was recorded for the sample modified with polysiloxane functionalized with the AGE and HEX groups in a ratio of 1:2. Polysiloxanes with higher ratios of the AGE functional group to the OCT/HEX groups showed very similar relationships. Thus, it can be concluded that polysiloxanes functionalized with the OCT functional group lead to a better stability of the WCA values of silicone-epoxy surfaces compared to polysiloxanes functionalized with the HEX functional group.