Table 1. Label and Description, Gel Fraction, And Onset Degradation Temperature of PU Thermoset Networks N1–N5.

thermoset network	central group	OH:NCO ratio	chain extension	gel fraction	onset deg. temp. (°C)
N1	amine	1.05:1.00	Y	0.95	244.6
N2	methyl-Si	1.05:1.00	N	0.97	311.2
N3	phenyl-Si	1.05:1.00	N	0.97	309.7
N4	methyl-Si	1.05:1.00	Y	0.99	284.3
N5	phenyl-Si	1.05:1.00	Y	0.97	291.4