Simultaneous and Gradient IPN of Polyurethane/Vinyl Ester Resin: Morphology and Mechanical Properties

Table 1

Mechanical properties calculation results of 70/30 s-IPN and g-IPN with different component sequences.

Samples	𝑡/h	E/MPa	𝜎/MPa	𝜀/%
70/30∼80/20∼90/10 g-IPN	2	0.8	0.70	126.94
	3	0.7	0.74	140.16
	3.5	0.6	0.91	193.78
60/40∼70/30∼80/20 g-IPN	2	1.3	0.71	75.00
	3	1.2	0.83	101.78
	3.5	1.6	0.94	89.69
70/30 s-IPN		2.9	1.07	49.09