Improvement of the interfacial fracture toughness of the layer interfaces is one way to increase the performance of interlayer hybrid laminates containing standard thickness carbon/epoxy plies and make them fail in a stable, progressive way. The layer interfaces were interleaved with thermoset 913 type epoxy or thermoplastic acrylonitrile–butadienestyrene (ABS) films to introduce beneficial energy absorption mechanisms and promote the fragmentation of the relatively thick carbon layer under tensile loads. Carbon layer fragmentation and dispersed delamination around the carbon layer fractures characterised the damage modes of the epoxy film interleaved hybrid laminates, which showed pseudo-ductility in some cases. In the ABS film interleaved laminates, a unique phase-separated ABS/epoxy inter-locking structure was discovered at the boundary of the two resin systems, which resulted in a strong adhesion between the fibre-reinforced and the thermoplastic layers. As a result, the delamination cracks were contained within the ABS interleaf films.

改善层界面的界面断裂韧性是增加包含标准厚度的碳/环氧树脂层的层间混合层压材料的性能并使其以稳定，渐进方式失效的一种方法。层界面与热固性913型环氧或热塑性丙烯腈-丁二烯苯乙烯（ABS）膜交错插入，以引入有益的能量吸收机制并促进在拉伸载荷下相对较厚的碳层的破碎。碳层断裂周围的碳层破碎和分散分层是环氧膜交错混合层压板的损伤模式，在某些情况下显示出伪延展性。在ABS薄膜交错层压板中，在两个树脂体系的边界处发现了独特的相分离ABS /环氧树脂互锁结构，这导致了纤维增强层和热塑性层之间的牢固粘合。结果，分层裂纹被包含在ABS插页膜内。