A major problem with carbon fiber/epoxy (CF/EP) composites is their weakness to resist interlaminar delamination originating from the brittle epoxy matrix. Interleaving has been long studied as a solution. In this work, carbon nanotubes (CNTs) were uniformly decorated on electrospun polycaprolactone (PCL) nanofibers by ultra-sonication to form flexible interleaves for CF/EP laminates. Upon epoxy curing, PCL nanofibers were phase separated from epoxy, and CNTs could be uniformly distributed within the matrix. Results obtained showed that modes I and II interlaminar fracture energies of CF/EP laminates interleaved with CNT-decorated PCL nanofibers were enhanced by 68% and 44%, respectively. Synchronous improvement of 7.5% on the interlaminar shear strength of CF/EP laminates were also achieved. Moreover, the glass transition temperature of the interleaved laminates was maintained as that of epoxy because of the introduction of the CNTs.

碳纤维/环氧树脂（CF / EP）复合材料的主要问题是它们难以抵抗源自脆性环氧基质的层间分层。作为一种解决方案，对交织进行了长期的研究。在这项工作中，碳纳米管（CNTs）通过超声在电纺聚己内酯（PCL）纳米纤维上均匀地装饰，以形成用于CF / EP层压板的柔性隔层。环氧固化后，PCL纳米纤维与环氧树脂相分离，并且CNT可以均匀地分布在基体内。所得结果表明，与CNT装饰的PCL纳米纤维交错的CF / EP层压板的I和II层间断裂能分别提高了68％和44％。同时实现了CF / EP层压板的层间剪切强度同步提高7.5％。此外，