铺放条件对低能电子束原位固化复合材料层间剪切强度的影响

uring the low energy electron beam(E-Beam) curing process, prepregs were irradiated layer by layer and placed by the compaction roller to fabricated the pre-performed laminate, after which the laminate was post-cured in an heating oven for getting fully cured composites. In this paper, the effect of compaction force, compaction roller's material and the placing temperature on the interlaminar shear strehgth(ILSS) of the laminate were investigated. Experimental results showed that the optinimum compaction force turned out to be 1200N, under which the ILSS of the laminate is 61.9MPa; An anti-sticking silicon rubber with low surface energy could automatically deform with the compacted laminate and effectively reduce the interlayer defects, leading to a higher ILSS; Referring to the placing temperature, results showed that the best ILSS appeared when laminates were placed at ambient temperature. Higher temperatures resulted in lower ILSS due to the increased curing degree of the irradiated prepregs, leading to poor combination between adhesive layers.