Different surface functionalized nano-Fe3O4 particles for EVA composite adhesives

In this paper, nano-Fe3O4 particles were surface functionalized by five ways for preparing EVA base composite adhesives. Nano-Fe3O4 particles were functionalized by Silane coupling agents (YDH151 and KH560), polymer shells (poly(ethyl-acrylate) (PEA) and polystyrene (PS)) and a low temperature plasma (LTP) process. The result of peel test shows that peel strength increases after adding five different functionalized Fe3O4 particles. YDH151–Fe3O4 particles have the best performance in enhancing peel strength. To find the reason why peel strength increases, morphology and crystallization of composite adhesives are studied. The morphology result shows that YDH151–Fe3O4 particles have the best dispersion in composite adhesives. Also, after adding functionalized Fe3O4 particles, crystallinity of composite adhesives increases. And YDH151–Fe3O4 particle is the best one in improving crystallinity.