Abstract
Wetting behavior of liquid state resin material before curing is an important design factor for component and process designs of resin products. Resin material before curing consists of monomer, filler, etc., and those components affect the wettability of a whole droplet. However, behaviors of them are still unclear and difficult to reveal in experiments. An effective analysis method which covers molecular level interactions and wetting behavior of a droplet is nessesary for material developments. In this study, coarse-grained molecular dynamics (CGMD) simulations are performed, and wetting behaviors of droplets consisting of monomers and fillers are revealed. In the simulations, monomers adhere to a solid surface and spread along that. Fillers also spread, however, some fillers are vertically piled in the droplet. In the simulations performed by the droplets of the small filler ratio, piled fillers decrease and then the whole droplet show the low contact angle. Wetting behavior of a droplet is sucessfully observed by the CGMD simulations.
