Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 08, 2016 - October 10, 2016
Since UV photopolymer used in the MEMS is not excellent mechanical properties, it is necessary to improve the mechanical properties by composite materials. There are Cellulose Nano Fibers(CNF) in one of the reinforcement. Since It has Hydrophilic Groups, it is difficult to disperse by adding CNF to general hydrophobic photopolymer. For that reason mechanical properties were also decreased. In this study, we created a composite material by adding CNF to UV photopolymer. And we discussed the effects of the various addition conditions on the dispersibility of the CNF, and the effect of the mechanical properties evaluated by tensile testing of micro-specimens. Previous studies have used a method to freeze-drying the CNF, but the tensile strength has fallen greatly decreased. We were dispersed CNF in the photopolymer by Replacing water of CNF slurry in acetone by using centrifugation. Because it has improved dispersibility of the CNF, it was possible to suppress a decrease in fracture strain.
