Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 13, 2020 - September 16, 2020
The surface of silicone rubber composites sheet causes water droplet to be slipped with presence of VGCF (Vapor Growth Carbon Fiber). The availability of sliding property of water droplets like this sheet solves familiar problems such as difficulty in opening doors due to dew condensation in winter. The aim of this research is to develop a surface that water droplets are most slippery by mixing VGCF with silicone rubber. The composites sheet has a tendency that the VGCF does not disperse when the amount of VGCF added exceeds 3wt%. In order to improve this tendency, the effect of combining ultrasonic wave shooting into manufacturing process on the dispersibility was verified, and the dispersibility of VGCF was evaluated numerically. The dispersibility of VGCF can be calculated from deflection of the area ratio of VGCF in cross-sectional image of sheet. With shooting ultrasonic waves, it became possible to produce sheets with clearly dispersed VGCF. In the case of adding 5wt% of VGCF, the composition with shooting ultrasonic wave dispersed 20% more than the one without the ultrasonic wave. Two facts were discovered; the dispersibility was improved as the amount of VGCF was increased and affects the sliding properties of water droplets.
