2017 Volume 63 Issue 2 Pages 49-54
Carbon fiber reinforced thermoplastic (CFRTP) is able to change a shape after molding by re-heating. By using the characteristic, we contrived a CFRTP pipe which can be re-shaped at an on-site, for example, in construction work or in earthwork. In this study, we estimated bend property of CFRTP pipe. The CFRTP pipes which had various Vf and braiding angle were prepared by using braid with commingled yarn, and by using low compression molding with heat shrink tube. The commingled yarn was composed of carbon fiber and polyamide12 fiber. The CFRTP pipes had 4 plies, 25mm of outside diameter, and 22mm of inside diameter. The CFRTP pipes were bent into U-shaped of radius 90mm, after heating 190°C. As the results, CFRTP pipe which had 40% of Vf and 50 degrees of braiding angle could be bent well without fold or void.
