PURPOSE: To increase the strength, rigidity and at resistance and improve the workability by laminating cloths made of reinforced fiber between roving materials made of reinforced fiber, and using alicyclic epoxy resin as matrix resin.
CONSTITUTION: For FW method, carbon fiber 1a of roving material 1 wound around a bobbin is passed through a matrix resin M impregnating device 5, then wound around a core 6, and a laminated structure of cloths 2 is inserted in a specified FW forming process by hand lay up method. After the weight of the resin-impregnated roving material 1, the cloths 2 reach a specified value, they are hot-pressed and formed by upper and lower dies incorporating a sheathed heater. For matrix resin, alicyclic epoxy resin is used, and the resin is mixed with acid anhydride system curing agent to make matrix resin M. Thus, the manufacturing and operating efficiency is enhanced, and a material of high strength and high rigidity exhibiting composite material characteristics can be obtained.
MATSUMOTO IWAO
NAKAGAWA AKIRA
DOI YOSHIHARU
YANO KATSUMI
YANAGIHARA KIYOSHI
TAKAYANAGI TOSHINOBU
IKEDA HIDEO
FUJITA KOICHI
NAGARA MASARU
KURODA SEIKEI KK
TAKAGI SEIKO KK
TOYO KAKOU KK
NAGAE TETSUKOU KK
| JPS5732917A | 1982-02-22 | |||
| JPS5779345A | 1982-05-18 | |||
| JPS5828454A | 1983-02-19 |