| 摘要 |
<p>A carbon fiber reinforced resin composite material for use at an extremely low temperature, characterized in that in a helium gas leak test after loading the material in liquid hydrogen with a 6000 ν strain for 30 min, a leaked volume rate is 1 X 10?-9 N cm3/ cm2¿/s or less; a carbon fiber reinforced resin composite material using a matrix resin of an epoxy resin having a homogeneous phase, characterized in that it has a glass transition temperature of 150 ° or higher and an elongation at break in a 90 ° tensile test of 1.2 % or more; and a partition wall using these material. These materials not only are excellent in strength and thermal resistance, but also are free from the leak due to clacking even when cooled to an extremely low temperature.</p> |
