摘要:
A three-dimensional composite reinforcement, a three-dimensionally reinforced multifunctional nanocomposite, and methods of manufacture of each are disclosed. The three dimensional reinforcement comprises a two dimensional fiber cloth upon which carbon nanotubes have been grown, approximately perpendicular to the plane of the fiber cloth. The nanocomposite comprises the three-dimensional reinforcement and a surrounding matrix material. Examples illustrate improvements in the through-thickness mechanical, thermal, and electrical properties of the nanocomposite, in addition to substantial improvements in geometrical stability upon temperature changes and vibrational damping, compared to baseline composites reinforced with the two-dimensional fiber cloth alone. Embodiments of the nanocomposite may also be configured to perform multiple functions simultaneously, such as bearing a thermal or mechanical load simultaneously or bearing a mechanical load while also monitoring the state of damage within the nanocomposite.
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing a fiber formed article having sharp top point at the corner portion formed at the intersection point of two planes. SOLUTION: This method for producing the fiber formed article is as the followings, with which after taking out wet-state fiber laminate 10 from slurry containing fiber material, the fiber laminate 10 is press-formed and the fiber formed article having the corner portion 113 formed at the intersection point of two plane parts 111,112, is produced. The thickened portion 104 is arranged at near the corner portion 113, and the corner portion 113 is formed with the press-formation. A forming die used for press-formation is desirable to heat. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To uniformly disperse long fibers low in dispersibility in mortar or concrete by properly setting a process for kneading cement, water, sand, and fibers. SOLUTION: When fiber-containing mortar or concrete is kneaded, a mixture of cement and water, with a water/cement ratio adjusted to be 20-30%, is agitated, and then the mixture is added with fibers and agitated. Next, sand is added to the kneaded mixture. The materials, after being agitated to be mixed uniformly, are added with water and a chemical admixture so that a final water/cement ratio (W/C) is 25-60% to adjust fluidity. COPYRIGHT: (C)2003,JPO