| 摘要 |
<p>A process for making nanofibers includes preparing a fluid suspension of fibers, shear refining the fibers to create fibrillated fibers, and subseque ntly closed channel refining or homogenizing the fibrillated fibers to detac h nanofibers from the fibrillated fibers. The shear refining of the fibers i n the fluid suspension generates fiber cores having attached nanofibers. The closed channel refining or homogenizing of the fibrillated fibers is initia lly at a first shear rate and, subsequently, at a second, higher shear rate, to detach nanofibers from fiber cores and to create additional nanofibers f rom the fiber cores. The fiber suspension may flow continuously from the she ar refining to the closed channel refining or homogenizing, and include cont rolling the rate of flow of the fiber suspension from the shear refining to the closed channel refining or homogenizing.</p> |
