User’s dilemma: Case
Mixing with a propeller mixer unnecessarily cuts fibers into pieces
We are conducting research of a unique radio wave absorbing wall material. This wall material is used in specially shielded rooms, such as an electromagnetically shielded room. Special carbon fibers mixed in the wall material prevent reflection of radio waves by the walls, making it possible to collect only weak electromagnetic waves emitted by verification equipment.
In the past, we used conventional propeller mixers to mix carbon fibers, but carbon fibers were unnecessarily cut into pieces due to the shear force of the propellers, regardless of how we operated the mixers.
Failure to maintain fibrousness decreased the material’s ability to absorb radio waves, making it impossible to achieve the expected performance. Therefore, we needed to find a mixing method that does not reduce the fibrousness of material.