The Compression and Solidity of the Plant (III)

Rheological Behaviour of Powdered Plants

Abstract

Alfalea meal was compressed in the cylinder 10mm in internal diameter. Pressure-density relations and relaxation spectra were investigated by the experiment of stress relaxation.
1) Heating increased slightly the strain and density of compressed plant of meal but gave it a good solidity.
2) Pressure did not increase over a certain value and the solidity of compressed plant was bad in case of compressing high moisture content material (over about 30%) by a piston.
3) Relaxation spectra were large in case of high piston pressure, low piston speed, high moisture content and high temperature of the plant material.
4) Dimensions of relaxation spectrum of compressed plant material which was in the cylinder was influenced by piston pressure, difference between piston pressure and base pressure and friction between compressed plant material and the inner wall of the cylinder.