回転式剪断破砕機による合成樹脂およびGFRPの破砕エネルギーに関する研究
1984 年 100 巻 1161 号 p. 1069-1074
詳細
1984 年 100 巻 1161 号 p. 1069-1074
The size reduction of waste polymer and composite materials has become an important subject in the field ofwaste reclamation. And then energy consumptions by size reduction of waste polymer and composites as GFRP (Glass Fibre Reinforced Plastics) are very large for the reason of their high strength and plastical properties.
Therefore, using a shredder-type crusher equipped with torque transducer (Fig. 3), the energy consumption by size reduction are measured for polymer and GFRP. And the effects of clearance between cutting and fixed blades and open size of screen on the pulverizing energy have been investigated. The results obtained are as follows:
(1) Pulverizing energy Ue decreased with decreasing clearanceCand increasing open size of screen. Pulverizing energy Ue is shown by next eq. for both polymer and GFRP.
1n (Ue) =A1·ln (C) +A2
A1, A2: Constants dependent on opensize of screen and material.
(2) Constants for resins andGFRPs are derived from the theory and experimental values. It is recognized thatA1 for resins is 1.1 and A1 for GFRP is 1.2
