回転式剪断破砕機によるGFRPの破砕に関する研究
1984 年 100 巻 1157 号 p. 581-586
詳細
1984 年 100 巻 1157 号 p. 581-586
The size reduction of waste polymer and composite materials has become an important subject in the field of waste reclamation. And then energy consumptions by size reduction of waste polymers are very large for the reason of their high strength.
Therefore, using a shredder-type crusher having fixed and rotary cutting blades, the effects of clearance between cutting and fixed blades, open size of screen and pulverizing resistance on the pulverizing efficiency and rate have been investigated experimentally for 2 kinds of GFRP.
The results obtained are as follows:
(1) Pulverizing efficiency η increased with decreasing clearance C and increasing open size of screen D.
(2) Pulverizing efficiency η decreased with increasing pulverizing resistance F1, for D=6-4mm, this F1 was in proportion to ILSS (Interlaminer shear strength), but for D=12-8mm, inversely as that.
(3) Pulverizing efficiency η and rate constant K1 are shown next eq.(a)-(b).
ln (l-η) =-K1·T+K0.(a)
K1=-Dm1/Cm2·F1.(b)
m1=1.25-1.71, m2=2.09-2.36
K0: constant
(4) Pulverizing rate constant K1 for GFRPs are smaller than that for resins.
