Abstract
The purpose of this study was to investigate the effect on the porosity development in three powder-liquid type reline materials on a simulation model.
The influence of the kinds of reline materials, mixing methods, L/P ratio, load timing and spillway were examined.
The results obtained were as follows:
1. Rebaron LC was the smallest on the number of porosities and percentage of porosity per unit area regardless of L/P ratio, followed by TOKUSO REBASE, Rebaron.
2. Method of the mechanical mixing with vacuum (VAC-MECH) decreased the number andpercentage of porosity. Using VAC-MECH was statistically significant by handmixing (HAND) and handmixing with vibrator (VIB), so VAC-MECH was effective for decreasing porosities.
3. When the monomer was decreased by 20%, the number and percentage of porosity by HAND increased in all reline materials.
4. When the load was added later, the number and percentage of porosity decreased by HAND.
5. On the model without a spillway, the percentage of porosity was tended to increase.
6. Porosities under 0.6 mm in diameter occupied over 80% in all reline materials.
