Abstract: Objective To study the effect of sand blasting and coating binder on the bonding strength of different tray materials and silicone rubber. Methods Stainless steel, auto polymerizing acrylic resin and light cured resin were selected as tray materials. 40 standard test pieces were made of each kind of tray materials. They were randomly divided into four groups with the same material specimens, control group: the specimens were not treated; binder group: the specimens were coated with tray adhesive; sandblasting group: the specimens were sandblasted; spray sand and binder group: specimens were sandblasted and then coated with tray adhesive, and contacted and bonded with silicone rubber material in testing device, then tensile test was conducted, and the results of the calculated binding strength were recorded. Results When sand blasting and binder were used, the binding strength of the three materials was the highest. When sand blasting was used alone, the binding strength of the resin material obviously increased, while the strength of the stainless steel decreased obviously. When the binder was used alone, the binding strength of the three materials significantly improved. Conclusion The best combination of sand and binder significantly improves the bonding strength of the pallet. The use of adhesive or sand blasting in the resin material tray has a certain effect on increasing the bonding strength of the tray. Metal tray using binder can also increase the strength of the tray.

Key words: sand blasting, tray adhesive, bonding strength, tensile test