Common binders are polypropylene (PP), random polypropylene (APP), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), polystyrene (PS), acrylic resin, and the like.
Among them, PE has excellent moldability; EVA has good compatibility with other resins, as well as fluidity and moldability;
APP has the characteristics of good compatibility with other resins, rich in fluidity and degreasing;
PS fluidity is good. The auxiliaries include paraffin wax, microcrystalline paraffin wax, denatured paraffin wax, natural paraffin wax, stearic acid, and compounding agent.
The flowability of the molding material can be evaluated using a high flow point tester and a melting indexer. When the content of the degreasing agent is large, the degreasing property tends to decrease, and if there are many paraffins in the additive, the degreasing property is good.
If all organic materials cannot be scattered in a specific temperature range, it will affect the sintering of ceramics. Therefore, it is necessary to consider the thermal decomposition characteristics and select them.