The Powder Injection Molding (PIM) process provides the ability to manufacture a wide variety of materials with mechanical properties that are near equivalent or in some cases exceed machining or cast process.
The binder system comprises of three different components
LOXIOL® 3172, typically 25 – 35 w% of the binder
Thermoplastic polymer (special co-polyamide) as backbone
- Polyamides provide a high material strength, which is beneficial for green and brown part stability
- Polyamides are polar materials and thus provide strong interaction to polar particle surfaces
LOXIOL® 2472, typically 60 – 70 w% of the binder
- Solid plasticizer, later removed in solvent debinding
- Lower processing temperature of polyamide
- Adjustment of binder characteristics such as rigidity and flow by ratio of polymer to plasticizer
LOXIOL® G 20, typically approx. 5 w% of the binder
- Stearic acid as Release Agent
Mixing
Binder formulation and binder-to-powder ratio can and should be adjusted according to the powder used. The higher the specific surface of the powder (lower particle size, water- vs. gas-atomized powder), the higher the plasticizer share in the binder and the higher the binder share in the feedstock.
The binder share in the feedstock is typically 35 – 40 % by volume.
Guide formulations can be provided upon request.
Assets of the Emery Oleochemicals Binder System
- Superior green and brown part strength; mechanical post-treatment in green state feasible
- Highest dimensional accuracy thanks to high powder loading and low shrinkage as well as low temperature solvent debinding
- A binder system made by experts in optimization of polymer processing
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