Powder Injection Molding, Binders

AI Thread Summary
The discussion focuses on the composition of binders used in Powder Injection Molding (PIM), specifically the ratios of surfactants, fillers, and backbones. It highlights that an optimal binder composition might include around 3% weight PVA for achieving higher green densities, while surfactants typically comprise less than 1%. This raises questions about the proportion of fillers, suggesting they could exceed 95%, which may indicate an imbalance in the binder formulation. The conversation emphasizes the importance of understanding these ratios for effective PIM processes. Overall, achieving the right binder composition is crucial for successful powder shaping before sintering.
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Hi, I was just curious, I needed verification, I am reading up on PIM process and I see they use "binders" to keep the shape of the powders before sintering, anyways as I've been reading the binder consists of a surfactant, a filler and a backbone, I was just curious as to what ratios are there between these 3? I was reading on an article that 3%wt PVA was optimal for higher green densities, and from what I've read on surfactants they are usually under 1%, does that mean that the filler is usually over 95%? or is this ratio really bad?
 
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The technology of Powder Injection Molding originated in 1973.
 

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