Discussion
A powder intended for injection moulding requires
Answer: D
Correct answer: a large proportion of organic binder to be added
Injection moulding requires the feedstock to flow into the mould under pressure, so the powder is compounded with 30 to 50 per cent by volume of thermoplastic binder. That is far more than any other forming route uses, and it is why the removal of it afterwards is the process’s central difficulty.
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