Question 1

What exactly does a binder do in ceramics?

Accepted Answer

A binder holds the mineral particles of the body together before firing so the piece can survive forming, handling and drying without breaking. The permanent bond forms only in the kiln.

Question 2

What is the difference between a binder and a plasticiser or deflocculant?

Accepted Answer

A binder targets the strength of the dry body, while plasticisers and deflocculants control the behaviour of the slurry in its liquid state. These are different objectives, and in a single system they can sometimes interfere with each other.

Question 3

Does a binder affect the properties of the fired product?

Accepted Answer

A suitable organic binder should burn out completely before sintering begins. If the firing cycle does not allow complete burnout, carbon residue can affect colour or porosity, which is why matching the binder to the firing cycle matters.

Question 4

How do I know whether my problem is binder related?

Accepted Answer

If breakages occur mainly between forming and kiln entry rather than after firing, the issue is most likely green strength. Recording exactly where and at which stage scrap occurs is the first and most useful step.

What Is a Binder? A Complete Guide to Ceramic Binders and Green Strength