Bingham plastic that is not a suspension

In summary, the conversation is about finding a Bingham plastic that is not a suspension and can be used as an additive to water or a non-conductive chemical. The liquid should have a yield stress of 150 Pa to 250 Pa, be able to stand still in a system of tubes for weeks without separating, have a lifetime of at least one year, and have a low viscosity of a few hundred centistokes. One possibility discussed is long-chained silicon oil with polar side chains.
  • #1
Peter Hessellund
11
0
I am looking for a Bingham plastic that is not a suspension. It can either be in the form of an additive to water or a non conductive chemical. The liquid should have a yield stress of 150 Pa to 250 Pa. What liquid could be used here? Are there companies who tailor make these kind of liquids?
 
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  • #2
 
  • #3
They are not using a Bingham plastic and they are using a suspension.
 
  • #5
The properties of the liquid should be such that the liquid can be standing still in a system of tubes without separating into fractions even after weeks of zero motion. The liquid should also have a lifetime of at least one year and it should have as low a viscosity as possible. One possibility could be long chained silicon oil with polar side chains.
 
  • #6
Peter Hessellund said:
it should have as low a viscosity as possible.
"Low?" Or high?
 
  • #7
As low as possible and with the correct yield stress.
 
  • #8
Peter Hessellund said:
As low as possible

So what would be an upper bound on the viscosity you need? My low viscosity might be essentially solid compared to what you need.

I don't have any materials in mind I am just trying to get all of the information on display so someone wandering by may be able to give a suggestion.

BoB
 
  • #9
Viscosity should maximum be a few hundred centistoke.
 

1. What is a Bingham plastic?

A Bingham plastic is a type of non-Newtonian fluid that exhibits both solid and liquid-like behavior. It behaves like a solid until a certain amount of stress, known as the yield stress, is reached, after which it flows like a liquid.

2. How is a Bingham plastic different from a suspension?

A Bingham plastic is different from a suspension in that it does not contain solid particles suspended in a liquid. Instead, it is a homogeneous material with its own unique rheological properties.

3. What are the applications of Bingham plastics?

Bingham plastics are commonly used in industries such as food, cosmetics, and oil drilling. They are also used in the production of paints, adhesives, and other materials that require a certain degree of viscosity and stability.

4. How is the yield stress of a Bingham plastic determined?

The yield stress of a Bingham plastic can be determined through various rheological tests, such as shear stress ramp tests or rotational viscometry. These tests measure the stress required to initiate flow in the material.

5. Can a Bingham plastic behave like a solid at all times?

No, a Bingham plastic will always exhibit some degree of liquid-like behavior once the yield stress has been reached. However, in some cases, the yield stress may be very high, making the material appear more solid-like than liquid-like.

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