HELP.anyone know how to make dilatant?

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Discussion Overview

The discussion revolves around the production and understanding of dilatant materials, specifically seeking assistance in creating a chemical compound referred to as "dilatant." Participants explore the properties and examples of dilatant fluids, as well as inquire about commercial alternatives.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks help from a chemist to produce a chemical known as "dilatant," suggesting they have a formula but require expertise.
  • Another participant suggests that "dilatant" may refer to a compound similar to those produced by Dow Corning, specifically mentioning Silly Putty as an example.
  • A participant clarifies that "dilatant" is an adjective describing a rheological property, where a fluid increases in viscosity with increased shear, citing cornstarch in water as an example.
  • There is a brief mention of "dilettante," possibly as a play on words or misunderstanding.
  • Beach sand is discussed as another example of a dilatant material, particularly in the context of its behavior under different velocities.
  • One participant explains that at low velocities, dilatant materials have lower viscosity, while at high velocities, viscosity increases significantly, referencing common experiences with mudpies.
  • A participant with experience in rheology supports the previous claims about dilatant materials and shares their background in the field.
  • Another participant expresses gratitude for the information shared and links provided in the discussion.
  • A question is raised about the differences between D3O and dilatant compounds, along with inquiries about commercial formulas for such products.

Areas of Agreement / Disagreement

Participants exhibit a mix of agreement and differing interpretations regarding the definition and examples of dilatant materials. While some clarify the properties associated with dilatancy, others introduce new examples and questions that remain unresolved.

Contextual Notes

There are varying interpretations of the term "dilatant," and the discussion includes assumptions about the properties and applications of dilatant materials. The references to specific examples may depend on the context of use and definitions applied.

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HELP...anyone know how to make dilatant?

I am looking for someone that is capable to produce a chemical called "dilatant"

I got my own set of the formula to make dialtant but I need a chemist to help me out.
 
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I believe one wants to make a 'dilatant' compound, along the lines of what Dow Corning has made, a version of which became known as Silly Putty.

http://www.statease.com/playputty.html

http://en.wikipedia.org/wiki/Silly_Putty
 
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"Dilatant" appears to be just an adjective being used as a noun. Dilatancy is a rheological property. A fluid which increases viscosity as shear is increased is called "dilatant" (an adjective, not a noun). A good example of a dilatant fluid is cornstarch dispersion in water (I do not know at what concentrations).
 


Dilettante?
 


Beach sand as well (at least along the Gulf coast in Texas).
 


chemisttree said:
Beach sand as well (at least along the Gulf coast in Texas).

maybe misunderstood from wikipedia? Quote from the article:
At low velocities, the liquid acts as a lubricant, and the dilatant flows easily. At higher velocities, the liquid is unable to fill the gaps created between particles, and friction greatly increases, causing an increase in viscosity
,... and then the "cornstarch" example is given.
 


No. You aren't misunderstanding Wiki. At low or slow velocity, a dilatent material (usually a suspension) will have a lower viscosity than at high velocity. The beach sand can be handled quickly and form a ball which then melts away when you stop handling it. It is actually a wonderful example that almost everyone who has made mudpies understands.

I used to run the rheology equipment in our Division... actually I set up the laboratory and trained all of the operators. I've heard of it...
 


chemisttree is right!
 


Astronuc... Thank you for all the geart information and the links!
 
  • #10


I just wonder what is the different between D3O ( www.d3o.com/) and dilatant compound?? Is there any commercial formula for this product??
 

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