Your Best Finish Starts With TTX!
Published

Colloid Chemistry 101

QUESTION: Just a comment on your answer to the question on applying Teflon coatings.

Share

QUESTION:

Just a comment on your answer to the question on applying Teflon coatings. I am fairly confident that there are no liquid Teflon coatings that are emulsions. They are all dispersions of the Teflon powder in a liquid medium (water or solvent based). Emulsions are mixtures of two non-miscible liquids—one being emulsified in the other. Teflon does not exist as a liquid at room temperature. Also, Teflon is a registered trademark of the DuPont Co., and DuPont is the sole manufacturer/supplier of it. I enjoy reading your column. J.L.

ANSWER:

You are absolutely right, J.L., and thanks for pointing it out. Furthermore, you are being too kind. You and I both know that you are absolutely confident that there are no liquid Teflon coatings that are emulsions. I knew that. Why did he think I didn't know that? As with a slip of the tongue, a slip of the pen is not the fault of the mind. After all, I am not as dumb as I look—and that's a blessing!

For the record, the following definitions are shown in the Federation of Societies for Coating Technology "Coatings Encyclopedic Dictionary":

Emulsion—two phase liquid system in which small droplets of one liquid (the internal phase) are immiscible in, and are dispersed uniformly throughout, a second continuous liquid phase (the external phase)

Dispersion—(1) any composition, process, or state, relating to heterogeneous systems of solids, gases, liquids or immiscible liquids . . . (2) process of dispersing a dry powder (or pigment) in a liquid medium in such a way that the individual particles of the powder become separated from one another . . . throughout the entire liquid medium.

 

Related Content

ENGINEERED PAINT BOOTHS & FINISHING SOLUTIONS
Your Best Finish Starts With Us!
Precision gear pumps
Gardner Intelligence
Heatmax Heaters ad with immersion heaters
Pretreatment Washer and Finishing Equipment
Filtration Systems
find masking products online
Precision gear pumps