Polyurethane Foam
Chances are, sometime today you have used a product containing polyurethane foam. Discover its amazing properties!
This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - elearning.flinnsci.com
ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting.
Be sure to subscribe and check out more videos!
Subscribe: kzread.info/dron/inn.html...
Facebook: / flinnscientific
Website: www.flinnsci.com/
Пікірлер: 39
why isn't the audience laughing? he's so funny! this is awesome!
This gives a new meaning to foreplay and calculus.
How can I get my hands on some A and B stuff? I asked at Lowe's which Isle A and B is and they looked puzzled then asked me if it was a cleaning agent. I said it wasn't because A is in a separate bottle than B and is cheaper buying it that way than it is to buy a bottle of C which is premixed. More puzzed they looked then asked if it was something like Auto Antifreeze. I just gave up, threw my hands up, and walked out. So, here I am again and still can't find where to get any...
Reminded me of Dr. Waltwr Lewin from MIT
Where did you get your t shirt? it’s amazing!! Need!
Dzień dobry. Chciałbym zrobić lakier uretanowy na bazie diizocyjanianu heksametylenu. Jaki poliol (glikol) zalecasz?
Wow!!!
I understand this is supplier's demo, but i'd really like a complete lecture instead :(
"I can do it digitally...to two significant digits".
@isidoreaerys8745
5 жыл бұрын
Pure Gold.
Does this reaction cause fumes that are toxic or could be an irritant to the respiratory system?
@janszreniawski
9 ай бұрын
No.
Idk how the audience was so quiet i lol’d throughout this presentation.
Your t-shirt is sick Sir
Mixing chemical based on the volume of product? How much to mix for volume?
@Curiosity_Cars
7 ай бұрын
50/50 mix..... ?
Is it toxic?
Dear teacher, you are now dealing with ready-made commercial mixes, but can you manufacture flexible polyurethane foam from its basic components and reveal the secret of commercial mixes?
I really just googled calibrated goggles I’m so mad 😡
What is Elastopor H1300/22/p050 its Kind of polyurethane . Please i need expliquation
@bayrampoyraz5215
3 жыл бұрын
Probably 1,4 diisocynate (diphenylmethane) (a) and polyeterpolyol consisting tertiary amine as catalyst and silica as surfactant (b)
What is the name of A and B?
@VanessaMonsivais
Жыл бұрын
uretane resin and Isociunarate, wich creates polyisociunarate, commonly known as polyurethane foam
I cant find a and b online, any help?
@FlinnScientific
8 жыл бұрын
Here is a link to the kit used in this demo (with "a" and "b" chemicals included): www.flinnsci.com/store/Scripts/prodView.asp?idproduct=18034
@brockbaker3able
6 жыл бұрын
Just look up boat foam
WHAT is with the green head band?
@FlinnScientific
8 жыл бұрын
+Johnny Wewoka It's the strap to his goggles.
@11304800
8 жыл бұрын
FlinnScientific OOOOK LOL
What are A and B?
@ericweiss9893
5 жыл бұрын
Cellicon VN I’m guessing an isocyanate and a polyol maybe with some kind of hardener and/or additives
@blahbleh5671
5 жыл бұрын
pee and poo
hi i want to know about this video ( kzread.info/dash/bejne/mGmcqdGIoqqtoc4.html) what kind of polyurethane he used and what is the way to do like this
Yeah, but what does B + A = ? Got ya stumped right!
Too bad they didn't show the glove blow up entirely. Would have loved to see that.
Z
Crap!
Such sloppy work, of course you are a professor so it’s just fine. Personally I would have enjoyed a talented forth grader.