Indestructible Coating?!


From the top of this forty-five meter drop tower, my friends from the “How Ridiculous” YouTube channel are about to release a watermelon. Here we are. In free fall for a full three seconds, the watermelon accelerates to over 100 kilometers per hour before smashing into the ground. The results are predictable, but this was just a control for the actual experiment. Another watermelon was sprayed with the polymer coating. Se’ll come back to what this is and how it works, but for now, let’s see how the coated watermelon fares in the drop test. That’s insane! [ laughing ] Instead of shattering, the watermelon bounces and remains intact. For the most part, anyway. It’s a definitly slushy. Even with an axe, the “How Ridiculous” boys can’t crack this shell. How did it not? AHH! [ laughter ] AAH YES Look it’s actually! Look at that! [ laughter ] That is amazing! It is pretty amazing that the watermelon could survive an impact of over 100km per hour! So I went to find out more about the coating, called Line-X It’s a mess! The individual components are a mess, when it goes on it goes on as a big mess you saw me wear a spray suit. It’s a mess! And when you’re done, you get some really cool stuff. Line-X is made from two ingredients, A, and B. Inside of each of these is multiple things. But the main component of A is Diphenylmethane-4,4′-diisocyanate, or MDI for short. It’s very reactive due to these groups on the end. B is the poly. The simplest way I could explain it is that it is a plasticizer. The main component of B is alpha- (2-aminomethylethyl) -omega- (2-aminomethylethoxy) -poly (oxy (methyl-1,- 2- ethanediyl)) A long name for a long chain… molecule. In reality it would be many times longer than this. Now, I managed to convince Brin to let me mix the two ingredients the old fashioned way, with a stirr stick. That’s the A. I’m going to dump A and B in here and just mix them and see what happens. -Ready?
-Yup! Go for it! How quickly should they react? They are reacting right now! Did you see that? That is crazy! You can see there’s almost, like… I don’t know, smoke or something comming up there? It’s probably getting quite warm, I guess I could have gotten the thermometer out for you. Feel the bottom and you tell me. Yeah, that’s very hot. It’s like the bottom of a hot cup of coffee. What’s happening here is that the molecules of A and B are reacting to form long chains. Where they join, they form a urea group so the substance is called a polyurea. The structure of these chains is responsible for the properties of the coating. So it’s hard because it’s made of a tangled mess of molecular threads. But flexible because these threads can be stretched out and then snap back into place. Things you learn doing the reaction this way are that it’s rapid, only taking seconds to react. And it’s exothermic – a lot of heat is given off as these bonds form. But this ball of Line-X isn’t really useful for much, so how do you mix A and B to form an effective coating? Put them under really high pressure, force them together in a really small space. High temperature, high pressure, just ram them into each other. That essentially mixes them. And then they come out the end of the gun. So from the time they’re seperate components, they mix, out the gun, hit your target. Fraction of a second. This is where the magic happens Inside here, see?
Pull the trigger, out comes Line-X We decided to Line-X a piece of paper to see how strong the coating is As you can see it came out as a hot, high pressure liquid. -Ok, now..
-How hot is that? It’s quite warm, and because that’s an exothermic reaction it comes out at 150… But it keeps getting hotter and hotter. You can probably rip it right now. There you go, Ok. Those two chemicals just keep kinda looking for each other, or looking for something, so to speak. Until every last molecule has found a home or given up looking. That could take a day or more. But there’s plenty of opportunities to cross link right now. So that’s what it’s doing. And that’s where all the heat is coming from It’s already dry, I’m not going to get any on me. It’s already cooling back down. So we’ve done the vast majority of curing and cross linking… We’re getting there right? Yeah, it was harder. Now, we wait until some of this heat goes away. We’re probably getting a good amount of curing going on. It is really tough to rip at this point It’s strong stuff That tensile strength will get you! That high tensile strength is the same reason the Line-X coated watermelon bounces As it hits the ground the contents of the watermelon are squeezed out sideways. But the tangle of polyurea molecules pull together. Preventing the rind of the watermelon from deforming too much and breaking apart. So the watermelon bounces instead of smashing. This type of coating is now used in the walls of the Pentagon. Preventing exterior explosions from launching shrapnel into the building. The main cause of injury from explosions. And it’s used in bullet proof vests to contain bullet fragments that could cause serious injury. All of this is pretty incredible for a substance invented as a truck bed liner. Yeah, come on down! Bring your entire vehicle. Anything but your cat. We’ll Line-X it. Massive thanks to the guys over at the “How Ridiculous” YouTube Channel! You know, they are the ones that launched that basketball off the dam. That is my most popular video. And they have been doing some incredible experiments, like “Bowling Ball vs Axe”. So go subscribe to their channel. Go do it right now!

49 comments

  • Cold Canadian

    ??????Video thief lmao. You need to say what you say at the end at the very start. Your lame. ??????

    Reply
  • Michael Johnson

    Could that be incorporated into a spacesuit!?

    Reply
  • Eliusalmo1

    Spray on airplanes..

    Reply
  • BrownShoeBro

    Looks like this is what has inspired vibranium…

    Reply
  • Toxic Future

    Firearm companies will pay millions for this

    Reply
  • Stephen Vo

    So the outside coating is strong. The watermelon is still destroyed.

    Reply
  • Moss Fett Labs

    Paint a car with it….

    Reply
  • Zholla Mychalis

    that would make great helmets for the boys in uniform…and all people that ride wheeled vehicles…

    Reply
  • Fury Moore

    I so need that coding

    Reply
  • Oscar Vatrano

    just like a testicle!!!

    Reply
  • Peter Evans

    A great product, invented in Pretoria, South Africa in 1983, as a spray-on truck bed liner by Rhino Linings.

    Reply
  • Ben Official

    4:24 his outfit like ikea staff uniform lol

    Reply
  • Paul Power

    Spray this on my Car.

    Reply
  • Luka Popovic

    Like a basketball

    Reply
  • Luka Popovic

    It's good for helmets and stabproof vests

    Reply
  • zentex99

    Would be awasme to have this stuff mixed in, in a carbon frame, just enough to keep it from cracking!!!

    Reply
  • Wiktoria Heinz

    So coool!

    Reply
  • Pedro Garcia

    This reminds me of venom the villain from Spider-Man.

    Reply
  • mohammed asif

    What camera?

    Reply
  • Felix E. Ramos

    Were can i get this ?

    Reply
  • ZA

    How many litres does one need to coat a 737?

    Reply
  • Unis vers L'uni

    The birth of iron man.

    Reply
  • Skytyme

    I want to paint my truck with that

    Reply
  • SW Soh

    Is this bullet proof?

    Reply
  • Richard Deese

    How about Line-X coated space ships? Habitats? Cool stuff! Thanks! ????? ?????.

    Reply
  • SisyphusTwo

    Amazing

    Reply
  • James Copeland

    FYI: this substance was NOT invented for use as a truck bedliner. The inventor's goal was a UV and weather resistant coating for polyurethane foam insulation. Closed cell foam polyurethane insulation (think "Great Stuff" canned foam insulation) has been used for decades as a roof treatment for large industrial and commercial flat roofing. The problem is, it's doesn't withstand UV exposure or abrasion very well. The inventor's goal was a weatherproof topcoat system to be sprayed over the polyurethane foam efficiently over a large area, using similar equipment.

    Reply
  • Bruce Dodd

    Use it S Road surface

    Reply
  • juan Montenegro

    It's bulletproof?

    Reply
  • O Questionador

    Could you paint an airplane?

    Reply
  • Felix Cat

    What a fantastic visual demonstration of the incredible surface bond strength of Line-X!

    If it can survive the drop test followed by the repeated axe strikes, it's fair to say that it will make an extremely durable truck bed liner or other protective coating.

    Thank you for this informative, scientific, educational and entertaining video, which I greatly enjoyed!

    Reply
  • Goble

    Friends: What's your WiFi password?
    Me: 2:26

    Reply
  • AztecJoe FPV

    Coat a race drone frame

    Reply
  • LÉO JUNIOR

    ESSE MATERIAL aí CHAMA- SE GRAFENO NIOBIO DO BRASIL… QUE TANTAS NAÇÕES COBIÇA AS NOSSAS RIQUESAS MINERAIS NÓS BRASILEIROS TEMOS A MAIOR RESERVA DESSE MATERIAL DO PLANETA…????????????????

    Reply
  • Anwar Badsha

    Same apply vehicles tyres no puncture, no wearing and tear… Long life…

    Reply
  • Jeff Petersen

    Looked like spray on bed liner Wich can be applied thick enough to repell explosives and the shrapnel created by an explosion

    Reply
  • 종이 접기 하는펭귄

    wow

    Reply
  • theking8356

    flex seal

    Reply
  • Kirk Booth

    There's nothing like being exposed to hot isocyanate monomer ?

    Reply
  • scheggiaimpazzita61

    Pensate se si rivestisse un proiettile con questa lega

    Reply
  • Dennis Fox

    "Anything but your cat"

    Reply
  • Google Nutzer

    Where can i buy?

    Reply
  • Google Nutzer

    I want to coat my bicycle tires with that

    Reply
  • Mark Mercanti

    Hmm.. maybe with a little more research we can turn this into Spider-Man’s web shooters? That kind of tensile strength makes me wanna jump off some skyscrapers!

    Reply
  • Peppe Ddu

    If you coat the inner side of a tire, it should never get flat no matter where you drive it, spikes or whatever.

    Reply
  • jesus chavarria

    I.SEE DE VIDEO …..SORRY THIS IS NOTHING NEW GUYS…..A LOT PEOPLE IN MEXICO HAVE EXACTLY WATH YOU HAVE.TEH ONLI DIFERENTE IS.YOURS IS LIQUID AND NOT PROTECT FROM THE IMPACT.IT ONLY BOUNCE…THAT IS NO BIG DEAL BECAUSE THE MEXICAN WAY PROTECTS.68 %OF THE INSIDE AND U .IDEA. ONLY BOUNCE NO PROTECT…SORRY…….

    Reply
  • Massimiliano Gibin

    Inaltra merda inconpatibile da smaltire.

    Reply
  • Chakra Maharjan

    If it works on human body , will be fantastic !!!?

    Reply
  • Bruno Bison Dolza

    Fantastica invenzione..gli utilizzi sono pressoché infiniti..caschi , tute, carrozzerie auto , moto..TOP!!

    Reply
  • Snorpax

    incredible experiments like bowling ball vs axe, truly the forefront of science

    Reply

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