Which Epoxy is Best for Plastic? Let's find out!

[Music] in a recent video we tested several top name-brand pock C's to glue together two pieces of steel the results were quite impressive with j-b weld original as well as DEF CON coming out on top with that being said plastic is far more difficult to glue it's far more difficult to get a good bond so we'll the jb weld original work as well as these other proxies in front of me that are specifically designed for plastic so today we're going to be testing jb weld original jb welds plastic Bhandar gorilla super glue plastic fusion and Loctite super glue ultra gel to determine which one of these epoxies is best for attaching a piece of plastic to a piece of steel okay I consulted an expert in the field of epoxies and they advised me when using plastics to be very careful with what type of solvent I use to clean the surface and they recommend I use isopropyl alcohol instead of using something like acetone because acetone can cause micro fractures in the plastic [Music] I've allowed these epoxies to drive for four days also these are 5/8 inch bolts and four inches in length I'll begin testing first using the gravitational force when it comes to applying the weight I want to make sure that I apply this weight right across the very end of this bolt and I do not want to be on the very far inside and I have to apply the weight at exactly the same location because when it comes to applying weight and as far as physics is concerned even just being off by an eighth of an inch makes a huge difference on the accuracy of this test we include the count of the chain this is right at 8 pounds [Music] okay with the weight of the chain this is about 11 pounds the only one left the only survivor left is jay-z well I have to admit I'm pretty surprised that jb weld outperformed these epoxies which are specifically designed for plastic according to each one of these products they're specifically designed for plastic to metal or plastic to wood or plastic to some other substance so let's take a close look at each one of these to see what caused the failure okay the epoxy did a very good job of sticking to the steel there's only one small exposed area of steel about 95 percent of the epoxy is still on the steel so the failure occurred from the epoxy not sticking to the plastic surface itself epoxy remained on the steel this super blue plastic fusion failed the fuse to the plastic itself you can see gorilla is still dangling by a thread of epoxy and what's very interesting to me as it looked like it looks to me like the gorilla sort of failed at both points it sort of came off of the steel and it came off of the plastic both so gorilla didn't do a very good job of sticking to either surface JB well plastic Bhandar actually bonded batter to the steel then to the plastic as you can see it clearly broke away from the plastic and remained on the steel JB well blenders competition by a pretty sizable margin by over a pound and so if you look at this it looks to me as though the jb weld failed up top did not stick to the plastic as well as the steel with that said again it didn't superior job at the other products as far as sticking the second test will be performing includes a twisting motion so I've got this set at three inch pounds again if we need foot-pounds we'll use a larger torque wrench what I want to avoid doing is I do not want to prevail a t'rul force I do not want to push down so I'm gonna try to be very careful to hold the weight in a balanced manner with with my left hand as I'm twisting to make sure that I do not cause the failure to occur because of a downward force 35 inch pounds okay GB well plastic bond it was the first to fill up 35 inch pounds 40 inch pounds [Music] okay gorilla was the second one to fail at 40 inch pounds 75 inch pounds 90 inch pounds [Music] hundred ten inch pounds [Music] 115 inch pounds the Loctite super glue ultra gel control held so good that the plastic actually broke before the epoxy did the super glue plastic fusion did a pretty good job but it did not actually fuse to the plastic as much as it did the steel gorilla once again sort of failed almost a 50/50 there's still quite a bit of epoxy on the steel but also there's some epoxy that's on the plastic bolt itself JV well plastic Bhandar it stuck to the steel better than it did the plastic and this this plastic binder also failed to really compete well against these other epoxies okay about half the epoxy remain on the bolt and about half the epoxy remained on the steel okay next up is the dead blow test we all know that anytime you have a plastic glued to something there's going to be vibration and impact so what we were measuring here is the ability of the epoxy to withstand a sudden blow this is extremely important this is probably the number one reason that most of the projects I use epoxies for this is the reason they fail so what we're going to be doing is taking the wrench we're going to put it over top and beyond the head of the bolt and we're just going to drop this wrench and allow it to impact 10 times and on the tenth impact we're going to move up and weight and we're gonna keep going until each one of these fails now each one of these wrenches has a larger diameter hole and each one of these wrenches weighs more as the wrench gets larger so I'm going to provide both the size as well as the weight of each of these wrenches and we're going to progress down through the line and see at what point each one of these fails [Music] [Music] this deadblow impact test was very revealing and it demonstrates exactly why you have to match the epoxy with the application what we noticed was that some of the epoxies they don't have nearly as much strength did an absolute terrific job at managing a deadblow impact because they have more elasticity in less strength so let's take a look at each one of these and see why they failed the Loctite super glue did a great job of sticking to the steel but failed to stick to the plastic the block tight super glue is just a very hard glue just very rigid and it just will not take any sort of vibration or impact compared to some of the more flexible epoxies super glue plastic fusion again it's just one of those very very rigid hard and flexible epoxies that's just not going to stand up to any sort of vibration gorilla did an amazing job in this one category because it is so flexible if you feel gorilla glue it's just not a very hard glue it stays very rubbery okay JB well plastic binder once again was disappointing it's a very hard epoxy that just doesn't seem to stick very well to plastic I remain very impressed with j-b weld original because it's not even specifically engineered or designed for plastic but it tied in first place on this test and as you can see it broke free from the plastic and remain glued very well to the metal but jb weld is one of the softer type epoxies when you compare it to like Devcon so it provides a really good mix between flexibility and strength the purpose of these final I wouldn't call the tests more of a demonstration is just to have an take a look at how much flexibility this epoxy has before it fails what I'm going to do is pull this bolt my direction and we're going to just see how far this will flex before it breaks free you see a lot of flexibility there it did not take much force at all for that to snap just does not have very much strength and doesn't seem to do very good job ponding I really learned a lot from these types of projects and what I learned today was if I need something that has a lot of flexibility I need to make sure that I choose the soft epoxy or it's gonna fail even though a hard epoxy may be ten times stronger if it's not going to take any sort of vibration or movement it's just gonna fail so I don't want to tell you which one of these epoxy I think is the best I really want you to form your own opinion but what I do want to say is I have at least a hundred people ask me to do this project and I just want to say thank you to each and every one of you who watch the video I really do pay a lot of attention to your comments I try to reply to as many of these comments as I can within the first two two or three hours after publishing a video anyway these projects take a lot of money and a lot of time so I hope I've earned a thumbs up and you guys also give me some good constructive feedback on how to make these videos better so I hope you'll leave a comment I like to interact with you guys I learn a lot and just want to say thank you very much for watching the video and look forward to seeing you next time [Music]

Channel: Project Farm

Views: 2,264,428

Keywords: Seafoam, additive, oil, crankcase, lock up, sea foam, lucas, marvel mystery oil, marvels, marvel, mystery oil, engine, believe, seefoam, Sea foam, Seefoam, See Foam, seafome, noisy lifter, does seafoam work, engine rebuild, smoke, vibration, shake, knock, carbon, carbon buildup, oil consumption, compression, lifter, sea, compression test, test, prolong, zmax, amsoil, synthetic, jb weld, jb, weld, cracked cylinder head, glue, dura lube, duralube, devcon, gorilla, gorilla glue, loctite

Id: djtKXkTqPUI

Length: 11min 39sec (699 seconds)

Published: Thu Aug 24 2017