Barry : Welcome to the HellermannTyton ACADEMY, the workshop for the professionals.
You’ve been googling how to install heat shrink products ...
... and we´re here today to show you how to do that ...
... and in particular, how to use our V9500 Epoxy adhesive.
My Name´s Barry. Mark : And I´m Mark.
Barry : And we´re going to demonstrate the product to you. Not only do we say we demonstrate.
Right Mark, what do we need to do?
Mark : Barry can you pass me the applicator gun?
Barry : Here we go. So we need an applicator gun for this product?
Mark : So we do need an applicator gun for this product.
What this enables us to do is to get the adhesive out of the tube, ...
Barry : OK.
Mark : So this is a two part epoxy adhesive.
Barry : What do we mean by two part epoxy?
Mark : So we have a hardener in one side and a resin in the other and we have to mix them.
Barry : OK. Mark : So the way we do that is through a nozzle.
So we take the end off it’s really, really easy to use.
Barry : So what´s special about this nozzle?
Mark : So this nozzle allows ...
... both the hardener and resin to mix so when it comes out the end it’s already mixed.
Barry : So it goes in as two and comes out as one?
Mark : That’s correct yes.
Barry : Perfect. Mark : It’s very precise to use as well.
Barry : OK. Mark : So where you want to. Barry : How precise is it ?
Mark : Well I can demonstrate that to you Barry actually.
And it is a two part epoxy.
So what we mean by that Barry, like we said in the beginning, we’ve got a hardener in one side ... Barry : Yes.
Mark : ... and we have the resin in the other.
Barry : So this is a thermo-set product?
Mark : This is correct yes.
Barry : And we mean by thermo-set when you heat it, it cures and becomes a solid.
So that means it’s impervious to a lot of aerospace, defence chemicals and fluids.
Mark : Yes and when it’s actually applied Barry you can’t remove it.
Right, Barry, would you like to demonstrate how we´d use it on a cable. Barry : OK ...
... so we need a heat shrink boot which is supplied in a bag.
We then need to prepare the cable, Mark.
Mark : Indeed Barry. So what do we need to prepare the cable with.
Barry : We need our standard alcohol wipes as usual, ... Mark : OK.
Barry : ... as you’ve seen in our other videos, if not, check out the link below.
Mark : So this is a standard procedure ...
.. when applying heat shrink boots or heat shrink tubing is to make sure that your cable is ...
... always nice and clean and there’s no grease on it.
Barry : And as we have a back shell on the back of this one we need to clean the back shell as well ...
Mark : OK Barry. Barry : ... because that gets dirty.
So we’re ready.
Mark : Do we need to abrade the cable?
Barry : We do, yes.
So we abrade as we´ve done before.
Mark : So again we are abrading up and down Barry?
Barry : Yes, ...
... so we prevent the cracking when you bend the cable for your test procedure at the end.
Mark : Why are we showing this tomorrow, when it’s set Barry?
Barry : Because it take seven hours at room temperature ...
... or you can speed that process up by baking it in an oven at 85°.
Mark : Oh Right I see. So we don’t have to wait, ...
Barry : No. Mark : ... seven hours then.
Barry : No. Mark : We can actually speed this up Barry : Yes.
If you are in a production situation or environment then you could do that, so right. we’re prepared.
Mark : OK do we have to prepare the heat shrink boots as well, Barry? Barry : We do.
We follow the same process.
So again we abrade ...
... like so.
We’re ready. So dry wipe.
Mark : Yes and the dry wiping is to get rid of all this dust.
Barry : Correct. Yes we want to get rid of the debris.
Mark : So we don’t want that dust underneath the adhesive.
Barry : That’s right. So we have a prepared cable, prepared boot.
Mark : Brilliant. Barry : We’re ready.
Mark : OK . Right Barry I’ve already, ... Barry : ... shown how easy it is to use.
Mark : Shown how easy it is to use.
Barry : So we apply the adhesive to the inside edge.
Mark : So it´s only the inside edges Barry?
Barry : Yes. Mark : It’s not all the way through yes?
Barry : Because it bonds so well, ... Mark : Yes.
Barry : ...you only need a seal at either end.
It becomes an integral part of the cable harness ...
... OK?. Mark : OK, that's good.
So what´s the operating temperature of this Barry?
Barry : It’s minus 55°C to 150°C, + 150°C.
But we have tested it for the SAE Spec at over 200°C ...
Mark : ... and there was not detriment, ... Barry : No detrimental, ... Mark : ... to the product?
Barry : ... effect to the product.
So we also then apply it to the connector.
Mark : So what part of the connector are you putting that adhesive onto?
Barry : So as a connector is built it has the backshell entry, ...
Mark : Yes. Barry : ... where it connects to the connector, ...
... then we have a spring, this is a spring band adapter, so it has a spring band ...
Mark : Yes.
Barry : ... to allow you to fix the braid on so you get EMI continuity from end to end ...
Mark : I see, yes.
Barry : ... and then there’s a grove that designed into the back shell to take the lip of the boot.
Mark : But how do you know which side´s got the lip on the boot?
Barry : So the product has a “H” and a “J” marking so you can understand which ...
... way around it goes on, cause otherwise you can put it on upside down.
Mark : Oh right OK. Barry : OK and we’ll explain that.
We have another video which is showing that later.
Mark : It does show that OK Barry : So, ...
... we’re ready.
Mark : So again, Barry : Protective wear, ... Mark : Protective wear.
Barry : ... because we are using heat guns.
Mark : So what´s the heat gun set to this time Barry?
Barry : If it’s one of the HellermannTyton style like this it’s set to seven.
Mark : Yes.
Barry : That Seven means it’s in the region of 225°C to 250°C.
Mark : Ok, do we need a special nozzle on the end of it Barry?
Barry : We do yes for this allows us to do precise work, similar to the nozzle we have on here.
Mark : Right OK.
Barry : Like so and we´re ready to go.
Now the adhesive actually kicks off at around about 90°C.
Mark : Right. Barry : What I mean by kick off it will start to cure ... Mark : Yes.
Barry : ... so anything above that is a good point to be at because we know it’s going to cure.
So our temperature for the heat shrink product is around about 135°C.
Mark : Right. Barry : So we´re in a good position.
Mark : Just before you start that Barry what happens to this now?
Barry : So if you are doing numerous applications, ... Mark : Yes.
Barry : ... you can carry on using it, ... Mark : Yes.
Barry : ... if you’re not, then you can remove the nozzle, so once you’ve refitted it you ...
... can actually put it in the fridge and it will suspend the curing process ...
... ready for use tomorrow.
Mark : So that would be OK for use tomorrow? Barry : Yes.
Mark : What’s the shelf life of this product Barry?
Barry : The shelf life is 18 months and we guarantee, that we will send it out with a least 80% of its cure life still valid.
Mark : Oh right OK.
Barry : So we turn over the stock regularly. Mark : So if we are using lots of it then, ...
Barry : Yes. Mark : ... you know, it really wouldn’t matter, ...
Barry : No. Mark : ... because you’d use it all yes?
Barry : And we can supply it to you in bulk if you require it in larger tins ...
Mark : Oh right OK. Barry : ... or dosing units OK?
Mark : Yes. Barry : Answered your questions?
Mark : Yes. Barry : Right well let’s get cracking and shrink this product on.
So we supply ... over the top, ... Mark : Yes.
Barry : ... ready to fit.
So we recover the lip end.
Mark : What´s that end called again Barry Barry : The H end.
Mark : The H end, yes.
So why do we start at this end?
Barry : Because this is the fixed point. So once it’s located ...
... we know that the boot that’s recovering further down is in the right position.
Mark : Right OK.
Barry : So with this precise nozzle, it allows us to shrink quickly.
Mark : Yes.
So I can see there now Barry it’s started going into the groove on the connector ... Barry : Correct.
Mark : And there´s actually a lip inside that boot the same size, ... Barry : Yes.
Mark : ... which goes into that groove, yes. Barry : So it´s now located in the groove.
Has it recovered on the other side alright, Mark?
Mark : Yes.
So there’s lots of adhesive coming out, Barry.
Barry : Don’t worry about that, that’s a good thing.
Mark : Can we wipe, can we wipe some of that adhesive off? Barry : We can, yes.
Mark : Just to neaten it up.
Barry : OK, so when we get to this point ...
... if you pass me the alcohol wipe.
Mark : The alcohol wipe Barry, yeah? Barry : Yep.
Mark : Alcohol wipe.
Barry : What we can do is remove, like so.
Mark : Can you, cause we’ve got a small amount there on the connector.
Barry : Yep, we´ll do the same ...
... and then we can remove it from the connector as well, ...
... like so. We´ll just finish it off. Mark : Yes.
Barry : So what will happen we now have a witness line.
Mark : So by the witness line do you mean this is where I can see the adhesive that´s gone all the way round?
Barry : Correct. You have a visible bond. You can tell the adhesive has flowed.
Mark : Right, OK.
Barry : So there we go. So that’s now ready, to be left to cure.
Mark : Yes. Barry : Or we can put in the oven overnight - sorry for two hours - and then it will cure in that time at 85°C.
Mark : So this could be ready to go in two hours? Barry : Yes.
Mark : Or it can stay overnight? Barry : Correct.
Like so ... And here’s one I prepared earlier. So you can see we’ve got the bond it’s a perfect fit ...
Mark : Right. Barry : and while it’s in this state now, it’s set, ...
Mark : Yes, ... Barry : ... we can do our standard bend test around a standard.
Mark : So the standard bend test is to make sure it doesn’t crack, ...
Barry : Yes. Mark : ... at the joint?
Barry : So the diameter off this is six times the cable, so you pick the right size for your cable.
Mark : Right.
Barry : You just hold and bend. Mark : So it’s important to actually see, ...
Mark : ... that flow, ... there´s no cracks. Barry : Yes. Mark : ... of adhesive round to make sure that ...
Barry : ... then you can see ... Mark : ... when you do your bend test, there’s no cracks, brilliant.
Mark : Perfect. Barry : Another excellent job.
Mark : Excellent. Barry : OK ,Mark we don’t just promise, we prove.
No Mark, we prove ...
Perfect.
So if you liked our little demonstration please like us and subscribe to our channel.
I’m Barry ... Mark : ... and I’m Mark
Barry : ... and we’ll see you again soon. Mark : Bye.