World Web shooter shop class - Part 1

[Bdude101]

To White Widow, what is the tackifying resin mixed with the polyisoprene?
Do you think we should use Synthetic polyisoprene rather than natural polyisoprene?

 

[MSaleem]

Here is my design, but is it possible to get refillable aersol cans, or get empty aersol cans that you can fill?

 

[jamisicus6]

Diagram of the Ejector Plate (using nine nozzles as an example, in theory you can do more). The Positive nozzles are soldered to the cog, which is an airtight seal. Just to be clear, the cog should have some sort of sealant on the external and internal side of it to prevent a loss of pressure and possible sticking. That being said, it'll get stuck every so often anyway because the nozzles are likely to get clogged. If this happens then run it with a pure acetone cartridge to unblock it.

Any more electrical stuff you need, give me a call. I'm damned good at it.

 

[spidey44]

you need two power supplies one high voltage for electrospinning and a battery for the motor the high voltage supply, I don't think is has enough amperage to power the motor, but it seems like a good design.

 

[jamisicus6]

If you have them both from the same source (say a 9V battery), you can use a step up transformer to turn it to the high voltage you need for the electrospinning. Or, like you say, have two separate sources.

 

[Iron_spider]

Nice design. Couldn't that help with cohesion to? With the positive and negative charges attracting each other?

Wait... I think you just solved the problem I've been thinking about. Electrospinning needs a collector plate, so maybe the negatively charged stream could act as one? Since it's in the middle, all of the other strands could be attracted to the center making a nice, tight strand... Awesome. Could that work?

 

[jamisicus6]

Yes, when the threads are fired, they'll all (in theory) be attracted inwards to the central thread by both electromagnetic attraction AND the angular force applied by the rotation of the plate. The last one is difficult to explain, but it works in the same way as spinning a skipping rope in large circles very fast to get the multiple looping effect. Plus you can angle the needles so they point inwards if needs be as well.

Electrospinning doesn't necessarily need a collector plate. If you make the positive charge large enough it'll do it regardless. The collector plate is commonly just to maximise the difference in charge between the stream and the contact surface.

 

[Iron_spider]

What if, instead of just one hole in the middle, you had a series of negatively charged holes in a circle. Maybe the same amount as on the outside? That way you get two wraps. The negative wraps around itself and the positive wraps around the negative.

Ah, okay good. The collector plate thing has been bugging me so much. Good to be sure it isn't necessary. Thanks.

 

[jamisicus6]

What if, instead of just one hole in the middle, you had a series of negatively charged holes in a circle. Maybe the same amount as on the outside? That way you get two wraps. The negative wraps around itself and the positive wraps around the negative.

Edit: Ah, okay good. The collector plate thing has been bugging me so much. Good to be sure it isn't necessary. Thanks.

You're likely to get the negative strands repelling each other and attracting to the positives, ruining the strand uniformity. Sure, it'd give you more thickness in the strands, but you'd be sacrificing an awful lot of strength because you'd get more air spaces. If you wanted to be really clever you could have a three stage one which goes Positive negative positive, with one single positive centre strand, but then the wiring gets overly complicated.

 

[Iron_spider]

Alright then. Do you mind if I pm you if I have any questions concerning electrical stuff?

 

[jamisicus6]

Alright then. Do you mind if I pm you if I have any questions concerning electrical stuff?

Sure, go for it. I'm in the UK and I still go to school, but I'll be able to answer within 24 hours no matter what.

 

[Iron_spider]

Thanks! By the way (and this goes as a notice to everyone, especially people who just joined the project), we have a site that we log our information on, in case you want to contribute there too. Here's the link: http://realwebtech.webs.com/. You can post ideas, pictures, videos, and whatnot.

 

[MSaleem]

Where can i fill an aerosol can? I was thinking about filling it with the fluid and then attaching tube to the nozzle. Can anyone answer???

 

[ng.samuel]

Just two quick thoughts.

1) Jamisicus: That seems like it could work if you made some adjustments. The repulsion from the positively charged streams woud quite likely mean that the negatively charged one could attract one or two of the streams but the rest would separate unless they are at an angle; you need to design it with just a few more negatively charged streams, it is best if they are arranged in an interlocking manner.

2)Webs
You know how the streams separate at one point? This could be used to our advantage. I am suggesting using multiple conductive membrane buttons separated by a thin, elastic films. If you use a the first layer of the membrane for power source of the high voltage electrospinner, assuming that the distance of the stream-separation is based on voltage, other layers can be used to reduce the voltage incrementally. If the distance of the stream isn't reliant on that, then please inform me, it could still work but in a different way.

Also, access to the other layers could be restricted in some way, allowing for just a stream of fluid to be released.

 

[White_widow]

Sup Jam. Welcome to the forum. I think you'd like to talk to TheWeb or Wadaltmon. They seem your speed.

To dude: As I said before, please keep the formula questions on the formula page, and the shooter stuff on the shooter page. That being said, PVA is the tackifier resin. PVA is what they use due to tackiness in cement. It has a better supporting stickiness and is cohesive enough that it beats out steel in construction. If it cracks, the strain falls into pva fibers that have adhered to the stone in creation.

 

[Bdude101]

Hey jamisicus6 if I could pm u 2 that would be great. Yeah, the idea of having a central positive strand and a few negatively charged ones and then somemore positively charged ones is genius. And yes I will keep my ideas on the shooter only here and the webbing elsewhere.

 

[White_widow]

I just ordered a few solenoid valves, and I think I'll be making my modified maximus fuel tank this week. I will probably not complete my formula before my two year mission. I'll start working again on the formula when I become a chemist. My only goal right now is to make a shooter that can fire a material with the viscosity of honey or syrup. Water is no problem.

 

[SUP]

http://i41.photobucket.com/albums/e288/kokigoran/ancon03.jpg

 

[White_widow]

did you draw that?

 

[Milesmorales9]

I have a really simple idea, and I am new here, so please help me. Sebacoyl Chloride and krazy glue in one compartment, and hexamethlenediamine in another. They are pressurized with Co2 from a electric pump. Tubes from each compartment lead to a small turbine pump that is activated when you push the trigger. The turbine then cold draws the nylon through small holes in the nozzle. Since the liquid can't pass,only the nylon comes out and the chemical reaction keeps on making more nylon 6-10 until all the fluid runs out. It would probably make around 200 feet of webbing, and this would all fit in a large watch. Could you please tell me the current formula of your web shooters? Good luck.

 

[Milesmorales9]

Wait, so you guys already made a functional web formula! Or are you still working on it. If you are done with the formula, can you swing on it? I am only ten, but I want to be a engineer when I grow up, so I could help with the shooters, but not that much with the formula.

 

[White_widow]

Sup miles.

The hexamethylene diamine is the way to produce nylon 6,6 or 6,10. ( i forget which) the Adding superglue will make it too brittle, and that nylon will be coated in acid.

We have a couple formulas under investigation. One is cellulose acetate with a bond to contact cement and polyvinyl alcohol. After being stuck on this for a while, we are trying to determine how Polyvinyl alcohol construction fibers are produced, as we now have a method to extrude the fluid. You are coming in at the near ending of this project (well for the shooter anyway. The formula can always be messed with)

Welcome aboard.

and by the way, swinging is a dirty word here. It's dangerous.

 

[MSaleem]

Hey everyone, here is my design for the web shooter, plz give me suggestions

http://www.mediafire.com/?4t45jj9obws9sb2

 

[Milesmorales9]

Ok.

 

[Bdude101]

Yeah miles, right now we have an electrospinning idea which is pretty much putting an electric wire through a spinneret. If you have read above then you now about the electromagnetic connections that will spin the web together although we might be switching to dry-spinning because the PVA is dissolved in water and doesn't dissolve as fast as acetone which is going to be hard to figure out. Um yeah.