Vacuum Resin Infusion Process: Fabricating a Composite Car Seat
ฝัง
- เผยแพร่เมื่อ 20 เม.ย. 2011
- www.smooth-on.com/Vacuum-Baggi... for more information about vacuum bagging.
The aftermarket auto parts industry has grown significantly over the past decade. Increased competition and short lead times have created a demand for faster production methods and techniques. Implementing Smooth-On's vacuum bagging silicone into a resin infusion production method has enabled manufacturers to shorten turn-around time by reducing labor required to tailor the bag and make a part. And because the silicone bag is reusable, the cost of consumables is minimized, if not eliminated.
Making Re-usable Vacuum Bags Offers Several Advantages;
* Reusable Bags Reduces Labor Costs Up To 90%
* Reusable Bags Can Be Used To Quickly Produce Many Parts
* Cured Silicone Rubber Resists Attack from Chemically Harsh Resins
* Heat Resistance up to 500°F / 260°C
* Non-hazardous; No Odor
* Reusable Bag Eliminates Traditional Bag Film Waste
"Smooth-On's vacuum bagging silicone has reduced our time to make a part by more than 50%."
Danny Dispenza - Owner
Nordan Composite Technology
Composite part specialist for Formula 1,
Grand Prix and Indy racing cars
Patchogue, NY USA
Prepare the Tool
2 coats of paste wax are applied to the tool. Allow to dry at room temperature. Wax is buffed to a glossy finish. 2 coats of PVA are applied to the tool. Allow to dry at room temperature.
EpoxAcoat Red: Surface Coat Resin
EpoxAcoat Red is dispensed and mixed thoroughly. 2 coats of EpoxAcoat Red are applied. Allow EpoxAcoat Red to partically cure for 1 hour. Vacuum host is attached to the underside of the tool and secured. Vacuum system, including resin trap, is ready for the infusion process. Glass matting is laid onto tacky surface coat. Vacuum bag made using Smooth-On's EZ-Spray Silicone 20. Pre-engineed channel secures bag to tool, allowing for 100% positive vacuum. Custom made vacuum bag conforms to the tool surface.
EpoxAmite 100 Laminating Epoxy
EpoxAmite is dispensed and mixed thorougly. Vacuum is turned on to start the infusion process. Clamp is removed from resin feed line. Resin flows into bag under vacuum. Resin thoroughly and uniformly saturates glass under vacuum. Bag translucency allows for visual monitoring of the rate of resin infusion. When glass matting is fully saturated, feed line is clamped off. Resin is allowed to fully cure under vacuum at room temperature.
Demold
Vacuum bag is removed. Silicone vacuum bag is ready for another cycle. Finished part is removed from tool. Vacuum bag produces a part that is precise, void free and has a perfectly smooth finish.
Make It Now! with Smooth-On
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Keep Out Of Reach Of Children
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Interesting...seeing the process all laid out really helps visualize it!
Indeed, in this situation a smooth finish was first and foremost. Saturation of the fibers is crucial to creating strength and on some cases, an overpressure due to having your resin supply higher than the tool can be problematic. There are some new fiber fabrics we have been looking at that seem to reduce this risk, but you are absolutely right in stating that the height of the resin container can have a great deal to do with the saturation rate of the fibers.
Very cool process. The silicone does not look like it was affected by the resin contact at all.
Not having to use release film or tapes or peel ply definately will help reduce costs.
Well done.
I love the silicon bag. I need this!
Simply AMAZING!
This is great! Taking a complex project and showing how to achieve it! Thanks for this
A respirator would be recommended when working with any epoxy resin in that application. The MSDS sheet - available on our website - has more info.
Hey Smooth-On people, this video omits a crucial step where you added strips of surface veil bridging the chopped strand mat to the internal and main vacuum channels. Being new to this technique, I was completely confused how the bag would manage to pull any suction whatsoever on the mold cavity & resin feed. I ended up watching both videos three times trying to figure out what I was missing. I didn't figure it out until I watched the wind-blade infusion video that did include the step.
Could you possibly add a quick little annotation to this video mentioning that step and its importance? I would suggest at 3:45, where the surface veil strips can be clearly seen as having been added.
Dry carbon refers to using prepreg material that already has resin infused in the material. Prepreg is lighter than VRI/RTM (resin transfer mold) but generally requires a autoclave to produce parts unless the prepreg is OoA (out of autoclave) prepreg which still requires a oven.
I worked in composite fiberglass for a few years. This is the exact same process we used to make Wind Blades for wind farms, save for the more efficient silicone bag you guys have. That would have made things so much simpler, and probably prevented a ton of manufacturer defects.
Thanks for watching, and don't forget to subscribe!
I'm considering this for making some fenders in both fiberglass and carbon fiber. It seems like this method would produce the most repeatable results.
@90Dajew In some cases it is not possible to spray due to space constraints, or lack of a machine. Spraying can be faster and produce a more even result in some cases.
Great video, thanks for sharing!
Thanks for watching!
great video, will try to make a silicone bag as well for my prototyping projects, can someone explain me why you dont have to use infusion mesh anymore? Is it possible to make a siliconebag with a brush instead of a spraygun?
The PVA Smooth-On manufacturers is sold under the name Ease Release 2125
very nice
That's cool!
Excellent!
Glad you liked it!
that is a really simple system. is there anything you need to add between the mold and the silicon to stick them together or do they just seal up from the vacuum?
nice the tools and method
Thanks for watching!
Hi, wondrous, your work is possible to learn like you
thats impressive
How many times can that bag be reused assuming no handling damage?
Hi, Whats the Vacuum pump capacity - in m3/hr rate used for this?
When you use this method (vacuum Resin infusion), then do the overbake to carbon fiber, can I name it "dry carbon"?
Prepare the Tool
2 coats of paste wax are applied to the tool. Allow to dry at room temperature. Wax is buffed to a glossy finish. 2 coats of PVA are applied to the tool. Allow to dry at room temperature
Can you reccomend me wich PVA solution can I use?
Thanks Mendy
nice job good tech, big up
Is EpoxAmite 101 toxic? Let's say I was painting it on to something with a paint brush, is a respirator needed?
Do you have an agent in Taiwan?請問在台灣你們有代理商嗎？
Im concerned with the fact that the resin bucket is placed higher than the part to be infused. This will create an overpressure and oversaturate the fibers. Is this something to do with a flaw in the bagging system? Or are the builders just looking for a smooth finish and not worrying about fiber content etc...
how long did the cure take?
where can I get a mold and for a composite bucket seat like that one?
Erik Lopez Out of your own two hands.
Whats the point of having a high quality inside finish, the bit you are never going to see...?
How many ounces was that chopped strand mat used for the seat?
+MegaherzZwei This was a Chomarat infusion media with chop strand / breather combo. More info can be found at www.chomarat.com/en/
Wich brand of Seat is this?
I wonder how well something like this would hold up in an enclave
Silicone bags are frequently used with ovens. They hold up just perfectly up to 500F.
Interesting process. But I have to say that those white fibers left on fiberglass seems to be a not perfect wet lamination.
When you normally wet fiberglass it disappears.
Any answer?
Thank you
Epoxy resin will not break down fiberglass the way a polyester or vinylester will.
@@smoothon Agree but it doesn't answer my question.
That is the B side of the cast part.
The part was made using a particular reinforcement that is composed of both glass fiber and breather cloth, which gets completely compressed and evenly saturated with the resin delivered via infusion under vacuum. The fibers are visible through the cured resin; not left on the surface.
@@smoothon Thank you
seat doesn't seem like it would be too strong... maybe they threw another layer or two of fabric on there before they bagged it.
Chopped strand mat is not usually used with epoxy resin. Why is this different ?
Andrzei Czajkowski it is it is used it's sewn together instead of glued because the binder is incompatible
jason mooney Hahahahaha. Rubbish. Stick to giving advice on things you know about Jason. Like Xbox probably.
you know i can get 5 rolls of bagging film for the cost of your silicone one. ill still have bags when that thing is long been destroyed. leave it to smooth on sucker born every day try a real resin company like fiberglass Hawaii or ranker not this repacked crap 200 bucks for polyester resin i get a 55 gallon barrel for 500 iso. 600 for surfboard. 1200 for epoxy clear for carbon. shop around people don't let scammers like this rob you
And you spend the other half of time saved making the bag!
it's reusable. so the time used making the bag only happens once.
請問在台灣你們有代理商嗎？ Do you have an agent in Taiwan?
Our distributors in Asia can be found here: www.smooth-on.com/distributor-regions/asia-indonesia/
no comment on this Smoothon?
5:10: Ford RS200?
Can vacuum resin infusion be done on a silicone mold? I really want to start vacuum bagging some props I make, but I'm a little worried about distortion. A hard mold for this particular prop is not possible. Maybe if I try it, I will just make my mold from a stiffer silicone. What are your thoughts?
Distortion is definitely a concern. I would recommend submitted a support ticket on www.smooth-on.com That way we can route your ticket to a vacuum bagging specialist.
在台灣有你們的代理商嗎。 Is there your agent in Taiwan?
Thanks for watching! A full distributor list can be found here: www.smooth-on.com/distributors/
What is lifespan of the bag? 10 or 100 cycles?
+Michał Michał it would depend on the formulation and speed of the resin
How to make silicon bag?
Any link?
Can you send us a tech ticket? Our team can help you - www.smooth-on.com/support/ticket/add/agree/
Is the resin pre heated ?
+MrZeddy100 no
How this mold is made?
Hi there! This is a good question for our tech support team, can you send them a ticket here? www.smooth-on.com/support/ticket/add/agree/ Thanks for watching!
How many times we can use vacuum silicone bag?
It depends on the type of resin used. Some resins are extremely chemically abrasive, but a platinum silicone bag offers superior resistance to these types of resins.
3 days
Que tipo de silicón utiliza
www.smooth-on.com/products/ez-spray-silicone-20/
What is the expected life span of the bag?
This would depend on the resin being cast. Epoxies are more aggressive than urethane resins.
@@smoothon can it be used with urathane resin?
I think this process unnecessary because of glass chopped strand mat, hand lay up enough for this materials.
Hand layup is not ideal for structurally critical pieces to get the optimal tension and compression strength. The vacuum infusion process allows you to get the ideal ratio of resin to fiber reinforcement, without the labor intensive process of rolling off excess resin. Also, when done properly, vacuum infusion has the benefit of practically eliminating the risk of hidden voids caused by some misbehaving unsaturated portion of chopped strand.
thanks for educating me!
also for people like me making parts in their garage the infusion process eliminates most of smell unlike hand layup.
What's pva!!!????
Polyvinyl Alcohol, a water soluble release agent.
and cheaper heavier products
N. Oldu
Нахуя снимать видео об укладки в матрицу, покажите как вы ее слепили