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@  ShadowMan024 : (24 September 2016 - 06:54 PM)

But can you breathe in space?

@  Nevermore : (24 September 2016 - 04:26 PM)

I'M BATMAN!

@  TheMightyMol... : (24 September 2016 - 03:59 PM)

I AM OPTIMUS PRIME

@  Rycochet : (24 September 2016 - 03:47 PM)

That Sam-I-am! That Sam-I-am! I do not like that Sam-I-am!

@  Steevy Maximus : (24 September 2016 - 03:37 PM)

I am...MEGATRON! RAAAAAAAR!!

@  ShadowMan024 : (24 September 2016 - 01:02 PM)

I. AM. IRON MAN.

@  Telly : (24 September 2016 - 12:56 PM)

i am the i am i am the i am

@  ▲ndrusi : (24 September 2016 - 10:51 AM)

I am Sam. Sam-I-Am.

@  TheMightyMol... : (24 September 2016 - 07:54 AM)

I am the walrus! Googoogajoob!

@  Bass X0 : (24 September 2016 - 05:18 AM)

I am Sinistar! Beware, I live! RUN! RUN! RUN!

@  Waspinator : (24 September 2016 - 05:04 AM)

EMPTY EYES, NEVER BLINKING! ARMORED SCALES, BUT NEVER SINKING!

@  Telly : (23 September 2016 - 11:09 PM)

you are what we TELL you you are!

@  ▲ndrusi : (23 September 2016 - 05:05 PM)

I am more than a robot! Die, Wily!

@  MEDdMI : (23 September 2016 - 01:14 PM)

*murgle murgle murgle*

@  TheMightyMol... : (23 September 2016 - 12:58 PM)

I am more than a fish! I am more than a man!

@  ShadowMan024 : (23 September 2016 - 10:36 AM)

I'm Aqua Man, but you can call me handsome!

@  LBD "Nyt... : (23 September 2016 - 06:04 AM)

Oh, all the talk about GNR Mega Man names and such, and I thought maybe people were talking about me for a sec. XP

@  Whirl Maximus : (23 September 2016 - 04:42 AM)

Transformers 5 filmed in the city closest to me and nobody informed me? And here I was wasting my Saturday dogsitting for a mate!

@  Robowang : (22 September 2016 - 07:36 PM)

NIPPLY PORPOOOOOOISE

@  Superomegaprime : (22 September 2016 - 06:49 PM)

opps, wrong part!

@  Superomegaprime : (22 September 2016 - 06:48 PM)

youtube

@  Xellos : (22 September 2016 - 05:25 PM)

Neon Tiger's stage music from Mega Man X3 was also pretty much straight from Guns 'N Roses' "My Michelle". X5 also renamed all the Mavericks as references to GNR.

@  Dracula : (22 September 2016 - 02:26 PM)

the band name is Journey btw.

@  Bass X0 : (22 September 2016 - 02:25 PM)

i never heard Journey before today (BBC R2 Ken Bruce Show) but recognised it immediately.

@  ShadowMan024 : (22 September 2016 - 02:15 PM)

Shade Man's theme sounds like a mariachi song.

@  ShadowMan024 : (22 September 2016 - 02:13 PM)

Yeah. Lots of Mega Man songs are copied from bigger songs.

@  Bass X0 : (22 September 2016 - 12:50 PM)

Did Capcom copy Elec Man's stage theme from Journey by Faithfully?

@  TheMightyMol... : (22 September 2016 - 11:33 AM)

Things that make you go "blergh".

@  ShadowMan024 : (22 September 2016 - 10:54 AM)

why would you post that

@  Dracula : (22 September 2016 - 10:20 AM)

Robowang I'm glad I can always count on you to fulfill my quota of gross body information in the shoutbox

@  Robowang : (22 September 2016 - 07:07 AM)

Carving off genital warts with an x-acto knife is more fun than I assumed. Thank goodness for Anbesol, though.

@  Whirl Maximus : (22 September 2016 - 05:59 AM)

Problem solved, the nests dying off from natural causes. That's how you do it with ALL lawsuits, DELAY!

@  Paladin : (21 September 2016 - 04:03 PM)

your firearms are USELESS against them!!!

@  Bass X0 : (21 September 2016 - 12:05 PM)

bees. my god.

@  wonko the sane? : (21 September 2016 - 11:03 AM)

bees are revolutionary force, wasps are mecernaries.

@  Rycochet : (21 September 2016 - 09:36 AM)

But wasps can survive stinging, it's why they're such b*****ds and will fly straight at you. Buzzy buzzy bees on the other hand...

@  Whirl Maximus : (21 September 2016 - 09:30 AM)

I was stung by a wasp yesterday and just got a letter from his family solicitor for manslaughter

@  Robowang : (21 September 2016 - 08:45 AM)

Don't care. Not my car.

@  TheMightyMol... : (21 September 2016 - 08:41 AM)

Did you remember to put down a tarp first this time?

@  Robowang : (21 September 2016 - 08:38 AM)

There's a dead hooker in the trunk!

@  Broadside : (21 September 2016 - 07:03 AM)

There are worse mistakes to make!

@  ▲ndrusi : (21 September 2016 - 07:01 AM)

Ian saw that "see you turn into a Chris McFeely" post, didn't get the reference, and took it seriously.

@  Broadside : (21 September 2016 - 06:48 AM)

Action Man really ramped up the awful puns this issue. Maybe after McFeely died last issue, Ian took on his mantle?

@  Telly : (20 September 2016 - 05:29 PM)

been thinking of getting a soundbar. but what exactly do they do? are they like home theater systems but without satellite speakers?

@  MEDdMI : (20 September 2016 - 12:52 PM)

These days, there's Craig's List. (use at your own risk)

@  Bass X0 : (20 September 2016 - 12:46 PM)

I just remembered that the Marvel UK Transformers comic printed the full address of kids wanting to trade with other fans. Surely that wouldn't be allowed today?

@  ShadowMan024 : (20 September 2016 - 12:32 PM)

MONTY PYTHON'S FLYING CIRCUS-S-S-S-S!

@  Robowang : (20 September 2016 - 12:18 PM)

T

@  Pennpenn : (20 September 2016 - 10:27 AM)

ITS!

@  RichardT1977 : (20 September 2016 - 10:21 AM)

it


Photo
- - - - -

Yellowing cured!


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91 replies to this topic

#21 Bass X0

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Posted 08 December 2008 - 12:22 PM

Dumb Robot: You will doubtless seek life for your yellowed toys. But *AK* will they want life if -- if it comes like this? Hydrogen Peroxide affects no type of toy in the same way. What I ask -- -- will it do to Transformers?

Grimlock: Er... Make us whiter, make us brighter!

Dumb Robot: Ha-Ha *GGN* Yes, yes. It will do that all right. But what else? Will it eat you from the inside out? Will it distort your bodies? --Or will it make you crumble like my friends you encountered? Will your toys thank you for saving them -- or curse you? *UHH* Take me for example. I was suffering from a wasting disease, my color slowly decaying. It was long , drawn out but at least I'd reach the storage tub I so *URR* badly craved. Then they cured me. Only they DIDN'T cure me! Uh-uh! They brought me back to white so I could yellow again -- this time feeling every plastic part break down and fade. All thanks to Hydrogen Peroxide! It's said *UHN* we guard against the Hydrogen Peroxide jealously. Not so. We guard others AGAINST Hydrogen Peroxide!

Edited by Bass X0, 08 December 2008 - 02:00 PM.

Just because you can't win doesn't mean you stop working.


#22 Autobus Prime

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Posted 08 December 2008 - 12:55 PM

Folks:

Warning! Science.

Warning 2! Amateur. (I'm trained as Wheeljack, not Quickmix.)

You have been warned. Now prepare for the geekstorm.

WHOA.

This is awesome to the max. UV-catalyzed peroxide bleaching! Now we need to figure out what's happening.

I think I've got a partial theory.

Photooxidation creates chains of alternating single-double carbon bonds in the hydrocarbon molecules - the conjugated unsaturation mentioned in the NES article below. This forms chromophores in the molecules, color-causing regions, turning the molecules into dyes. Chromophores formed by conjugated systems...are yellow!

The hydrogen peroxide bleaches these by breaking double bonds and forming an epoxide group - an oxygen atom bonded to two adjacent carbons, which remain bonded to each other by a single bond. This turns the chromophores colorless.

Now, here's what I'm wondering -

-where in the ABS structure is the chromophore forming? The polybutadiene chain or the cross-chains?

-brittleness (due to UV-induced cross-linking) and yellowing seem to be separate modes of deterioration. What effect might this relatively fast UV-catalyzed oxidation have on cross-linking?

-how does the UV light catalyze this bleaching, if indeed it is doing that?

There's a LOT of papers on photooxidation and photodegradation of polymers! I have been browsing abstracts, because I don't want to buy the actual papers. If anybody has access to polymer science journals, it would be well worth a look. I think there is a neat puzzle here for the chemists here to figure out! I know you're out there.

One thing I can suggest from an engineering POV is a test for brittleness. Take some identical parts and treat them, then do a tension test to see how easily they break, and examine the broken ends for signs of embrittlement. Compare yellowed parts, bleached yellowed parts, and unbleached, unyellowed parts. I think a good source would be a scrap computer case; they're flat, so you could get good test specimens, and they're usually ABS.

Nerdy excitement! Let it spill into the streets.

Refs:

http://www.vintageco...hp/archives/189

http://en.wikipedia....njugated_system

http://en.wikipedia....iki/Chromophore

http://mysite.du.edu.../phys/perox.htm

Edited by Autobus Prime, 08 December 2008 - 12:58 PM.





#23 G.B.Blackrock

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Posted 08 December 2008 - 01:48 PM

QUOTE(Bass X0 @ Dec 8 2008, 09:22 AM) <{POST_SNAPBACK}>
You will doubtless seek life for your yellowed toys. But *AK* will they want life if -- if it comes like this? Hydrogen Peroxide affects no type of toy in the same way. What I ask -- -- will it do to Transformers?

Er... Make us whiter, make us brighter!

Ha-Ha *GGN* Yes, yes. It will do that all right. But what else? Will it eat you from the inside out? Will it distort your bodies? --Or will it make you crumble like my friends you encountered? Will your toys thank you for saving them -- or curse you?

Bass X0 wins the thread!

#24 Treadshot 2.0

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Posted 08 December 2008 - 03:39 PM

This should be frontpaged. It's some of the biggest news in toy collecting fandom.

#25 G.B.Blackrock

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Posted 08 December 2008 - 04:24 PM

QUOTE(Treadshot 2.0 @ Dec 8 2008, 12:39 PM) <{POST_SNAPBACK}>
This should be frontpaged. It's some of the biggest news in toy collecting fandom.

Would need some heavy "we're still trying to determine if this method is safe" disclaimers....

#26 lonegamer8

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Posted 08 December 2008 - 04:34 PM

QUOTE(G.B.Blackrock @ Dec 8 2008, 01:24 PM) <{POST_SNAPBACK}>
QUOTE(Treadshot 2.0 @ Dec 8 2008, 12:39 PM) <{POST_SNAPBACK}>
This should be frontpaged. It's some of the biggest news in toy collecting fandom.

Would need some heavy "we're still trying to determine if this method is safe" disclaimers....

Too true.

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#27 Esser-Z

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Posted 08 December 2008 - 04:55 PM

I'll be watching this. Mostly with my science nerd side, for now (don't have any yellowed toys, yet). It's tentatively really cool.

#28 Spark

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Posted 08 December 2008 - 05:05 PM

Hmm... I've got an Ultra Magnus and a bunch of Seacons and Micromasters that need this, but I do think we need some time trials before this becomes the standard.

I feel like we're being the toy version of the FDA.
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#29 Fender Bender

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Posted 08 December 2008 - 09:08 PM

QUOTE(Spark @ Dec 8 2008, 06:05 PM) <{POST_SNAPBACK}>
Hmm... I've got an Ultra Magnus and a bunch of Seacons and Micromasters that need this, but I do think we need some time trials before this becomes the standard.

I feel like we're being the toy version of the FDA.


Well, we are so to speak. We are all AFRAID (Action Figure Research And Improvement Developers)













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#30 Cat

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Posted 08 December 2008 - 11:27 PM

So, I just got back from the dentists.

I got my teeth whitened. They used some new light procedure, cost a grand.

BUT I have a little kit, so I can periodically top my teeth off as needed. At the moment, they're now dazzling white.

I'm curious about what effect, if any, this gel would have on a TF.

Thoughts?

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#31 Tigerpaw28

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Posted 09 December 2008 - 01:41 AM

QUOTE(Mecha KJ @ Dec 8 2008, 11:27 PM) <{POST_SNAPBACK}>
So, I just got back from the dentists.

I got my teeth whitened. They used some new light procedure, cost a grand.

BUT I have a little kit, so I can periodically top my teeth off as needed. At the moment, they're now dazzling white.

I'm curious about what effect, if any, this gel would have on a TF.

Thoughts?


I think you just hit the nail on the head. If I'm not mistaken, that gel contains hydrogen peroxide and as you said, it's being activated by the light.

That's pretty similar to the process that's the subject of this thread. This would be a good starting point to find out what, exactly, is happening to the plastic. Which is what I will do tomorrow.

Edited by Tigerpaw28, 09 December 2008 - 01:42 AM.

-Tigerpaw28


#32 Bass X0

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Posted 09 December 2008 - 04:24 AM

QUOTE
I got my teeth whitened. They used some new light procedure, cost a grand.


was it worth it?

white teeth is something desirable but a grand goes a long way spent on other stuff.

Just because you can't win doesn't mean you stop working.


#33 Cat

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Posted 09 December 2008 - 06:27 AM

QUOTE(Bass X0 @ Dec 9 2008, 04:24 AM) <{POST_SNAPBACK}>
QUOTE
I got my teeth whitened. They used some new light procedure, cost a grand.


was it worth it?

white teeth is something desirable but a grand goes a long way spent on other stuff.


Yes, it was worth it. I'm in agony because it's aggravated the nerve endings in my teeth, but I'm absolutely thrilled with the results.


If it helps find a cure for (solemn voice) TF yellowing, then no price was too high........


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#34 Silent_Magnus

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Posted 09 December 2008 - 08:04 AM

I wonder if this video is appropriate for this topic.

link

(if you want to, you can see Darth Vader as a yellowed toy, and the fire as Hydrogen Peroxide)

Edited by Silent_Magnus, 09 December 2008 - 08:15 AM.



#35 (Deactivated) Domon Kasshu

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Posted 09 December 2008 - 08:21 AM

I saw this story on the front page, so I thought I might share a few images of using hydrogen peroxide on a Transformer as well.

This is the original knee joint on a Smokescreen Alternator: Original Knee Assembly

The joint was treated with overrun of store bought hydrogen peroxide from a q-tip over the course of a few days(it was actually being used to remove the racing detail on the car), without being placed in sunlight for extended periods of time.

Picture One
Picture Two
Picture Three

The leg pretty much crumbled in my hands when I was trying to work with it later. I'd especially be cautious with thin plastic and areas where joints are moved frequently... but I can't say I'd recommend doing this at all.

#36 Autobus Prime

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Posted 09 December 2008 - 09:06 AM

Folks:

I feel I should also point this out...and I think there ought to be more emphasis on safety in the news article. A nice white Fort Max does you no good if you can't see it.

MSDS for H202, 20% - 40%:

http://msds.fmc.com/...5-MSDS_US-E.pdf

Please take note that these concentrations of hydrogen peroxide...

-Are corrosive to eyes, nose, throat, lungs, and GI tract,

-May cause corneal damage or blindness if splashed in eyes, especially if not rinsed away,

-Reacts quickly with wool, cotton, and leather - do not wear these materials when working with these concentrations of H2O2,

-May generate large amounts of gas

-May concentrate by water evaporation and self-ignite if spilled on combustible materials and allowed to dry. Combustible materials exposed to hydrogen peroxide should be submerged or rinsed with lots of water to ensure all peroxide residue has been removed.

This is not the fizzy 3% stuff from the drugstore!

DK: That's interesting. It almost looks like a GPS break in the photo - is it similar? Brittle fracture, dust and shards?

What concentration were you using and how long did it remain on the parts? Anybody know if that's PVC or ABS?









#37 Galenraff

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Posted 09 December 2008 - 10:05 AM

This sounds interesting, but I hope it's not the new "dishwasher dusting."

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#38 JRSBill

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Posted 09 December 2008 - 02:34 PM

We use 35% here at the shop for doing various cleanings.

If you don't wear gloves and get it on yours hands, they will instantly turn white and BURN. That's not even if it gets in a cut, then it is even worse.

As for brittleness, SCH80 PVC pipe is grey and it will completely remove the color from it. After a few years of using liquid with the H202, the SCH80 pipe does become brittle and can shatter.

Toys are probably around SCH1. If it weakens SCH80 piping after a few years, I can only imagine what will happen to toys.

G1 stuff might hold up better than the newer stuff. I'm sure Animated Ratchet soaked in that stuff would just fall apart if left exposed to the stuff too long.

#39 Autobus Prime

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Posted 09 December 2008 - 03:41 PM

QUOTE(JRSBill @ Dec 9 2008, 02:34 PM) <{POST_SNAPBACK}>
We use 35% here at the shop for doing various cleanings.

If you don't wear gloves and get it on yours hands, they will instantly turn white and BURN. That's not even if it gets in a cut, then it is even worse.

As for brittleness, SCH80 PVC pipe is grey and it will completely remove the color from it. After a few years of using liquid with the H202, the SCH80 pipe does become brittle and can shatter.

Toys are probably around SCH1. If it weakens SCH80 piping after a few years, I can only imagine what will happen to toys.

G1 stuff might hold up better than the newer stuff. I'm sure Animated Ratchet soaked in that stuff would just fall apart if left exposed to the stuff too long.


JB:

Schedule 80 is actually a dimensional schedule (wall thickness etc) rather than a material spec...it's thicker than Sch 40, but the resin et cetera isn't necessarily better.

The point about safety is REALLY good and needs to be repeated, or sooner or later somebody is going to hurt themselves.

I am wondering now whether PVC itself is more prone to damage than ABS. Is this pipe in contact with H202 flows continuously for several years, or is it being used to clean the pipes? How often?




#40 Cat

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Posted 09 December 2008 - 09:46 PM

The stuff I got for my teeth is 22%.

That seems like a reasonable concentration to experiment with.

Now I just need to buy a junker off Ebay, I don't have anyone I'm willing to sacrfice...
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