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acrylic vs. chemical reaction test (in Progress) - Page 2

post #11 of 64
Thread Starter 
If I'm not mistaken and it has been many years since my chemistry classes hydrofluoric acid does not react with some plastics. Thanks for the headsup on the how it reacts with glass because that is what I was going to use to contain the testing chemicals. The hydrofluoric acid I have is fairly dilute and was intended to etch very slick plastics (I think Teflon) for bonding I believe.

So far we have: hydrofluoric acid, Windex, 409, and bleach. I like the last three because they are readily available and commonly used for cleaning.

Keep them coming. It will be less time consuming to test them all at one time. I'm going to the shop a little later and will list what I have on hand when I get back.
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post #12 of 64
i ran iso thru my old thermaltake bigwater. i was noob and didnt know any better. guess what? within 24 hours there was a complete hole melted through the acryllic top and it was slowly dripping onto my sound card. it completely melted the inside of the acryllic pump as well. the block was the worst i still have the copper base of the block somewhere and it has completely melted acryllic from the top fused to it. so i believe it does ruin your acryllic items.
    
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post #13 of 64
Hydrofluoric acid is commonly found (in a weak solution) in craft stores. It is used for etching glass (the frosted look), hence it is stored in plastic bottles (not sure what kind, though).

In addition to the isopropyl alcohol, try some ethyl alcohol. You could use denatured alcohol (has a little methyl alcohol mixed in), or go with vodka or everclear.

Another thing that could affect plastics is UV light. Some plastics left in the sun tend to haze and get brittle. Since a lot of modders have UV lights in their rigs (some high brightness blue LEDs give off some UV also), this could be a concern.

Oil can also make acrylic brittle. We had a problem with some acrylic information boards that were installed with lubricated screws. The area around the screw turned brownish and crazed. Try some lubricating oil.
    
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post #14 of 64
Thread Starter 
How old was that set up? I do know that acrylic has gone through some revisions recently. One of the new properties is enhanced UV stability. I have some older acrylic some 20+ years so I will include this in my experiment. Thanks for posting your experience. You have given information to help make this experiment more legitimate. If you can think of more details or a picture of that block let me know.
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post #15 of 64
id say about 2 yaers ago on the bigwater kit. the iso ate right around the rubber gasket and completely ate the plastic. the regular tt block with the wave pattern inside of it.
    
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post #16 of 64
Thread Starter 
I've thinking about your Bigwater kit. A lot of people mistake cast resin or other acrylic-like plastics for acrylic. These have different chemical reactions. Would you please help me confirm that this is acrylic and not something else. I've mistaken some of these plastics myself.

Nice work JEK3. I need to find a UV lamp to see if the combination will have an affect. I had forgotten about oil lubricated screws. I always use beeswax to lubricate when working with acrylic.

This is the list I made at the shop:
WD-40
MEK
Acetone
Denatured Alcohol
XYLENE
Mineral Spirits
V.M.&P. Naptha
3 in 1 Oil
Etch-All etching creme (ammonium bifluoride)
Acrylic solvent
Rain-X
Teflon Silicon Lubricant

I wanted to do this test this weekend but my neck is killing me. Maybe, I will feel better tomorrow. I've got to lay down.

Keep the ideas coming while I'm resting up.
Edited by Gom Jabbar - 6/7/08 at 11:03am
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post #17 of 64
How about Vinegar? Actually, there's a bunch of different kinds. Maybe the most common like Cider/White/Wine variants?

There are those "Oxy-Clean" chemicals. I don't know if they would really have an effect or not though?

On the list I do not see the typical Isopropyl Alcohols (70/90+%).

Also in the test, maybe drop a penny in to simulate the effects of copper??

Just crap that came to my head.
Edited by Indignity - 6/7/08 at 2:33pm
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post #18 of 64
here is a link to the block that almost all the tt kits use. it is listed as being acryllic. if they arent really im gonna sue
    
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post #19 of 64
I know finger nail polish remover (acetone) will destroy acrylic. I used some this one time to clean my acrylic.... uh thingy, and it totally made it hazy, then it started to crack all over, then just started to crumble. Pretty weird. All in about 10 minutes. lol.
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post #20 of 64
Bring on the acetone. This should be interesting.
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