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 Thermal interface material, Discussions on thermal pad/paste/grease

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sHawTY
post Feb 29 2008, 08:32 PM

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QUOTE(IcEMoCHa @ Feb 29 2008, 08:00 PM)
nail polish remover does the job just fine... its cheap and easy to get too.. smile.gif
Please don't use Nail Polish Remover.
It is not adviseable to use it.

I'm not sure why but i've seen a lot of sifu's saying that.
I shall call my ceefoo [ laugh.gif ] to clarify.
a1098113
post Feb 29 2008, 10:41 PM

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noooo nail polish remover... its acetone i think... dont use it


Added on February 29, 2008, 10:43 pm
QUOTE(tomatos @ Feb 29 2008, 05:36 PM)
70% the best?

Shoudln't more pure be better like lets say >90%.
*
well we can but alcohol at that percentage is very volatile... so if u mishandle it it can either explode or do some nasty damage(dryness) to your fingers due to high end evaporation..

This post has been edited by a1098113: Feb 29 2008, 10:43 PM
AMDAthlon
post Mar 1 2008, 05:28 PM

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Btw,does thinner will do the job well if i cleaning thermal pads?
a1098113
post Mar 1 2008, 05:37 PM

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i would still prefer you to use alcoholic swabs which can be bought in pharmacies..

thinner is not good coz its toxic when inhaled.. due to its chemical compositions. So a lot of precautions have to be taken
tomatos
post Mar 1 2008, 06:43 PM

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QUOTE(a1098113 @ Feb 29 2008, 10:41 PM)
noooo nail polish remover... its acetone i think... dont use it


Added on February 29, 2008, 10:43 pm

well we can but alcohol at that percentage is very volatile... so if u mishandle it it can either explode or do some nasty damage(dryness) to your fingers due to high end evaporation..
*
Thats where you are very wrong there. Alcohol has high volatility makes alcohol tend to vapourise. Alcohol at high percentage is used as antiseptic and almost pure alcohol(>99%) is used as a cleaning agent. All alcohol burns and ingestion of above 50% alcohol would be enough to kill.
a1098113
post Mar 1 2008, 06:52 PM

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are you kidding me? alcohol at high percentages is volatile and dangerous to humans if inhaled. Yes, alcohol is used as antiseptics but more often its normally at 70% concentration, aka, isopyril alcohol. Alcohol vaporizing has nothing to do with its reactive behavior

Indigestion of alcohol, depends, if u drink in clubs and u had bacardi 151 or absenth, the % of alcohol is at 70%+, so its really on the chemical composition of how the alcohol is derived.
tomatos
post Mar 1 2008, 06:58 PM

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QUOTE(a1098113 @ Mar 1 2008, 06:52 PM)
are you kidding me? alcohol at high percentages is volatile and dangerous to humans if inhaled. Yes, alcohol is used as antiseptics but more often its normally at 70% concentration, aka, isopyril alcohol. Alcohol vaporizing has nothing to do with its reactive behavior

Indigestion of alcohol, depends, if u drink in clubs and u had bacardi 151 or absenth, the % of alcohol is at 70%+, so its really on the chemical composition of how the alcohol is derived.
*
Please la inhaling of 70% alcohol is also bad. Alcohol at 10% is also volatile. Vapourisation is due to it being volatile.

You don't need to go clubs for high percentage alcohol, just go make your own illegal rice wine. Ya they probably could go above 60%.

We are talking about cleaning compound here and you said 70% was the best which is totally wrong.
a1098113
post Mar 1 2008, 08:04 PM

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yes and i am clarifying the use of alcoholic swabs in the pharmacy that does a very good job besides thinners and turpentines. I am saying its the most practical solution. And it probably has the highest percentage of alcohol that can be used by us. Besides having to go to a lab.


Added on March 1, 2008, 8:05 pmif you really think ur right, hats off for you. I really have nothing to say.


Added on March 1, 2008, 8:07 pmoh yeah and if it does give u a thrill to shoot me down brows.gif u have it laugh.gif

This post has been edited by a1098113: Mar 1 2008, 08:07 PM
AMDAthlon
post Mar 1 2008, 08:47 PM

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Why have to care about thinner?Why it is not normal as Alcohol?Since thinner also contains alcohol
strife_personified
post Mar 1 2008, 09:16 PM

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it could be due to the fact that thinner is corrosive, it dissolves even paint, so you can guess what it might do to your cpu. i know that nail polish remover is actually a little corrosive towards plastics, but with metals i havent seen any problems. i usually clean my laptops' heatsink and proc heatspread with nail polish remover and up to date havent had any problems. i only noticed that it eats plastics a little, depending on the brand.

PS just did some checking, apparently it eats silicone as well, so letting the nail polish remover touch any non-metal part of the cpu is definitely a problem. but i would think that if your cpu has a thermalspread, like an intel for example, it shouldnt be a problem. if you're using an amd, then if you have nothing else, just make sure not to touch ANYTHING but the die. same would go for thinner i guess. in which case, you're probably better off with a pure alcohol cleaner.

This post has been edited by strife_personified: Mar 1 2008, 09:18 PM
a1098113
post Mar 1 2008, 10:10 PM

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finally someone with some chemistry smile.gif thank you dude. Anyways, for anyone using thinner or turpentine can do so, yes its alcohol, anything that ferments is alcohol, anything that has ethanol and family of hydrocarbons can have alcohol made from it, but thats not what we do we?

We want the purest form of alcohol we can get, and mostly is surgical alcohol which is isopropyl alcohol. Any higher the concentration, we will only find it in the labs and we ppl here wont have access to it. Simple.
hypermax
post Mar 1 2008, 10:45 PM

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If i am not mistaken, the reason behind not using nail polish remover for cleaning CPU is because it contains fragrant oil, which is likely to trap heat. Correct me if i am wrong.
bryanyeo87
post Mar 1 2008, 11:01 PM

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QUOTE(AMDAthlon @ Feb 29 2008, 07:46 PM)
CD cleaner can clean thermal paste?
*
QUOTE(AMDAthlon @ Mar 1 2008, 05:28 PM)
Btw,does thinner will do the job well if i cleaning thermal pads?
*
can, its stated 95% pure isopropyl alcohol on the bottle, depending on brand and free of additives, again depending on brand la smile.gif





QUOTE(tomatos @ Mar 1 2008, 06:43 PM)
Thats where you are very wrong there. Alcohol has high volatility makes alcohol tend to vapourise. Alcohol at high percentage is used as antiseptic and almost pure alcohol(>99%) is used as a cleaning agent. All alcohol burns and ingestion of above 50% alcohol would be enough to kill.
*
try putting anything more then 75% pure isopropyl alcohol on a wound and permanent burn/scarring is incurred smile.gif that is why max used is 70% and not 99%

All alcohol does not burn on its own. But all alcohol above 30% does evaporate when exposed to ambient (more then 0c) temperatures





QUOTE(tomatos @ Mar 1 2008, 06:58 PM)
Please la inhaling of 70% alcohol is also bad. Alcohol at 10% is also volatile. Vapourisation is due to it being volatile.

You don't need to go clubs for high percentage alcohol, just go make your own illegal rice wine. Ya they probably could go above 60%.

We are talking about cleaning compound here and you said 70% was the best which is totally wrong.
*
Well noone specifically asked you to inhale 70% alcohol from the bottle or from plastic bag right? Normal usage is fine(cleaning etc etc), hell even smelling it is fine, but dont do it excessively la,i wont be responsible for your PHD tongue.gif

its not because it is due to vaporisation that it is volatile. It is very molecularly light and due to that it cannot store alot of energy and hence its melting point is -88.8C (184.35 K) and its boiling point is 82.3 °C (355 K) and that is why, when its exposed to ambient temperatures it will vaporize as well as carry a fair bit of energy off the surface it was on, and when its on your hand, its even more faster (hence the cold feeling). What more if it is lit up from a heat? This is referring to Isopropyl alcohol la, where as other types of alcohol are more or less about the same melt and boil point. Isopropyl alcohol cannot be drunk because it has a toxicity almost double of those from beer/wine (lazy to explain), and that is why you can die if you drink it.


Illegal rice wine is composed of ethanol, which is of a different substance then "cleaning compound", and different charateristic and and that is the one from beer, wine etc etc, those drinkable ones made from fermentation smile.gif

For cleaning compound, 98% is the best, but can you procure it without going through a lab? Best easy to get and use is 95% priced at rm 5 per bottle brows.gif

Those artic cleaners are about 80% pure.






QUOTE(strife_personified @ Mar 1 2008, 09:16 PM)
it could be due to the fact that thinner is corrosive, it dissolves even paint, so you can guess what it might do to your cpu. i know that nail polish remover is actually a little corrosive towards plastics, but with metals i havent seen any problems. i usually clean my laptops' heatsink and proc heatspread with nail polish remover and up to date havent had any problems. i only noticed that it eats plastics a little, depending on the brand.

PS just did some checking, apparently it eats silicone as well, so letting the nail polish remover touch any non-metal part of the cpu is definitely a problem. but i would think that if your cpu has a thermalspread, like an intel for example, it shouldnt be a problem. if you're using an amd, then if you have nothing else, just make sure not to touch ANYTHING but the die. same would go for thinner i guess. in which case, you're probably better off with a pure alcohol cleaner.
*
its due to acetone in the nail polish remover that plastic is dissolved as its a solvent, same stuff metabolized by your body when overdosing on beer/wine and same stuff as some paint thinners in the market.


Added on March 1, 2008, 11:03 pm
QUOTE(AMDAthlon @ Mar 1 2008, 08:47 PM)
Why have to care about thinner?Why it is not normal as Alcohol?Since thinner also contains alcohol
*
because most thinners you purchase from hardware stores are made from petroleum, and having a layer of oil/petroleum on your cpu/hsf is not good right? smile.gif




QUOTE(hypermax @ Mar 1 2008, 10:45 PM)
If i am not mistaken, the reason behind not using nail polish remover for cleaning CPU is because it contains fragrant oil, which is likely to trap heat. Correct me if i am wrong.
*
that as well smile.gif

This post has been edited by bryanyeo87: Mar 1 2008, 11:07 PM
tomatos
post Mar 2 2008, 12:42 AM

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QUOTE(bryanyeo87 @ Mar 1 2008, 11:01 PM)
All alcohol does not burn on its own. But all alcohol above 30% does evaporate when exposed to ambient (more then 0c) temperatures
Well noone specifically asked you to inhale 70% alcohol from the bottle or from plastic bag right? Normal usage is fine(cleaning etc etc), hell even smelling it is fine, but dont do it excessively la,i wont be responsible for your PHD tongue.gif

its not because it is due to vaporisation that it is volatile. It is very molecularly light and due to that it cannot store alot of energy and hence its melting point is -88.8C (184.35 K) and its boiling point is 82.3 °C (355 K) and that is why, when its exposed to ambient temperatures it will vaporize as well as carry a fair bit of energy off the surface it was on, and when its on your hand, its even more faster (hence the cold feeling). What more if it is lit up from a heat? This is referring to Isopropyl alcohol la, where as other types of alcohol are more or less about the same melt and boil point. Isopropyl alcohol cannot be drunk because it has a toxicity almost double of those from beer/wine (lazy to explain), and that is why you can die if you drink it.
Illegal rice wine is composed of ethanol, which is of a different substance then "cleaning compound", and different charateristic and and that is the one from beer, wine etc etc, those drinkable ones made from fermentation smile.gif
*
What i mean burn is all alcohol are flammable.

Alcohol with low percentage do evaporate. Not neccessary above 30%.

Volatility in chemistry means the tendency to evaporate.

It's boiling point has nothing to do with it's evaporation. It's due to it's low vapor pressure.

You can drink isopropyl alcohol but anything above 20ml is toxic.

You feel cold when alcohol evaporates on your hand is because evaporation is endothermic thus it absorbs heat energy during it's process to break the bonds.

Again back to the discussion is that a forummer on the previous page claims that 70% alcohol is the best cleaning solvent. So what say you?

bryanyeo87
post Mar 2 2008, 01:11 AM

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well, 70% is easily bought in the form of alcohol swabs which is for easy to use ( tear package and use) i have used both before, they are practically the same just that 70% leaves a slight water residue which is of not much concern because its wiped off with cotton wool or cotton buds biggrin.gif
a1098113
post Mar 2 2008, 09:00 AM

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QUOTE(tomatos @ Mar 2 2008, 12:42 AM)
What i mean burn is all alcohol are flammable.

Alcohol with low percentage do evaporate. Not neccessary above 30%.

Volatility in chemistry means the tendency to evaporate.

It's boiling point has nothing to do with it's evaporation. It's due to it's low vapor pressure.

You can drink isopropyl alcohol but anything above 20ml is toxic.

You feel cold when alcohol evaporates on your hand is because evaporation is endothermic thus it absorbs heat energy during it's process to break the bonds.

Again back to the discussion is that a forummer on the previous page claims that 70% alcohol is the best cleaning solvent. So what say you?
*
~Edited for common good~

In case its brought up again. I will have to be the one who says sorry brows.gif coz theres a chemistry guy here who knows quite a bit of his organic chemistry thumbup.gif

This post has been edited by a1098113: Mar 2 2008, 12:30 PM
IcEMoCHa
post Mar 2 2008, 10:05 AM

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QUOTE(hypermax @ Mar 1 2008, 10:45 PM)
If i am not mistaken, the reason behind not using nail polish remover for cleaning CPU is because it contains fragrant oil, which is likely to trap heat. Correct me if i am wrong.
*
nail polish remover is easier for removing the hard TIM on the CPU than alcohol.. You can use alcohol to wipe it clean after that... wink.gif
AMDAthlon
post Mar 2 2008, 11:21 AM

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Btw steps on cleaning thermal pads are same or different than cleaning thermal paste?
a1098113
post Mar 2 2008, 12:28 PM

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QUOTE(IcEMoCHa @ Mar 2 2008, 10:05 AM)
nail polish remover is easier for removing the hard TIM on the CPU than alcohol.. You can use alcohol to wipe it clean after that...  wink.gif
*
nail polish remover is commonly known as acetone, and they belong to the ketone family. They are really good organic solvents. But u have to be careful whilst using them as they can dissolve plastics. Also wear googles or specs to prevent the vapor from getting to your eyes..
razr_sped
post Mar 2 2008, 03:05 PM

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yup...acetone is a grat solvent...dissolved most things if not all
for all its hazards and danger issue..u all can alwis check the MSDS for each solvent..
it eats PStyrene like no1 issue..
done that in the lab..
but ethanol or methanol is also the same..jus the rate onli

lucky i have access to analytical grade alcohol..

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