PLA and IPA

[Ammar]

Hello everybody,

I've been 3D printing small baskets to put the parts in while cleaning in the jars in my ultrasonic cleaner but I just had a thought that PLA could react with the IPA (or naphtha) and leave some residue.

Is this possible? does IPA dissolve PLA? 

[tomh207]

No real experience (yet) but PLA is chemically resistant according to most manufacturers. I have seen that it can be affected by acetone but that is not really relevant for watch cleaning.

 

Tom

[bramu]

Hi Ammar,

I couldn't find anything about the chemical resistance of PLA to naphtha. According to these sources it doesn't rate too well.

I think that your concern is correct. If you did a final rinse in IPA after the parts are out of the basket my guess is it would be fine.

I have no affiliation in either of these companies.

https://prusament.com/chemical-resistance-of-3d-printing-materials/

https://www.filamentive.com/chemical-resistance-of-3d-printing-filament/

[Ammar]

21 hours ago, tomh207 said:

No real experience (yet) but PLA is chemically resistant according to most manufacturers. I have seen that it can be affected by acetone but that is not really relevant for watch cleaning.

 

Tom

Yes acetone destroys pla but as you said it's not relevant, I've been finding conflicted information about IPA and PLA some say it has no effect what so ever some say that it dessolves it slwoly which is not good for watch cleaning.

 

5 hours ago, bramu said:

Hi Ammar,

I couldn't find anything about the chemical resistance of PLA to naphtha. According to these sources it doesn't rate too well.

I think that your concern is correct. If you did a final rinse in IPA after the parts are out of the basket my guess is it would be fine.

I have no affiliation in either of these companies.

https://prusament.com/chemical-resistance-of-3d-printing-materials/

https://www.filamentive.com/chemical-resistance-of-3d-printing-filament/

Thank you, I'll have a read. 

 

[Malocchio]

According to this experiment IPA is safe

 

[Ammar]

19 hours ago, Malocchio said:

According to this experiment IPA is safe

 

Hey this is awesome, thank you very much.