Filaments good adhesion Epoxy  

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dan
 dan
(@dan-30)
Active Member

Hi,

 

I want to do some tests (following standards) to check the adhesion between 3d printed FDM parts and epoxy (glass fabric).

I have a Prusa and I would like to select 4/5 filaments to test. Based on your experience (or references) which filaments should I for sure test?

I would like to test from low temperature resistant filaments (e.g. PLA) to high temperature ones (e.g. PC).

Any suggestion is appreciated.

 

Thanks

Posted : 24/02/2021 11:49 am
Gonper liked
Gonper
(@gonper)
Eminent Member

I just made some weeks ago some tests on different adhesives with PLA+
Let's say that epoxy bonds it, but it is not the strongest bonding system by far.
I am now working to improve the chemical welding system I describe in the video as well. In order to find the right filler concentration to solvent, and the right bonding method/s, so the chemical welding system it is easy to do and creates the strongest bonding.

 

Posted : 24/02/2021 12:59 pm
cwbullet
(@cwbullet)
Illustrious Member

@gonper

Epoxy is a varied list of adhesives.  I often use plastic specific expoxies that fuse the two parts.  

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Chuck H
3D Printer Review Blog...
Posted : 24/02/2021 6:10 pm
Gonper
(@gonper)
Eminent Member

Yes provably you are right @Chuck H, some plastic PLA specific designed epoxy will be good but I have not been able to find it. Only for ABS, PVC, PC, Acrylics but not for PLA...
So for my projects, that usually require very high strong bondings I can only use CA or the Dichloromethane/PLA welding systems that I developed.
Provably the welding product can be developed further using as well Methyl Acetate solvent in mix with Dichloromethane. But I have not tested that mix yet.
And this system has its advantages, that is much easier to use and cheaper than epoxy.

Posted : 24/02/2021 7:49 pm
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