Identifying Suitable Glue for Noname Plastic Glasses Frame Repair with Cyanoacrylate Failure

Question

Hello,
I try to glue the glasses together with a drop (cyanoacrylate glue) and it doesn't work at all. I have not encountered anything like this before, but I read that these adhesives do not stick, for example, to polypropylene. The glasses are a noname for PLN 30 but they work well so I would like to fix them. I don't know what kind of plastic it is. What glue to do this? The frame on the glass is broken.

DominTR3B · Answer

I glued it with a cheap two-component epoxy (resin / hardener), it can be formed nicely. After drying, it stays for 2 years. I don't remember the name but one tube was yellow, the other gray.

c4r0 · Answer

I have a resin (Devcon 5 minute epoxy) but the problem is that it doesn't stick right away and it doesn't have too much of a squeeze for 10 minutes. I have tried this resin with other glasses before. Maybe you have a different one?

Błażej · Answer

The holder is wide enough that you will be able to melt a stapler / staple / wire clip? Cracked anyway, so you won't lose much.

c4r0 · Answer

It will be hard with something like that. I would prefer to glue. Maybe even with some kind of poxipol, so that I will stick the glass in the holder and everything will stick to it.

_jta_ · Answer

Try to recognize the material. I read that cyanoacrylate adhesives also glue polypropylene, but it requires proper preparation (bath in molten soda), which is not feasible at home. You can try elsewhere to check if the adhesive sticks to this material. And of course, make sure the surface is cleaned (before gluing and before this test - if it sticks to the dirt, it will come off together with the dirt), but also provide a little dirt to initiate the polymerization of the glue (the sweat from your fingers is perfect, you drip the glue onto perfectly clean surfaces). place, you can wait an hour and it will remain liquid, but if you touch it with your finger it will stick immediately).

Algernon · Answer

Recently, a metal hinge broke off my plastic frame. It turned out that I glued it both firmly and aesthetically Technicqll colorless epoxy adhesive . The weld is a bit flexible like the frame material and looks very aesthetically. However, between the fairy tales, you can put their bullish marketing 1 min. The glue binds a good few minutes (or longer), so if someone has a broken frame in the middle, I suggest making a technological bridge (connector) made of wood or plastic and when gluing properly, stick it in 2 places next to the Super Glue, yes, just to hold the frame together (it doesn't have to be very strong). After the frame has stuck together (approx. 2 days), the bridge that is no longer needed is of course removed and carefully cleaned of any residue.

Identifying Suitable Glue for Noname Plastic Glasses Frame Repair with Cyanoacrylate Failure

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