Cyanoacralate, CA Glue, Super glue, Loctite.
Any of these can hold most kinds of material together if there is enough surface area.
What do you do if you have a tiny plastic part that you just snapped in half?
A cheap smart watch had a clasp part made of nylon or abs plastic that snapped. How did I fix it?
TL;DR : dental floss + super glue + a sprinkle of baking soda
Composites are a mixture of materials and when you put them together you get the benifits of both materials, often making a stronger superior super material. Carbon fiber, fiber glass, concrete, etc.
In this case, floss is a strong thin flexible wire, and if glue next to the tiny surface area, spanning the join, it can add it's strength. Embedding it in super glue helps the setup.
Baking Soda makes CA Glue harden almost instantly and makes it more like putty for a few seconds before hardening. It also gives some thickness to the super glue.
After adding some glue to the dental floss crossing the joint, put a pinch of baking soda over the joint; pat it down with a spoon or some other tool in the next few seconds to shape the end result.