Impact Resistant Glue

thumbsucker · #1 23rd Mar 2011, 11:21 PM

I want to laminate together an item for sports equipment. Using 9 laminations at 3 mm thick, totaling 27 mm thick. The item needs to be laminated as the impact forces will split the wood along the grain. Trust me I tried it.

I need a glue that will flex and give with the impacts, without the glue cracking. I am thinking polyurethane as its seems more flexible. But epoxy would also be an option.

Any suggestions.

AlexS · #2 24th Mar 2011, 01:57 PM

Haven't used poly in that situation, but it doesn't seem so brittle. Epoxy is very brittle, so probably not the best. PVA could be OK,as it seems to have a bit of give.

elanjacobs · #3 24th Mar 2011, 09:26 PM

Definitely not epoxy. A good PVA will probably work, but if you really want bombproof then polyurethane is the best way IMHO

ian · #4 25th Mar 2011, 12:41 AM

There's this stuff http://www.kenteurope.com/uk/datasheets/85051.pdf
It's described as "high impact resistant" I haven't used it

and then there's this stuff Waterproof PVA Multi-Purpose Adhesive (1 Kg) - Kingfisher Adhesives
described as "extremely high impact resistant bond strength" again i haven't used it

looking at the general descriptions, any of the cross linking PVA might be useful

GlueGuy · #5 14th Jun 2011, 02:42 PM

It depends which brand you use. Gorilla Glue have an Epoxy which contain tiny rubber particles. This means that as well as holding a really strong bond, it is less brittle. You get the best of both worlds.