Does coremat work with most epoxy resins? Going through their site it says something about dissolving in resin and softening. It sounds like this means styrene based resins.
We have tried infusing it with epoxy and it didn’t look like it wet out fully, like when using PE. But best way to find out is to do a test sample.
Infusing with Coremat defeats the process and materials. Core mat is simply a non-structural bulker. It absorbs resin and compresses easily. Neither of which is good for anything under vacuum.
We were given a roll of the stuff, so we thought we would see if it could be used when making tools. The supplier couldn’t tell us if it would work, so we gave it a shot on a test panel and now we know it’s no good.
It is however quite good for making temporary heat huts.
You need to be a bit more specific, ‘Coremat’ covers a heck of a lot different materials. Read the manufacturers spec sheet or ring them up.
We use coremat with Epoxies and vac’ infusion, it works great, but then we do use the correct material for the job.
No, actually Coremat is Coremat. It is a specific material.
I think most people are considering bulker cores such as lantor soric a “core-mat”. though similiar looking they are used in totally different ways. using “core-mat” in any closed molded application does not work well.
Yes, but you wouldn’t use a coremat intended for wet lay up for infusing.
There is a need to be specific.
Yes I agree, straight from their site:
“Thin core (bulker), adding stiffness, while reducing weight.”
And:
"Core material and infusion medium in one
Soric is a polyester nonwoven material with a compression resistant hexagonal (XF, SF, LRC) or random dot-printed (TF) cell structure. These pressure-resistant cells, which are separated by channels, contain synthetic micro-spheres.
The cells do not absorb resin and therefore limit the total resin up-take. Since these cells are pressure resistant, they create thickness in the laminate even when pressure is applied by vacuum bag. The channels facilitate resin flow and form a pattern of cured resin with good mechanical properties and excellent bonding to the outer skins."
It’s good stuff and I like using it, we make some really strong light panels with it and if you are smart you can cut it so it applies pressure in those difficult areas which often have bridging problems.
i use coremat with vacuum bagging (and epoxies) and it doesn’t compress a lot, and it makes a world of a difference for stiffness.