This one goes by the brand name 'Kermel.' It's better at creating a barrier against chemicals soaking through, but it can't hold up against hot acid or strong alkali very well. This one is flame retardant viscose, and it isn't a chemical barrier...

[She switches over to another page. This picture is of a fluffy fiber that looks more like cotton.] But it's more resistant to acid.

So if you sandwiched that as a filler layer between layers of Kermel, then --

[She glances up, and adds, a little dryly:] I'm not an engineer and I don't think I'm a chemist either, so you should probably test this before you do anything dangerous with it.