viscoelastic adhesive

[Monteverdi]

I am searching for some viscoelastic glue (or sheet) for constraint layer construction. I found Green Glue in my web searches and also used it. It uses water as a solvent (no VOC) but it therefore works only with material which can absorb water like wood, MDF or gypsum board. It also has a quite low adhesive strength. I would like to use it on aluminum or composites. I assume that the new Magico Q series uses some constraint layering otherwise these speakers would ring in spite of their fancy bracing.
I could find some polyurethane glues which are elastic but not viscoelastic.

[ScottG]

WallDamp

[RockLeeEV]

Originally Posted by Monteverdi

I am searching for some viscoelastic glue (or sheet) for constraint layer construction. I found Green Glue in my web searches and also used it. It uses water as a solvent (no VOC) but it therefore works only with material which can absorb water like wood, MDF or gypsum board. It also has a quite low adhesive strength. I would like to use it on aluminum or composites. I assume that the new Magico Q series uses some constraint layering otherwise these speakers would ring in spite of their fancy bracing.
I could find some polyurethane glues which are elastic but not viscoelastic.

I'm not an expert on these matters but look into Blachford Antivibe. It appears to be right in line with your goals.

[ScottG]

http://www.vibratec.se/data_sheets/N...20Yellow-1.pdf

[Monteverdi]

Originally Posted by ScottG

http://www.vibratec.se/data_sheets/N...20Yellow-1.pdf

It seems to be similar to Green glue as being water based and requiring materials which can absorb water. WallDamp might work but assembly with a glue which allows lateral movement before curing would be easier.