Manufacture and properties of protective sound-absorbing mesh-reinforced composite foam board: Effects of filler content and mesh opening.

In this article, the mesh fabric and porous filler are combined with polyurethane (PU) foam to fabricate sound-absorbing composite boards with puncture resistance and cushion protections, after which sound absorption and static puncture resistance are improved. Effects of fillers (vermiculites and perlites) content and mesh opening ratio on sound absorbing, puncture resisting and cushioning properties are explored respectively. Result shows that, mesh fabric improves the low-frequency coefficients, and also increases the puncture resistance by 2 times and 1.5 times for 2-mm-diameter and 4.5-mm-diameter probes penetrations. Absorption peak shifts to the lower frequency with increase of fillers content and mesh opening, but static puncture resistance against 4.5-mm-diameter probe decreases with mesh opening ratio. The fabricated composite foam boards can absorb 90 % of impact energy when compounding with 10 wt% vermiculite fillers and 45 % opening fabric, which shows the favorable cushioning protection. This mesh-reinforced composite foam boards can be applied as protective compartment walls whatever in gerocomium, women and children care center, kindergarten or karaoke TV room. [ABSTRACT FROM AUTHOR]