The influence of rosin, blowing agent, and mould type on the sound insulation of paper-based foams

Wooden foams have been extensively researched in recent years because of their special structure and green features. At the same time, noise pollution is increasing, prompting sound insulation to become another research focus. In this study, a three-factor, five-level orthogonal experiment was designed, 25 sets specimens were produced for testing analysis 19 frequency bands. To measure insulation, two criteria used: material loss rate (for determining mass) volume sound). After measuring, these values compared. It found that highly isolated from high noise. The amount adhesive used choice mould had considerable effect on as foaming varied. Good can be achieved when very low high.