| 摘要 |
PURPOSE: Provided is a composition of a magnetic dedusting sheet, which can produce the magnetic sheet excellent in dedusting property and NVH effect and easy to be attached and detached. CONSTITUTION: The composition of the magnetic dedusting sheet contains 20-40wt% of blown asphalt, 0.5-4wt% of polybutadiene, 1-5wt% of a resin selected from the group consisting of a petroleum resin, a cumaron resin, and a rosin, 50-70wt% of magnetic bodies selected from Br- or Sr-based ferrite, and 1-6wt% of cellulose fiber. And the magnetic sheet(4) produced from the composition has a magnetic force of 200-270 gauss. |
