| 摘要 |
<p>A composition for a slurry for manufacture of a building panel includes o ne or more fillers, one or more binders and water. One or more fillers is a n expanded perlite at least partially covered with a film-forming, thermopl astic polymer coating Some embodiments use calcined or uncalcined gypsum as a binder or filler. One embodiment is a building panel that includes a sol id matrix of calcium sulfate dihydrate crystals bound to expanded perlite. A method of making the panel includes acquiring expanded perlite and coatin g it with film-forming, thermoplastic polymer coating. After the expanded p erlite is prepared, it is combined with water other optional fillers and on e or more binders to form a slurry. The slurry is shaped into a panel and a llowed to dry.</p> |
