| 摘要 |
<p>Lightweight composites which may possess thermally insulating, fireproofing and/or sound proofing properties, comprise cenospheres and a cementing agent, for instance a sodium silicate solution, magnesium oxychloride, calcium sulphate, or Portland cement. Examples of their uses include as protective coatings or artificial pumice, for sanding and polishing metallic substrates and for incorporation with chemical fertilizers. Other composites comprise cenospheres and a thermoplastic polymer, for instance polystyrene, polymethyl methacrylate, polyvinyl alcohol, polyvinyl acetate or polyethylene, and may possess insulating and/ or decorative properties. In addition, table tennis bats may be made from the composite. The composites may also include exfoliated vermiculite or fly ash.</p> |
