| 摘要 |
<p>Composite materials and methods for their preparation are described herein. The composite materials include a polyurethane made from the reaction of an isocyanate and a polyol, and coal ash (e.g., fly ash). The isocyanates for these composite materials may be selected from the group consisting of diisocyanates, polyisocyanates, and mixtures thereof. The polyol consists essentially of one or more plant-based polyols, the one or more plant-based polyols including castor oil. The fly ash is present in amounts from about 40% to about 90% by weight of the composite material. Also described is a method of preparing a composite material, including mixing an isocyanate, a polyol, coal ash (e.g., fly ash), and a catalyst.</p> |
