| 摘要 |
<p>A microcellular polyurethane composite material comprising desiccated rubber particles embedded in a microcellular matrix of polyurethane. Rubber particles derived from tires and other sources are combined with a desiccant to remove moisture present in the particles. The resulting desiccated rubber particles and desiccant are mixedd with a polyol, polyisocyanate, catalyst, and blowing agent to form a precursor blend which is cured to produce a microcellular polyurethane composite. The resulting microcellular rubber-polyurethane composite may be used for tires, shoe and boot soles, surface coatings, and other applications requiring a material which is structurally strong and wear resistant. The desiccated rubber particles may be premixed with the polyol and/or added simultaneously with the polyol, polyisocyanate, catalyst, and blowing agent during composite molding.</p> |
