| 摘要 |
New molded products and methods of manufacturing the same are described. More particularly, the molded products comprise thermoset resins and intimately dispersed inorganic solid particles, and the method comprises in its broadest sense, preheating a thermosetting organic resin and a catalyst for the resin to a temperature sufficient to reduce the viscosity of the resin and catalyst to that of a very fluid liquid, and also preheating discrete inorganic solid particulates prior to mixing of the particulates with the fluid resin-catalyst mixture. Such regulated preheating of the resin, catalyst and particulates results in improved wetting of the particulates with the resin-catalyst mixture and in the release of air bubbles during the mixing operation thereby resulting in molded products having improved properties, particularly products wherein the resin is in relatively unstressed and unflawed condition. Various molded products, including filters, molds, and abrasive articles such as grinding wheels are described.
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