Cross-Linked Core Mold

摘要

A mandrel or core mold is used in the manufacture of composite products. The current invention avoids the disadvantages of plaster mandrels by making mandrels or core molds composed of aggregate with a dual binder system. This system produces a mold with high green strength, high dry strength, and the ability to be disintegrated from a finished composite product. The cross-linked polyvinylpyrrolidone, poly-polyvinylpyrrolidone, of this invention provides many benefits and advantages.

主权项

1. The method of forming a composite product comprising the steps:
a. Forming a mandrel or core mold of desired shape with aggregate, a binder that maintains the desired shape while green, and containing an effective amount of polyvinylpyrrolidone, b. Cross-linking the polyvinylpyrrolidone contained within the mandrel or core mold forming poly-polyvinylpyrrolidone, c. Wrapping or coating the mandrel or core mold with raw composite and curing the composite under appropriate conditions, and d. Using water to disintegrate the mandrel or core mold and remove it from the cured composite product.