Method for Glass Fiber Separation from Depolymerization of Waste Circuit Boards Using Organic Solvent

摘要

The present invention is a technique of solubilizing an epoxy resin, which is a main component of a closed printed circuit board, with an organic solvent using an organic solvent to separate the materials into metals, glass fibers, resin solutions, and the like. A feature of the present invention is the depolymerization of epoxy resin using an organic solvent at atmospheric pressure. It aims to recycle the remaining glass fibers after depolymerization of metal and nonmetal materials through depolymerization of epoxy resin with 30-40% by weight of closed circuit board. Metals are recycled using current metal smelting methods, and glass fibers can be separated and recycled.