FIBER SIZE, SIZED REINFORCEMENTS, AND ARTICLES REINFORCED WITH SUCH REINFORCEMENTS

摘要

The present invention relates to fiber-size compositions for coating glass or other reinforcing fiber materials that are used in the manufacturing of composites. The fiber-size composition contains at least about 4 % by weight of a polyvinylpyrrolidone film former, at least one lubricant and a coupling agent. The sizing composition gives the fibers desirable properties such' as high strength, improved flexibility, fuzz formation resistance, and fiber smoothness and softness.